{"version":3,"file":"bundle.js","sources":["../../node_modules/svelte/internal/index.mjs","../../node_modules/@firebase/util/dist/index.esm2017.js","../../node_modules/@firebase/component/dist/esm/index.esm2017.js","../../node_modules/@firebase/logger/dist/esm/index.esm2017.js","../../node_modules/@firebase/app/dist/esm/index.esm2017.js","../../node_modules/@firebase/database/dist/index.esm2017.js","../../node_modules/dayjs/dayjs.min.js","../../node_modules/dayjs/plugin/duration.js","../../node_modules/firebase/app/dist/index.esm.js","../../src/libs/firebase.ts","../../node_modules/svelte/store/index.mjs","../../src/hooks/useRealtimeDB.ts","../../node_modules/windicss/config/index.mjs","../../src/App.svelte","../../src/main.ts"],"sourcesContent":["function noop() { }\nconst identity = x => x;\nfunction assign(tar, src) {\n    // @ts-ignore\n    for (const k in src)\n        tar[k] = src[k];\n    return tar;\n}\nfunction is_promise(value) {\n    return value && typeof value === 'object' && typeof value.then === 'function';\n}\nfunction add_location(element, file, line, column, char) {\n    element.__svelte_meta = {\n        loc: { file, line, column, char }\n    };\n}\nfunction run(fn) {\n    return fn();\n}\nfunction blank_object() {\n    return Object.create(null);\n}\nfunction run_all(fns) {\n    fns.forEach(run);\n}\nfunction is_function(thing) {\n    return typeof thing === 'function';\n}\nfunction safe_not_equal(a, b) {\n    return a != a ? b == b : a !== b || ((a && typeof a === 'object') || typeof a === 'function');\n}\nlet src_url_equal_anchor;\nfunction src_url_equal(element_src, url) {\n    if (!src_url_equal_anchor) {\n        src_url_equal_anchor = document.createElement('a');\n    }\n    src_url_equal_anchor.href = url;\n    return element_src === src_url_equal_anchor.href;\n}\nfunction not_equal(a, b) {\n    return a != a ? b == b : a !== b;\n}\nfunction is_empty(obj) {\n    return Object.keys(obj).length === 0;\n}\nfunction validate_store(store, name) {\n    if (store != null && typeof store.subscribe !== 'function') {\n        throw new Error(`'${name}' is not a store with a 'subscribe' method`);\n    }\n}\nfunction subscribe(store, ...callbacks) {\n    if (store == null) {\n        return noop;\n    }\n    const unsub = store.subscribe(...callbacks);\n    return unsub.unsubscribe ? () => unsub.unsubscribe() : unsub;\n}\nfunction get_store_value(store) {\n    let value;\n    subscribe(store, _ => value = _)();\n    return value;\n}\nfunction component_subscribe(component, store, callback) {\n    component.$$.on_destroy.push(subscribe(store, callback));\n}\nfunction create_slot(definition, ctx, $$scope, fn) {\n    if (definition) {\n        const slot_ctx = get_slot_context(definition, ctx, $$scope, fn);\n        return definition[0](slot_ctx);\n    }\n}\nfunction get_slot_context(definition, ctx, $$scope, fn) {\n    return definition[1] && fn\n        ? assign($$scope.ctx.slice(), definition[1](fn(ctx)))\n        : $$scope.ctx;\n}\nfunction get_slot_changes(definition, $$scope, dirty, fn) {\n    if (definition[2] && fn) {\n        const lets = definition[2](fn(dirty));\n        if ($$scope.dirty === undefined) {\n            return lets;\n        }\n        if (typeof lets === 'object') {\n            const merged = [];\n            const len = Math.max($$scope.dirty.length, lets.length);\n            for (let i = 0; i < len; i += 1) {\n                merged[i] = $$scope.dirty[i] | lets[i];\n            }\n            return merged;\n        }\n        return $$scope.dirty | lets;\n    }\n    return $$scope.dirty;\n}\nfunction update_slot_base(slot, slot_definition, ctx, $$scope, slot_changes, get_slot_context_fn) {\n    if (slot_changes) {\n        const slot_context = get_slot_context(slot_definition, ctx, $$scope, get_slot_context_fn);\n        slot.p(slot_context, slot_changes);\n    }\n}\nfunction update_slot(slot, slot_definition, ctx, $$scope, dirty, get_slot_changes_fn, get_slot_context_fn) {\n    const slot_changes = get_slot_changes(slot_definition, $$scope, dirty, get_slot_changes_fn);\n    update_slot_base(slot, slot_definition, ctx, $$scope, slot_changes, get_slot_context_fn);\n}\nfunction get_all_dirty_from_scope($$scope) {\n    if ($$scope.ctx.length > 32) {\n        const dirty = [];\n        const length = $$scope.ctx.length / 32;\n        for (let i = 0; i < length; i++) {\n            dirty[i] = -1;\n        }\n        return dirty;\n    }\n    return -1;\n}\nfunction exclude_internal_props(props) {\n    const result = {};\n    for (const k in props)\n        if (k[0] !== '$')\n            result[k] = props[k];\n    return result;\n}\nfunction compute_rest_props(props, keys) {\n    const rest = {};\n    keys = new Set(keys);\n    for (const k in props)\n        if (!keys.has(k) && k[0] !== '$')\n            rest[k] = props[k];\n    return rest;\n}\nfunction compute_slots(slots) {\n    const result = {};\n    for (const key in slots) {\n        result[key] = true;\n    }\n    return result;\n}\nfunction once(fn) {\n    let ran = false;\n    return function (...args) {\n        if (ran)\n            return;\n        ran = true;\n        fn.call(this, ...args);\n    };\n}\nfunction null_to_empty(value) {\n    return value == null ? '' : value;\n}\nfunction set_store_value(store, ret, value) {\n    store.set(value);\n    return ret;\n}\nconst has_prop = (obj, prop) => Object.prototype.hasOwnProperty.call(obj, prop);\nfunction action_destroyer(action_result) {\n    return action_result && is_function(action_result.destroy) ? action_result.destroy : noop;\n}\n\nconst is_client = typeof window !== 'undefined';\nlet now = is_client\n    ? () => window.performance.now()\n    : () => Date.now();\nlet raf = is_client ? cb => requestAnimationFrame(cb) : noop;\n// used internally for testing\nfunction set_now(fn) {\n    now = fn;\n}\nfunction set_raf(fn) {\n    raf = fn;\n}\n\nconst tasks = new Set();\nfunction run_tasks(now) {\n    tasks.forEach(task => {\n        if (!task.c(now)) {\n            tasks.delete(task);\n            task.f();\n        }\n    });\n    if (tasks.size !== 0)\n        raf(run_tasks);\n}\n/**\n * For testing purposes only!\n */\nfunction clear_loops() {\n    tasks.clear();\n}\n/**\n * Creates a new task that runs on each raf frame\n * until it returns a falsy value or is aborted\n */\nfunction loop(callback) {\n    let task;\n    if (tasks.size === 0)\n        raf(run_tasks);\n    return {\n        promise: new Promise(fulfill => {\n            tasks.add(task = { c: callback, f: fulfill });\n        }),\n        abort() {\n            tasks.delete(task);\n        }\n    };\n}\n\n// Track which nodes are claimed during hydration. Unclaimed nodes can then be removed from the DOM\n// at the end of hydration without touching the remaining nodes.\nlet is_hydrating = false;\nfunction start_hydrating() {\n    is_hydrating = true;\n}\nfunction end_hydrating() {\n    is_hydrating = false;\n}\nfunction upper_bound(low, high, key, value) {\n    // Return first index of value larger than input value in the range [low, high)\n    while (low < high) {\n        const mid = low + ((high - low) >> 1);\n        if (key(mid) <= value) {\n            low = mid + 1;\n        }\n        else {\n            high = mid;\n        }\n    }\n    return low;\n}\nfunction init_hydrate(target) {\n    if (target.hydrate_init)\n        return;\n    target.hydrate_init = true;\n    // We know that all children have claim_order values since the unclaimed have been detached if target is not <head>\n    let children = target.childNodes;\n    // If target is <head>, there may be children without claim_order\n    if (target.nodeName === 'HEAD') {\n        const myChildren = [];\n        for (let i = 0; i < children.length; i++) {\n            const node = children[i];\n            if (node.claim_order !== undefined) {\n                myChildren.push(node);\n            }\n        }\n        children = myChildren;\n    }\n    /*\n    * Reorder claimed children optimally.\n    * We can reorder claimed children optimally by finding the longest subsequence of\n    * nodes that are already claimed in order and only moving the rest. The longest\n    * subsequence subsequence of nodes that are claimed in order can be found by\n    * computing the longest increasing subsequence of .claim_order values.\n    *\n    * This algorithm is optimal in generating the least amount of reorder operations\n    * possible.\n    *\n    * Proof:\n    * We know that, given a set of reordering operations, the nodes that do not move\n    * always form an increasing subsequence, since they do not move among each other\n    * meaning that they must be already ordered among each other. Thus, the maximal\n    * set of nodes that do not move form a longest increasing subsequence.\n    */\n    // Compute longest increasing subsequence\n    // m: subsequence length j => index k of smallest value that ends an increasing subsequence of length j\n    const m = new Int32Array(children.length + 1);\n    // Predecessor indices + 1\n    const p = new Int32Array(children.length);\n    m[0] = -1;\n    let longest = 0;\n    for (let i = 0; i < children.length; i++) {\n        const current = children[i].claim_order;\n        // Find the largest subsequence length such that it ends in a value less than our current value\n        // upper_bound returns first greater value, so we subtract one\n        // with fast path for when we are on the current longest subsequence\n        const seqLen = ((longest > 0 && children[m[longest]].claim_order <= current) ? longest + 1 : upper_bound(1, longest, idx => children[m[idx]].claim_order, current)) - 1;\n        p[i] = m[seqLen] + 1;\n        const newLen = seqLen + 1;\n        // We can guarantee that current is the smallest value. Otherwise, we would have generated a longer sequence.\n        m[newLen] = i;\n        longest = Math.max(newLen, longest);\n    }\n    // The longest increasing subsequence of nodes (initially reversed)\n    const lis = [];\n    // The rest of the nodes, nodes that will be moved\n    const toMove = [];\n    let last = children.length - 1;\n    for (let cur = m[longest] + 1; cur != 0; cur = p[cur - 1]) {\n        lis.push(children[cur - 1]);\n        for (; last >= cur; last--) {\n            toMove.push(children[last]);\n        }\n        last--;\n    }\n    for (; last >= 0; last--) {\n        toMove.push(children[last]);\n    }\n    lis.reverse();\n    // We sort the nodes being moved to guarantee that their insertion order matches the claim order\n    toMove.sort((a, b) => a.claim_order - b.claim_order);\n    // Finally, we move the nodes\n    for (let i = 0, j = 0; i < toMove.length; i++) {\n        while (j < lis.length && toMove[i].claim_order >= lis[j].claim_order) {\n            j++;\n        }\n        const anchor = j < lis.length ? lis[j] : null;\n        target.insertBefore(toMove[i], anchor);\n    }\n}\nfunction append(target, node) {\n    target.appendChild(node);\n}\nfunction append_styles(target, style_sheet_id, styles) {\n    const append_styles_to = get_root_for_style(target);\n    if (!append_styles_to.getElementById(style_sheet_id)) {\n        const style = element('style');\n        style.id = style_sheet_id;\n        style.textContent = styles;\n        append_stylesheet(append_styles_to, style);\n    }\n}\nfunction get_root_for_style(node) {\n    if (!node)\n        return document;\n    const root = node.getRootNode ? node.getRootNode() : node.ownerDocument;\n    if (root && root.host) {\n        return root;\n    }\n    return node.ownerDocument;\n}\nfunction append_empty_stylesheet(node) {\n    const style_element = element('style');\n    append_stylesheet(get_root_for_style(node), style_element);\n    return style_element;\n}\nfunction append_stylesheet(node, style) {\n    append(node.head || node, style);\n}\nfunction append_hydration(target, node) {\n    if (is_hydrating) {\n        init_hydrate(target);\n        if ((target.actual_end_child === undefined) || ((target.actual_end_child !== null) && (target.actual_end_child.parentElement !== target))) {\n            target.actual_end_child = target.firstChild;\n        }\n        // Skip nodes of undefined ordering\n        while ((target.actual_end_child !== null) && (target.actual_end_child.claim_order === undefined)) {\n            target.actual_end_child = target.actual_end_child.nextSibling;\n        }\n        if (node !== target.actual_end_child) {\n            // We only insert if the ordering of this node should be modified or the parent node is not target\n            if (node.claim_order !== undefined || node.parentNode !== target) {\n                target.insertBefore(node, target.actual_end_child);\n            }\n        }\n        else {\n            target.actual_end_child = node.nextSibling;\n        }\n    }\n    else if (node.parentNode !== target || node.nextSibling !== null) {\n        target.appendChild(node);\n    }\n}\nfunction insert(target, node, anchor) {\n    target.insertBefore(node, anchor || null);\n}\nfunction insert_hydration(target, node, anchor) {\n    if (is_hydrating && !anchor) {\n        append_hydration(target, node);\n    }\n    else if (node.parentNode !== target || node.nextSibling != anchor) {\n        target.insertBefore(node, anchor || null);\n    }\n}\nfunction detach(node) {\n    node.parentNode.removeChild(node);\n}\nfunction destroy_each(iterations, detaching) {\n    for (let i = 0; i < iterations.length; i += 1) {\n        if (iterations[i])\n            iterations[i].d(detaching);\n    }\n}\nfunction element(name) {\n    return document.createElement(name);\n}\nfunction element_is(name, is) {\n    return document.createElement(name, { is });\n}\nfunction object_without_properties(obj, exclude) {\n    const target = {};\n    for (const k in obj) {\n        if (has_prop(obj, k)\n            // @ts-ignore\n            && exclude.indexOf(k) === -1) {\n            // @ts-ignore\n            target[k] = obj[k];\n        }\n    }\n    return target;\n}\nfunction svg_element(name) {\n    return document.createElementNS('http://www.w3.org/2000/svg', name);\n}\nfunction text(data) {\n    return document.createTextNode(data);\n}\nfunction space() {\n    return text(' ');\n}\nfunction empty() {\n    return text('');\n}\nfunction listen(node, event, handler, options) {\n    node.addEventListener(event, handler, options);\n    return () => node.removeEventListener(event, handler, options);\n}\nfunction prevent_default(fn) {\n    return function (event) {\n        event.preventDefault();\n        // @ts-ignore\n        return fn.call(this, event);\n    };\n}\nfunction stop_propagation(fn) {\n    return function (event) {\n        event.stopPropagation();\n        // @ts-ignore\n        return fn.call(this, event);\n    };\n}\nfunction self(fn) {\n    return function (event) {\n        // @ts-ignore\n        if (event.target === this)\n            fn.call(this, event);\n    };\n}\nfunction trusted(fn) {\n    return function (event) {\n        // @ts-ignore\n        if (event.isTrusted)\n            fn.call(this, event);\n    };\n}\nfunction attr(node, attribute, value) {\n    if (value == null)\n        node.removeAttribute(attribute);\n    else if (node.getAttribute(attribute) !== value)\n        node.setAttribute(attribute, value);\n}\nfunction set_attributes(node, attributes) {\n    // @ts-ignore\n    const descriptors = Object.getOwnPropertyDescriptors(node.__proto__);\n    for (const key in attributes) {\n        if (attributes[key] == null) {\n            node.removeAttribute(key);\n        }\n        else if (key === 'style') {\n            node.style.cssText = attributes[key];\n        }\n        else if (key === '__value') {\n            node.value = node[key] = attributes[key];\n        }\n        else if (descriptors[key] && descriptors[key].set) {\n            node[key] = attributes[key];\n        }\n        else {\n            attr(node, key, attributes[key]);\n        }\n    }\n}\nfunction set_svg_attributes(node, attributes) {\n    for (const key in attributes) {\n        attr(node, key, attributes[key]);\n    }\n}\nfunction set_custom_element_data(node, prop, value) {\n    if (prop in node) {\n        node[prop] = typeof node[prop] === 'boolean' && value === '' ? true : value;\n    }\n    else {\n        attr(node, prop, value);\n    }\n}\nfunction xlink_attr(node, attribute, value) {\n    node.setAttributeNS('http://www.w3.org/1999/xlink', attribute, value);\n}\nfunction get_binding_group_value(group, __value, checked) {\n    const value = new Set();\n    for (let i = 0; i < group.length; i += 1) {\n        if (group[i].checked)\n            value.add(group[i].__value);\n    }\n    if (!checked) {\n        value.delete(__value);\n    }\n    return Array.from(value);\n}\nfunction to_number(value) {\n    return value === '' ? null : +value;\n}\nfunction time_ranges_to_array(ranges) {\n    const array = [];\n    for (let i = 0; i < ranges.length; i += 1) {\n        array.push({ start: ranges.start(i), end: ranges.end(i) });\n    }\n    return array;\n}\nfunction children(element) {\n    return Array.from(element.childNodes);\n}\nfunction init_claim_info(nodes) {\n    if (nodes.claim_info === undefined) {\n        nodes.claim_info = { last_index: 0, total_claimed: 0 };\n    }\n}\nfunction claim_node(nodes, predicate, processNode, createNode, dontUpdateLastIndex = false) {\n    // Try to find nodes in an order such that we lengthen the longest increasing subsequence\n    init_claim_info(nodes);\n    const resultNode = (() => {\n        // We first try to find an element after the previous one\n        for (let i = nodes.claim_info.last_index; i < nodes.length; i++) {\n            const node = nodes[i];\n            if (predicate(node)) {\n                const replacement = processNode(node);\n                if (replacement === undefined) {\n                    nodes.splice(i, 1);\n                }\n                else {\n                    nodes[i] = replacement;\n                }\n                if (!dontUpdateLastIndex) {\n                    nodes.claim_info.last_index = i;\n                }\n                return node;\n            }\n        }\n        // Otherwise, we try to find one before\n        // We iterate in reverse so that we don't go too far back\n        for (let i = nodes.claim_info.last_index - 1; i >= 0; i--) {\n            const node = nodes[i];\n            if (predicate(node)) {\n                const replacement = processNode(node);\n                if (replacement === undefined) {\n                    nodes.splice(i, 1);\n                }\n                else {\n                    nodes[i] = replacement;\n                }\n                if (!dontUpdateLastIndex) {\n                    nodes.claim_info.last_index = i;\n                }\n                else if (replacement === undefined) {\n                    // Since we spliced before the last_index, we decrease it\n                    nodes.claim_info.last_index--;\n                }\n                return node;\n            }\n        }\n        // If we can't find any matching node, we create a new one\n        return createNode();\n    })();\n    resultNode.claim_order = nodes.claim_info.total_claimed;\n    nodes.claim_info.total_claimed += 1;\n    return resultNode;\n}\nfunction claim_element_base(nodes, name, attributes, create_element) {\n    return claim_node(nodes, (node) => node.nodeName === name, (node) => {\n        const remove = [];\n        for (let j = 0; j < node.attributes.length; j++) {\n            const attribute = node.attributes[j];\n            if (!attributes[attribute.name]) {\n                remove.push(attribute.name);\n            }\n        }\n        remove.forEach(v => node.removeAttribute(v));\n        return undefined;\n    }, () => create_element(name));\n}\nfunction claim_element(nodes, name, attributes) {\n    return claim_element_base(nodes, name, attributes, element);\n}\nfunction claim_svg_element(nodes, name, attributes) {\n    return claim_element_base(nodes, name, attributes, svg_element);\n}\nfunction claim_text(nodes, data) {\n    return claim_node(nodes, (node) => node.nodeType === 3, (node) => {\n        const dataStr = '' + data;\n        if (node.data.startsWith(dataStr)) {\n            if (node.data.length !== dataStr.length) {\n                return node.splitText(dataStr.length);\n            }\n        }\n        else {\n            node.data = dataStr;\n        }\n    }, () => text(data), true // Text nodes should not update last index since it is likely not worth it to eliminate an increasing subsequence of actual elements\n    );\n}\nfunction claim_space(nodes) {\n    return claim_text(nodes, ' ');\n}\nfunction find_comment(nodes, text, start) {\n    for (let i = start; i < nodes.length; i += 1) {\n        const node = nodes[i];\n        if (node.nodeType === 8 /* comment node */ && node.textContent.trim() === text) {\n            return i;\n        }\n    }\n    return nodes.length;\n}\nfunction claim_html_tag(nodes) {\n    // find html opening tag\n    const start_index = find_comment(nodes, 'HTML_TAG_START', 0);\n    const end_index = find_comment(nodes, 'HTML_TAG_END', start_index);\n    if (start_index === end_index) {\n        return new HtmlTagHydration();\n    }\n    init_claim_info(nodes);\n    const html_tag_nodes = nodes.splice(start_index, end_index + 1);\n    detach(html_tag_nodes[0]);\n    detach(html_tag_nodes[html_tag_nodes.length - 1]);\n    const claimed_nodes = html_tag_nodes.slice(1, html_tag_nodes.length - 1);\n    for (const n of claimed_nodes) {\n        n.claim_order = nodes.claim_info.total_claimed;\n        nodes.claim_info.total_claimed += 1;\n    }\n    return new HtmlTagHydration(claimed_nodes);\n}\nfunction set_data(text, data) {\n    data = '' + data;\n    if (text.wholeText !== data)\n        text.data = data;\n}\nfunction set_input_value(input, value) {\n    input.value = value == null ? '' : value;\n}\nfunction set_input_type(input, type) {\n    try {\n        input.type = type;\n    }\n    catch (e) {\n        // do nothing\n    }\n}\nfunction set_style(node, key, value, important) {\n    node.style.setProperty(key, value, important ? 'important' : '');\n}\nfunction select_option(select, value) {\n    for (let i = 0; i < select.options.length; i += 1) {\n        const option = select.options[i];\n        if (option.__value === value) {\n            option.selected = true;\n            return;\n        }\n    }\n    select.selectedIndex = -1; // no option should be selected\n}\nfunction select_options(select, value) {\n    for (let i = 0; i < select.options.length; i += 1) {\n        const option = select.options[i];\n        option.selected = ~value.indexOf(option.__value);\n    }\n}\nfunction select_value(select) {\n    const selected_option = select.querySelector(':checked') || select.options[0];\n    return selected_option && selected_option.__value;\n}\nfunction select_multiple_value(select) {\n    return [].map.call(select.querySelectorAll(':checked'), option => option.__value);\n}\n// unfortunately this can't be a constant as that wouldn't be tree-shakeable\n// so we cache the result instead\nlet crossorigin;\nfunction is_crossorigin() {\n    if (crossorigin === undefined) {\n        crossorigin = false;\n        try {\n            if (typeof window !== 'undefined' && window.parent) {\n                void window.parent.document;\n            }\n        }\n        catch (error) {\n            crossorigin = true;\n        }\n    }\n    return crossorigin;\n}\nfunction add_resize_listener(node, fn) {\n    const computed_style = getComputedStyle(node);\n    if (computed_style.position === 'static') {\n        node.style.position = 'relative';\n    }\n    const iframe = element('iframe');\n    iframe.setAttribute('style', 'display: block; position: absolute; top: 0; left: 0; width: 100%; height: 100%; ' +\n        'overflow: hidden; border: 0; opacity: 0; pointer-events: none; z-index: -1;');\n    iframe.setAttribute('aria-hidden', 'true');\n    iframe.tabIndex = -1;\n    const crossorigin = is_crossorigin();\n    let unsubscribe;\n    if (crossorigin) {\n        iframe.src = \"data:text/html,<script>onresize=function(){parent.postMessage(0,'*')}</script>\";\n        unsubscribe = listen(window, 'message', (event) => {\n            if (event.source === iframe.contentWindow)\n                fn();\n        });\n    }\n    else {\n        iframe.src = 'about:blank';\n        iframe.onload = () => {\n            unsubscribe = listen(iframe.contentWindow, 'resize', fn);\n        };\n    }\n    append(node, iframe);\n    return () => {\n        if (crossorigin) {\n            unsubscribe();\n        }\n        else if (unsubscribe && iframe.contentWindow) {\n            unsubscribe();\n        }\n        detach(iframe);\n    };\n}\nfunction toggle_class(element, name, toggle) {\n    element.classList[toggle ? 'add' : 'remove'](name);\n}\nfunction custom_event(type, detail, bubbles = false) {\n    const e = document.createEvent('CustomEvent');\n    e.initCustomEvent(type, bubbles, false, detail);\n    return e;\n}\nfunction query_selector_all(selector, parent = document.body) {\n    return Array.from(parent.querySelectorAll(selector));\n}\nclass HtmlTag {\n    constructor() {\n        this.e = this.n = null;\n    }\n    c(html) {\n        this.h(html);\n    }\n    m(html, target, anchor = null) {\n        if (!this.e) {\n            this.e = element(target.nodeName);\n            this.t = target;\n            this.c(html);\n        }\n        this.i(anchor);\n    }\n    h(html) {\n        this.e.innerHTML = html;\n        this.n = Array.from(this.e.childNodes);\n    }\n    i(anchor) {\n        for (let i = 0; i < this.n.length; i += 1) {\n            insert(this.t, this.n[i], anchor);\n        }\n    }\n    p(html) {\n        this.d();\n        this.h(html);\n        this.i(this.a);\n    }\n    d() {\n        this.n.forEach(detach);\n    }\n}\nclass HtmlTagHydration extends HtmlTag {\n    constructor(claimed_nodes) {\n        super();\n        this.e = this.n = null;\n        this.l = claimed_nodes;\n    }\n    c(html) {\n        if (this.l) {\n            this.n = this.l;\n        }\n        else {\n            super.c(html);\n        }\n    }\n    i(anchor) {\n        for (let i = 0; i < this.n.length; i += 1) {\n            insert_hydration(this.t, this.n[i], anchor);\n        }\n    }\n}\nfunction attribute_to_object(attributes) {\n    const result = {};\n    for (const attribute of attributes) {\n        result[attribute.name] = attribute.value;\n    }\n    return result;\n}\nfunction get_custom_elements_slots(element) {\n    const result = {};\n    element.childNodes.forEach((node) => {\n        result[node.slot || 'default'] = true;\n    });\n    return result;\n}\n\nconst active_docs = new Set();\nlet active = 0;\n// https://github.com/darkskyapp/string-hash/blob/master/index.js\nfunction hash(str) {\n    let hash = 5381;\n    let i = str.length;\n    while (i--)\n        hash = ((hash << 5) - hash) ^ str.charCodeAt(i);\n    return hash >>> 0;\n}\nfunction create_rule(node, a, b, duration, delay, ease, fn, uid = 0) {\n    const step = 16.666 / duration;\n    let keyframes = '{\\n';\n    for (let p = 0; p <= 1; p += step) {\n        const t = a + (b - a) * ease(p);\n        keyframes += p * 100 + `%{${fn(t, 1 - t)}}\\n`;\n    }\n    const rule = keyframes + `100% {${fn(b, 1 - b)}}\\n}`;\n    const name = `__svelte_${hash(rule)}_${uid}`;\n    const doc = get_root_for_style(node);\n    active_docs.add(doc);\n    const stylesheet = doc.__svelte_stylesheet || (doc.__svelte_stylesheet = append_empty_stylesheet(node).sheet);\n    const current_rules = doc.__svelte_rules || (doc.__svelte_rules = {});\n    if (!current_rules[name]) {\n        current_rules[name] = true;\n        stylesheet.insertRule(`@keyframes ${name} ${rule}`, stylesheet.cssRules.length);\n    }\n    const animation = node.style.animation || '';\n    node.style.animation = `${animation ? `${animation}, ` : ''}${name} ${duration}ms linear ${delay}ms 1 both`;\n    active += 1;\n    return name;\n}\nfunction delete_rule(node, name) {\n    const previous = (node.style.animation || '').split(', ');\n    const next = previous.filter(name\n        ? anim => anim.indexOf(name) < 0 // remove specific animation\n        : anim => anim.indexOf('__svelte') === -1 // remove all Svelte animations\n    );\n    const deleted = previous.length - next.length;\n    if (deleted) {\n        node.style.animation = next.join(', ');\n        active -= deleted;\n        if (!active)\n            clear_rules();\n    }\n}\nfunction clear_rules() {\n    raf(() => {\n        if (active)\n            return;\n        active_docs.forEach(doc => {\n            const stylesheet = doc.__svelte_stylesheet;\n            let i = stylesheet.cssRules.length;\n            while (i--)\n                stylesheet.deleteRule(i);\n            doc.__svelte_rules = {};\n        });\n        active_docs.clear();\n    });\n}\n\nfunction create_animation(node, from, fn, params) {\n    if (!from)\n        return noop;\n    const to = node.getBoundingClientRect();\n    if (from.left === to.left && from.right === to.right && from.top === to.top && from.bottom === to.bottom)\n        return noop;\n    const { delay = 0, duration = 300, easing = identity, \n    // @ts-ignore todo: should this be separated from destructuring? Or start/end added to public api and documentation?\n    start: start_time = now() + delay, \n    // @ts-ignore todo:\n    end = start_time + duration, tick = noop, css } = fn(node, { from, to }, params);\n    let running = true;\n    let started = false;\n    let name;\n    function start() {\n        if (css) {\n            name = create_rule(node, 0, 1, duration, delay, easing, css);\n        }\n        if (!delay) {\n            started = true;\n        }\n    }\n    function stop() {\n        if (css)\n            delete_rule(node, name);\n        running = false;\n    }\n    loop(now => {\n        if (!started && now >= start_time) {\n            started = true;\n        }\n        if (started && now >= end) {\n            tick(1, 0);\n            stop();\n        }\n        if (!running) {\n            return false;\n        }\n        if (started) {\n            const p = now - start_time;\n            const t = 0 + 1 * easing(p / duration);\n            tick(t, 1 - t);\n        }\n        return true;\n    });\n    start();\n    tick(0, 1);\n    return stop;\n}\nfunction fix_position(node) {\n    const style = getComputedStyle(node);\n    if (style.position !== 'absolute' && style.position !== 'fixed') {\n        const { width, height } = style;\n        const a = node.getBoundingClientRect();\n        node.style.position = 'absolute';\n        node.style.width = width;\n        node.style.height = height;\n        add_transform(node, a);\n    }\n}\nfunction add_transform(node, a) {\n    const b = node.getBoundingClientRect();\n    if (a.left !== b.left || a.top !== b.top) {\n        const style = getComputedStyle(node);\n        const transform = style.transform === 'none' ? '' : style.transform;\n        node.style.transform = `${transform} translate(${a.left - b.left}px, ${a.top - b.top}px)`;\n    }\n}\n\nlet current_component;\nfunction set_current_component(component) {\n    current_component = component;\n}\nfunction get_current_component() {\n    if (!current_component)\n        throw new Error('Function called outside component initialization');\n    return current_component;\n}\nfunction beforeUpdate(fn) {\n    get_current_component().$$.before_update.push(fn);\n}\nfunction onMount(fn) {\n    get_current_component().$$.on_mount.push(fn);\n}\nfunction afterUpdate(fn) {\n    get_current_component().$$.after_update.push(fn);\n}\nfunction onDestroy(fn) {\n    get_current_component().$$.on_destroy.push(fn);\n}\nfunction createEventDispatcher() {\n    const component = get_current_component();\n    return (type, detail) => {\n        const callbacks = component.$$.callbacks[type];\n        if (callbacks) {\n            // TODO are there situations where events could be dispatched\n            // in a server (non-DOM) environment?\n            const event = custom_event(type, detail);\n            callbacks.slice().forEach(fn => {\n                fn.call(component, event);\n            });\n        }\n    };\n}\nfunction setContext(key, context) {\n    get_current_component().$$.context.set(key, context);\n}\nfunction getContext(key) {\n    return get_current_component().$$.context.get(key);\n}\nfunction getAllContexts() {\n    return get_current_component().$$.context;\n}\nfunction hasContext(key) {\n    return get_current_component().$$.context.has(key);\n}\n// TODO figure out if we still want to support\n// shorthand events, or if we want to implement\n// a real bubbling mechanism\nfunction bubble(component, event) {\n    const callbacks = component.$$.callbacks[event.type];\n    if (callbacks) {\n        // @ts-ignore\n        callbacks.slice().forEach(fn => fn.call(this, event));\n    }\n}\n\nconst dirty_components = [];\nconst intros = { enabled: false };\nconst binding_callbacks = [];\nconst render_callbacks = [];\nconst flush_callbacks = [];\nconst resolved_promise = Promise.resolve();\nlet update_scheduled = false;\nfunction schedule_update() {\n    if (!update_scheduled) {\n        update_scheduled = true;\n        resolved_promise.then(flush);\n    }\n}\nfunction tick() {\n    schedule_update();\n    return resolved_promise;\n}\nfunction add_render_callback(fn) {\n    render_callbacks.push(fn);\n}\nfunction add_flush_callback(fn) {\n    flush_callbacks.push(fn);\n}\nlet flushing = false;\nconst seen_callbacks = new Set();\nfunction flush() {\n    if (flushing)\n        return;\n    flushing = true;\n    do {\n        // first, call beforeUpdate functions\n        // and update components\n        for (let i = 0; i < dirty_components.length; i += 1) {\n            const component = dirty_components[i];\n            set_current_component(component);\n            update(component.$$);\n        }\n        set_current_component(null);\n        dirty_components.length = 0;\n        while (binding_callbacks.length)\n            binding_callbacks.pop()();\n        // then, once components are updated, call\n        // afterUpdate functions. This may cause\n        // subsequent updates...\n        for (let i = 0; i < render_callbacks.length; i += 1) {\n            const callback = render_callbacks[i];\n            if (!seen_callbacks.has(callback)) {\n                // ...so guard against infinite loops\n                seen_callbacks.add(callback);\n                callback();\n            }\n        }\n        render_callbacks.length = 0;\n    } while (dirty_components.length);\n    while (flush_callbacks.length) {\n        flush_callbacks.pop()();\n    }\n    update_scheduled = false;\n    flushing = false;\n    seen_callbacks.clear();\n}\nfunction update($$) {\n    if ($$.fragment !== null) {\n        $$.update();\n        run_all($$.before_update);\n        const dirty = $$.dirty;\n        $$.dirty = [-1];\n        $$.fragment && $$.fragment.p($$.ctx, dirty);\n        $$.after_update.forEach(add_render_callback);\n    }\n}\n\nlet promise;\nfunction wait() {\n    if (!promise) {\n        promise = Promise.resolve();\n        promise.then(() => {\n            promise = null;\n        });\n    }\n    return promise;\n}\nfunction dispatch(node, direction, kind) {\n    node.dispatchEvent(custom_event(`${direction ? 'intro' : 'outro'}${kind}`));\n}\nconst outroing = new Set();\nlet outros;\nfunction group_outros() {\n    outros = {\n        r: 0,\n        c: [],\n        p: outros // parent group\n    };\n}\nfunction check_outros() {\n    if (!outros.r) {\n        run_all(outros.c);\n    }\n    outros = outros.p;\n}\nfunction transition_in(block, local) {\n    if (block && block.i) {\n        outroing.delete(block);\n        block.i(local);\n    }\n}\nfunction transition_out(block, local, detach, callback) {\n    if (block && block.o) {\n        if (outroing.has(block))\n            return;\n        outroing.add(block);\n        outros.c.push(() => {\n            outroing.delete(block);\n            if (callback) {\n                if (detach)\n                    block.d(1);\n                callback();\n            }\n        });\n        block.o(local);\n    }\n}\nconst null_transition = { duration: 0 };\nfunction create_in_transition(node, fn, params) {\n    let config = fn(node, params);\n    let running = false;\n    let animation_name;\n    let task;\n    let uid = 0;\n    function cleanup() {\n        if (animation_name)\n            delete_rule(node, animation_name);\n    }\n    function go() {\n        const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n        if (css)\n            animation_name = create_rule(node, 0, 1, duration, delay, easing, css, uid++);\n        tick(0, 1);\n        const start_time = now() + delay;\n        const end_time = start_time + duration;\n        if (task)\n            task.abort();\n        running = true;\n        add_render_callback(() => dispatch(node, true, 'start'));\n        task = loop(now => {\n            if (running) {\n                if (now >= end_time) {\n                    tick(1, 0);\n                    dispatch(node, true, 'end');\n                    cleanup();\n                    return running = false;\n                }\n                if (now >= start_time) {\n                    const t = easing((now - start_time) / duration);\n                    tick(t, 1 - t);\n                }\n            }\n            return running;\n        });\n    }\n    let started = false;\n    return {\n        start() {\n            if (started)\n                return;\n            started = true;\n            delete_rule(node);\n            if (is_function(config)) {\n                config = config();\n                wait().then(go);\n            }\n            else {\n                go();\n            }\n        },\n        invalidate() {\n            started = false;\n        },\n        end() {\n            if (running) {\n                cleanup();\n                running = false;\n            }\n        }\n    };\n}\nfunction create_out_transition(node, fn, params) {\n    let config = fn(node, params);\n    let running = true;\n    let animation_name;\n    const group = outros;\n    group.r += 1;\n    function go() {\n        const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n        if (css)\n            animation_name = create_rule(node, 1, 0, duration, delay, easing, css);\n        const start_time = now() + delay;\n        const end_time = start_time + duration;\n        add_render_callback(() => dispatch(node, false, 'start'));\n        loop(now => {\n            if (running) {\n                if (now >= end_time) {\n                    tick(0, 1);\n                    dispatch(node, false, 'end');\n                    if (!--group.r) {\n                        // this will result in `end()` being called,\n                        // so we don't need to clean up here\n                        run_all(group.c);\n                    }\n                    return false;\n                }\n                if (now >= start_time) {\n                    const t = easing((now - start_time) / duration);\n                    tick(1 - t, t);\n                }\n            }\n            return running;\n        });\n    }\n    if (is_function(config)) {\n        wait().then(() => {\n            // @ts-ignore\n            config = config();\n            go();\n        });\n    }\n    else {\n        go();\n    }\n    return {\n        end(reset) {\n            if (reset && config.tick) {\n                config.tick(1, 0);\n            }\n            if (running) {\n                if (animation_name)\n                    delete_rule(node, animation_name);\n                running = false;\n            }\n        }\n    };\n}\nfunction create_bidirectional_transition(node, fn, params, intro) {\n    let config = fn(node, params);\n    let t = intro ? 0 : 1;\n    let running_program = null;\n    let pending_program = null;\n    let animation_name = null;\n    function clear_animation() {\n        if (animation_name)\n            delete_rule(node, animation_name);\n    }\n    function init(program, duration) {\n        const d = (program.b - t);\n        duration *= Math.abs(d);\n        return {\n            a: t,\n            b: program.b,\n            d,\n            duration,\n            start: program.start,\n            end: program.start + duration,\n            group: program.group\n        };\n    }\n    function go(b) {\n        const { delay = 0, duration = 300, easing = identity, tick = noop, css } = config || null_transition;\n        const program = {\n            start: now() + delay,\n            b\n        };\n        if (!b) {\n            // @ts-ignore todo: improve typings\n            program.group = outros;\n            outros.r += 1;\n        }\n        if (running_program || pending_program) {\n            pending_program = program;\n        }\n        else {\n            // if this is an intro, and there's a delay, we need to do\n            // an initial tick and/or apply CSS animation immediately\n            if (css) {\n                clear_animation();\n                animation_name = create_rule(node, t, b, duration, delay, easing, css);\n            }\n            if (b)\n                tick(0, 1);\n            running_program = init(program, duration);\n            add_render_callback(() => dispatch(node, b, 'start'));\n            loop(now => {\n                if (pending_program && now > pending_program.start) {\n                    running_program = init(pending_program, duration);\n                    pending_program = null;\n                    dispatch(node, running_program.b, 'start');\n                    if (css) {\n                        clear_animation();\n                        animation_name = create_rule(node, t, running_program.b, running_program.duration, 0, easing, config.css);\n                    }\n                }\n                if (running_program) {\n                    if (now >= running_program.end) {\n                        tick(t = running_program.b, 1 - t);\n                        dispatch(node, running_program.b, 'end');\n                        if (!pending_program) {\n                            // we're done\n                            if (running_program.b) {\n                                // intro — we can tidy up immediately\n                                clear_animation();\n                            }\n                            else {\n                                // outro — needs to be coordinated\n                                if (!--running_program.group.r)\n                                    run_all(running_program.group.c);\n                            }\n                        }\n                        running_program = null;\n                    }\n                    else if (now >= running_program.start) {\n                        const p = now - running_program.start;\n                        t = running_program.a + running_program.d * easing(p / running_program.duration);\n                        tick(t, 1 - t);\n                    }\n                }\n                return !!(running_program || pending_program);\n            });\n        }\n    }\n    return {\n        run(b) {\n            if (is_function(config)) {\n                wait().then(() => {\n                    // @ts-ignore\n                    config = config();\n                    go(b);\n                });\n            }\n            else {\n                go(b);\n            }\n        },\n        end() {\n            clear_animation();\n            running_program = pending_program = null;\n        }\n    };\n}\n\nfunction handle_promise(promise, info) {\n    const token = info.token = {};\n    function update(type, index, key, value) {\n        if (info.token !== token)\n            return;\n        info.resolved = value;\n        let child_ctx = info.ctx;\n        if (key !== undefined) {\n            child_ctx = child_ctx.slice();\n            child_ctx[key] = value;\n        }\n        const block = type && (info.current = type)(child_ctx);\n        let needs_flush = false;\n        if (info.block) {\n            if (info.blocks) {\n                info.blocks.forEach((block, i) => {\n                    if (i !== index && block) {\n                        group_outros();\n                        transition_out(block, 1, 1, () => {\n                            if (info.blocks[i] === block) {\n                                info.blocks[i] = null;\n                            }\n                        });\n                        check_outros();\n                    }\n                });\n            }\n            else {\n                info.block.d(1);\n            }\n            block.c();\n            transition_in(block, 1);\n            block.m(info.mount(), info.anchor);\n            needs_flush = true;\n        }\n        info.block = block;\n        if (info.blocks)\n            info.blocks[index] = block;\n        if (needs_flush) {\n            flush();\n        }\n    }\n    if (is_promise(promise)) {\n        const current_component = get_current_component();\n        promise.then(value => {\n            set_current_component(current_component);\n            update(info.then, 1, info.value, value);\n            set_current_component(null);\n        }, error => {\n            set_current_component(current_component);\n            update(info.catch, 2, info.error, error);\n            set_current_component(null);\n            if (!info.hasCatch) {\n                throw error;\n            }\n        });\n        // if we previously had a then/catch block, destroy it\n        if (info.current !== info.pending) {\n            update(info.pending, 0);\n            return true;\n        }\n    }\n    else {\n        if (info.current !== info.then) {\n            update(info.then, 1, info.value, promise);\n            return true;\n        }\n        info.resolved = promise;\n    }\n}\nfunction update_await_block_branch(info, ctx, dirty) {\n    const child_ctx = ctx.slice();\n    const { resolved } = info;\n    if (info.current === info.then) {\n        child_ctx[info.value] = resolved;\n    }\n    if (info.current === info.catch) {\n        child_ctx[info.error] = resolved;\n    }\n    info.block.p(child_ctx, dirty);\n}\n\nconst globals = (typeof window !== 'undefined'\n    ? window\n    : typeof globalThis !== 'undefined'\n        ? globalThis\n        : global);\n\nfunction destroy_block(block, lookup) {\n    block.d(1);\n    lookup.delete(block.key);\n}\nfunction outro_and_destroy_block(block, lookup) {\n    transition_out(block, 1, 1, () => {\n        lookup.delete(block.key);\n    });\n}\nfunction fix_and_destroy_block(block, lookup) {\n    block.f();\n    destroy_block(block, lookup);\n}\nfunction fix_and_outro_and_destroy_block(block, lookup) {\n    block.f();\n    outro_and_destroy_block(block, lookup);\n}\nfunction update_keyed_each(old_blocks, dirty, get_key, dynamic, ctx, list, lookup, node, destroy, create_each_block, next, get_context) {\n    let o = old_blocks.length;\n    let n = list.length;\n    let i = o;\n    const old_indexes = {};\n    while (i--)\n        old_indexes[old_blocks[i].key] = i;\n    const new_blocks = [];\n    const new_lookup = new Map();\n    const deltas = new Map();\n    i = n;\n    while (i--) {\n        const child_ctx = get_context(ctx, list, i);\n        const key = get_key(child_ctx);\n        let block = lookup.get(key);\n        if (!block) {\n            block = create_each_block(key, child_ctx);\n            block.c();\n        }\n        else if (dynamic) {\n            block.p(child_ctx, dirty);\n        }\n        new_lookup.set(key, new_blocks[i] = block);\n        if (key in old_indexes)\n            deltas.set(key, Math.abs(i - old_indexes[key]));\n    }\n    const will_move = new Set();\n    const did_move = new Set();\n    function insert(block) {\n        transition_in(block, 1);\n        block.m(node, next);\n        lookup.set(block.key, block);\n        next = block.first;\n        n--;\n    }\n    while (o && n) {\n        const new_block = new_blocks[n - 1];\n        const old_block = old_blocks[o - 1];\n        const new_key = new_block.key;\n        const old_key = old_block.key;\n        if (new_block === old_block) {\n            // do nothing\n            next = new_block.first;\n            o--;\n            n--;\n        }\n        else if (!new_lookup.has(old_key)) {\n            // remove old block\n            destroy(old_block, lookup);\n            o--;\n        }\n        else if (!lookup.has(new_key) || will_move.has(new_key)) {\n            insert(new_block);\n        }\n        else if (did_move.has(old_key)) {\n            o--;\n        }\n        else if (deltas.get(new_key) > deltas.get(old_key)) {\n            did_move.add(new_key);\n            insert(new_block);\n        }\n        else {\n            will_move.add(old_key);\n            o--;\n        }\n    }\n    while (o--) {\n        const old_block = old_blocks[o];\n        if (!new_lookup.has(old_block.key))\n            destroy(old_block, lookup);\n    }\n    while (n)\n        insert(new_blocks[n - 1]);\n    return new_blocks;\n}\nfunction validate_each_keys(ctx, list, get_context, get_key) {\n    const keys = new Set();\n    for (let i = 0; i < list.length; i++) {\n        const key = get_key(get_context(ctx, list, i));\n        if (keys.has(key)) {\n            throw new Error('Cannot have duplicate keys in a keyed each');\n        }\n        keys.add(key);\n    }\n}\n\nfunction get_spread_update(levels, updates) {\n    const update = {};\n    const to_null_out = {};\n    const accounted_for = { $$scope: 1 };\n    let i = levels.length;\n    while (i--) {\n        const o = levels[i];\n        const n = updates[i];\n        if (n) {\n            for (const key in o) {\n                if (!(key in n))\n                    to_null_out[key] = 1;\n            }\n            for (const key in n) {\n                if (!accounted_for[key]) {\n                    update[key] = n[key];\n                    accounted_for[key] = 1;\n                }\n            }\n            levels[i] = n;\n        }\n        else {\n            for (const key in o) {\n                accounted_for[key] = 1;\n            }\n        }\n    }\n    for (const key in to_null_out) {\n        if (!(key in update))\n            update[key] = undefined;\n    }\n    return update;\n}\nfunction get_spread_object(spread_props) {\n    return typeof spread_props === 'object' && spread_props !== null ? spread_props : {};\n}\n\n// source: https://html.spec.whatwg.org/multipage/indices.html\nconst boolean_attributes = new Set([\n    'allowfullscreen',\n    'allowpaymentrequest',\n    'async',\n    'autofocus',\n    'autoplay',\n    'checked',\n    'controls',\n    'default',\n    'defer',\n    'disabled',\n    'formnovalidate',\n    'hidden',\n    'ismap',\n    'loop',\n    'multiple',\n    'muted',\n    'nomodule',\n    'novalidate',\n    'open',\n    'playsinline',\n    'readonly',\n    'required',\n    'reversed',\n    'selected'\n]);\n\nconst invalid_attribute_name_character = /[\\s'\">/=\\u{FDD0}-\\u{FDEF}\\u{FFFE}\\u{FFFF}\\u{1FFFE}\\u{1FFFF}\\u{2FFFE}\\u{2FFFF}\\u{3FFFE}\\u{3FFFF}\\u{4FFFE}\\u{4FFFF}\\u{5FFFE}\\u{5FFFF}\\u{6FFFE}\\u{6FFFF}\\u{7FFFE}\\u{7FFFF}\\u{8FFFE}\\u{8FFFF}\\u{9FFFE}\\u{9FFFF}\\u{AFFFE}\\u{AFFFF}\\u{BFFFE}\\u{BFFFF}\\u{CFFFE}\\u{CFFFF}\\u{DFFFE}\\u{DFFFF}\\u{EFFFE}\\u{EFFFF}\\u{FFFFE}\\u{FFFFF}\\u{10FFFE}\\u{10FFFF}]/u;\n// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n// https://infra.spec.whatwg.org/#noncharacter\nfunction spread(args, classes_to_add) {\n    const attributes = Object.assign({}, ...args);\n    if (classes_to_add) {\n        if (attributes.class == null) {\n            attributes.class = classes_to_add;\n        }\n        else {\n            attributes.class += ' ' + classes_to_add;\n        }\n    }\n    let str = '';\n    Object.keys(attributes).forEach(name => {\n        if (invalid_attribute_name_character.test(name))\n            return;\n        const value = attributes[name];\n        if (value === true)\n            str += ' ' + name;\n        else if (boolean_attributes.has(name.toLowerCase())) {\n            if (value)\n                str += ' ' + name;\n        }\n        else if (value != null) {\n            str += ` ${name}=\"${value}\"`;\n        }\n    });\n    return str;\n}\nconst escaped = {\n    '\"': '&quot;',\n    \"'\": '&#39;',\n    '&': '&amp;',\n    '<': '&lt;',\n    '>': '&gt;'\n};\nfunction escape(html) {\n    return String(html).replace(/[\"'&<>]/g, match => escaped[match]);\n}\nfunction escape_attribute_value(value) {\n    return typeof value === 'string' ? escape(value) : value;\n}\nfunction escape_object(obj) {\n    const result = {};\n    for (const key in obj) {\n        result[key] = escape_attribute_value(obj[key]);\n    }\n    return result;\n}\nfunction each(items, fn) {\n    let str = '';\n    for (let i = 0; i < items.length; i += 1) {\n        str += fn(items[i], i);\n    }\n    return str;\n}\nconst missing_component = {\n    $$render: () => ''\n};\nfunction validate_component(component, name) {\n    if (!component || !component.$$render) {\n        if (name === 'svelte:component')\n            name += ' this={...}';\n        throw new Error(`<${name}> is not a valid SSR component. You may need to review your build config to ensure that dependencies are compiled, rather than imported as pre-compiled modules`);\n    }\n    return component;\n}\nfunction debug(file, line, column, values) {\n    console.log(`{@debug} ${file ? file + ' ' : ''}(${line}:${column})`); // eslint-disable-line no-console\n    console.log(values); // eslint-disable-line no-console\n    return '';\n}\nlet on_destroy;\nfunction create_ssr_component(fn) {\n    function $$render(result, props, bindings, slots, context) {\n        const parent_component = current_component;\n        const $$ = {\n            on_destroy,\n            context: new Map(context || (parent_component ? parent_component.$$.context : [])),\n            // these will be immediately discarded\n            on_mount: [],\n            before_update: [],\n            after_update: [],\n            callbacks: blank_object()\n        };\n        set_current_component({ $$ });\n        const html = fn(result, props, bindings, slots);\n        set_current_component(parent_component);\n        return html;\n    }\n    return {\n        render: (props = {}, { $$slots = {}, context = new Map() } = {}) => {\n            on_destroy = [];\n            const result = { title: '', head: '', css: new Set() };\n            const html = $$render(result, props, {}, $$slots, context);\n            run_all(on_destroy);\n            return {\n                html,\n                css: {\n                    code: Array.from(result.css).map(css => css.code).join('\\n'),\n                    map: null // TODO\n                },\n                head: result.title + result.head\n            };\n        },\n        $$render\n    };\n}\nfunction add_attribute(name, value, boolean) {\n    if (value == null || (boolean && !value))\n        return '';\n    return ` ${name}${value === true ? '' : `=${typeof value === 'string' ? JSON.stringify(escape(value)) : `\"${value}\"`}`}`;\n}\nfunction add_classes(classes) {\n    return classes ? ` class=\"${classes}\"` : '';\n}\n\nfunction bind(component, name, callback) {\n    const index = component.$$.props[name];\n    if (index !== undefined) {\n        component.$$.bound[index] = callback;\n        callback(component.$$.ctx[index]);\n    }\n}\nfunction create_component(block) {\n    block && block.c();\n}\nfunction claim_component(block, parent_nodes) {\n    block && block.l(parent_nodes);\n}\nfunction mount_component(component, target, anchor, customElement) {\n    const { fragment, on_mount, on_destroy, after_update } = component.$$;\n    fragment && fragment.m(target, anchor);\n    if (!customElement) {\n        // onMount happens before the initial afterUpdate\n        add_render_callback(() => {\n            const new_on_destroy = on_mount.map(run).filter(is_function);\n            if (on_destroy) {\n                on_destroy.push(...new_on_destroy);\n            }\n            else {\n                // Edge case - component was destroyed immediately,\n                // most likely as a result of a binding initialising\n                run_all(new_on_destroy);\n            }\n            component.$$.on_mount = [];\n        });\n    }\n    after_update.forEach(add_render_callback);\n}\nfunction destroy_component(component, detaching) {\n    const $$ = component.$$;\n    if ($$.fragment !== null) {\n        run_all($$.on_destroy);\n        $$.fragment && $$.fragment.d(detaching);\n        // TODO null out other refs, including component.$$ (but need to\n        // preserve final state?)\n        $$.on_destroy = $$.fragment = null;\n        $$.ctx = [];\n    }\n}\nfunction make_dirty(component, i) {\n    if (component.$$.dirty[0] === -1) {\n        dirty_components.push(component);\n        schedule_update();\n        component.$$.dirty.fill(0);\n    }\n    component.$$.dirty[(i / 31) | 0] |= (1 << (i % 31));\n}\nfunction init(component, options, instance, create_fragment, not_equal, props, append_styles, dirty = [-1]) {\n    const parent_component = current_component;\n    set_current_component(component);\n    const $$ = component.$$ = {\n        fragment: null,\n        ctx: null,\n        // state\n        props,\n        update: noop,\n        not_equal,\n        bound: blank_object(),\n        // lifecycle\n        on_mount: [],\n        on_destroy: [],\n        on_disconnect: [],\n        before_update: [],\n        after_update: [],\n        context: new Map(options.context || (parent_component ? parent_component.$$.context : [])),\n        // everything else\n        callbacks: blank_object(),\n        dirty,\n        skip_bound: false,\n        root: options.target || parent_component.$$.root\n    };\n    append_styles && append_styles($$.root);\n    let ready = false;\n    $$.ctx = instance\n        ? instance(component, options.props || {}, (i, ret, ...rest) => {\n            const value = rest.length ? rest[0] : ret;\n            if ($$.ctx && not_equal($$.ctx[i], $$.ctx[i] = value)) {\n                if (!$$.skip_bound && $$.bound[i])\n                    $$.bound[i](value);\n                if (ready)\n                    make_dirty(component, i);\n            }\n            return ret;\n        })\n        : [];\n    $$.update();\n    ready = true;\n    run_all($$.before_update);\n    // `false` as a special case of no DOM component\n    $$.fragment = create_fragment ? create_fragment($$.ctx) : false;\n    if (options.target) {\n        if (options.hydrate) {\n            start_hydrating();\n            const nodes = children(options.target);\n            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n            $$.fragment && $$.fragment.l(nodes);\n            nodes.forEach(detach);\n        }\n        else {\n            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n            $$.fragment && $$.fragment.c();\n        }\n        if (options.intro)\n            transition_in(component.$$.fragment);\n        mount_component(component, options.target, options.anchor, options.customElement);\n        end_hydrating();\n        flush();\n    }\n    set_current_component(parent_component);\n}\nlet SvelteElement;\nif (typeof HTMLElement === 'function') {\n    SvelteElement = class extends HTMLElement {\n        constructor() {\n            super();\n            this.attachShadow({ mode: 'open' });\n        }\n        connectedCallback() {\n            const { on_mount } = this.$$;\n            this.$$.on_disconnect = on_mount.map(run).filter(is_function);\n            // @ts-ignore todo: improve typings\n            for (const key in this.$$.slotted) {\n                // @ts-ignore todo: improve typings\n                this.appendChild(this.$$.slotted[key]);\n            }\n        }\n        attributeChangedCallback(attr, _oldValue, newValue) {\n            this[attr] = newValue;\n        }\n        disconnectedCallback() {\n            run_all(this.$$.on_disconnect);\n        }\n        $destroy() {\n            destroy_component(this, 1);\n            this.$destroy = noop;\n        }\n        $on(type, callback) {\n            // TODO should this delegate to addEventListener?\n            const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));\n            callbacks.push(callback);\n            return () => {\n                const index = callbacks.indexOf(callback);\n                if (index !== -1)\n                    callbacks.splice(index, 1);\n            };\n        }\n        $set($$props) {\n            if (this.$$set && !is_empty($$props)) {\n                this.$$.skip_bound = true;\n                this.$$set($$props);\n                this.$$.skip_bound = false;\n            }\n        }\n    };\n}\n/**\n * Base class for Svelte components. Used when dev=false.\n */\nclass SvelteComponent {\n    $destroy() {\n        destroy_component(this, 1);\n        this.$destroy = noop;\n    }\n    $on(type, callback) {\n        const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));\n        callbacks.push(callback);\n        return () => {\n            const index = callbacks.indexOf(callback);\n            if (index !== -1)\n                callbacks.splice(index, 1);\n        };\n    }\n    $set($$props) {\n        if (this.$$set && !is_empty($$props)) {\n            this.$$.skip_bound = true;\n            this.$$set($$props);\n            this.$$.skip_bound = false;\n        }\n    }\n}\n\nfunction dispatch_dev(type, detail) {\n    document.dispatchEvent(custom_event(type, Object.assign({ version: '3.44.2' }, detail), true));\n}\nfunction append_dev(target, node) {\n    dispatch_dev('SvelteDOMInsert', { target, node });\n    append(target, node);\n}\nfunction append_hydration_dev(target, node) {\n    dispatch_dev('SvelteDOMInsert', { target, node });\n    append_hydration(target, node);\n}\nfunction insert_dev(target, node, anchor) {\n    dispatch_dev('SvelteDOMInsert', { target, node, anchor });\n    insert(target, node, anchor);\n}\nfunction insert_hydration_dev(target, node, anchor) {\n    dispatch_dev('SvelteDOMInsert', { target, node, anchor });\n    insert_hydration(target, node, anchor);\n}\nfunction detach_dev(node) {\n    dispatch_dev('SvelteDOMRemove', { node });\n    detach(node);\n}\nfunction detach_between_dev(before, after) {\n    while (before.nextSibling && before.nextSibling !== after) {\n        detach_dev(before.nextSibling);\n    }\n}\nfunction detach_before_dev(after) {\n    while (after.previousSibling) {\n        detach_dev(after.previousSibling);\n    }\n}\nfunction detach_after_dev(before) {\n    while (before.nextSibling) {\n        detach_dev(before.nextSibling);\n    }\n}\nfunction listen_dev(node, event, handler, options, has_prevent_default, has_stop_propagation) {\n    const modifiers = options === true ? ['capture'] : options ? Array.from(Object.keys(options)) : [];\n    if (has_prevent_default)\n        modifiers.push('preventDefault');\n    if (has_stop_propagation)\n        modifiers.push('stopPropagation');\n    dispatch_dev('SvelteDOMAddEventListener', { node, event, handler, modifiers });\n    const dispose = listen(node, event, handler, options);\n    return () => {\n        dispatch_dev('SvelteDOMRemoveEventListener', { node, event, handler, modifiers });\n        dispose();\n    };\n}\nfunction attr_dev(node, attribute, value) {\n    attr(node, attribute, value);\n    if (value == null)\n        dispatch_dev('SvelteDOMRemoveAttribute', { node, attribute });\n    else\n        dispatch_dev('SvelteDOMSetAttribute', { node, attribute, value });\n}\nfunction prop_dev(node, property, value) {\n    node[property] = value;\n    dispatch_dev('SvelteDOMSetProperty', { node, property, value });\n}\nfunction dataset_dev(node, property, value) {\n    node.dataset[property] = value;\n    dispatch_dev('SvelteDOMSetDataset', { node, property, value });\n}\nfunction set_data_dev(text, data) {\n    data = '' + data;\n    if (text.wholeText === data)\n        return;\n    dispatch_dev('SvelteDOMSetData', { node: text, data });\n    text.data = data;\n}\nfunction validate_each_argument(arg) {\n    if (typeof arg !== 'string' && !(arg && typeof arg === 'object' && 'length' in arg)) {\n        let msg = '{#each} only iterates over array-like objects.';\n        if (typeof Symbol === 'function' && arg && Symbol.iterator in arg) {\n            msg += ' You can use a spread to convert this iterable into an array.';\n        }\n        throw new Error(msg);\n    }\n}\nfunction validate_slots(name, slot, keys) {\n    for (const slot_key of Object.keys(slot)) {\n        if (!~keys.indexOf(slot_key)) {\n            console.warn(`<${name}> received an unexpected slot \"${slot_key}\".`);\n        }\n    }\n}\n/**\n * Base class for Svelte components with some minor dev-enhancements. Used when dev=true.\n */\nclass SvelteComponentDev extends SvelteComponent {\n    constructor(options) {\n        if (!options || (!options.target && !options.$$inline)) {\n            throw new Error(\"'target' is a required option\");\n        }\n        super();\n    }\n    $destroy() {\n        super.$destroy();\n        this.$destroy = () => {\n            console.warn('Component was already destroyed'); // eslint-disable-line no-console\n        };\n    }\n    $capture_state() { }\n    $inject_state() { }\n}\n/**\n * Base class to create strongly typed Svelte components.\n * This only exists for typing purposes and should be used in `.d.ts` files.\n *\n * ### Example:\n *\n * You have component library on npm called `component-library`, from which\n * you export a component called `MyComponent`. For Svelte+TypeScript users,\n * you want to provide typings. Therefore you create a `index.d.ts`:\n * ```ts\n * import { SvelteComponentTyped } from \"svelte\";\n * export class MyComponent extends SvelteComponentTyped<{foo: string}> {}\n * ```\n * Typing this makes it possible for IDEs like VS Code with the Svelte extension\n * to provide intellisense and to use the component like this in a Svelte file\n * with TypeScript:\n * ```svelte\n * <script lang=\"ts\">\n * \timport { MyComponent } from \"component-library\";\n * </script>\n * <MyComponent foo={'bar'} />\n * ```\n *\n * #### Why not make this part of `SvelteComponent(Dev)`?\n * Because\n * ```ts\n * class ASubclassOfSvelteComponent extends SvelteComponent<{foo: string}> {}\n * const component: typeof SvelteComponent = ASubclassOfSvelteComponent;\n * ```\n * will throw a type error, so we need to separate the more strictly typed class.\n */\nclass SvelteComponentTyped extends SvelteComponentDev {\n    constructor(options) {\n        super(options);\n    }\n}\nfunction loop_guard(timeout) {\n    const start = Date.now();\n    return () => {\n        if (Date.now() - start > timeout) {\n            throw new Error('Infinite loop detected');\n        }\n    };\n}\n\nexport { HtmlTag, HtmlTagHydration, SvelteComponent, SvelteComponentDev, SvelteComponentTyped, SvelteElement, action_destroyer, add_attribute, add_classes, add_flush_callback, add_location, add_render_callback, add_resize_listener, add_transform, afterUpdate, append, append_dev, append_empty_stylesheet, append_hydration, append_hydration_dev, append_styles, assign, attr, attr_dev, attribute_to_object, beforeUpdate, bind, binding_callbacks, blank_object, bubble, check_outros, children, claim_component, claim_element, claim_html_tag, claim_space, claim_svg_element, claim_text, clear_loops, component_subscribe, compute_rest_props, compute_slots, createEventDispatcher, create_animation, create_bidirectional_transition, create_component, create_in_transition, create_out_transition, create_slot, create_ssr_component, current_component, custom_event, dataset_dev, debug, destroy_block, destroy_component, destroy_each, detach, detach_after_dev, detach_before_dev, detach_between_dev, detach_dev, dirty_components, dispatch_dev, each, element, element_is, empty, end_hydrating, escape, escape_attribute_value, escape_object, escaped, exclude_internal_props, fix_and_destroy_block, fix_and_outro_and_destroy_block, fix_position, flush, getAllContexts, getContext, get_all_dirty_from_scope, get_binding_group_value, get_current_component, get_custom_elements_slots, get_root_for_style, get_slot_changes, get_spread_object, get_spread_update, get_store_value, globals, group_outros, handle_promise, hasContext, has_prop, identity, init, insert, insert_dev, insert_hydration, insert_hydration_dev, intros, invalid_attribute_name_character, is_client, is_crossorigin, is_empty, is_function, is_promise, listen, listen_dev, loop, loop_guard, missing_component, mount_component, noop, not_equal, now, null_to_empty, object_without_properties, onDestroy, onMount, once, outro_and_destroy_block, prevent_default, prop_dev, query_selector_all, raf, run, run_all, safe_not_equal, schedule_update, select_multiple_value, select_option, select_options, select_value, self, setContext, set_attributes, set_current_component, set_custom_element_data, set_data, set_data_dev, set_input_type, set_input_value, set_now, set_raf, set_store_value, set_style, set_svg_attributes, space, spread, src_url_equal, start_hydrating, stop_propagation, subscribe, svg_element, text, tick, time_ranges_to_array, to_number, toggle_class, transition_in, transition_out, trusted, update_await_block_branch, update_keyed_each, update_slot, update_slot_base, validate_component, validate_each_argument, validate_each_keys, validate_slots, validate_store, xlink_attr };\n","/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Firebase constants.  Some of these (@defines) can be overridden at compile-time.\r\n */\r\nconst CONSTANTS = {\r\n    /**\r\n     * @define {boolean} Whether this is the client Node.js SDK.\r\n     */\r\n    NODE_CLIENT: false,\r\n    /**\r\n     * @define {boolean} Whether this is the Admin Node.js SDK.\r\n     */\r\n    NODE_ADMIN: false,\r\n    /**\r\n     * Firebase SDK Version\r\n     */\r\n    SDK_VERSION: '${JSCORE_VERSION}'\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Throws an error if the provided assertion is falsy\r\n */\r\nconst assert = function (assertion, message) {\r\n    if (!assertion) {\r\n        throw assertionError(message);\r\n    }\r\n};\r\n/**\r\n * Returns an Error object suitable for throwing.\r\n */\r\nconst assertionError = function (message) {\r\n    return new Error('Firebase Database (' +\r\n        CONSTANTS.SDK_VERSION +\r\n        ') INTERNAL ASSERT FAILED: ' +\r\n        message);\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst stringToByteArray$1 = function (str) {\r\n    // TODO(user): Use native implementations if/when available\r\n    const out = [];\r\n    let p = 0;\r\n    for (let i = 0; i < str.length; i++) {\r\n        let c = str.charCodeAt(i);\r\n        if (c < 128) {\r\n            out[p++] = c;\r\n        }\r\n        else if (c < 2048) {\r\n            out[p++] = (c >> 6) | 192;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else if ((c & 0xfc00) === 0xd800 &&\r\n            i + 1 < str.length &&\r\n            (str.charCodeAt(i + 1) & 0xfc00) === 0xdc00) {\r\n            // Surrogate Pair\r\n            c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);\r\n            out[p++] = (c >> 18) | 240;\r\n            out[p++] = ((c >> 12) & 63) | 128;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else {\r\n            out[p++] = (c >> 12) | 224;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n    }\r\n    return out;\r\n};\r\n/**\r\n * Turns an array of numbers into the string given by the concatenation of the\r\n * characters to which the numbers correspond.\r\n * @param bytes Array of numbers representing characters.\r\n * @return Stringification of the array.\r\n */\r\nconst byteArrayToString = function (bytes) {\r\n    // TODO(user): Use native implementations if/when available\r\n    const out = [];\r\n    let pos = 0, c = 0;\r\n    while (pos < bytes.length) {\r\n        const c1 = bytes[pos++];\r\n        if (c1 < 128) {\r\n            out[c++] = String.fromCharCode(c1);\r\n        }\r\n        else if (c1 > 191 && c1 < 224) {\r\n            const c2 = bytes[pos++];\r\n            out[c++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));\r\n        }\r\n        else if (c1 > 239 && c1 < 365) {\r\n            // Surrogate Pair\r\n            const c2 = bytes[pos++];\r\n            const c3 = bytes[pos++];\r\n            const c4 = bytes[pos++];\r\n            const u = (((c1 & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63)) -\r\n                0x10000;\r\n            out[c++] = String.fromCharCode(0xd800 + (u >> 10));\r\n            out[c++] = String.fromCharCode(0xdc00 + (u & 1023));\r\n        }\r\n        else {\r\n            const c2 = bytes[pos++];\r\n            const c3 = bytes[pos++];\r\n            out[c++] = String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));\r\n        }\r\n    }\r\n    return out.join('');\r\n};\r\n// We define it as an object literal instead of a class because a class compiled down to es5 can't\r\n// be treeshaked. https://github.com/rollup/rollup/issues/1691\r\n// Static lookup maps, lazily populated by init_()\r\nconst base64 = {\r\n    /**\r\n     * Maps bytes to characters.\r\n     */\r\n    byteToCharMap_: null,\r\n    /**\r\n     * Maps characters to bytes.\r\n     */\r\n    charToByteMap_: null,\r\n    /**\r\n     * Maps bytes to websafe characters.\r\n     * @private\r\n     */\r\n    byteToCharMapWebSafe_: null,\r\n    /**\r\n     * Maps websafe characters to bytes.\r\n     * @private\r\n     */\r\n    charToByteMapWebSafe_: null,\r\n    /**\r\n     * Our default alphabet, shared between\r\n     * ENCODED_VALS and ENCODED_VALS_WEBSAFE\r\n     */\r\n    ENCODED_VALS_BASE: 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',\r\n    /**\r\n     * Our default alphabet. Value 64 (=) is special; it means \"nothing.\"\r\n     */\r\n    get ENCODED_VALS() {\r\n        return this.ENCODED_VALS_BASE + '+/=';\r\n    },\r\n    /**\r\n     * Our websafe alphabet.\r\n     */\r\n    get ENCODED_VALS_WEBSAFE() {\r\n        return this.ENCODED_VALS_BASE + '-_.';\r\n    },\r\n    /**\r\n     * Whether this browser supports the atob and btoa functions. This extension\r\n     * started at Mozilla but is now implemented by many browsers. We use the\r\n     * ASSUME_* variables to avoid pulling in the full useragent detection library\r\n     * but still allowing the standard per-browser compilations.\r\n     *\r\n     */\r\n    HAS_NATIVE_SUPPORT: typeof atob === 'function',\r\n    /**\r\n     * Base64-encode an array of bytes.\r\n     *\r\n     * @param input An array of bytes (numbers with\r\n     *     value in [0, 255]) to encode.\r\n     * @param webSafe Boolean indicating we should use the\r\n     *     alternative alphabet.\r\n     * @return The base64 encoded string.\r\n     */\r\n    encodeByteArray(input, webSafe) {\r\n        if (!Array.isArray(input)) {\r\n            throw Error('encodeByteArray takes an array as a parameter');\r\n        }\r\n        this.init_();\r\n        const byteToCharMap = webSafe\r\n            ? this.byteToCharMapWebSafe_\r\n            : this.byteToCharMap_;\r\n        const output = [];\r\n        for (let i = 0; i < input.length; i += 3) {\r\n            const byte1 = input[i];\r\n            const haveByte2 = i + 1 < input.length;\r\n            const byte2 = haveByte2 ? input[i + 1] : 0;\r\n            const haveByte3 = i + 2 < input.length;\r\n            const byte3 = haveByte3 ? input[i + 2] : 0;\r\n            const outByte1 = byte1 >> 2;\r\n            const outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);\r\n            let outByte3 = ((byte2 & 0x0f) << 2) | (byte3 >> 6);\r\n            let outByte4 = byte3 & 0x3f;\r\n            if (!haveByte3) {\r\n                outByte4 = 64;\r\n                if (!haveByte2) {\r\n                    outByte3 = 64;\r\n                }\r\n            }\r\n            output.push(byteToCharMap[outByte1], byteToCharMap[outByte2], byteToCharMap[outByte3], byteToCharMap[outByte4]);\r\n        }\r\n        return output.join('');\r\n    },\r\n    /**\r\n     * Base64-encode a string.\r\n     *\r\n     * @param input A string to encode.\r\n     * @param webSafe If true, we should use the\r\n     *     alternative alphabet.\r\n     * @return The base64 encoded string.\r\n     */\r\n    encodeString(input, webSafe) {\r\n        // Shortcut for Mozilla browsers that implement\r\n        // a native base64 encoder in the form of \"btoa/atob\"\r\n        if (this.HAS_NATIVE_SUPPORT && !webSafe) {\r\n            return btoa(input);\r\n        }\r\n        return this.encodeByteArray(stringToByteArray$1(input), webSafe);\r\n    },\r\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * @param input to decode.\r\n     * @param webSafe True if we should use the\r\n     *     alternative alphabet.\r\n     * @return string representing the decoded value.\r\n     */\r\n    decodeString(input, webSafe) {\r\n        // Shortcut for Mozilla browsers that implement\r\n        // a native base64 encoder in the form of \"btoa/atob\"\r\n        if (this.HAS_NATIVE_SUPPORT && !webSafe) {\r\n            return atob(input);\r\n        }\r\n        return byteArrayToString(this.decodeStringToByteArray(input, webSafe));\r\n    },\r\n    /**\r\n     * Base64-decode a string.\r\n     *\r\n     * In base-64 decoding, groups of four characters are converted into three\r\n     * bytes.  If the encoder did not apply padding, the input length may not\r\n     * be a multiple of 4.\r\n     *\r\n     * In this case, the last group will have fewer than 4 characters, and\r\n     * padding will be inferred.  If the group has one or two characters, it decodes\r\n     * to one byte.  If the group has three characters, it decodes to two bytes.\r\n     *\r\n     * @param input Input to decode.\r\n     * @param webSafe True if we should use the web-safe alphabet.\r\n     * @return bytes representing the decoded value.\r\n     */\r\n    decodeStringToByteArray(input, webSafe) {\r\n        this.init_();\r\n        const charToByteMap = webSafe\r\n            ? this.charToByteMapWebSafe_\r\n            : this.charToByteMap_;\r\n        const output = [];\r\n        for (let i = 0; i < input.length;) {\r\n            const byte1 = charToByteMap[input.charAt(i++)];\r\n            const haveByte2 = i < input.length;\r\n            const byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;\r\n            ++i;\r\n            const haveByte3 = i < input.length;\r\n            const byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;\r\n            ++i;\r\n            const haveByte4 = i < input.length;\r\n            const byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;\r\n            ++i;\r\n            if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {\r\n                throw Error();\r\n            }\r\n            const outByte1 = (byte1 << 2) | (byte2 >> 4);\r\n            output.push(outByte1);\r\n            if (byte3 !== 64) {\r\n                const outByte2 = ((byte2 << 4) & 0xf0) | (byte3 >> 2);\r\n                output.push(outByte2);\r\n                if (byte4 !== 64) {\r\n                    const outByte3 = ((byte3 << 6) & 0xc0) | byte4;\r\n                    output.push(outByte3);\r\n                }\r\n            }\r\n        }\r\n        return output;\r\n    },\r\n    /**\r\n     * Lazy static initialization function. Called before\r\n     * accessing any of the static map variables.\r\n     * @private\r\n     */\r\n    init_() {\r\n        if (!this.byteToCharMap_) {\r\n            this.byteToCharMap_ = {};\r\n            this.charToByteMap_ = {};\r\n            this.byteToCharMapWebSafe_ = {};\r\n            this.charToByteMapWebSafe_ = {};\r\n            // We want quick mappings back and forth, so we precompute two maps.\r\n            for (let i = 0; i < this.ENCODED_VALS.length; i++) {\r\n                this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);\r\n                this.charToByteMap_[this.byteToCharMap_[i]] = i;\r\n                this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);\r\n                this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;\r\n                // Be forgiving when decoding and correctly decode both encodings.\r\n                if (i >= this.ENCODED_VALS_BASE.length) {\r\n                    this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;\r\n                    this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;\r\n                }\r\n            }\r\n        }\r\n    }\r\n};\r\n/**\r\n * URL-safe base64 encoding\r\n */\r\nconst base64Encode = function (str) {\r\n    const utf8Bytes = stringToByteArray$1(str);\r\n    return base64.encodeByteArray(utf8Bytes, true);\r\n};\r\n/**\r\n * URL-safe base64 encoding (without \".\" padding in the end).\r\n * e.g. Used in JSON Web Token (JWT) parts.\r\n */\r\nconst base64urlEncodeWithoutPadding = function (str) {\r\n    // Use base64url encoding and remove padding in the end (dot characters).\r\n    return base64Encode(str).replace(/\\./g, '');\r\n};\r\n/**\r\n * URL-safe base64 decoding\r\n *\r\n * NOTE: DO NOT use the global atob() function - it does NOT support the\r\n * base64Url variant encoding.\r\n *\r\n * @param str To be decoded\r\n * @return Decoded result, if possible\r\n */\r\nconst base64Decode = function (str) {\r\n    try {\r\n        return base64.decodeString(str, true);\r\n    }\r\n    catch (e) {\r\n        console.error('base64Decode failed: ', e);\r\n    }\r\n    return null;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Do a deep-copy of basic JavaScript Objects or Arrays.\r\n */\r\nfunction deepCopy(value) {\r\n    return deepExtend(undefined, value);\r\n}\r\n/**\r\n * Copy properties from source to target (recursively allows extension\r\n * of Objects and Arrays).  Scalar values in the target are over-written.\r\n * If target is undefined, an object of the appropriate type will be created\r\n * (and returned).\r\n *\r\n * We recursively copy all child properties of plain Objects in the source- so\r\n * that namespace- like dictionaries are merged.\r\n *\r\n * Note that the target can be a function, in which case the properties in\r\n * the source Object are copied onto it as static properties of the Function.\r\n *\r\n * Note: we don't merge __proto__ to prevent prototype pollution\r\n */\r\nfunction deepExtend(target, source) {\r\n    if (!(source instanceof Object)) {\r\n        return source;\r\n    }\r\n    switch (source.constructor) {\r\n        case Date:\r\n            // Treat Dates like scalars; if the target date object had any child\r\n            // properties - they will be lost!\r\n            const dateValue = source;\r\n            return new Date(dateValue.getTime());\r\n        case Object:\r\n            if (target === undefined) {\r\n                target = {};\r\n            }\r\n            break;\r\n        case Array:\r\n            // Always copy the array source and overwrite the target.\r\n            target = [];\r\n            break;\r\n        default:\r\n            // Not a plain Object - treat it as a scalar.\r\n            return source;\r\n    }\r\n    for (const prop in source) {\r\n        // use isValidKey to guard against prototype pollution. See https://snyk.io/vuln/SNYK-JS-LODASH-450202\r\n        if (!source.hasOwnProperty(prop) || !isValidKey(prop)) {\r\n            continue;\r\n        }\r\n        target[prop] = deepExtend(target[prop], source[prop]);\r\n    }\r\n    return target;\r\n}\r\nfunction isValidKey(key) {\r\n    return key !== '__proto__';\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass Deferred {\r\n    constructor() {\r\n        this.reject = () => { };\r\n        this.resolve = () => { };\r\n        this.promise = new Promise((resolve, reject) => {\r\n            this.resolve = resolve;\r\n            this.reject = reject;\r\n        });\r\n    }\r\n    /**\r\n     * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around\r\n     * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback\r\n     * and returns a node-style callback which will resolve or reject the Deferred's promise.\r\n     */\r\n    wrapCallback(callback) {\r\n        return (error, value) => {\r\n            if (error) {\r\n                this.reject(error);\r\n            }\r\n            else {\r\n                this.resolve(value);\r\n            }\r\n            if (typeof callback === 'function') {\r\n                // Attaching noop handler just in case developer wasn't expecting\r\n                // promises\r\n                this.promise.catch(() => { });\r\n                // Some of our callbacks don't expect a value and our own tests\r\n                // assert that the parameter length is 1\r\n                if (callback.length === 1) {\r\n                    callback(error);\r\n                }\r\n                else {\r\n                    callback(error, value);\r\n                }\r\n            }\r\n        };\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction createMockUserToken(token, projectId) {\r\n    if (token.uid) {\r\n        throw new Error('The \"uid\" field is no longer supported by mockUserToken. Please use \"sub\" instead for Firebase Auth User ID.');\r\n    }\r\n    // Unsecured JWTs use \"none\" as the algorithm.\r\n    const header = {\r\n        alg: 'none',\r\n        type: 'JWT'\r\n    };\r\n    const project = projectId || 'demo-project';\r\n    const iat = token.iat || 0;\r\n    const sub = token.sub || token.user_id;\r\n    if (!sub) {\r\n        throw new Error(\"mockUserToken must contain 'sub' or 'user_id' field!\");\r\n    }\r\n    const payload = Object.assign({ \r\n        // Set all required fields to decent defaults\r\n        iss: `https://securetoken.google.com/${project}`, aud: project, iat, exp: iat + 3600, auth_time: iat, sub, user_id: sub, firebase: {\r\n            sign_in_provider: 'custom',\r\n            identities: {}\r\n        } }, token);\r\n    // Unsecured JWTs use the empty string as a signature.\r\n    const signature = '';\r\n    return [\r\n        base64urlEncodeWithoutPadding(JSON.stringify(header)),\r\n        base64urlEncodeWithoutPadding(JSON.stringify(payload)),\r\n        signature\r\n    ].join('.');\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns navigator.userAgent string or '' if it's not defined.\r\n * @return user agent string\r\n */\r\nfunction getUA() {\r\n    if (typeof navigator !== 'undefined' &&\r\n        typeof navigator['userAgent'] === 'string') {\r\n        return navigator['userAgent'];\r\n    }\r\n    else {\r\n        return '';\r\n    }\r\n}\r\n/**\r\n * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.\r\n *\r\n * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap\r\n * in the Ripple emulator) nor Cordova `onDeviceReady`, which would normally\r\n * wait for a callback.\r\n */\r\nfunction isMobileCordova() {\r\n    return (typeof window !== 'undefined' &&\r\n        // @ts-ignore Setting up an broadly applicable index signature for Window\r\n        // just to deal with this case would probably be a bad idea.\r\n        !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) &&\r\n        /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(getUA()));\r\n}\r\n/**\r\n * Detect Node.js.\r\n *\r\n * @return true if Node.js environment is detected.\r\n */\r\n// Node detection logic from: https://github.com/iliakan/detect-node/\r\nfunction isNode() {\r\n    try {\r\n        return (Object.prototype.toString.call(global.process) === '[object process]');\r\n    }\r\n    catch (e) {\r\n        return false;\r\n    }\r\n}\r\n/**\r\n * Detect Browser Environment\r\n */\r\nfunction isBrowser() {\r\n    return typeof self === 'object' && self.self === self;\r\n}\r\nfunction isBrowserExtension() {\r\n    const runtime = typeof chrome === 'object'\r\n        ? chrome.runtime\r\n        : typeof browser === 'object'\r\n            ? browser.runtime\r\n            : undefined;\r\n    return typeof runtime === 'object' && runtime.id !== undefined;\r\n}\r\n/**\r\n * Detect React Native.\r\n *\r\n * @return true if ReactNative environment is detected.\r\n */\r\nfunction isReactNative() {\r\n    return (typeof navigator === 'object' && navigator['product'] === 'ReactNative');\r\n}\r\n/** Detects Electron apps. */\r\nfunction isElectron() {\r\n    return getUA().indexOf('Electron/') >= 0;\r\n}\r\n/** Detects Internet Explorer. */\r\nfunction isIE() {\r\n    const ua = getUA();\r\n    return ua.indexOf('MSIE ') >= 0 || ua.indexOf('Trident/') >= 0;\r\n}\r\n/** Detects Universal Windows Platform apps. */\r\nfunction isUWP() {\r\n    return getUA().indexOf('MSAppHost/') >= 0;\r\n}\r\n/**\r\n * Detect whether the current SDK build is the Node version.\r\n *\r\n * @return true if it's the Node SDK build.\r\n */\r\nfunction isNodeSdk() {\r\n    return CONSTANTS.NODE_CLIENT === true || CONSTANTS.NODE_ADMIN === true;\r\n}\r\n/** Returns true if we are running in Safari. */\r\nfunction isSafari() {\r\n    return (!isNode() &&\r\n        navigator.userAgent.includes('Safari') &&\r\n        !navigator.userAgent.includes('Chrome'));\r\n}\r\n/**\r\n * This method checks if indexedDB is supported by current browser/service worker context\r\n * @return true if indexedDB is supported by current browser/service worker context\r\n */\r\nfunction isIndexedDBAvailable() {\r\n    return typeof indexedDB === 'object';\r\n}\r\n/**\r\n * This method validates browser/sw context for indexedDB by opening a dummy indexedDB database and reject\r\n * if errors occur during the database open operation.\r\n *\r\n * @throws exception if current browser/sw context can't run idb.open (ex: Safari iframe, Firefox\r\n * private browsing)\r\n */\r\nfunction validateIndexedDBOpenable() {\r\n    return new Promise((resolve, reject) => {\r\n        try {\r\n            let preExist = true;\r\n            const DB_CHECK_NAME = 'validate-browser-context-for-indexeddb-analytics-module';\r\n            const request = self.indexedDB.open(DB_CHECK_NAME);\r\n            request.onsuccess = () => {\r\n                request.result.close();\r\n                // delete database only when it doesn't pre-exist\r\n                if (!preExist) {\r\n                    self.indexedDB.deleteDatabase(DB_CHECK_NAME);\r\n                }\r\n                resolve(true);\r\n            };\r\n            request.onupgradeneeded = () => {\r\n                preExist = false;\r\n            };\r\n            request.onerror = () => {\r\n                var _a;\r\n                reject(((_a = request.error) === null || _a === void 0 ? void 0 : _a.message) || '');\r\n            };\r\n        }\r\n        catch (error) {\r\n            reject(error);\r\n        }\r\n    });\r\n}\r\n/**\r\n *\r\n * This method checks whether cookie is enabled within current browser\r\n * @return true if cookie is enabled within current browser\r\n */\r\nfunction areCookiesEnabled() {\r\n    if (typeof navigator === 'undefined' || !navigator.cookieEnabled) {\r\n        return false;\r\n    }\r\n    return true;\r\n}\r\n/**\r\n * Polyfill for `globalThis` object.\r\n * @returns the `globalThis` object for the given environment.\r\n */\r\nfunction getGlobal() {\r\n    if (typeof self !== 'undefined') {\r\n        return self;\r\n    }\r\n    if (typeof window !== 'undefined') {\r\n        return window;\r\n    }\r\n    if (typeof global !== 'undefined') {\r\n        return global;\r\n    }\r\n    throw new Error('Unable to locate global object.');\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview Standardized Firebase Error.\r\n *\r\n * Usage:\r\n *\r\n *   // Typescript string literals for type-safe codes\r\n *   type Err =\r\n *     'unknown' |\r\n *     'object-not-found'\r\n *     ;\r\n *\r\n *   // Closure enum for type-safe error codes\r\n *   // at-enum {string}\r\n *   var Err = {\r\n *     UNKNOWN: 'unknown',\r\n *     OBJECT_NOT_FOUND: 'object-not-found',\r\n *   }\r\n *\r\n *   let errors: Map<Err, string> = {\r\n *     'generic-error': \"Unknown error\",\r\n *     'file-not-found': \"Could not find file: {$file}\",\r\n *   };\r\n *\r\n *   // Type-safe function - must pass a valid error code as param.\r\n *   let error = new ErrorFactory<Err>('service', 'Service', errors);\r\n *\r\n *   ...\r\n *   throw error.create(Err.GENERIC);\r\n *   ...\r\n *   throw error.create(Err.FILE_NOT_FOUND, {'file': fileName});\r\n *   ...\r\n *   // Service: Could not file file: foo.txt (service/file-not-found).\r\n *\r\n *   catch (e) {\r\n *     assert(e.message === \"Could not find file: foo.txt.\");\r\n *     if (e.code === 'service/file-not-found') {\r\n *       console.log(\"Could not read file: \" + e['file']);\r\n *     }\r\n *   }\r\n */\r\nconst ERROR_NAME = 'FirebaseError';\r\n// Based on code from:\r\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types\r\nclass FirebaseError extends Error {\r\n    constructor(code, message, customData) {\r\n        super(message);\r\n        this.code = code;\r\n        this.customData = customData;\r\n        this.name = ERROR_NAME;\r\n        // Fix For ES5\r\n        // https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work\r\n        Object.setPrototypeOf(this, FirebaseError.prototype);\r\n        // Maintains proper stack trace for where our error was thrown.\r\n        // Only available on V8.\r\n        if (Error.captureStackTrace) {\r\n            Error.captureStackTrace(this, ErrorFactory.prototype.create);\r\n        }\r\n    }\r\n}\r\nclass ErrorFactory {\r\n    constructor(service, serviceName, errors) {\r\n        this.service = service;\r\n        this.serviceName = serviceName;\r\n        this.errors = errors;\r\n    }\r\n    create(code, ...data) {\r\n        const customData = data[0] || {};\r\n        const fullCode = `${this.service}/${code}`;\r\n        const template = this.errors[code];\r\n        const message = template ? replaceTemplate(template, customData) : 'Error';\r\n        // Service Name: Error message (service/code).\r\n        const fullMessage = `${this.serviceName}: ${message} (${fullCode}).`;\r\n        const error = new FirebaseError(fullCode, fullMessage, customData);\r\n        return error;\r\n    }\r\n}\r\nfunction replaceTemplate(template, data) {\r\n    return template.replace(PATTERN, (_, key) => {\r\n        const value = data[key];\r\n        return value != null ? String(value) : `<${key}?>`;\r\n    });\r\n}\r\nconst PATTERN = /\\{\\$([^}]+)}/g;\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Evaluates a JSON string into a javascript object.\r\n *\r\n * @param {string} str A string containing JSON.\r\n * @return {*} The javascript object representing the specified JSON.\r\n */\r\nfunction jsonEval(str) {\r\n    return JSON.parse(str);\r\n}\r\n/**\r\n * Returns JSON representing a javascript object.\r\n * @param {*} data Javascript object to be stringified.\r\n * @return {string} The JSON contents of the object.\r\n */\r\nfunction stringify(data) {\r\n    return JSON.stringify(data);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Decodes a Firebase auth. token into constituent parts.\r\n *\r\n * Notes:\r\n * - May return with invalid / incomplete claims if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n */\r\nconst decode = function (token) {\r\n    let header = {}, claims = {}, data = {}, signature = '';\r\n    try {\r\n        const parts = token.split('.');\r\n        header = jsonEval(base64Decode(parts[0]) || '');\r\n        claims = jsonEval(base64Decode(parts[1]) || '');\r\n        signature = parts[2];\r\n        data = claims['d'] || {};\r\n        delete claims['d'];\r\n    }\r\n    catch (e) { }\r\n    return {\r\n        header,\r\n        claims,\r\n        data,\r\n        signature\r\n    };\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its time-based claims. Will return true if the\r\n * token is within the time window authorized by the 'nbf' (not-before) and 'iat' (issued-at) claims.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n */\r\nconst isValidTimestamp = function (token) {\r\n    const claims = decode(token).claims;\r\n    const now = Math.floor(new Date().getTime() / 1000);\r\n    let validSince = 0, validUntil = 0;\r\n    if (typeof claims === 'object') {\r\n        if (claims.hasOwnProperty('nbf')) {\r\n            validSince = claims['nbf'];\r\n        }\r\n        else if (claims.hasOwnProperty('iat')) {\r\n            validSince = claims['iat'];\r\n        }\r\n        if (claims.hasOwnProperty('exp')) {\r\n            validUntil = claims['exp'];\r\n        }\r\n        else {\r\n            // token will expire after 24h by default\r\n            validUntil = validSince + 86400;\r\n        }\r\n    }\r\n    return (!!now &&\r\n        !!validSince &&\r\n        !!validUntil &&\r\n        now >= validSince &&\r\n        now <= validUntil);\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and returns its issued at time if valid, null otherwise.\r\n *\r\n * Notes:\r\n * - May return null if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n */\r\nconst issuedAtTime = function (token) {\r\n    const claims = decode(token).claims;\r\n    if (typeof claims === 'object' && claims.hasOwnProperty('iat')) {\r\n        return claims['iat'];\r\n    }\r\n    return null;\r\n};\r\n/**\r\n * Decodes a Firebase auth. token and checks the validity of its format. Expects a valid issued-at time.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n */\r\nconst isValidFormat = function (token) {\r\n    const decoded = decode(token), claims = decoded.claims;\r\n    return !!claims && typeof claims === 'object' && claims.hasOwnProperty('iat');\r\n};\r\n/**\r\n * Attempts to peer into an auth token and determine if it's an admin auth token by looking at the claims portion.\r\n *\r\n * Notes:\r\n * - May return a false negative if there's no native base64 decoding support.\r\n * - Doesn't check if the token is actually valid.\r\n */\r\nconst isAdmin = function (token) {\r\n    const claims = decode(token).claims;\r\n    return typeof claims === 'object' && claims['admin'] === true;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction contains(obj, key) {\r\n    return Object.prototype.hasOwnProperty.call(obj, key);\r\n}\r\nfunction safeGet(obj, key) {\r\n    if (Object.prototype.hasOwnProperty.call(obj, key)) {\r\n        return obj[key];\r\n    }\r\n    else {\r\n        return undefined;\r\n    }\r\n}\r\nfunction isEmpty(obj) {\r\n    for (const key in obj) {\r\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\r\n            return false;\r\n        }\r\n    }\r\n    return true;\r\n}\r\nfunction map(obj, fn, contextObj) {\r\n    const res = {};\r\n    for (const key in obj) {\r\n        if (Object.prototype.hasOwnProperty.call(obj, key)) {\r\n            res[key] = fn.call(contextObj, obj[key], key, obj);\r\n        }\r\n    }\r\n    return res;\r\n}\r\n/**\r\n * Deep equal two objects. Support Arrays and Objects.\r\n */\r\nfunction deepEqual(a, b) {\r\n    if (a === b) {\r\n        return true;\r\n    }\r\n    const aKeys = Object.keys(a);\r\n    const bKeys = Object.keys(b);\r\n    for (const k of aKeys) {\r\n        if (!bKeys.includes(k)) {\r\n            return false;\r\n        }\r\n        const aProp = a[k];\r\n        const bProp = b[k];\r\n        if (isObject(aProp) && isObject(bProp)) {\r\n            if (!deepEqual(aProp, bProp)) {\r\n                return false;\r\n            }\r\n        }\r\n        else if (aProp !== bProp) {\r\n            return false;\r\n        }\r\n    }\r\n    for (const k of bKeys) {\r\n        if (!aKeys.includes(k)) {\r\n            return false;\r\n        }\r\n    }\r\n    return true;\r\n}\r\nfunction isObject(thing) {\r\n    return thing !== null && typeof thing === 'object';\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns a querystring-formatted string (e.g. &arg=val&arg2=val2) from a\r\n * params object (e.g. {arg: 'val', arg2: 'val2'})\r\n * Note: You must prepend it with ? when adding it to a URL.\r\n */\r\nfunction querystring(querystringParams) {\r\n    const params = [];\r\n    for (const [key, value] of Object.entries(querystringParams)) {\r\n        if (Array.isArray(value)) {\r\n            value.forEach(arrayVal => {\r\n                params.push(encodeURIComponent(key) + '=' + encodeURIComponent(arrayVal));\r\n            });\r\n        }\r\n        else {\r\n            params.push(encodeURIComponent(key) + '=' + encodeURIComponent(value));\r\n        }\r\n    }\r\n    return params.length ? '&' + params.join('&') : '';\r\n}\r\n/**\r\n * Decodes a querystring (e.g. ?arg=val&arg2=val2) into a params object\r\n * (e.g. {arg: 'val', arg2: 'val2'})\r\n */\r\nfunction querystringDecode(querystring) {\r\n    const obj = {};\r\n    const tokens = querystring.replace(/^\\?/, '').split('&');\r\n    tokens.forEach(token => {\r\n        if (token) {\r\n            const [key, value] = token.split('=');\r\n            obj[decodeURIComponent(key)] = decodeURIComponent(value);\r\n        }\r\n    });\r\n    return obj;\r\n}\r\n/**\r\n * Extract the query string part of a URL, including the leading question mark (if present).\r\n */\r\nfunction extractQuerystring(url) {\r\n    const queryStart = url.indexOf('?');\r\n    if (!queryStart) {\r\n        return '';\r\n    }\r\n    const fragmentStart = url.indexOf('#', queryStart);\r\n    return url.substring(queryStart, fragmentStart > 0 ? fragmentStart : undefined);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @fileoverview SHA-1 cryptographic hash.\r\n * Variable names follow the notation in FIPS PUB 180-3:\r\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\r\n *\r\n * Usage:\r\n *   var sha1 = new sha1();\r\n *   sha1.update(bytes);\r\n *   var hash = sha1.digest();\r\n *\r\n * Performance:\r\n *   Chrome 23:   ~400 Mbit/s\r\n *   Firefox 16:  ~250 Mbit/s\r\n *\r\n */\r\n/**\r\n * SHA-1 cryptographic hash constructor.\r\n *\r\n * The properties declared here are discussed in the above algorithm document.\r\n * @constructor\r\n * @final\r\n * @struct\r\n */\r\nclass Sha1 {\r\n    constructor() {\r\n        /**\r\n         * Holds the previous values of accumulated variables a-e in the compress_\r\n         * function.\r\n         * @private\r\n         */\r\n        this.chain_ = [];\r\n        /**\r\n         * A buffer holding the partially computed hash result.\r\n         * @private\r\n         */\r\n        this.buf_ = [];\r\n        /**\r\n         * An array of 80 bytes, each a part of the message to be hashed.  Referred to\r\n         * as the message schedule in the docs.\r\n         * @private\r\n         */\r\n        this.W_ = [];\r\n        /**\r\n         * Contains data needed to pad messages less than 64 bytes.\r\n         * @private\r\n         */\r\n        this.pad_ = [];\r\n        /**\r\n         * @private {number}\r\n         */\r\n        this.inbuf_ = 0;\r\n        /**\r\n         * @private {number}\r\n         */\r\n        this.total_ = 0;\r\n        this.blockSize = 512 / 8;\r\n        this.pad_[0] = 128;\r\n        for (let i = 1; i < this.blockSize; ++i) {\r\n            this.pad_[i] = 0;\r\n        }\r\n        this.reset();\r\n    }\r\n    reset() {\r\n        this.chain_[0] = 0x67452301;\r\n        this.chain_[1] = 0xefcdab89;\r\n        this.chain_[2] = 0x98badcfe;\r\n        this.chain_[3] = 0x10325476;\r\n        this.chain_[4] = 0xc3d2e1f0;\r\n        this.inbuf_ = 0;\r\n        this.total_ = 0;\r\n    }\r\n    /**\r\n     * Internal compress helper function.\r\n     * @param buf Block to compress.\r\n     * @param offset Offset of the block in the buffer.\r\n     * @private\r\n     */\r\n    compress_(buf, offset) {\r\n        if (!offset) {\r\n            offset = 0;\r\n        }\r\n        const W = this.W_;\r\n        // get 16 big endian words\r\n        if (typeof buf === 'string') {\r\n            for (let i = 0; i < 16; i++) {\r\n                // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS\r\n                // have a bug that turns the post-increment ++ operator into pre-increment\r\n                // during JIT compilation.  We have code that depends heavily on SHA-1 for\r\n                // correctness and which is affected by this bug, so I've removed all uses\r\n                // of post-increment ++ in which the result value is used.  We can revert\r\n                // this change once the Safari bug\r\n                // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and\r\n                // most clients have been updated.\r\n                W[i] =\r\n                    (buf.charCodeAt(offset) << 24) |\r\n                        (buf.charCodeAt(offset + 1) << 16) |\r\n                        (buf.charCodeAt(offset + 2) << 8) |\r\n                        buf.charCodeAt(offset + 3);\r\n                offset += 4;\r\n            }\r\n        }\r\n        else {\r\n            for (let i = 0; i < 16; i++) {\r\n                W[i] =\r\n                    (buf[offset] << 24) |\r\n                        (buf[offset + 1] << 16) |\r\n                        (buf[offset + 2] << 8) |\r\n                        buf[offset + 3];\r\n                offset += 4;\r\n            }\r\n        }\r\n        // expand to 80 words\r\n        for (let i = 16; i < 80; i++) {\r\n            const t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];\r\n            W[i] = ((t << 1) | (t >>> 31)) & 0xffffffff;\r\n        }\r\n        let a = this.chain_[0];\r\n        let b = this.chain_[1];\r\n        let c = this.chain_[2];\r\n        let d = this.chain_[3];\r\n        let e = this.chain_[4];\r\n        let f, k;\r\n        // TODO(user): Try to unroll this loop to speed up the computation.\r\n        for (let i = 0; i < 80; i++) {\r\n            if (i < 40) {\r\n                if (i < 20) {\r\n                    f = d ^ (b & (c ^ d));\r\n                    k = 0x5a827999;\r\n                }\r\n                else {\r\n                    f = b ^ c ^ d;\r\n                    k = 0x6ed9eba1;\r\n                }\r\n            }\r\n            else {\r\n                if (i < 60) {\r\n                    f = (b & c) | (d & (b | c));\r\n                    k = 0x8f1bbcdc;\r\n                }\r\n                else {\r\n                    f = b ^ c ^ d;\r\n                    k = 0xca62c1d6;\r\n                }\r\n            }\r\n            const t = (((a << 5) | (a >>> 27)) + f + e + k + W[i]) & 0xffffffff;\r\n            e = d;\r\n            d = c;\r\n            c = ((b << 30) | (b >>> 2)) & 0xffffffff;\r\n            b = a;\r\n            a = t;\r\n        }\r\n        this.chain_[0] = (this.chain_[0] + a) & 0xffffffff;\r\n        this.chain_[1] = (this.chain_[1] + b) & 0xffffffff;\r\n        this.chain_[2] = (this.chain_[2] + c) & 0xffffffff;\r\n        this.chain_[3] = (this.chain_[3] + d) & 0xffffffff;\r\n        this.chain_[4] = (this.chain_[4] + e) & 0xffffffff;\r\n    }\r\n    update(bytes, length) {\r\n        // TODO(johnlenz): tighten the function signature and remove this check\r\n        if (bytes == null) {\r\n            return;\r\n        }\r\n        if (length === undefined) {\r\n            length = bytes.length;\r\n        }\r\n        const lengthMinusBlock = length - this.blockSize;\r\n        let n = 0;\r\n        // Using local instead of member variables gives ~5% speedup on Firefox 16.\r\n        const buf = this.buf_;\r\n        let inbuf = this.inbuf_;\r\n        // The outer while loop should execute at most twice.\r\n        while (n < length) {\r\n            // When we have no data in the block to top up, we can directly process the\r\n            // input buffer (assuming it contains sufficient data). This gives ~25%\r\n            // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that\r\n            // the data is provided in large chunks (or in multiples of 64 bytes).\r\n            if (inbuf === 0) {\r\n                while (n <= lengthMinusBlock) {\r\n                    this.compress_(bytes, n);\r\n                    n += this.blockSize;\r\n                }\r\n            }\r\n            if (typeof bytes === 'string') {\r\n                while (n < length) {\r\n                    buf[inbuf] = bytes.charCodeAt(n);\r\n                    ++inbuf;\r\n                    ++n;\r\n                    if (inbuf === this.blockSize) {\r\n                        this.compress_(buf);\r\n                        inbuf = 0;\r\n                        // Jump to the outer loop so we use the full-block optimization.\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n            else {\r\n                while (n < length) {\r\n                    buf[inbuf] = bytes[n];\r\n                    ++inbuf;\r\n                    ++n;\r\n                    if (inbuf === this.blockSize) {\r\n                        this.compress_(buf);\r\n                        inbuf = 0;\r\n                        // Jump to the outer loop so we use the full-block optimization.\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        this.inbuf_ = inbuf;\r\n        this.total_ += length;\r\n    }\r\n    /** @override */\r\n    digest() {\r\n        const digest = [];\r\n        let totalBits = this.total_ * 8;\r\n        // Add pad 0x80 0x00*.\r\n        if (this.inbuf_ < 56) {\r\n            this.update(this.pad_, 56 - this.inbuf_);\r\n        }\r\n        else {\r\n            this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));\r\n        }\r\n        // Add # bits.\r\n        for (let i = this.blockSize - 1; i >= 56; i--) {\r\n            this.buf_[i] = totalBits & 255;\r\n            totalBits /= 256; // Don't use bit-shifting here!\r\n        }\r\n        this.compress_(this.buf_);\r\n        let n = 0;\r\n        for (let i = 0; i < 5; i++) {\r\n            for (let j = 24; j >= 0; j -= 8) {\r\n                digest[n] = (this.chain_[i] >> j) & 255;\r\n                ++n;\r\n            }\r\n        }\r\n        return digest;\r\n    }\r\n}\n\n/**\r\n * Helper to make a Subscribe function (just like Promise helps make a\r\n * Thenable).\r\n *\r\n * @param executor Function which can make calls to a single Observer\r\n *     as a proxy.\r\n * @param onNoObservers Callback when count of Observers goes to zero.\r\n */\r\nfunction createSubscribe(executor, onNoObservers) {\r\n    const proxy = new ObserverProxy(executor, onNoObservers);\r\n    return proxy.subscribe.bind(proxy);\r\n}\r\n/**\r\n * Implement fan-out for any number of Observers attached via a subscribe\r\n * function.\r\n */\r\nclass ObserverProxy {\r\n    /**\r\n     * @param executor Function which can make calls to a single Observer\r\n     *     as a proxy.\r\n     * @param onNoObservers Callback when count of Observers goes to zero.\r\n     */\r\n    constructor(executor, onNoObservers) {\r\n        this.observers = [];\r\n        this.unsubscribes = [];\r\n        this.observerCount = 0;\r\n        // Micro-task scheduling by calling task.then().\r\n        this.task = Promise.resolve();\r\n        this.finalized = false;\r\n        this.onNoObservers = onNoObservers;\r\n        // Call the executor asynchronously so subscribers that are called\r\n        // synchronously after the creation of the subscribe function\r\n        // can still receive the very first value generated in the executor.\r\n        this.task\r\n            .then(() => {\r\n            executor(this);\r\n        })\r\n            .catch(e => {\r\n            this.error(e);\r\n        });\r\n    }\r\n    next(value) {\r\n        this.forEachObserver((observer) => {\r\n            observer.next(value);\r\n        });\r\n    }\r\n    error(error) {\r\n        this.forEachObserver((observer) => {\r\n            observer.error(error);\r\n        });\r\n        this.close(error);\r\n    }\r\n    complete() {\r\n        this.forEachObserver((observer) => {\r\n            observer.complete();\r\n        });\r\n        this.close();\r\n    }\r\n    /**\r\n     * Subscribe function that can be used to add an Observer to the fan-out list.\r\n     *\r\n     * - We require that no event is sent to a subscriber sychronously to their\r\n     *   call to subscribe().\r\n     */\r\n    subscribe(nextOrObserver, error, complete) {\r\n        let observer;\r\n        if (nextOrObserver === undefined &&\r\n            error === undefined &&\r\n            complete === undefined) {\r\n            throw new Error('Missing Observer.');\r\n        }\r\n        // Assemble an Observer object when passed as callback functions.\r\n        if (implementsAnyMethods(nextOrObserver, [\r\n            'next',\r\n            'error',\r\n            'complete'\r\n        ])) {\r\n            observer = nextOrObserver;\r\n        }\r\n        else {\r\n            observer = {\r\n                next: nextOrObserver,\r\n                error,\r\n                complete\r\n            };\r\n        }\r\n        if (observer.next === undefined) {\r\n            observer.next = noop;\r\n        }\r\n        if (observer.error === undefined) {\r\n            observer.error = noop;\r\n        }\r\n        if (observer.complete === undefined) {\r\n            observer.complete = noop;\r\n        }\r\n        const unsub = this.unsubscribeOne.bind(this, this.observers.length);\r\n        // Attempt to subscribe to a terminated Observable - we\r\n        // just respond to the Observer with the final error or complete\r\n        // event.\r\n        if (this.finalized) {\r\n            // eslint-disable-next-line @typescript-eslint/no-floating-promises\r\n            this.task.then(() => {\r\n                try {\r\n                    if (this.finalError) {\r\n                        observer.error(this.finalError);\r\n                    }\r\n                    else {\r\n                        observer.complete();\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    // nothing\r\n                }\r\n                return;\r\n            });\r\n        }\r\n        this.observers.push(observer);\r\n        return unsub;\r\n    }\r\n    // Unsubscribe is synchronous - we guarantee that no events are sent to\r\n    // any unsubscribed Observer.\r\n    unsubscribeOne(i) {\r\n        if (this.observers === undefined || this.observers[i] === undefined) {\r\n            return;\r\n        }\r\n        delete this.observers[i];\r\n        this.observerCount -= 1;\r\n        if (this.observerCount === 0 && this.onNoObservers !== undefined) {\r\n            this.onNoObservers(this);\r\n        }\r\n    }\r\n    forEachObserver(fn) {\r\n        if (this.finalized) {\r\n            // Already closed by previous event....just eat the additional values.\r\n            return;\r\n        }\r\n        // Since sendOne calls asynchronously - there is no chance that\r\n        // this.observers will become undefined.\r\n        for (let i = 0; i < this.observers.length; i++) {\r\n            this.sendOne(i, fn);\r\n        }\r\n    }\r\n    // Call the Observer via one of it's callback function. We are careful to\r\n    // confirm that the observe has not been unsubscribed since this asynchronous\r\n    // function had been queued.\r\n    sendOne(i, fn) {\r\n        // Execute the callback asynchronously\r\n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\r\n        this.task.then(() => {\r\n            if (this.observers !== undefined && this.observers[i] !== undefined) {\r\n                try {\r\n                    fn(this.observers[i]);\r\n                }\r\n                catch (e) {\r\n                    // Ignore exceptions raised in Observers or missing methods of an\r\n                    // Observer.\r\n                    // Log error to console. b/31404806\r\n                    if (typeof console !== 'undefined' && console.error) {\r\n                        console.error(e);\r\n                    }\r\n                }\r\n            }\r\n        });\r\n    }\r\n    close(err) {\r\n        if (this.finalized) {\r\n            return;\r\n        }\r\n        this.finalized = true;\r\n        if (err !== undefined) {\r\n            this.finalError = err;\r\n        }\r\n        // Proxy is no longer needed - garbage collect references\r\n        // eslint-disable-next-line @typescript-eslint/no-floating-promises\r\n        this.task.then(() => {\r\n            this.observers = undefined;\r\n            this.onNoObservers = undefined;\r\n        });\r\n    }\r\n}\r\n/** Turn synchronous function into one called asynchronously. */\r\n// eslint-disable-next-line @typescript-eslint/ban-types\r\nfunction async(fn, onError) {\r\n    return (...args) => {\r\n        Promise.resolve(true)\r\n            .then(() => {\r\n            fn(...args);\r\n        })\r\n            .catch((error) => {\r\n            if (onError) {\r\n                onError(error);\r\n            }\r\n        });\r\n    };\r\n}\r\n/**\r\n * Return true if the object passed in implements any of the named methods.\r\n */\r\nfunction implementsAnyMethods(obj, methods) {\r\n    if (typeof obj !== 'object' || obj === null) {\r\n        return false;\r\n    }\r\n    for (const method of methods) {\r\n        if (method in obj && typeof obj[method] === 'function') {\r\n            return true;\r\n        }\r\n    }\r\n    return false;\r\n}\r\nfunction noop() {\r\n    // do nothing\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Check to make sure the appropriate number of arguments are provided for a public function.\r\n * Throws an error if it fails.\r\n *\r\n * @param fnName The function name\r\n * @param minCount The minimum number of arguments to allow for the function call\r\n * @param maxCount The maximum number of argument to allow for the function call\r\n * @param argCount The actual number of arguments provided.\r\n */\r\nconst validateArgCount = function (fnName, minCount, maxCount, argCount) {\r\n    let argError;\r\n    if (argCount < minCount) {\r\n        argError = 'at least ' + minCount;\r\n    }\r\n    else if (argCount > maxCount) {\r\n        argError = maxCount === 0 ? 'none' : 'no more than ' + maxCount;\r\n    }\r\n    if (argError) {\r\n        const error = fnName +\r\n            ' failed: Was called with ' +\r\n            argCount +\r\n            (argCount === 1 ? ' argument.' : ' arguments.') +\r\n            ' Expects ' +\r\n            argError +\r\n            '.';\r\n        throw new Error(error);\r\n    }\r\n};\r\n/**\r\n * Generates a string to prefix an error message about failed argument validation\r\n *\r\n * @param fnName The function name\r\n * @param argName The name of the argument\r\n * @return The prefix to add to the error thrown for validation.\r\n */\r\nfunction errorPrefix(fnName, argName) {\r\n    return `${fnName} failed: ${argName} argument `;\r\n}\r\n/**\r\n * @param fnName\r\n * @param argumentNumber\r\n * @param namespace\r\n * @param optional\r\n */\r\nfunction validateNamespace(fnName, namespace, optional) {\r\n    if (optional && !namespace) {\r\n        return;\r\n    }\r\n    if (typeof namespace !== 'string') {\r\n        //TODO: I should do more validation here. We only allow certain chars in namespaces.\r\n        throw new Error(errorPrefix(fnName, 'namespace') + 'must be a valid firebase namespace.');\r\n    }\r\n}\r\nfunction validateCallback(fnName, argumentName, \r\n// eslint-disable-next-line @typescript-eslint/ban-types\r\ncallback, optional) {\r\n    if (optional && !callback) {\r\n        return;\r\n    }\r\n    if (typeof callback !== 'function') {\r\n        throw new Error(errorPrefix(fnName, argumentName) + 'must be a valid function.');\r\n    }\r\n}\r\nfunction validateContextObject(fnName, argumentName, context, optional) {\r\n    if (optional && !context) {\r\n        return;\r\n    }\r\n    if (typeof context !== 'object' || context === null) {\r\n        throw new Error(errorPrefix(fnName, argumentName) + 'must be a valid context object.');\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Code originally came from goog.crypt.stringToUtf8ByteArray, but for some reason they\r\n// automatically replaced '\\r\\n' with '\\n', and they didn't handle surrogate pairs,\r\n// so it's been modified.\r\n// Note that not all Unicode characters appear as single characters in JavaScript strings.\r\n// fromCharCode returns the UTF-16 encoding of a character - so some Unicode characters\r\n// use 2 characters in Javascript.  All 4-byte UTF-8 characters begin with a first\r\n// character in the range 0xD800 - 0xDBFF (the first character of a so-called surrogate\r\n// pair).\r\n// See http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3\r\n/**\r\n * @param {string} str\r\n * @return {Array}\r\n */\r\nconst stringToByteArray = function (str) {\r\n    const out = [];\r\n    let p = 0;\r\n    for (let i = 0; i < str.length; i++) {\r\n        let c = str.charCodeAt(i);\r\n        // Is this the lead surrogate in a surrogate pair?\r\n        if (c >= 0xd800 && c <= 0xdbff) {\r\n            const high = c - 0xd800; // the high 10 bits.\r\n            i++;\r\n            assert(i < str.length, 'Surrogate pair missing trail surrogate.');\r\n            const low = str.charCodeAt(i) - 0xdc00; // the low 10 bits.\r\n            c = 0x10000 + (high << 10) + low;\r\n        }\r\n        if (c < 128) {\r\n            out[p++] = c;\r\n        }\r\n        else if (c < 2048) {\r\n            out[p++] = (c >> 6) | 192;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else if (c < 65536) {\r\n            out[p++] = (c >> 12) | 224;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n        else {\r\n            out[p++] = (c >> 18) | 240;\r\n            out[p++] = ((c >> 12) & 63) | 128;\r\n            out[p++] = ((c >> 6) & 63) | 128;\r\n            out[p++] = (c & 63) | 128;\r\n        }\r\n    }\r\n    return out;\r\n};\r\n/**\r\n * Calculate length without actually converting; useful for doing cheaper validation.\r\n * @param {string} str\r\n * @return {number}\r\n */\r\nconst stringLength = function (str) {\r\n    let p = 0;\r\n    for (let i = 0; i < str.length; i++) {\r\n        const c = str.charCodeAt(i);\r\n        if (c < 128) {\r\n            p++;\r\n        }\r\n        else if (c < 2048) {\r\n            p += 2;\r\n        }\r\n        else if (c >= 0xd800 && c <= 0xdbff) {\r\n            // Lead surrogate of a surrogate pair.  The pair together will take 4 bytes to represent.\r\n            p += 4;\r\n            i++; // skip trail surrogate.\r\n        }\r\n        else {\r\n            p += 3;\r\n        }\r\n    }\r\n    return p;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The amount of milliseconds to exponentially increase.\r\n */\r\nconst DEFAULT_INTERVAL_MILLIS = 1000;\r\n/**\r\n * The factor to backoff by.\r\n * Should be a number greater than 1.\r\n */\r\nconst DEFAULT_BACKOFF_FACTOR = 2;\r\n/**\r\n * The maximum milliseconds to increase to.\r\n *\r\n * <p>Visible for testing\r\n */\r\nconst MAX_VALUE_MILLIS = 4 * 60 * 60 * 1000; // Four hours, like iOS and Android.\r\n/**\r\n * The percentage of backoff time to randomize by.\r\n * See\r\n * http://go/safe-client-behavior#step-1-determine-the-appropriate-retry-interval-to-handle-spike-traffic\r\n * for context.\r\n *\r\n * <p>Visible for testing\r\n */\r\nconst RANDOM_FACTOR = 0.5;\r\n/**\r\n * Based on the backoff method from\r\n * https://github.com/google/closure-library/blob/master/closure/goog/math/exponentialbackoff.js.\r\n * Extracted here so we don't need to pass metadata and a stateful ExponentialBackoff object around.\r\n */\r\nfunction calculateBackoffMillis(backoffCount, intervalMillis = DEFAULT_INTERVAL_MILLIS, backoffFactor = DEFAULT_BACKOFF_FACTOR) {\r\n    // Calculates an exponentially increasing value.\r\n    // Deviation: calculates value from count and a constant interval, so we only need to save value\r\n    // and count to restore state.\r\n    const currBaseValue = intervalMillis * Math.pow(backoffFactor, backoffCount);\r\n    // A random \"fuzz\" to avoid waves of retries.\r\n    // Deviation: randomFactor is required.\r\n    const randomWait = Math.round(\r\n    // A fraction of the backoff value to add/subtract.\r\n    // Deviation: changes multiplication order to improve readability.\r\n    RANDOM_FACTOR *\r\n        currBaseValue *\r\n        // A random float (rounded to int by Math.round above) in the range [-1, 1]. Determines\r\n        // if we add or subtract.\r\n        (Math.random() - 0.5) *\r\n        2);\r\n    // Limits backoff to max to avoid effectively permanent backoff.\r\n    return Math.min(MAX_VALUE_MILLIS, currBaseValue + randomWait);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Provide English ordinal letters after a number\r\n */\r\nfunction ordinal(i) {\r\n    if (!Number.isFinite(i)) {\r\n        return `${i}`;\r\n    }\r\n    return i + indicator(i);\r\n}\r\nfunction indicator(i) {\r\n    i = Math.abs(i);\r\n    const cent = i % 100;\r\n    if (cent >= 10 && cent <= 20) {\r\n        return 'th';\r\n    }\r\n    const dec = i % 10;\r\n    if (dec === 1) {\r\n        return 'st';\r\n    }\r\n    if (dec === 2) {\r\n        return 'nd';\r\n    }\r\n    if (dec === 3) {\r\n        return 'rd';\r\n    }\r\n    return 'th';\r\n}\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction getModularInstance(service) {\r\n    if (service && service._delegate) {\r\n        return service._delegate;\r\n    }\r\n    else {\r\n        return service;\r\n    }\r\n}\n\nexport { CONSTANTS, Deferred, ErrorFactory, FirebaseError, MAX_VALUE_MILLIS, RANDOM_FACTOR, Sha1, areCookiesEnabled, assert, assertionError, async, base64, base64Decode, base64Encode, base64urlEncodeWithoutPadding, calculateBackoffMillis, contains, createMockUserToken, createSubscribe, decode, deepCopy, deepEqual, deepExtend, errorPrefix, extractQuerystring, getGlobal, getModularInstance, getUA, isAdmin, isBrowser, isBrowserExtension, isElectron, isEmpty, isIE, isIndexedDBAvailable, isMobileCordova, isNode, isNodeSdk, isReactNative, isSafari, isUWP, isValidFormat, isValidTimestamp, issuedAtTime, jsonEval, map, ordinal, querystring, querystringDecode, safeGet, stringLength, stringToByteArray, stringify, validateArgCount, validateCallback, validateContextObject, validateIndexedDBOpenable, validateNamespace };\n//# sourceMappingURL=index.esm2017.js.map\n","import { Deferred } from '@firebase/util';\n\n/**\r\n * Component for service name T, e.g. `auth`, `auth-internal`\r\n */\r\nclass Component {\r\n    /**\r\n     *\r\n     * @param name The public service name, e.g. app, auth, firestore, database\r\n     * @param instanceFactory Service factory responsible for creating the public interface\r\n     * @param type whether the service provided by the component is public or private\r\n     */\r\n    constructor(name, instanceFactory, type) {\r\n        this.name = name;\r\n        this.instanceFactory = instanceFactory;\r\n        this.type = type;\r\n        this.multipleInstances = false;\r\n        /**\r\n         * Properties to be added to the service namespace\r\n         */\r\n        this.serviceProps = {};\r\n        this.instantiationMode = \"LAZY\" /* LAZY */;\r\n        this.onInstanceCreated = null;\r\n    }\r\n    setInstantiationMode(mode) {\r\n        this.instantiationMode = mode;\r\n        return this;\r\n    }\r\n    setMultipleInstances(multipleInstances) {\r\n        this.multipleInstances = multipleInstances;\r\n        return this;\r\n    }\r\n    setServiceProps(props) {\r\n        this.serviceProps = props;\r\n        return this;\r\n    }\r\n    setInstanceCreatedCallback(callback) {\r\n        this.onInstanceCreated = callback;\r\n        return this;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst DEFAULT_ENTRY_NAME = '[DEFAULT]';\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Provider for instance for service name T, e.g. 'auth', 'auth-internal'\r\n * NameServiceMapping[T] is an alias for the type of the instance\r\n */\r\nclass Provider {\r\n    constructor(name, container) {\r\n        this.name = name;\r\n        this.container = container;\r\n        this.component = null;\r\n        this.instances = new Map();\r\n        this.instancesDeferred = new Map();\r\n        this.instancesOptions = new Map();\r\n        this.onInitCallbacks = new Map();\r\n    }\r\n    /**\r\n     * @param identifier A provider can provide mulitple instances of a service\r\n     * if this.component.multipleInstances is true.\r\n     */\r\n    get(identifier) {\r\n        // if multipleInstances is not supported, use the default name\r\n        const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\r\n        if (!this.instancesDeferred.has(normalizedIdentifier)) {\r\n            const deferred = new Deferred();\r\n            this.instancesDeferred.set(normalizedIdentifier, deferred);\r\n            if (this.isInitialized(normalizedIdentifier) ||\r\n                this.shouldAutoInitialize()) {\r\n                // initialize the service if it can be auto-initialized\r\n                try {\r\n                    const instance = this.getOrInitializeService({\r\n                        instanceIdentifier: normalizedIdentifier\r\n                    });\r\n                    if (instance) {\r\n                        deferred.resolve(instance);\r\n                    }\r\n                }\r\n                catch (e) {\r\n                    // when the instance factory throws an exception during get(), it should not cause\r\n                    // a fatal error. We just return the unresolved promise in this case.\r\n                }\r\n            }\r\n        }\r\n        return this.instancesDeferred.get(normalizedIdentifier).promise;\r\n    }\r\n    getImmediate(options) {\r\n        var _a;\r\n        // if multipleInstances is not supported, use the default name\r\n        const normalizedIdentifier = this.normalizeInstanceIdentifier(options === null || options === void 0 ? void 0 : options.identifier);\r\n        const optional = (_a = options === null || options === void 0 ? void 0 : options.optional) !== null && _a !== void 0 ? _a : false;\r\n        if (this.isInitialized(normalizedIdentifier) ||\r\n            this.shouldAutoInitialize()) {\r\n            try {\r\n                return this.getOrInitializeService({\r\n                    instanceIdentifier: normalizedIdentifier\r\n                });\r\n            }\r\n            catch (e) {\r\n                if (optional) {\r\n                    return null;\r\n                }\r\n                else {\r\n                    throw e;\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            // In case a component is not initialized and should/can not be auto-initialized at the moment, return null if the optional flag is set, or throw\r\n            if (optional) {\r\n                return null;\r\n            }\r\n            else {\r\n                throw Error(`Service ${this.name} is not available`);\r\n            }\r\n        }\r\n    }\r\n    getComponent() {\r\n        return this.component;\r\n    }\r\n    setComponent(component) {\r\n        if (component.name !== this.name) {\r\n            throw Error(`Mismatching Component ${component.name} for Provider ${this.name}.`);\r\n        }\r\n        if (this.component) {\r\n            throw Error(`Component for ${this.name} has already been provided`);\r\n        }\r\n        this.component = component;\r\n        // return early without attempting to initialize the component if the component requires explicit initialization (calling `Provider.initialize()`)\r\n        if (!this.shouldAutoInitialize()) {\r\n            return;\r\n        }\r\n        // if the service is eager, initialize the default instance\r\n        if (isComponentEager(component)) {\r\n            try {\r\n                this.getOrInitializeService({ instanceIdentifier: DEFAULT_ENTRY_NAME });\r\n            }\r\n            catch (e) {\r\n                // when the instance factory for an eager Component throws an exception during the eager\r\n                // initialization, it should not cause a fatal error.\r\n                // TODO: Investigate if we need to make it configurable, because some component may want to cause\r\n                // a fatal error in this case?\r\n            }\r\n        }\r\n        // Create service instances for the pending promises and resolve them\r\n        // NOTE: if this.multipleInstances is false, only the default instance will be created\r\n        // and all promises with resolve with it regardless of the identifier.\r\n        for (const [instanceIdentifier, instanceDeferred] of this.instancesDeferred.entries()) {\r\n            const normalizedIdentifier = this.normalizeInstanceIdentifier(instanceIdentifier);\r\n            try {\r\n                // `getOrInitializeService()` should always return a valid instance since a component is guaranteed. use ! to make typescript happy.\r\n                const instance = this.getOrInitializeService({\r\n                    instanceIdentifier: normalizedIdentifier\r\n                });\r\n                instanceDeferred.resolve(instance);\r\n            }\r\n            catch (e) {\r\n                // when the instance factory throws an exception, it should not cause\r\n                // a fatal error. We just leave the promise unresolved.\r\n            }\r\n        }\r\n    }\r\n    clearInstance(identifier = DEFAULT_ENTRY_NAME) {\r\n        this.instancesDeferred.delete(identifier);\r\n        this.instancesOptions.delete(identifier);\r\n        this.instances.delete(identifier);\r\n    }\r\n    // app.delete() will call this method on every provider to delete the services\r\n    // TODO: should we mark the provider as deleted?\r\n    async delete() {\r\n        const services = Array.from(this.instances.values());\r\n        await Promise.all([\r\n            ...services\r\n                .filter(service => 'INTERNAL' in service) // legacy services\r\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                .map(service => service.INTERNAL.delete()),\r\n            ...services\r\n                .filter(service => '_delete' in service) // modularized services\r\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                .map(service => service._delete())\r\n        ]);\r\n    }\r\n    isComponentSet() {\r\n        return this.component != null;\r\n    }\r\n    isInitialized(identifier = DEFAULT_ENTRY_NAME) {\r\n        return this.instances.has(identifier);\r\n    }\r\n    getOptions(identifier = DEFAULT_ENTRY_NAME) {\r\n        return this.instancesOptions.get(identifier) || {};\r\n    }\r\n    initialize(opts = {}) {\r\n        const { options = {} } = opts;\r\n        const normalizedIdentifier = this.normalizeInstanceIdentifier(opts.instanceIdentifier);\r\n        if (this.isInitialized(normalizedIdentifier)) {\r\n            throw Error(`${this.name}(${normalizedIdentifier}) has already been initialized`);\r\n        }\r\n        if (!this.isComponentSet()) {\r\n            throw Error(`Component ${this.name} has not been registered yet`);\r\n        }\r\n        const instance = this.getOrInitializeService({\r\n            instanceIdentifier: normalizedIdentifier,\r\n            options\r\n        });\r\n        // resolve any pending promise waiting for the service instance\r\n        for (const [instanceIdentifier, instanceDeferred] of this.instancesDeferred.entries()) {\r\n            const normalizedDeferredIdentifier = this.normalizeInstanceIdentifier(instanceIdentifier);\r\n            if (normalizedIdentifier === normalizedDeferredIdentifier) {\r\n                instanceDeferred.resolve(instance);\r\n            }\r\n        }\r\n        return instance;\r\n    }\r\n    /**\r\n     *\r\n     * @param callback - a function that will be invoked  after the provider has been initialized by calling provider.initialize().\r\n     * The function is invoked SYNCHRONOUSLY, so it should not execute any longrunning tasks in order to not block the program.\r\n     *\r\n     * @param identifier An optional instance identifier\r\n     * @returns a function to unregister the callback\r\n     */\r\n    onInit(callback, identifier) {\r\n        var _a;\r\n        const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\r\n        const existingCallbacks = (_a = this.onInitCallbacks.get(normalizedIdentifier)) !== null && _a !== void 0 ? _a : new Set();\r\n        existingCallbacks.add(callback);\r\n        this.onInitCallbacks.set(normalizedIdentifier, existingCallbacks);\r\n        const existingInstance = this.instances.get(normalizedIdentifier);\r\n        if (existingInstance) {\r\n            callback(existingInstance, normalizedIdentifier);\r\n        }\r\n        return () => {\r\n            existingCallbacks.delete(callback);\r\n        };\r\n    }\r\n    /**\r\n     * Invoke onInit callbacks synchronously\r\n     * @param instance the service instance`\r\n     */\r\n    invokeOnInitCallbacks(instance, identifier) {\r\n        const callbacks = this.onInitCallbacks.get(identifier);\r\n        if (!callbacks) {\r\n            return;\r\n        }\r\n        for (const callback of callbacks) {\r\n            try {\r\n                callback(instance, identifier);\r\n            }\r\n            catch (_a) {\r\n                // ignore errors in the onInit callback\r\n            }\r\n        }\r\n    }\r\n    getOrInitializeService({ instanceIdentifier, options = {} }) {\r\n        let instance = this.instances.get(instanceIdentifier);\r\n        if (!instance && this.component) {\r\n            instance = this.component.instanceFactory(this.container, {\r\n                instanceIdentifier: normalizeIdentifierForFactory(instanceIdentifier),\r\n                options\r\n            });\r\n            this.instances.set(instanceIdentifier, instance);\r\n            this.instancesOptions.set(instanceIdentifier, options);\r\n            /**\r\n             * Invoke onInit listeners.\r\n             * Note this.component.onInstanceCreated is different, which is used by the component creator,\r\n             * while onInit listeners are registered by consumers of the provider.\r\n             */\r\n            this.invokeOnInitCallbacks(instance, instanceIdentifier);\r\n            /**\r\n             * Order is important\r\n             * onInstanceCreated() should be called after this.instances.set(instanceIdentifier, instance); which\r\n             * makes `isInitialized()` return true.\r\n             */\r\n            if (this.component.onInstanceCreated) {\r\n                try {\r\n                    this.component.onInstanceCreated(this.container, instanceIdentifier, instance);\r\n                }\r\n                catch (_a) {\r\n                    // ignore errors in the onInstanceCreatedCallback\r\n                }\r\n            }\r\n        }\r\n        return instance || null;\r\n    }\r\n    normalizeInstanceIdentifier(identifier = DEFAULT_ENTRY_NAME) {\r\n        if (this.component) {\r\n            return this.component.multipleInstances ? identifier : DEFAULT_ENTRY_NAME;\r\n        }\r\n        else {\r\n            return identifier; // assume multiple instances are supported before the component is provided.\r\n        }\r\n    }\r\n    shouldAutoInitialize() {\r\n        return (!!this.component &&\r\n            this.component.instantiationMode !== \"EXPLICIT\" /* EXPLICIT */);\r\n    }\r\n}\r\n// undefined should be passed to the service factory for the default instance\r\nfunction normalizeIdentifierForFactory(identifier) {\r\n    return identifier === DEFAULT_ENTRY_NAME ? undefined : identifier;\r\n}\r\nfunction isComponentEager(component) {\r\n    return component.instantiationMode === \"EAGER\" /* EAGER */;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * ComponentContainer that provides Providers for service name T, e.g. `auth`, `auth-internal`\r\n */\r\nclass ComponentContainer {\r\n    constructor(name) {\r\n        this.name = name;\r\n        this.providers = new Map();\r\n    }\r\n    /**\r\n     *\r\n     * @param component Component being added\r\n     * @param overwrite When a component with the same name has already been registered,\r\n     * if overwrite is true: overwrite the existing component with the new component and create a new\r\n     * provider with the new component. It can be useful in tests where you want to use different mocks\r\n     * for different tests.\r\n     * if overwrite is false: throw an exception\r\n     */\r\n    addComponent(component) {\r\n        const provider = this.getProvider(component.name);\r\n        if (provider.isComponentSet()) {\r\n            throw new Error(`Component ${component.name} has already been registered with ${this.name}`);\r\n        }\r\n        provider.setComponent(component);\r\n    }\r\n    addOrOverwriteComponent(component) {\r\n        const provider = this.getProvider(component.name);\r\n        if (provider.isComponentSet()) {\r\n            // delete the existing provider from the container, so we can register the new component\r\n            this.providers.delete(component.name);\r\n        }\r\n        this.addComponent(component);\r\n    }\r\n    /**\r\n     * getProvider provides a type safe interface where it can only be called with a field name\r\n     * present in NameServiceMapping interface.\r\n     *\r\n     * Firebase SDKs providing services should extend NameServiceMapping interface to register\r\n     * themselves.\r\n     */\r\n    getProvider(name) {\r\n        if (this.providers.has(name)) {\r\n            return this.providers.get(name);\r\n        }\r\n        // create a Provider for a service that hasn't registered with Firebase\r\n        const provider = new Provider(name, this);\r\n        this.providers.set(name, provider);\r\n        return provider;\r\n    }\r\n    getProviders() {\r\n        return Array.from(this.providers.values());\r\n    }\r\n}\n\nexport { Component, ComponentContainer, Provider };\n//# sourceMappingURL=index.esm2017.js.map\n","/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A container for all of the Logger instances\r\n */\r\nconst instances = [];\r\n/**\r\n * The JS SDK supports 5 log levels and also allows a user the ability to\r\n * silence the logs altogether.\r\n *\r\n * The order is a follows:\r\n * DEBUG < VERBOSE < INFO < WARN < ERROR\r\n *\r\n * All of the log types above the current log level will be captured (i.e. if\r\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\r\n * `VERBOSE` logs will not)\r\n */\r\nvar LogLevel;\r\n(function (LogLevel) {\r\n    LogLevel[LogLevel[\"DEBUG\"] = 0] = \"DEBUG\";\r\n    LogLevel[LogLevel[\"VERBOSE\"] = 1] = \"VERBOSE\";\r\n    LogLevel[LogLevel[\"INFO\"] = 2] = \"INFO\";\r\n    LogLevel[LogLevel[\"WARN\"] = 3] = \"WARN\";\r\n    LogLevel[LogLevel[\"ERROR\"] = 4] = \"ERROR\";\r\n    LogLevel[LogLevel[\"SILENT\"] = 5] = \"SILENT\";\r\n})(LogLevel || (LogLevel = {}));\r\nconst levelStringToEnum = {\r\n    'debug': LogLevel.DEBUG,\r\n    'verbose': LogLevel.VERBOSE,\r\n    'info': LogLevel.INFO,\r\n    'warn': LogLevel.WARN,\r\n    'error': LogLevel.ERROR,\r\n    'silent': LogLevel.SILENT\r\n};\r\n/**\r\n * The default log level\r\n */\r\nconst defaultLogLevel = LogLevel.INFO;\r\n/**\r\n * By default, `console.debug` is not displayed in the developer console (in\r\n * chrome). To avoid forcing users to have to opt-in to these logs twice\r\n * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\r\n * logs to the `console.log` function.\r\n */\r\nconst ConsoleMethod = {\r\n    [LogLevel.DEBUG]: 'log',\r\n    [LogLevel.VERBOSE]: 'log',\r\n    [LogLevel.INFO]: 'info',\r\n    [LogLevel.WARN]: 'warn',\r\n    [LogLevel.ERROR]: 'error'\r\n};\r\n/**\r\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\r\n * messages on to their corresponding console counterparts (if the log method\r\n * is supported by the current log level)\r\n */\r\nconst defaultLogHandler = (instance, logType, ...args) => {\r\n    if (logType < instance.logLevel) {\r\n        return;\r\n    }\r\n    const now = new Date().toISOString();\r\n    const method = ConsoleMethod[logType];\r\n    if (method) {\r\n        console[method](`[${now}]  ${instance.name}:`, ...args);\r\n    }\r\n    else {\r\n        throw new Error(`Attempted to log a message with an invalid logType (value: ${logType})`);\r\n    }\r\n};\r\nclass Logger {\r\n    /**\r\n     * Gives you an instance of a Logger to capture messages according to\r\n     * Firebase's logging scheme.\r\n     *\r\n     * @param name The name that the logs will be associated with\r\n     */\r\n    constructor(name) {\r\n        this.name = name;\r\n        /**\r\n         * The log level of the given Logger instance.\r\n         */\r\n        this._logLevel = defaultLogLevel;\r\n        /**\r\n         * The main (internal) log handler for the Logger instance.\r\n         * Can be set to a new function in internal package code but not by user.\r\n         */\r\n        this._logHandler = defaultLogHandler;\r\n        /**\r\n         * The optional, additional, user-defined log handler for the Logger instance.\r\n         */\r\n        this._userLogHandler = null;\r\n        /**\r\n         * Capture the current instance for later use\r\n         */\r\n        instances.push(this);\r\n    }\r\n    get logLevel() {\r\n        return this._logLevel;\r\n    }\r\n    set logLevel(val) {\r\n        if (!(val in LogLevel)) {\r\n            throw new TypeError(`Invalid value \"${val}\" assigned to \\`logLevel\\``);\r\n        }\r\n        this._logLevel = val;\r\n    }\r\n    // Workaround for setter/getter having to be the same type.\r\n    setLogLevel(val) {\r\n        this._logLevel = typeof val === 'string' ? levelStringToEnum[val] : val;\r\n    }\r\n    get logHandler() {\r\n        return this._logHandler;\r\n    }\r\n    set logHandler(val) {\r\n        if (typeof val !== 'function') {\r\n            throw new TypeError('Value assigned to `logHandler` must be a function');\r\n        }\r\n        this._logHandler = val;\r\n    }\r\n    get userLogHandler() {\r\n        return this._userLogHandler;\r\n    }\r\n    set userLogHandler(val) {\r\n        this._userLogHandler = val;\r\n    }\r\n    /**\r\n     * The functions below are all based on the `console` interface\r\n     */\r\n    debug(...args) {\r\n        this._userLogHandler && this._userLogHandler(this, LogLevel.DEBUG, ...args);\r\n        this._logHandler(this, LogLevel.DEBUG, ...args);\r\n    }\r\n    log(...args) {\r\n        this._userLogHandler &&\r\n            this._userLogHandler(this, LogLevel.VERBOSE, ...args);\r\n        this._logHandler(this, LogLevel.VERBOSE, ...args);\r\n    }\r\n    info(...args) {\r\n        this._userLogHandler && this._userLogHandler(this, LogLevel.INFO, ...args);\r\n        this._logHandler(this, LogLevel.INFO, ...args);\r\n    }\r\n    warn(...args) {\r\n        this._userLogHandler && this._userLogHandler(this, LogLevel.WARN, ...args);\r\n        this._logHandler(this, LogLevel.WARN, ...args);\r\n    }\r\n    error(...args) {\r\n        this._userLogHandler && this._userLogHandler(this, LogLevel.ERROR, ...args);\r\n        this._logHandler(this, LogLevel.ERROR, ...args);\r\n    }\r\n}\r\nfunction setLogLevel(level) {\r\n    instances.forEach(inst => {\r\n        inst.setLogLevel(level);\r\n    });\r\n}\r\nfunction setUserLogHandler(logCallback, options) {\r\n    for (const instance of instances) {\r\n        let customLogLevel = null;\r\n        if (options && options.level) {\r\n            customLogLevel = levelStringToEnum[options.level];\r\n        }\r\n        if (logCallback === null) {\r\n            instance.userLogHandler = null;\r\n        }\r\n        else {\r\n            instance.userLogHandler = (instance, level, ...args) => {\r\n                const message = args\r\n                    .map(arg => {\r\n                    if (arg == null) {\r\n                        return null;\r\n                    }\r\n                    else if (typeof arg === 'string') {\r\n                        return arg;\r\n                    }\r\n                    else if (typeof arg === 'number' || typeof arg === 'boolean') {\r\n                        return arg.toString();\r\n                    }\r\n                    else if (arg instanceof Error) {\r\n                        return arg.message;\r\n                    }\r\n                    else {\r\n                        try {\r\n                            return JSON.stringify(arg);\r\n                        }\r\n                        catch (ignored) {\r\n                            return null;\r\n                        }\r\n                    }\r\n                })\r\n                    .filter(arg => arg)\r\n                    .join(' ');\r\n                if (level >= (customLogLevel !== null && customLogLevel !== void 0 ? customLogLevel : instance.logLevel)) {\r\n                    logCallback({\r\n                        level: LogLevel[level].toLowerCase(),\r\n                        message,\r\n                        args,\r\n                        type: instance.name\r\n                    });\r\n                }\r\n            };\r\n        }\r\n    }\r\n}\n\nexport { LogLevel, Logger, setLogLevel, setUserLogHandler };\n//# sourceMappingURL=index.esm2017.js.map\n","import { Component, ComponentContainer } from '@firebase/component';\nimport { Logger, setUserLogHandler, setLogLevel as setLogLevel$1 } from '@firebase/logger';\nimport { ErrorFactory, deepEqual } from '@firebase/util';\nexport { FirebaseError } from '@firebase/util';\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass PlatformLoggerServiceImpl {\r\n    constructor(container) {\r\n        this.container = container;\r\n    }\r\n    // In initial implementation, this will be called by installations on\r\n    // auth token refresh, and installations will send this string.\r\n    getPlatformInfoString() {\r\n        const providers = this.container.getProviders();\r\n        // Loop through providers and get library/version pairs from any that are\r\n        // version components.\r\n        return providers\r\n            .map(provider => {\r\n            if (isVersionServiceProvider(provider)) {\r\n                const service = provider.getImmediate();\r\n                return `${service.library}/${service.version}`;\r\n            }\r\n            else {\r\n                return null;\r\n            }\r\n        })\r\n            .filter(logString => logString)\r\n            .join(' ');\r\n    }\r\n}\r\n/**\r\n *\r\n * @param provider check if this provider provides a VersionService\r\n *\r\n * NOTE: Using Provider<'app-version'> is a hack to indicate that the provider\r\n * provides VersionService. The provider is not necessarily a 'app-version'\r\n * provider.\r\n */\r\nfunction isVersionServiceProvider(provider) {\r\n    const component = provider.getComponent();\r\n    return (component === null || component === void 0 ? void 0 : component.type) === \"VERSION\" /* VERSION */;\r\n}\n\nconst name$o = \"@firebase/app\";\nconst version$1 = \"0.7.10\";\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst logger = new Logger('@firebase/app');\n\nconst name$n = \"@firebase/app-compat\";\n\nconst name$m = \"@firebase/analytics-compat\";\n\nconst name$l = \"@firebase/analytics\";\n\nconst name$k = \"@firebase/app-check-compat\";\n\nconst name$j = \"@firebase/app-check\";\n\nconst name$i = \"@firebase/auth\";\n\nconst name$h = \"@firebase/auth-compat\";\n\nconst name$g = \"@firebase/database\";\n\nconst name$f = \"@firebase/database-compat\";\n\nconst name$e = \"@firebase/functions\";\n\nconst name$d = \"@firebase/functions-compat\";\n\nconst name$c = \"@firebase/installations\";\n\nconst name$b = \"@firebase/installations-compat\";\n\nconst name$a = \"@firebase/messaging\";\n\nconst name$9 = \"@firebase/messaging-compat\";\n\nconst name$8 = \"@firebase/performance\";\n\nconst name$7 = \"@firebase/performance-compat\";\n\nconst name$6 = \"@firebase/remote-config\";\n\nconst name$5 = \"@firebase/remote-config-compat\";\n\nconst name$4 = \"@firebase/storage\";\n\nconst name$3 = \"@firebase/storage-compat\";\n\nconst name$2 = \"@firebase/firestore\";\n\nconst name$1 = \"@firebase/firestore-compat\";\n\nconst name = \"firebase\";\nconst version = \"9.6.0\";\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The default app name\r\n *\r\n * @internal\r\n */\r\nconst DEFAULT_ENTRY_NAME = '[DEFAULT]';\r\nconst PLATFORM_LOG_STRING = {\r\n    [name$o]: 'fire-core',\r\n    [name$n]: 'fire-core-compat',\r\n    [name$l]: 'fire-analytics',\r\n    [name$m]: 'fire-analytics-compat',\r\n    [name$j]: 'fire-app-check',\r\n    [name$k]: 'fire-app-check-compat',\r\n    [name$i]: 'fire-auth',\r\n    [name$h]: 'fire-auth-compat',\r\n    [name$g]: 'fire-rtdb',\r\n    [name$f]: 'fire-rtdb-compat',\r\n    [name$e]: 'fire-fn',\r\n    [name$d]: 'fire-fn-compat',\r\n    [name$c]: 'fire-iid',\r\n    [name$b]: 'fire-iid-compat',\r\n    [name$a]: 'fire-fcm',\r\n    [name$9]: 'fire-fcm-compat',\r\n    [name$8]: 'fire-perf',\r\n    [name$7]: 'fire-perf-compat',\r\n    [name$6]: 'fire-rc',\r\n    [name$5]: 'fire-rc-compat',\r\n    [name$4]: 'fire-gcs',\r\n    [name$3]: 'fire-gcs-compat',\r\n    [name$2]: 'fire-fst',\r\n    [name$1]: 'fire-fst-compat',\r\n    'fire-js': 'fire-js',\r\n    [name]: 'fire-js-all'\r\n};\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @internal\r\n */\r\nconst _apps = new Map();\r\n/**\r\n * Registered components.\r\n *\r\n * @internal\r\n */\r\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\r\nconst _components = new Map();\r\n/**\r\n * @param component - the component being added to this app's container\r\n *\r\n * @internal\r\n */\r\nfunction _addComponent(app, component) {\r\n    try {\r\n        app.container.addComponent(component);\r\n    }\r\n    catch (e) {\r\n        logger.debug(`Component ${component.name} failed to register with FirebaseApp ${app.name}`, e);\r\n    }\r\n}\r\n/**\r\n *\r\n * @internal\r\n */\r\nfunction _addOrOverwriteComponent(app, component) {\r\n    app.container.addOrOverwriteComponent(component);\r\n}\r\n/**\r\n *\r\n * @param component - the component to register\r\n * @returns whether or not the component is registered successfully\r\n *\r\n * @internal\r\n */\r\nfunction _registerComponent(component) {\r\n    const componentName = component.name;\r\n    if (_components.has(componentName)) {\r\n        logger.debug(`There were multiple attempts to register component ${componentName}.`);\r\n        return false;\r\n    }\r\n    _components.set(componentName, component);\r\n    // add the component to existing app instances\r\n    for (const app of _apps.values()) {\r\n        _addComponent(app, component);\r\n    }\r\n    return true;\r\n}\r\n/**\r\n *\r\n * @param app - FirebaseApp instance\r\n * @param name - service name\r\n *\r\n * @returns the provider for the service with the matching name\r\n *\r\n * @internal\r\n */\r\nfunction _getProvider(app, name) {\r\n    return app.container.getProvider(name);\r\n}\r\n/**\r\n *\r\n * @param app - FirebaseApp instance\r\n * @param name - service name\r\n * @param instanceIdentifier - service instance identifier in case the service supports multiple instances\r\n *\r\n * @internal\r\n */\r\nfunction _removeServiceInstance(app, name, instanceIdentifier = DEFAULT_ENTRY_NAME) {\r\n    _getProvider(app, name).clearInstance(instanceIdentifier);\r\n}\r\n/**\r\n * Test only\r\n *\r\n * @internal\r\n */\r\nfunction _clearComponents() {\r\n    _components.clear();\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst ERRORS = {\r\n    [\"no-app\" /* NO_APP */]: \"No Firebase App '{$appName}' has been created - \" +\r\n        'call Firebase App.initializeApp()',\r\n    [\"bad-app-name\" /* BAD_APP_NAME */]: \"Illegal App name: '{$appName}\",\r\n    [\"duplicate-app\" /* DUPLICATE_APP */]: \"Firebase App named '{$appName}' already exists with different options or config\",\r\n    [\"app-deleted\" /* APP_DELETED */]: \"Firebase App named '{$appName}' already deleted\",\r\n    [\"invalid-app-argument\" /* INVALID_APP_ARGUMENT */]: 'firebase.{$appName}() takes either no argument or a ' +\r\n        'Firebase App instance.',\r\n    [\"invalid-log-argument\" /* INVALID_LOG_ARGUMENT */]: 'First argument to `onLog` must be null or a function.'\r\n};\r\nconst ERROR_FACTORY = new ErrorFactory('app', 'Firebase', ERRORS);\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass FirebaseAppImpl {\r\n    constructor(options, config, container) {\r\n        this._isDeleted = false;\r\n        this._options = Object.assign({}, options);\r\n        this._config = Object.assign({}, config);\r\n        this._name = config.name;\r\n        this._automaticDataCollectionEnabled =\r\n            config.automaticDataCollectionEnabled;\r\n        this._container = container;\r\n        this.container.addComponent(new Component('app', () => this, \"PUBLIC\" /* PUBLIC */));\r\n    }\r\n    get automaticDataCollectionEnabled() {\r\n        this.checkDestroyed();\r\n        return this._automaticDataCollectionEnabled;\r\n    }\r\n    set automaticDataCollectionEnabled(val) {\r\n        this.checkDestroyed();\r\n        this._automaticDataCollectionEnabled = val;\r\n    }\r\n    get name() {\r\n        this.checkDestroyed();\r\n        return this._name;\r\n    }\r\n    get options() {\r\n        this.checkDestroyed();\r\n        return this._options;\r\n    }\r\n    get config() {\r\n        this.checkDestroyed();\r\n        return this._config;\r\n    }\r\n    get container() {\r\n        return this._container;\r\n    }\r\n    get isDeleted() {\r\n        return this._isDeleted;\r\n    }\r\n    set isDeleted(val) {\r\n        this._isDeleted = val;\r\n    }\r\n    /**\r\n     * This function will throw an Error if the App has already been deleted -\r\n     * use before performing API actions on the App.\r\n     */\r\n    checkDestroyed() {\r\n        if (this.isDeleted) {\r\n            throw ERROR_FACTORY.create(\"app-deleted\" /* APP_DELETED */, { appName: this._name });\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The current SDK version.\r\n *\r\n * @public\r\n */\r\nconst SDK_VERSION = version;\r\nfunction initializeApp(options, rawConfig = {}) {\r\n    if (typeof rawConfig !== 'object') {\r\n        const name = rawConfig;\r\n        rawConfig = { name };\r\n    }\r\n    const config = Object.assign({ name: DEFAULT_ENTRY_NAME, automaticDataCollectionEnabled: false }, rawConfig);\r\n    const name = config.name;\r\n    if (typeof name !== 'string' || !name) {\r\n        throw ERROR_FACTORY.create(\"bad-app-name\" /* BAD_APP_NAME */, {\r\n            appName: String(name)\r\n        });\r\n    }\r\n    const existingApp = _apps.get(name);\r\n    if (existingApp) {\r\n        // return the existing app if options and config deep equal the ones in the existing app.\r\n        if (deepEqual(options, existingApp.options) &&\r\n            deepEqual(config, existingApp.config)) {\r\n            return existingApp;\r\n        }\r\n        else {\r\n            throw ERROR_FACTORY.create(\"duplicate-app\" /* DUPLICATE_APP */, { appName: name });\r\n        }\r\n    }\r\n    const container = new ComponentContainer(name);\r\n    for (const component of _components.values()) {\r\n        container.addComponent(component);\r\n    }\r\n    const newApp = new FirebaseAppImpl(options, config, container);\r\n    _apps.set(name, newApp);\r\n    return newApp;\r\n}\r\n/**\r\n * Retrieves a {@link @firebase/app#FirebaseApp} instance.\r\n *\r\n * When called with no arguments, the default app is returned. When an app name\r\n * is provided, the app corresponding to that name is returned.\r\n *\r\n * An exception is thrown if the app being retrieved has not yet been\r\n * initialized.\r\n *\r\n * @example\r\n * ```javascript\r\n * // Return the default app\r\n * const app = getApp();\r\n * ```\r\n *\r\n * @example\r\n * ```javascript\r\n * // Return a named app\r\n * const otherApp = getApp(\"otherApp\");\r\n * ```\r\n *\r\n * @param name - Optional name of the app to return. If no name is\r\n *   provided, the default is `\"[DEFAULT]\"`.\r\n *\r\n * @returns The app corresponding to the provided app name.\r\n *   If no app name is provided, the default app is returned.\r\n *\r\n * @public\r\n */\r\nfunction getApp(name = DEFAULT_ENTRY_NAME) {\r\n    const app = _apps.get(name);\r\n    if (!app) {\r\n        throw ERROR_FACTORY.create(\"no-app\" /* NO_APP */, { appName: name });\r\n    }\r\n    return app;\r\n}\r\n/**\r\n * A (read-only) array of all initialized apps.\r\n * @public\r\n */\r\nfunction getApps() {\r\n    return Array.from(_apps.values());\r\n}\r\n/**\r\n * Renders this app unusable and frees the resources of all associated\r\n * services.\r\n *\r\n * @example\r\n * ```javascript\r\n * deleteApp(app)\r\n *   .then(function() {\r\n *     console.log(\"App deleted successfully\");\r\n *   })\r\n *   .catch(function(error) {\r\n *     console.log(\"Error deleting app:\", error);\r\n *   });\r\n * ```\r\n *\r\n * @public\r\n */\r\nasync function deleteApp(app) {\r\n    const name = app.name;\r\n    if (_apps.has(name)) {\r\n        _apps.delete(name);\r\n        await Promise.all(app.container\r\n            .getProviders()\r\n            .map(provider => provider.delete()));\r\n        app.isDeleted = true;\r\n    }\r\n}\r\n/**\r\n * Registers a library's name and version for platform logging purposes.\r\n * @param library - Name of 1p or 3p library (e.g. firestore, angularfire)\r\n * @param version - Current version of that library.\r\n * @param variant - Bundle variant, e.g., node, rn, etc.\r\n *\r\n * @public\r\n */\r\nfunction registerVersion(libraryKeyOrName, version, variant) {\r\n    var _a;\r\n    // TODO: We can use this check to whitelist strings when/if we set up\r\n    // a good whitelist system.\r\n    let library = (_a = PLATFORM_LOG_STRING[libraryKeyOrName]) !== null && _a !== void 0 ? _a : libraryKeyOrName;\r\n    if (variant) {\r\n        library += `-${variant}`;\r\n    }\r\n    const libraryMismatch = library.match(/\\s|\\//);\r\n    const versionMismatch = version.match(/\\s|\\//);\r\n    if (libraryMismatch || versionMismatch) {\r\n        const warning = [\r\n            `Unable to register library \"${library}\" with version \"${version}\":`\r\n        ];\r\n        if (libraryMismatch) {\r\n            warning.push(`library name \"${library}\" contains illegal characters (whitespace or \"/\")`);\r\n        }\r\n        if (libraryMismatch && versionMismatch) {\r\n            warning.push('and');\r\n        }\r\n        if (versionMismatch) {\r\n            warning.push(`version name \"${version}\" contains illegal characters (whitespace or \"/\")`);\r\n        }\r\n        logger.warn(warning.join(' '));\r\n        return;\r\n    }\r\n    _registerComponent(new Component(`${library}-version`, () => ({ library, version }), \"VERSION\" /* VERSION */));\r\n}\r\n/**\r\n * Sets log handler for all Firebase SDKs.\r\n * @param logCallback - An optional custom log handler that executes user code whenever\r\n * the Firebase SDK makes a logging call.\r\n *\r\n * @public\r\n */\r\nfunction onLog(logCallback, options) {\r\n    if (logCallback !== null && typeof logCallback !== 'function') {\r\n        throw ERROR_FACTORY.create(\"invalid-log-argument\" /* INVALID_LOG_ARGUMENT */);\r\n    }\r\n    setUserLogHandler(logCallback, options);\r\n}\r\n/**\r\n * Sets log level for all Firebase SDKs.\r\n *\r\n * All of the log types above the current log level are captured (i.e. if\r\n * you set the log level to `info`, errors are logged, but `debug` and\r\n * `verbose` logs are not).\r\n *\r\n * @public\r\n */\r\nfunction setLogLevel(logLevel) {\r\n    setLogLevel$1(logLevel);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction registerCoreComponents(variant) {\r\n    _registerComponent(new Component('platform-logger', container => new PlatformLoggerServiceImpl(container), \"PRIVATE\" /* PRIVATE */));\r\n    // Register `app` package.\r\n    registerVersion(name$o, version$1, variant);\r\n    // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation\r\n    registerVersion(name$o, version$1, 'esm2017');\r\n    // Register platform SDK identifier (no version).\r\n    registerVersion('fire-js', '');\r\n}\n\n/**\r\n * Firebase App\r\n *\r\n * @remarks This package coordinates the communication between the different Firebase components\r\n * @packageDocumentation\r\n */\r\nregisterCoreComponents('');\n\nexport { SDK_VERSION, DEFAULT_ENTRY_NAME as _DEFAULT_ENTRY_NAME, _addComponent, _addOrOverwriteComponent, _apps, _clearComponents, _components, _getProvider, _registerComponent, _removeServiceInstance, deleteApp, getApp, getApps, initializeApp, onLog, registerVersion, setLogLevel };\n//# sourceMappingURL=index.esm2017.js.map\n","import { getApp, _getProvider, SDK_VERSION as SDK_VERSION$1, _registerComponent, registerVersion } from '@firebase/app';\nimport { Component } from '@firebase/component';\nimport { stringify, jsonEval, contains, assert, base64, stringToByteArray, Sha1, isNodeSdk, deepCopy, base64Encode, isMobileCordova, stringLength, Deferred, safeGet, isAdmin, isValidFormat, isEmpty, isReactNative, assertionError, map, querystring, errorPrefix, getModularInstance, createMockUserToken } from '@firebase/util';\nimport { Logger, LogLevel } from '@firebase/logger';\n\nconst name = \"@firebase/database\";\nconst version = \"0.12.4\";\n\n/**\r\n * @license\r\n * Copyright 2019 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/** The semver (www.semver.org) version of the SDK. */\r\nlet SDK_VERSION = '';\r\n/**\r\n * SDK_VERSION should be set before any database instance is created\r\n * @internal\r\n */\r\nfunction setSDKVersion(version) {\r\n    SDK_VERSION = version;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Wraps a DOM Storage object and:\r\n * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.\r\n * - prefixes names with \"firebase:\" to avoid collisions with app data.\r\n *\r\n * We automatically (see storage.js) create two such wrappers, one for sessionStorage,\r\n * and one for localStorage.\r\n *\r\n */\r\nclass DOMStorageWrapper {\r\n    /**\r\n     * @param domStorage_ - The underlying storage object (e.g. localStorage or sessionStorage)\r\n     */\r\n    constructor(domStorage_) {\r\n        this.domStorage_ = domStorage_;\r\n        // Use a prefix to avoid collisions with other stuff saved by the app.\r\n        this.prefix_ = 'firebase:';\r\n    }\r\n    /**\r\n     * @param key - The key to save the value under\r\n     * @param value - The value being stored, or null to remove the key.\r\n     */\r\n    set(key, value) {\r\n        if (value == null) {\r\n            this.domStorage_.removeItem(this.prefixedName_(key));\r\n        }\r\n        else {\r\n            this.domStorage_.setItem(this.prefixedName_(key), stringify(value));\r\n        }\r\n    }\r\n    /**\r\n     * @returns The value that was stored under this key, or null\r\n     */\r\n    get(key) {\r\n        const storedVal = this.domStorage_.getItem(this.prefixedName_(key));\r\n        if (storedVal == null) {\r\n            return null;\r\n        }\r\n        else {\r\n            return jsonEval(storedVal);\r\n        }\r\n    }\r\n    remove(key) {\r\n        this.domStorage_.removeItem(this.prefixedName_(key));\r\n    }\r\n    prefixedName_(name) {\r\n        return this.prefix_ + name;\r\n    }\r\n    toString() {\r\n        return this.domStorage_.toString();\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An in-memory storage implementation that matches the API of DOMStorageWrapper\r\n * (TODO: create interface for both to implement).\r\n */\r\nclass MemoryStorage {\r\n    constructor() {\r\n        this.cache_ = {};\r\n        this.isInMemoryStorage = true;\r\n    }\r\n    set(key, value) {\r\n        if (value == null) {\r\n            delete this.cache_[key];\r\n        }\r\n        else {\r\n            this.cache_[key] = value;\r\n        }\r\n    }\r\n    get(key) {\r\n        if (contains(this.cache_, key)) {\r\n            return this.cache_[key];\r\n        }\r\n        return null;\r\n    }\r\n    remove(key) {\r\n        delete this.cache_[key];\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.\r\n * TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change\r\n * to reflect this type\r\n *\r\n * @param domStorageName - Name of the underlying storage object\r\n *   (e.g. 'localStorage' or 'sessionStorage').\r\n * @returns Turning off type information until a common interface is defined.\r\n */\r\nconst createStoragefor = function (domStorageName) {\r\n    try {\r\n        // NOTE: just accessing \"localStorage\" or \"window['localStorage']\" may throw a security exception,\r\n        // so it must be inside the try/catch.\r\n        if (typeof window !== 'undefined' &&\r\n            typeof window[domStorageName] !== 'undefined') {\r\n            // Need to test cache. Just because it's here doesn't mean it works\r\n            const domStorage = window[domStorageName];\r\n            domStorage.setItem('firebase:sentinel', 'cache');\r\n            domStorage.removeItem('firebase:sentinel');\r\n            return new DOMStorageWrapper(domStorage);\r\n        }\r\n    }\r\n    catch (e) { }\r\n    // Failed to create wrapper.  Just return in-memory storage.\r\n    // TODO: log?\r\n    return new MemoryStorage();\r\n};\r\n/** A storage object that lasts across sessions */\r\nconst PersistentStorage = createStoragefor('localStorage');\r\n/** A storage object that only lasts one session */\r\nconst SessionStorage = createStoragefor('sessionStorage');\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst logClient = new Logger('@firebase/database');\r\n/**\r\n * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).\r\n */\r\nconst LUIDGenerator = (function () {\r\n    let id = 1;\r\n    return function () {\r\n        return id++;\r\n    };\r\n})();\r\n/**\r\n * Sha1 hash of the input string\r\n * @param str - The string to hash\r\n * @returns {!string} The resulting hash\r\n */\r\nconst sha1 = function (str) {\r\n    const utf8Bytes = stringToByteArray(str);\r\n    const sha1 = new Sha1();\r\n    sha1.update(utf8Bytes);\r\n    const sha1Bytes = sha1.digest();\r\n    return base64.encodeByteArray(sha1Bytes);\r\n};\r\nconst buildLogMessage_ = function (...varArgs) {\r\n    let message = '';\r\n    for (let i = 0; i < varArgs.length; i++) {\r\n        const arg = varArgs[i];\r\n        if (Array.isArray(arg) ||\r\n            (arg &&\r\n                typeof arg === 'object' &&\r\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                typeof arg.length === 'number')) {\r\n            message += buildLogMessage_.apply(null, arg);\r\n        }\r\n        else if (typeof arg === 'object') {\r\n            message += stringify(arg);\r\n        }\r\n        else {\r\n            message += arg;\r\n        }\r\n        message += ' ';\r\n    }\r\n    return message;\r\n};\r\n/**\r\n * Use this for all debug messages in Firebase.\r\n */\r\nlet logger = null;\r\n/**\r\n * Flag to check for log availability on first log message\r\n */\r\nlet firstLog_ = true;\r\n/**\r\n * The implementation of Firebase.enableLogging (defined here to break dependencies)\r\n * @param logger_ - A flag to turn on logging, or a custom logger\r\n * @param persistent - Whether or not to persist logging settings across refreshes\r\n */\r\nconst enableLogging$1 = function (logger_, persistent) {\r\n    assert(!persistent || logger_ === true || logger_ === false, \"Can't turn on custom loggers persistently.\");\r\n    if (logger_ === true) {\r\n        logClient.logLevel = LogLevel.VERBOSE;\r\n        logger = logClient.log.bind(logClient);\r\n        if (persistent) {\r\n            SessionStorage.set('logging_enabled', true);\r\n        }\r\n    }\r\n    else if (typeof logger_ === 'function') {\r\n        logger = logger_;\r\n    }\r\n    else {\r\n        logger = null;\r\n        SessionStorage.remove('logging_enabled');\r\n    }\r\n};\r\nconst log = function (...varArgs) {\r\n    if (firstLog_ === true) {\r\n        firstLog_ = false;\r\n        if (logger === null && SessionStorage.get('logging_enabled') === true) {\r\n            enableLogging$1(true);\r\n        }\r\n    }\r\n    if (logger) {\r\n        const message = buildLogMessage_.apply(null, varArgs);\r\n        logger(message);\r\n    }\r\n};\r\nconst logWrapper = function (prefix) {\r\n    return function (...varArgs) {\r\n        log(prefix, ...varArgs);\r\n    };\r\n};\r\nconst error = function (...varArgs) {\r\n    const message = 'FIREBASE INTERNAL ERROR: ' + buildLogMessage_(...varArgs);\r\n    logClient.error(message);\r\n};\r\nconst fatal = function (...varArgs) {\r\n    const message = `FIREBASE FATAL ERROR: ${buildLogMessage_(...varArgs)}`;\r\n    logClient.error(message);\r\n    throw new Error(message);\r\n};\r\nconst warn = function (...varArgs) {\r\n    const message = 'FIREBASE WARNING: ' + buildLogMessage_(...varArgs);\r\n    logClient.warn(message);\r\n};\r\n/**\r\n * Logs a warning if the containing page uses https. Called when a call to new Firebase\r\n * does not use https.\r\n */\r\nconst warnIfPageIsSecure = function () {\r\n    // Be very careful accessing browser globals. Who knows what may or may not exist.\r\n    if (typeof window !== 'undefined' &&\r\n        window.location &&\r\n        window.location.protocol &&\r\n        window.location.protocol.indexOf('https:') !== -1) {\r\n        warn('Insecure Firebase access from a secure page. ' +\r\n            'Please use https in calls to new Firebase().');\r\n    }\r\n};\r\n/**\r\n * Returns true if data is NaN, or +/- Infinity.\r\n */\r\nconst isInvalidJSONNumber = function (data) {\r\n    return (typeof data === 'number' &&\r\n        (data !== data || // NaN\r\n            data === Number.POSITIVE_INFINITY ||\r\n            data === Number.NEGATIVE_INFINITY));\r\n};\r\nconst executeWhenDOMReady = function (fn) {\r\n    if (isNodeSdk() || document.readyState === 'complete') {\r\n        fn();\r\n    }\r\n    else {\r\n        // Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which\r\n        // fire before onload), but fall back to onload.\r\n        let called = false;\r\n        const wrappedFn = function () {\r\n            if (!document.body) {\r\n                setTimeout(wrappedFn, Math.floor(10));\r\n                return;\r\n            }\r\n            if (!called) {\r\n                called = true;\r\n                fn();\r\n            }\r\n        };\r\n        if (document.addEventListener) {\r\n            document.addEventListener('DOMContentLoaded', wrappedFn, false);\r\n            // fallback to onload.\r\n            window.addEventListener('load', wrappedFn, false);\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        }\r\n        else if (document.attachEvent) {\r\n            // IE.\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            document.attachEvent('onreadystatechange', () => {\r\n                if (document.readyState === 'complete') {\r\n                    wrappedFn();\r\n                }\r\n            });\r\n            // fallback to onload.\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            window.attachEvent('onload', wrappedFn);\r\n            // jQuery has an extra hack for IE that we could employ (based on\r\n            // http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.\r\n            // I'm hoping we don't need it.\r\n        }\r\n    }\r\n};\r\n/**\r\n * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names\r\n */\r\nconst MIN_NAME = '[MIN_NAME]';\r\n/**\r\n * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names\r\n */\r\nconst MAX_NAME = '[MAX_NAME]';\r\n/**\r\n * Compares valid Firebase key names, plus min and max name\r\n */\r\nconst nameCompare = function (a, b) {\r\n    if (a === b) {\r\n        return 0;\r\n    }\r\n    else if (a === MIN_NAME || b === MAX_NAME) {\r\n        return -1;\r\n    }\r\n    else if (b === MIN_NAME || a === MAX_NAME) {\r\n        return 1;\r\n    }\r\n    else {\r\n        const aAsInt = tryParseInt(a), bAsInt = tryParseInt(b);\r\n        if (aAsInt !== null) {\r\n            if (bAsInt !== null) {\r\n                return aAsInt - bAsInt === 0 ? a.length - b.length : aAsInt - bAsInt;\r\n            }\r\n            else {\r\n                return -1;\r\n            }\r\n        }\r\n        else if (bAsInt !== null) {\r\n            return 1;\r\n        }\r\n        else {\r\n            return a < b ? -1 : 1;\r\n        }\r\n    }\r\n};\r\n/**\r\n * @returns {!number} comparison result.\r\n */\r\nconst stringCompare = function (a, b) {\r\n    if (a === b) {\r\n        return 0;\r\n    }\r\n    else if (a < b) {\r\n        return -1;\r\n    }\r\n    else {\r\n        return 1;\r\n    }\r\n};\r\nconst requireKey = function (key, obj) {\r\n    if (obj && key in obj) {\r\n        return obj[key];\r\n    }\r\n    else {\r\n        throw new Error('Missing required key (' + key + ') in object: ' + stringify(obj));\r\n    }\r\n};\r\nconst ObjectToUniqueKey = function (obj) {\r\n    if (typeof obj !== 'object' || obj === null) {\r\n        return stringify(obj);\r\n    }\r\n    const keys = [];\r\n    // eslint-disable-next-line guard-for-in\r\n    for (const k in obj) {\r\n        keys.push(k);\r\n    }\r\n    // Export as json, but with the keys sorted.\r\n    keys.sort();\r\n    let key = '{';\r\n    for (let i = 0; i < keys.length; i++) {\r\n        if (i !== 0) {\r\n            key += ',';\r\n        }\r\n        key += stringify(keys[i]);\r\n        key += ':';\r\n        key += ObjectToUniqueKey(obj[keys[i]]);\r\n    }\r\n    key += '}';\r\n    return key;\r\n};\r\n/**\r\n * Splits a string into a number of smaller segments of maximum size\r\n * @param str - The string\r\n * @param segsize - The maximum number of chars in the string.\r\n * @returns The string, split into appropriately-sized chunks\r\n */\r\nconst splitStringBySize = function (str, segsize) {\r\n    const len = str.length;\r\n    if (len <= segsize) {\r\n        return [str];\r\n    }\r\n    const dataSegs = [];\r\n    for (let c = 0; c < len; c += segsize) {\r\n        if (c + segsize > len) {\r\n            dataSegs.push(str.substring(c, len));\r\n        }\r\n        else {\r\n            dataSegs.push(str.substring(c, c + segsize));\r\n        }\r\n    }\r\n    return dataSegs;\r\n};\r\n/**\r\n * Apply a function to each (key, value) pair in an object or\r\n * apply a function to each (index, value) pair in an array\r\n * @param obj - The object or array to iterate over\r\n * @param fn - The function to apply\r\n */\r\nfunction each(obj, fn) {\r\n    for (const key in obj) {\r\n        if (obj.hasOwnProperty(key)) {\r\n            fn(key, obj[key]);\r\n        }\r\n    }\r\n}\r\n/**\r\n * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)\r\n * I made one modification at the end and removed the NaN / Infinity\r\n * handling (since it seemed broken [caused an overflow] and we don't need it).  See MJL comments.\r\n * @param v - A double\r\n *\r\n */\r\nconst doubleToIEEE754String = function (v) {\r\n    assert(!isInvalidJSONNumber(v), 'Invalid JSON number'); // MJL\r\n    const ebits = 11, fbits = 52;\r\n    const bias = (1 << (ebits - 1)) - 1;\r\n    let s, e, f, ln, i;\r\n    // Compute sign, exponent, fraction\r\n    // Skip NaN / Infinity handling --MJL.\r\n    if (v === 0) {\r\n        e = 0;\r\n        f = 0;\r\n        s = 1 / v === -Infinity ? 1 : 0;\r\n    }\r\n    else {\r\n        s = v < 0;\r\n        v = Math.abs(v);\r\n        if (v >= Math.pow(2, 1 - bias)) {\r\n            // Normalized\r\n            ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);\r\n            e = ln + bias;\r\n            f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));\r\n        }\r\n        else {\r\n            // Denormalized\r\n            e = 0;\r\n            f = Math.round(v / Math.pow(2, 1 - bias - fbits));\r\n        }\r\n    }\r\n    // Pack sign, exponent, fraction\r\n    const bits = [];\r\n    for (i = fbits; i; i -= 1) {\r\n        bits.push(f % 2 ? 1 : 0);\r\n        f = Math.floor(f / 2);\r\n    }\r\n    for (i = ebits; i; i -= 1) {\r\n        bits.push(e % 2 ? 1 : 0);\r\n        e = Math.floor(e / 2);\r\n    }\r\n    bits.push(s ? 1 : 0);\r\n    bits.reverse();\r\n    const str = bits.join('');\r\n    // Return the data as a hex string. --MJL\r\n    let hexByteString = '';\r\n    for (i = 0; i < 64; i += 8) {\r\n        let hexByte = parseInt(str.substr(i, 8), 2).toString(16);\r\n        if (hexByte.length === 1) {\r\n            hexByte = '0' + hexByte;\r\n        }\r\n        hexByteString = hexByteString + hexByte;\r\n    }\r\n    return hexByteString.toLowerCase();\r\n};\r\n/**\r\n * Used to detect if we're in a Chrome content script (which executes in an\r\n * isolated environment where long-polling doesn't work).\r\n */\r\nconst isChromeExtensionContentScript = function () {\r\n    return !!(typeof window === 'object' &&\r\n        window['chrome'] &&\r\n        window['chrome']['extension'] &&\r\n        !/^chrome/.test(window.location.href));\r\n};\r\n/**\r\n * Used to detect if we're in a Windows 8 Store app.\r\n */\r\nconst isWindowsStoreApp = function () {\r\n    // Check for the presence of a couple WinRT globals\r\n    return typeof Windows === 'object' && typeof Windows.UI === 'object';\r\n};\r\n/**\r\n * Converts a server error code to a Javascript Error\r\n */\r\nfunction errorForServerCode(code, query) {\r\n    let reason = 'Unknown Error';\r\n    if (code === 'too_big') {\r\n        reason =\r\n            'The data requested exceeds the maximum size ' +\r\n                'that can be accessed with a single request.';\r\n    }\r\n    else if (code === 'permission_denied') {\r\n        reason = \"Client doesn't have permission to access the desired data.\";\r\n    }\r\n    else if (code === 'unavailable') {\r\n        reason = 'The service is unavailable';\r\n    }\r\n    const error = new Error(code + ' at ' + query._path.toString() + ': ' + reason);\r\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n    error.code = code.toUpperCase();\r\n    return error;\r\n}\r\n/**\r\n * Used to test for integer-looking strings\r\n */\r\nconst INTEGER_REGEXP_ = new RegExp('^-?(0*)\\\\d{1,10}$');\r\n/**\r\n * For use in keys, the minimum possible 32-bit integer.\r\n */\r\nconst INTEGER_32_MIN = -2147483648;\r\n/**\r\n * For use in kyes, the maximum possible 32-bit integer.\r\n */\r\nconst INTEGER_32_MAX = 2147483647;\r\n/**\r\n * If the string contains a 32-bit integer, return it.  Else return null.\r\n */\r\nconst tryParseInt = function (str) {\r\n    if (INTEGER_REGEXP_.test(str)) {\r\n        const intVal = Number(str);\r\n        if (intVal >= INTEGER_32_MIN && intVal <= INTEGER_32_MAX) {\r\n            return intVal;\r\n        }\r\n    }\r\n    return null;\r\n};\r\n/**\r\n * Helper to run some code but catch any exceptions and re-throw them later.\r\n * Useful for preventing user callbacks from breaking internal code.\r\n *\r\n * Re-throwing the exception from a setTimeout is a little evil, but it's very\r\n * convenient (we don't have to try to figure out when is a safe point to\r\n * re-throw it), and the behavior seems reasonable:\r\n *\r\n * * If you aren't pausing on exceptions, you get an error in the console with\r\n *   the correct stack trace.\r\n * * If you're pausing on all exceptions, the debugger will pause on your\r\n *   exception and then again when we rethrow it.\r\n * * If you're only pausing on uncaught exceptions, the debugger will only pause\r\n *   on us re-throwing it.\r\n *\r\n * @param fn - The code to guard.\r\n */\r\nconst exceptionGuard = function (fn) {\r\n    try {\r\n        fn();\r\n    }\r\n    catch (e) {\r\n        // Re-throw exception when it's safe.\r\n        setTimeout(() => {\r\n            // It used to be that \"throw e\" would result in a good console error with\r\n            // relevant context, but as of Chrome 39, you just get the firebase.js\r\n            // file/line number where we re-throw it, which is useless. So we log\r\n            // e.stack explicitly.\r\n            const stack = e.stack || '';\r\n            warn('Exception was thrown by user callback.', stack);\r\n            throw e;\r\n        }, Math.floor(0));\r\n    }\r\n};\r\n/**\r\n * @returns {boolean} true if we think we're currently being crawled.\r\n */\r\nconst beingCrawled = function () {\r\n    const userAgent = (typeof window === 'object' &&\r\n        window['navigator'] &&\r\n        window['navigator']['userAgent']) ||\r\n        '';\r\n    // For now we whitelist the most popular crawlers.  We should refine this to be the set of crawlers we\r\n    // believe to support JavaScript/AJAX rendering.\r\n    // NOTE: Google Webmaster Tools doesn't really belong, but their \"This is how a visitor to your website\r\n    // would have seen the page\" is flaky if we don't treat it as a crawler.\r\n    return (userAgent.search(/googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i) >= 0);\r\n};\r\n/**\r\n * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.\r\n *\r\n * It is removed with clearTimeout() as normal.\r\n *\r\n * @param fn - Function to run.\r\n * @param time - Milliseconds to wait before running.\r\n * @returns The setTimeout() return value.\r\n */\r\nconst setTimeoutNonBlocking = function (fn, time) {\r\n    const timeout = setTimeout(fn, time);\r\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n    if (typeof timeout === 'object' && timeout['unref']) {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        timeout['unref']();\r\n    }\r\n    return timeout;\r\n};\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Abstraction around AppCheck's token fetching capabilities.\r\n */\r\nclass AppCheckTokenProvider {\r\n    constructor(appName_, appCheckProvider) {\r\n        this.appName_ = appName_;\r\n        this.appCheckProvider = appCheckProvider;\r\n        this.appCheck = appCheckProvider === null || appCheckProvider === void 0 ? void 0 : appCheckProvider.getImmediate({ optional: true });\r\n        if (!this.appCheck) {\r\n            appCheckProvider === null || appCheckProvider === void 0 ? void 0 : appCheckProvider.get().then(appCheck => (this.appCheck = appCheck));\r\n        }\r\n    }\r\n    getToken(forceRefresh) {\r\n        if (!this.appCheck) {\r\n            return new Promise((resolve, reject) => {\r\n                // Support delayed initialization of FirebaseAppCheck. This allows our\r\n                // customers to initialize the RTDB SDK before initializing Firebase\r\n                // AppCheck and ensures that all requests are authenticated if a token\r\n                // becomes available before the timoeout below expires.\r\n                setTimeout(() => {\r\n                    if (this.appCheck) {\r\n                        this.getToken(forceRefresh).then(resolve, reject);\r\n                    }\r\n                    else {\r\n                        resolve(null);\r\n                    }\r\n                }, 0);\r\n            });\r\n        }\r\n        return this.appCheck.getToken(forceRefresh);\r\n    }\r\n    addTokenChangeListener(listener) {\r\n        var _a;\r\n        (_a = this.appCheckProvider) === null || _a === void 0 ? void 0 : _a.get().then(appCheck => appCheck.addTokenListener(listener));\r\n    }\r\n    notifyForInvalidToken() {\r\n        warn(`Provided AppCheck credentials for the app named \"${this.appName_}\" ` +\r\n            'are invalid. This usually indicates your app was not initialized correctly.');\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Abstraction around FirebaseApp's token fetching capabilities.\r\n */\r\nclass FirebaseAuthTokenProvider {\r\n    constructor(appName_, firebaseOptions_, authProvider_) {\r\n        this.appName_ = appName_;\r\n        this.firebaseOptions_ = firebaseOptions_;\r\n        this.authProvider_ = authProvider_;\r\n        this.auth_ = null;\r\n        this.auth_ = authProvider_.getImmediate({ optional: true });\r\n        if (!this.auth_) {\r\n            authProvider_.onInit(auth => (this.auth_ = auth));\r\n        }\r\n    }\r\n    getToken(forceRefresh) {\r\n        if (!this.auth_) {\r\n            return new Promise((resolve, reject) => {\r\n                // Support delayed initialization of FirebaseAuth. This allows our\r\n                // customers to initialize the RTDB SDK before initializing Firebase\r\n                // Auth and ensures that all requests are authenticated if a token\r\n                // becomes available before the timoeout below expires.\r\n                setTimeout(() => {\r\n                    if (this.auth_) {\r\n                        this.getToken(forceRefresh).then(resolve, reject);\r\n                    }\r\n                    else {\r\n                        resolve(null);\r\n                    }\r\n                }, 0);\r\n            });\r\n        }\r\n        return this.auth_.getToken(forceRefresh).catch(error => {\r\n            // TODO: Need to figure out all the cases this is raised and whether\r\n            // this makes sense.\r\n            if (error && error.code === 'auth/token-not-initialized') {\r\n                log('Got auth/token-not-initialized error.  Treating as null token.');\r\n                return null;\r\n            }\r\n            else {\r\n                return Promise.reject(error);\r\n            }\r\n        });\r\n    }\r\n    addTokenChangeListener(listener) {\r\n        // TODO: We might want to wrap the listener and call it with no args to\r\n        // avoid a leaky abstraction, but that makes removing the listener harder.\r\n        if (this.auth_) {\r\n            this.auth_.addAuthTokenListener(listener);\r\n        }\r\n        else {\r\n            this.authProvider_\r\n                .get()\r\n                .then(auth => auth.addAuthTokenListener(listener));\r\n        }\r\n    }\r\n    removeTokenChangeListener(listener) {\r\n        this.authProvider_\r\n            .get()\r\n            .then(auth => auth.removeAuthTokenListener(listener));\r\n    }\r\n    notifyForInvalidToken() {\r\n        let errorMessage = 'Provided authentication credentials for the app named \"' +\r\n            this.appName_ +\r\n            '\" are invalid. This usually indicates your app was not ' +\r\n            'initialized correctly. ';\r\n        if ('credential' in this.firebaseOptions_) {\r\n            errorMessage +=\r\n                'Make sure the \"credential\" property provided to initializeApp() ' +\r\n                    'is authorized to access the specified \"databaseURL\" and is from the correct ' +\r\n                    'project.';\r\n        }\r\n        else if ('serviceAccount' in this.firebaseOptions_) {\r\n            errorMessage +=\r\n                'Make sure the \"serviceAccount\" property provided to initializeApp() ' +\r\n                    'is authorized to access the specified \"databaseURL\" and is from the correct ' +\r\n                    'project.';\r\n        }\r\n        else {\r\n            errorMessage +=\r\n                'Make sure the \"apiKey\" and \"databaseURL\" properties provided to ' +\r\n                    'initializeApp() match the values provided for your app at ' +\r\n                    'https://console.firebase.google.com/.';\r\n        }\r\n        warn(errorMessage);\r\n    }\r\n}\r\n/* AuthTokenProvider that supplies a constant token. Used by Admin SDK or mockUserToken with emulators. */\r\nclass EmulatorTokenProvider {\r\n    constructor(accessToken) {\r\n        this.accessToken = accessToken;\r\n    }\r\n    getToken(forceRefresh) {\r\n        return Promise.resolve({\r\n            accessToken: this.accessToken\r\n        });\r\n    }\r\n    addTokenChangeListener(listener) {\r\n        // Invoke the listener immediately to match the behavior in Firebase Auth\r\n        // (see packages/auth/src/auth.js#L1807)\r\n        listener(this.accessToken);\r\n    }\r\n    removeTokenChangeListener(listener) { }\r\n    notifyForInvalidToken() { }\r\n}\r\n/** A string that is treated as an admin access token by the RTDB emulator. Used by Admin SDK. */\r\nEmulatorTokenProvider.OWNER = 'owner';\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst PROTOCOL_VERSION = '5';\r\nconst VERSION_PARAM = 'v';\r\nconst TRANSPORT_SESSION_PARAM = 's';\r\nconst REFERER_PARAM = 'r';\r\nconst FORGE_REF = 'f';\r\n// Matches console.firebase.google.com, firebase-console-*.corp.google.com and\r\n// firebase.corp.google.com\r\nconst FORGE_DOMAIN_RE = /(console\\.firebase|firebase-console-\\w+\\.corp|firebase\\.corp)\\.google\\.com/;\r\nconst LAST_SESSION_PARAM = 'ls';\r\nconst APPLICATION_ID_PARAM = 'p';\r\nconst APP_CHECK_TOKEN_PARAM = 'ac';\r\nconst WEBSOCKET = 'websocket';\r\nconst LONG_POLLING = 'long_polling';\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A class that holds metadata about a Repo object\r\n */\r\nclass RepoInfo {\r\n    /**\r\n     * @param host - Hostname portion of the url for the repo\r\n     * @param secure - Whether or not this repo is accessed over ssl\r\n     * @param namespace - The namespace represented by the repo\r\n     * @param webSocketOnly - Whether to prefer websockets over all other transports (used by Nest).\r\n     * @param nodeAdmin - Whether this instance uses Admin SDK credentials\r\n     * @param persistenceKey - Override the default session persistence storage key\r\n     */\r\n    constructor(host, secure, namespace, webSocketOnly, nodeAdmin = false, persistenceKey = '', includeNamespaceInQueryParams = false) {\r\n        this.secure = secure;\r\n        this.namespace = namespace;\r\n        this.webSocketOnly = webSocketOnly;\r\n        this.nodeAdmin = nodeAdmin;\r\n        this.persistenceKey = persistenceKey;\r\n        this.includeNamespaceInQueryParams = includeNamespaceInQueryParams;\r\n        this._host = host.toLowerCase();\r\n        this._domain = this._host.substr(this._host.indexOf('.') + 1);\r\n        this.internalHost =\r\n            PersistentStorage.get('host:' + host) || this._host;\r\n    }\r\n    isCacheableHost() {\r\n        return this.internalHost.substr(0, 2) === 's-';\r\n    }\r\n    isCustomHost() {\r\n        return (this._domain !== 'firebaseio.com' &&\r\n            this._domain !== 'firebaseio-demo.com');\r\n    }\r\n    get host() {\r\n        return this._host;\r\n    }\r\n    set host(newHost) {\r\n        if (newHost !== this.internalHost) {\r\n            this.internalHost = newHost;\r\n            if (this.isCacheableHost()) {\r\n                PersistentStorage.set('host:' + this._host, this.internalHost);\r\n            }\r\n        }\r\n    }\r\n    toString() {\r\n        let str = this.toURLString();\r\n        if (this.persistenceKey) {\r\n            str += '<' + this.persistenceKey + '>';\r\n        }\r\n        return str;\r\n    }\r\n    toURLString() {\r\n        const protocol = this.secure ? 'https://' : 'http://';\r\n        const query = this.includeNamespaceInQueryParams\r\n            ? `?ns=${this.namespace}`\r\n            : '';\r\n        return `${protocol}${this.host}/${query}`;\r\n    }\r\n}\r\nfunction repoInfoNeedsQueryParam(repoInfo) {\r\n    return (repoInfo.host !== repoInfo.internalHost ||\r\n        repoInfo.isCustomHost() ||\r\n        repoInfo.includeNamespaceInQueryParams);\r\n}\r\n/**\r\n * Returns the websocket URL for this repo\r\n * @param repoInfo - RepoInfo object\r\n * @param type - of connection\r\n * @param params - list\r\n * @returns The URL for this repo\r\n */\r\nfunction repoInfoConnectionURL(repoInfo, type, params) {\r\n    assert(typeof type === 'string', 'typeof type must == string');\r\n    assert(typeof params === 'object', 'typeof params must == object');\r\n    let connURL;\r\n    if (type === WEBSOCKET) {\r\n        connURL =\r\n            (repoInfo.secure ? 'wss://' : 'ws://') + repoInfo.internalHost + '/.ws?';\r\n    }\r\n    else if (type === LONG_POLLING) {\r\n        connURL =\r\n            (repoInfo.secure ? 'https://' : 'http://') +\r\n                repoInfo.internalHost +\r\n                '/.lp?';\r\n    }\r\n    else {\r\n        throw new Error('Unknown connection type: ' + type);\r\n    }\r\n    if (repoInfoNeedsQueryParam(repoInfo)) {\r\n        params['ns'] = repoInfo.namespace;\r\n    }\r\n    const pairs = [];\r\n    each(params, (key, value) => {\r\n        pairs.push(key + '=' + value);\r\n    });\r\n    return connURL + pairs.join('&');\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Tracks a collection of stats.\r\n */\r\nclass StatsCollection {\r\n    constructor() {\r\n        this.counters_ = {};\r\n    }\r\n    incrementCounter(name, amount = 1) {\r\n        if (!contains(this.counters_, name)) {\r\n            this.counters_[name] = 0;\r\n        }\r\n        this.counters_[name] += amount;\r\n    }\r\n    get() {\r\n        return deepCopy(this.counters_);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst collections = {};\r\nconst reporters = {};\r\nfunction statsManagerGetCollection(repoInfo) {\r\n    const hashString = repoInfo.toString();\r\n    if (!collections[hashString]) {\r\n        collections[hashString] = new StatsCollection();\r\n    }\r\n    return collections[hashString];\r\n}\r\nfunction statsManagerGetOrCreateReporter(repoInfo, creatorFunction) {\r\n    const hashString = repoInfo.toString();\r\n    if (!reporters[hashString]) {\r\n        reporters[hashString] = creatorFunction();\r\n    }\r\n    return reporters[hashString];\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class ensures the packets from the server arrive in order\r\n * This class takes data from the server and ensures it gets passed into the callbacks in order.\r\n */\r\nclass PacketReceiver {\r\n    /**\r\n     * @param onMessage_\r\n     */\r\n    constructor(onMessage_) {\r\n        this.onMessage_ = onMessage_;\r\n        this.pendingResponses = [];\r\n        this.currentResponseNum = 0;\r\n        this.closeAfterResponse = -1;\r\n        this.onClose = null;\r\n    }\r\n    closeAfter(responseNum, callback) {\r\n        this.closeAfterResponse = responseNum;\r\n        this.onClose = callback;\r\n        if (this.closeAfterResponse < this.currentResponseNum) {\r\n            this.onClose();\r\n            this.onClose = null;\r\n        }\r\n    }\r\n    /**\r\n     * Each message from the server comes with a response number, and an array of data. The responseNumber\r\n     * allows us to ensure that we process them in the right order, since we can't be guaranteed that all\r\n     * browsers will respond in the same order as the requests we sent\r\n     */\r\n    handleResponse(requestNum, data) {\r\n        this.pendingResponses[requestNum] = data;\r\n        while (this.pendingResponses[this.currentResponseNum]) {\r\n            const toProcess = this.pendingResponses[this.currentResponseNum];\r\n            delete this.pendingResponses[this.currentResponseNum];\r\n            for (let i = 0; i < toProcess.length; ++i) {\r\n                if (toProcess[i]) {\r\n                    exceptionGuard(() => {\r\n                        this.onMessage_(toProcess[i]);\r\n                    });\r\n                }\r\n            }\r\n            if (this.currentResponseNum === this.closeAfterResponse) {\r\n                if (this.onClose) {\r\n                    this.onClose();\r\n                    this.onClose = null;\r\n                }\r\n                break;\r\n            }\r\n            this.currentResponseNum++;\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// URL query parameters associated with longpolling\r\nconst FIREBASE_LONGPOLL_START_PARAM = 'start';\r\nconst FIREBASE_LONGPOLL_CLOSE_COMMAND = 'close';\r\nconst FIREBASE_LONGPOLL_COMMAND_CB_NAME = 'pLPCommand';\r\nconst FIREBASE_LONGPOLL_DATA_CB_NAME = 'pRTLPCB';\r\nconst FIREBASE_LONGPOLL_ID_PARAM = 'id';\r\nconst FIREBASE_LONGPOLL_PW_PARAM = 'pw';\r\nconst FIREBASE_LONGPOLL_SERIAL_PARAM = 'ser';\r\nconst FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = 'cb';\r\nconst FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = 'seg';\r\nconst FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = 'ts';\r\nconst FIREBASE_LONGPOLL_DATA_PARAM = 'd';\r\nconst FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = 'dframe';\r\n//Data size constants.\r\n//TODO: Perf: the maximum length actually differs from browser to browser.\r\n// We should check what browser we're on and set accordingly.\r\nconst MAX_URL_DATA_SIZE = 1870;\r\nconst SEG_HEADER_SIZE = 30; //ie: &seg=8299234&ts=982389123&d=\r\nconst MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;\r\n/**\r\n * Keepalive period\r\n * send a fresh request at minimum every 25 seconds. Opera has a maximum request\r\n * length of 30 seconds that we can't exceed.\r\n */\r\nconst KEEPALIVE_REQUEST_INTERVAL = 25000;\r\n/**\r\n * How long to wait before aborting a long-polling connection attempt.\r\n */\r\nconst LP_CONNECT_TIMEOUT = 30000;\r\n/**\r\n * This class manages a single long-polling connection.\r\n */\r\nclass BrowserPollConnection {\r\n    /**\r\n     * @param connId An identifier for this connection, used for logging\r\n     * @param repoInfo The info for the endpoint to send data to.\r\n     * @param applicationId The Firebase App ID for this project.\r\n     * @param appCheckToken The AppCheck token for this client.\r\n     * @param authToken The AuthToken to use for this connection.\r\n     * @param transportSessionId Optional transportSessionid if we are\r\n     * reconnecting for an existing transport session\r\n     * @param lastSessionId Optional lastSessionId if the PersistentConnection has\r\n     * already created a connection previously\r\n     */\r\n    constructor(connId, repoInfo, applicationId, appCheckToken, authToken, transportSessionId, lastSessionId) {\r\n        this.connId = connId;\r\n        this.repoInfo = repoInfo;\r\n        this.applicationId = applicationId;\r\n        this.appCheckToken = appCheckToken;\r\n        this.authToken = authToken;\r\n        this.transportSessionId = transportSessionId;\r\n        this.lastSessionId = lastSessionId;\r\n        this.bytesSent = 0;\r\n        this.bytesReceived = 0;\r\n        this.everConnected_ = false;\r\n        this.log_ = logWrapper(connId);\r\n        this.stats_ = statsManagerGetCollection(repoInfo);\r\n        this.urlFn = (params) => {\r\n            // Always add the token if we have one.\r\n            if (this.appCheckToken) {\r\n                params[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;\r\n            }\r\n            return repoInfoConnectionURL(repoInfo, LONG_POLLING, params);\r\n        };\r\n    }\r\n    /**\r\n     * @param onMessage - Callback when messages arrive\r\n     * @param onDisconnect - Callback with connection lost.\r\n     */\r\n    open(onMessage, onDisconnect) {\r\n        this.curSegmentNum = 0;\r\n        this.onDisconnect_ = onDisconnect;\r\n        this.myPacketOrderer = new PacketReceiver(onMessage);\r\n        this.isClosed_ = false;\r\n        this.connectTimeoutTimer_ = setTimeout(() => {\r\n            this.log_('Timed out trying to connect.');\r\n            // Make sure we clear the host cache\r\n            this.onClosed_();\r\n            this.connectTimeoutTimer_ = null;\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        }, Math.floor(LP_CONNECT_TIMEOUT));\r\n        // Ensure we delay the creation of the iframe until the DOM is loaded.\r\n        executeWhenDOMReady(() => {\r\n            if (this.isClosed_) {\r\n                return;\r\n            }\r\n            //Set up a callback that gets triggered once a connection is set up.\r\n            this.scriptTagHolder = new FirebaseIFrameScriptHolder((...args) => {\r\n                const [command, arg1, arg2, arg3, arg4] = args;\r\n                this.incrementIncomingBytes_(args);\r\n                if (!this.scriptTagHolder) {\r\n                    return; // we closed the connection.\r\n                }\r\n                if (this.connectTimeoutTimer_) {\r\n                    clearTimeout(this.connectTimeoutTimer_);\r\n                    this.connectTimeoutTimer_ = null;\r\n                }\r\n                this.everConnected_ = true;\r\n                if (command === FIREBASE_LONGPOLL_START_PARAM) {\r\n                    this.id = arg1;\r\n                    this.password = arg2;\r\n                }\r\n                else if (command === FIREBASE_LONGPOLL_CLOSE_COMMAND) {\r\n                    // Don't clear the host cache. We got a response from the server, so we know it's reachable\r\n                    if (arg1) {\r\n                        // We aren't expecting any more data (other than what the server's already in the process of sending us\r\n                        // through our already open polls), so don't send any more.\r\n                        this.scriptTagHolder.sendNewPolls = false;\r\n                        // arg1 in this case is the last response number sent by the server. We should try to receive\r\n                        // all of the responses up to this one before closing\r\n                        this.myPacketOrderer.closeAfter(arg1, () => {\r\n                            this.onClosed_();\r\n                        });\r\n                    }\r\n                    else {\r\n                        this.onClosed_();\r\n                    }\r\n                }\r\n                else {\r\n                    throw new Error('Unrecognized command received: ' + command);\r\n                }\r\n            }, (...args) => {\r\n                const [pN, data] = args;\r\n                this.incrementIncomingBytes_(args);\r\n                this.myPacketOrderer.handleResponse(pN, data);\r\n            }, () => {\r\n                this.onClosed_();\r\n            }, this.urlFn);\r\n            //Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results\r\n            //from cache.\r\n            const urlParams = {};\r\n            urlParams[FIREBASE_LONGPOLL_START_PARAM] = 't';\r\n            urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(Math.random() * 100000000);\r\n            if (this.scriptTagHolder.uniqueCallbackIdentifier) {\r\n                urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] =\r\n                    this.scriptTagHolder.uniqueCallbackIdentifier;\r\n            }\r\n            urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\r\n            if (this.transportSessionId) {\r\n                urlParams[TRANSPORT_SESSION_PARAM] = this.transportSessionId;\r\n            }\r\n            if (this.lastSessionId) {\r\n                urlParams[LAST_SESSION_PARAM] = this.lastSessionId;\r\n            }\r\n            if (this.applicationId) {\r\n                urlParams[APPLICATION_ID_PARAM] = this.applicationId;\r\n            }\r\n            if (this.appCheckToken) {\r\n                urlParams[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;\r\n            }\r\n            if (typeof location !== 'undefined' &&\r\n                location.hostname &&\r\n                FORGE_DOMAIN_RE.test(location.hostname)) {\r\n                urlParams[REFERER_PARAM] = FORGE_REF;\r\n            }\r\n            const connectURL = this.urlFn(urlParams);\r\n            this.log_('Connecting via long-poll to ' + connectURL);\r\n            this.scriptTagHolder.addTag(connectURL, () => {\r\n                /* do nothing */\r\n            });\r\n        });\r\n    }\r\n    /**\r\n     * Call this when a handshake has completed successfully and we want to consider the connection established\r\n     */\r\n    start() {\r\n        this.scriptTagHolder.startLongPoll(this.id, this.password);\r\n        this.addDisconnectPingFrame(this.id, this.password);\r\n    }\r\n    /**\r\n     * Forces long polling to be considered as a potential transport\r\n     */\r\n    static forceAllow() {\r\n        BrowserPollConnection.forceAllow_ = true;\r\n    }\r\n    /**\r\n     * Forces longpolling to not be considered as a potential transport\r\n     */\r\n    static forceDisallow() {\r\n        BrowserPollConnection.forceDisallow_ = true;\r\n    }\r\n    // Static method, use string literal so it can be accessed in a generic way\r\n    static isAvailable() {\r\n        if (isNodeSdk()) {\r\n            return false;\r\n        }\r\n        else if (BrowserPollConnection.forceAllow_) {\r\n            return true;\r\n        }\r\n        else {\r\n            // NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in\r\n            // the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).\r\n            return (!BrowserPollConnection.forceDisallow_ &&\r\n                typeof document !== 'undefined' &&\r\n                document.createElement != null &&\r\n                !isChromeExtensionContentScript() &&\r\n                !isWindowsStoreApp());\r\n        }\r\n    }\r\n    /**\r\n     * No-op for polling\r\n     */\r\n    markConnectionHealthy() { }\r\n    /**\r\n     * Stops polling and cleans up the iframe\r\n     */\r\n    shutdown_() {\r\n        this.isClosed_ = true;\r\n        if (this.scriptTagHolder) {\r\n            this.scriptTagHolder.close();\r\n            this.scriptTagHolder = null;\r\n        }\r\n        //remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.\r\n        if (this.myDisconnFrame) {\r\n            document.body.removeChild(this.myDisconnFrame);\r\n            this.myDisconnFrame = null;\r\n        }\r\n        if (this.connectTimeoutTimer_) {\r\n            clearTimeout(this.connectTimeoutTimer_);\r\n            this.connectTimeoutTimer_ = null;\r\n        }\r\n    }\r\n    /**\r\n     * Triggered when this transport is closed\r\n     */\r\n    onClosed_() {\r\n        if (!this.isClosed_) {\r\n            this.log_('Longpoll is closing itself');\r\n            this.shutdown_();\r\n            if (this.onDisconnect_) {\r\n                this.onDisconnect_(this.everConnected_);\r\n                this.onDisconnect_ = null;\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server\r\n     * that we've left.\r\n     */\r\n    close() {\r\n        if (!this.isClosed_) {\r\n            this.log_('Longpoll is being closed.');\r\n            this.shutdown_();\r\n        }\r\n    }\r\n    /**\r\n     * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then\r\n     * broken into chunks (since URLs have a small maximum length).\r\n     * @param data - The JSON data to transmit.\r\n     */\r\n    send(data) {\r\n        const dataStr = stringify(data);\r\n        this.bytesSent += dataStr.length;\r\n        this.stats_.incrementCounter('bytes_sent', dataStr.length);\r\n        //first, lets get the base64-encoded data\r\n        const base64data = base64Encode(dataStr);\r\n        //We can only fit a certain amount in each URL, so we need to split this request\r\n        //up into multiple pieces if it doesn't fit in one request.\r\n        const dataSegs = splitStringBySize(base64data, MAX_PAYLOAD_SIZE);\r\n        //Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number\r\n        //of segments so that we can reassemble the packet on the server.\r\n        for (let i = 0; i < dataSegs.length; i++) {\r\n            this.scriptTagHolder.enqueueSegment(this.curSegmentNum, dataSegs.length, dataSegs[i]);\r\n            this.curSegmentNum++;\r\n        }\r\n    }\r\n    /**\r\n     * This is how we notify the server that we're leaving.\r\n     * We aren't able to send requests with DHTML on a window close event, but we can\r\n     * trigger XHR requests in some browsers (everything but Opera basically).\r\n     */\r\n    addDisconnectPingFrame(id, pw) {\r\n        if (isNodeSdk()) {\r\n            return;\r\n        }\r\n        this.myDisconnFrame = document.createElement('iframe');\r\n        const urlParams = {};\r\n        urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = 't';\r\n        urlParams[FIREBASE_LONGPOLL_ID_PARAM] = id;\r\n        urlParams[FIREBASE_LONGPOLL_PW_PARAM] = pw;\r\n        this.myDisconnFrame.src = this.urlFn(urlParams);\r\n        this.myDisconnFrame.style.display = 'none';\r\n        document.body.appendChild(this.myDisconnFrame);\r\n    }\r\n    /**\r\n     * Used to track the bytes received by this client\r\n     */\r\n    incrementIncomingBytes_(args) {\r\n        // TODO: This is an annoying perf hit just to track the number of incoming bytes.  Maybe it should be opt-in.\r\n        const bytesReceived = stringify(args).length;\r\n        this.bytesReceived += bytesReceived;\r\n        this.stats_.incrementCounter('bytes_received', bytesReceived);\r\n    }\r\n}\r\n/*********************************************************************************************\r\n * A wrapper around an iframe that is used as a long-polling script holder.\r\n *********************************************************************************************/\r\nclass FirebaseIFrameScriptHolder {\r\n    /**\r\n     * @param commandCB - The callback to be called when control commands are recevied from the server.\r\n     * @param onMessageCB - The callback to be triggered when responses arrive from the server.\r\n     * @param onDisconnect - The callback to be triggered when this tag holder is closed\r\n     * @param urlFn - A function that provides the URL of the endpoint to send data to.\r\n     */\r\n    constructor(commandCB, onMessageCB, onDisconnect, urlFn) {\r\n        this.onDisconnect = onDisconnect;\r\n        this.urlFn = urlFn;\r\n        //We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause\r\n        //problems in some browsers.\r\n        this.outstandingRequests = new Set();\r\n        //A queue of the pending segments waiting for transmission to the server.\r\n        this.pendingSegs = [];\r\n        //A serial number. We use this for two things:\r\n        // 1) A way to ensure the browser doesn't cache responses to polls\r\n        // 2) A way to make the server aware when long-polls arrive in a different order than we started them. The\r\n        //    server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute\r\n        //    JSONP code in the order it was added to the iframe.\r\n        this.currentSerial = Math.floor(Math.random() * 100000000);\r\n        // This gets set to false when we're \"closing down\" the connection (e.g. we're switching transports but there's still\r\n        // incoming data from the server that we're waiting for).\r\n        this.sendNewPolls = true;\r\n        if (!isNodeSdk()) {\r\n            //Each script holder registers a couple of uniquely named callbacks with the window. These are called from the\r\n            //iframes where we put the long-polling script tags. We have two callbacks:\r\n            //   1) Command Callback - Triggered for control issues, like starting a connection.\r\n            //   2) Message Callback - Triggered when new data arrives.\r\n            this.uniqueCallbackIdentifier = LUIDGenerator();\r\n            window[FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier] = commandCB;\r\n            window[FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] =\r\n                onMessageCB;\r\n            //Create an iframe for us to add script tags to.\r\n            this.myIFrame = FirebaseIFrameScriptHolder.createIFrame_();\r\n            // Set the iframe's contents.\r\n            let script = '';\r\n            // if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient\r\n            // for ie9, but ie8 needs to do it again in the document itself.\r\n            if (this.myIFrame.src &&\r\n                this.myIFrame.src.substr(0, 'javascript:'.length) === 'javascript:') {\r\n                const currentDomain = document.domain;\r\n                script = '<script>document.domain=\"' + currentDomain + '\";</script>';\r\n            }\r\n            const iframeContents = '<html><body>' + script + '</body></html>';\r\n            try {\r\n                this.myIFrame.doc.open();\r\n                this.myIFrame.doc.write(iframeContents);\r\n                this.myIFrame.doc.close();\r\n            }\r\n            catch (e) {\r\n                log('frame writing exception');\r\n                if (e.stack) {\r\n                    log(e.stack);\r\n                }\r\n                log(e);\r\n            }\r\n        }\r\n        else {\r\n            this.commandCB = commandCB;\r\n            this.onMessageCB = onMessageCB;\r\n        }\r\n    }\r\n    /**\r\n     * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can\r\n     * actually use.\r\n     */\r\n    static createIFrame_() {\r\n        const iframe = document.createElement('iframe');\r\n        iframe.style.display = 'none';\r\n        // This is necessary in order to initialize the document inside the iframe\r\n        if (document.body) {\r\n            document.body.appendChild(iframe);\r\n            try {\r\n                // If document.domain has been modified in IE, this will throw an error, and we need to set the\r\n                // domain of the iframe's document manually. We can do this via a javascript: url as the src attribute\r\n                // Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.\r\n                const a = iframe.contentWindow.document;\r\n                if (!a) {\r\n                    // Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.\r\n                    log('No IE domain setting required');\r\n                }\r\n            }\r\n            catch (e) {\r\n                const domain = document.domain;\r\n                iframe.src =\r\n                    \"javascript:void((function(){document.open();document.domain='\" +\r\n                        domain +\r\n                        \"';document.close();})())\";\r\n            }\r\n        }\r\n        else {\r\n            // LongPollConnection attempts to delay initialization until the document is ready, so hopefully this\r\n            // never gets hit.\r\n            throw 'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';\r\n        }\r\n        // Get the document of the iframe in a browser-specific way.\r\n        if (iframe.contentDocument) {\r\n            iframe.doc = iframe.contentDocument; // Firefox, Opera, Safari\r\n        }\r\n        else if (iframe.contentWindow) {\r\n            iframe.doc = iframe.contentWindow.document; // Internet Explorer\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        }\r\n        else if (iframe.document) {\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            iframe.doc = iframe.document; //others?\r\n        }\r\n        return iframe;\r\n    }\r\n    /**\r\n     * Cancel all outstanding queries and remove the frame.\r\n     */\r\n    close() {\r\n        //Mark this iframe as dead, so no new requests are sent.\r\n        this.alive = false;\r\n        if (this.myIFrame) {\r\n            //We have to actually remove all of the html inside this iframe before removing it from the\r\n            //window, or IE will continue loading and executing the script tags we've already added, which\r\n            //can lead to some errors being thrown. Setting innerHTML seems to be the easiest way to do this.\r\n            this.myIFrame.doc.body.innerHTML = '';\r\n            setTimeout(() => {\r\n                if (this.myIFrame !== null) {\r\n                    document.body.removeChild(this.myIFrame);\r\n                    this.myIFrame = null;\r\n                }\r\n            }, Math.floor(0));\r\n        }\r\n        // Protect from being called recursively.\r\n        const onDisconnect = this.onDisconnect;\r\n        if (onDisconnect) {\r\n            this.onDisconnect = null;\r\n            onDisconnect();\r\n        }\r\n    }\r\n    /**\r\n     * Actually start the long-polling session by adding the first script tag(s) to the iframe.\r\n     * @param id - The ID of this connection\r\n     * @param pw - The password for this connection\r\n     */\r\n    startLongPoll(id, pw) {\r\n        this.myID = id;\r\n        this.myPW = pw;\r\n        this.alive = true;\r\n        //send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.\r\n        while (this.newRequest_()) { }\r\n    }\r\n    /**\r\n     * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't\r\n     * too many outstanding requests and we are still alive.\r\n     *\r\n     * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if\r\n     * needed.\r\n     */\r\n    newRequest_() {\r\n        // We keep one outstanding request open all the time to receive data, but if we need to send data\r\n        // (pendingSegs.length > 0) then we create a new request to send the data.  The server will automatically\r\n        // close the old request.\r\n        if (this.alive &&\r\n            this.sendNewPolls &&\r\n            this.outstandingRequests.size < (this.pendingSegs.length > 0 ? 2 : 1)) {\r\n            //construct our url\r\n            this.currentSerial++;\r\n            const urlParams = {};\r\n            urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;\r\n            urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;\r\n            urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;\r\n            let theURL = this.urlFn(urlParams);\r\n            //Now add as much data as we can.\r\n            let curDataString = '';\r\n            let i = 0;\r\n            while (this.pendingSegs.length > 0) {\r\n                //first, lets see if the next segment will fit.\r\n                const nextSeg = this.pendingSegs[0];\r\n                if (nextSeg.d.length +\r\n                    SEG_HEADER_SIZE +\r\n                    curDataString.length <=\r\n                    MAX_URL_DATA_SIZE) {\r\n                    //great, the segment will fit. Lets append it.\r\n                    const theSeg = this.pendingSegs.shift();\r\n                    curDataString =\r\n                        curDataString +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.seg +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.ts +\r\n                            '&' +\r\n                            FIREBASE_LONGPOLL_DATA_PARAM +\r\n                            i +\r\n                            '=' +\r\n                            theSeg.d;\r\n                    i++;\r\n                }\r\n                else {\r\n                    break;\r\n                }\r\n            }\r\n            theURL = theURL + curDataString;\r\n            this.addLongPollTag_(theURL, this.currentSerial);\r\n            return true;\r\n        }\r\n        else {\r\n            return false;\r\n        }\r\n    }\r\n    /**\r\n     * Queue a packet for transmission to the server.\r\n     * @param segnum - A sequential id for this packet segment used for reassembly\r\n     * @param totalsegs - The total number of segments in this packet\r\n     * @param data - The data for this segment.\r\n     */\r\n    enqueueSegment(segnum, totalsegs, data) {\r\n        //add this to the queue of segments to send.\r\n        this.pendingSegs.push({ seg: segnum, ts: totalsegs, d: data });\r\n        //send the data immediately if there isn't already data being transmitted, unless\r\n        //startLongPoll hasn't been called yet.\r\n        if (this.alive) {\r\n            this.newRequest_();\r\n        }\r\n    }\r\n    /**\r\n     * Add a script tag for a regular long-poll request.\r\n     * @param url - The URL of the script tag.\r\n     * @param serial - The serial number of the request.\r\n     */\r\n    addLongPollTag_(url, serial) {\r\n        //remember that we sent this request.\r\n        this.outstandingRequests.add(serial);\r\n        const doNewRequest = () => {\r\n            this.outstandingRequests.delete(serial);\r\n            this.newRequest_();\r\n        };\r\n        // If this request doesn't return on its own accord (by the server sending us some data), we'll\r\n        // create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.\r\n        const keepaliveTimeout = setTimeout(doNewRequest, Math.floor(KEEPALIVE_REQUEST_INTERVAL));\r\n        const readyStateCB = () => {\r\n            // Request completed.  Cancel the keepalive.\r\n            clearTimeout(keepaliveTimeout);\r\n            // Trigger a new request so we can continue receiving data.\r\n            doNewRequest();\r\n        };\r\n        this.addTag(url, readyStateCB);\r\n    }\r\n    /**\r\n     * Add an arbitrary script tag to the iframe.\r\n     * @param url - The URL for the script tag source.\r\n     * @param loadCB - A callback to be triggered once the script has loaded.\r\n     */\r\n    addTag(url, loadCB) {\r\n        if (isNodeSdk()) {\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            this.doNodeLongPoll(url, loadCB);\r\n        }\r\n        else {\r\n            setTimeout(() => {\r\n                try {\r\n                    // if we're already closed, don't add this poll\r\n                    if (!this.sendNewPolls) {\r\n                        return;\r\n                    }\r\n                    const newScript = this.myIFrame.doc.createElement('script');\r\n                    newScript.type = 'text/javascript';\r\n                    newScript.async = true;\r\n                    newScript.src = url;\r\n                    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                    newScript.onload = newScript.onreadystatechange =\r\n                        function () {\r\n                            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                            const rstate = newScript.readyState;\r\n                            if (!rstate || rstate === 'loaded' || rstate === 'complete') {\r\n                                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                                newScript.onload = newScript.onreadystatechange = null;\r\n                                if (newScript.parentNode) {\r\n                                    newScript.parentNode.removeChild(newScript);\r\n                                }\r\n                                loadCB();\r\n                            }\r\n                        };\r\n                    newScript.onerror = () => {\r\n                        log('Long-poll script failed to load: ' + url);\r\n                        this.sendNewPolls = false;\r\n                        this.close();\r\n                    };\r\n                    this.myIFrame.doc.body.appendChild(newScript);\r\n                }\r\n                catch (e) {\r\n                    // TODO: we should make this error visible somehow\r\n                }\r\n            }, Math.floor(1));\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst WEBSOCKET_MAX_FRAME_SIZE = 16384;\r\nconst WEBSOCKET_KEEPALIVE_INTERVAL = 45000;\r\nlet WebSocketImpl = null;\r\nif (typeof MozWebSocket !== 'undefined') {\r\n    WebSocketImpl = MozWebSocket;\r\n}\r\nelse if (typeof WebSocket !== 'undefined') {\r\n    WebSocketImpl = WebSocket;\r\n}\r\n/**\r\n * Create a new websocket connection with the given callbacks.\r\n */\r\nclass WebSocketConnection {\r\n    /**\r\n     * @param connId identifier for this transport\r\n     * @param repoInfo The info for the websocket endpoint.\r\n     * @param applicationId The Firebase App ID for this project.\r\n     * @param appCheckToken The App Check Token for this client.\r\n     * @param authToken The Auth Token for this client.\r\n     * @param transportSessionId Optional transportSessionId if this is connecting\r\n     * to an existing transport session\r\n     * @param lastSessionId Optional lastSessionId if there was a previous\r\n     * connection\r\n     */\r\n    constructor(connId, repoInfo, applicationId, appCheckToken, authToken, transportSessionId, lastSessionId) {\r\n        this.connId = connId;\r\n        this.applicationId = applicationId;\r\n        this.appCheckToken = appCheckToken;\r\n        this.authToken = authToken;\r\n        this.keepaliveTimer = null;\r\n        this.frames = null;\r\n        this.totalFrames = 0;\r\n        this.bytesSent = 0;\r\n        this.bytesReceived = 0;\r\n        this.log_ = logWrapper(this.connId);\r\n        this.stats_ = statsManagerGetCollection(repoInfo);\r\n        this.connURL = WebSocketConnection.connectionURL_(repoInfo, transportSessionId, lastSessionId, appCheckToken);\r\n        this.nodeAdmin = repoInfo.nodeAdmin;\r\n    }\r\n    /**\r\n     * @param repoInfo - The info for the websocket endpoint.\r\n     * @param transportSessionId - Optional transportSessionId if this is connecting to an existing transport\r\n     *                                         session\r\n     * @param lastSessionId - Optional lastSessionId if there was a previous connection\r\n     * @returns connection url\r\n     */\r\n    static connectionURL_(repoInfo, transportSessionId, lastSessionId, appCheckToken) {\r\n        const urlParams = {};\r\n        urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\r\n        if (!isNodeSdk() &&\r\n            typeof location !== 'undefined' &&\r\n            location.hostname &&\r\n            FORGE_DOMAIN_RE.test(location.hostname)) {\r\n            urlParams[REFERER_PARAM] = FORGE_REF;\r\n        }\r\n        if (transportSessionId) {\r\n            urlParams[TRANSPORT_SESSION_PARAM] = transportSessionId;\r\n        }\r\n        if (lastSessionId) {\r\n            urlParams[LAST_SESSION_PARAM] = lastSessionId;\r\n        }\r\n        if (appCheckToken) {\r\n            urlParams[APP_CHECK_TOKEN_PARAM] = appCheckToken;\r\n        }\r\n        return repoInfoConnectionURL(repoInfo, WEBSOCKET, urlParams);\r\n    }\r\n    /**\r\n     * @param onMessage - Callback when messages arrive\r\n     * @param onDisconnect - Callback with connection lost.\r\n     */\r\n    open(onMessage, onDisconnect) {\r\n        this.onDisconnect = onDisconnect;\r\n        this.onMessage = onMessage;\r\n        this.log_('Websocket connecting to ' + this.connURL);\r\n        this.everConnected_ = false;\r\n        // Assume failure until proven otherwise.\r\n        PersistentStorage.set('previous_websocket_failure', true);\r\n        try {\r\n            if (isNodeSdk()) {\r\n                const device = this.nodeAdmin ? 'AdminNode' : 'Node';\r\n                // UA Format: Firebase/<wire_protocol>/<sdk_version>/<platform>/<device>\r\n                const options = {\r\n                    headers: {\r\n                        'User-Agent': `Firebase/${PROTOCOL_VERSION}/${SDK_VERSION}/${process.platform}/${device}`,\r\n                        'X-Firebase-GMPID': this.applicationId || ''\r\n                    }\r\n                };\r\n                // If using Node with admin creds, AppCheck-related checks are unnecessary.\r\n                // Note that we send the credentials here even if they aren't admin credentials, which is\r\n                // not a problem.\r\n                // Note that this header is just used to bypass appcheck, and the token should still be sent\r\n                // through the websocket connection once it is established.\r\n                if (this.authToken) {\r\n                    options.headers['Authorization'] = `Bearer ${this.authToken}`;\r\n                }\r\n                if (this.appCheckToken) {\r\n                    options.headers['X-Firebase-AppCheck'] = this.appCheckToken;\r\n                }\r\n                // Plumb appropriate http_proxy environment variable into faye-websocket if it exists.\r\n                const env = process['env'];\r\n                const proxy = this.connURL.indexOf('wss://') === 0\r\n                    ? env['HTTPS_PROXY'] || env['https_proxy']\r\n                    : env['HTTP_PROXY'] || env['http_proxy'];\r\n                if (proxy) {\r\n                    options['proxy'] = { origin: proxy };\r\n                }\r\n                this.mySock = new WebSocketImpl(this.connURL, [], options);\r\n            }\r\n            else {\r\n                const options = {\r\n                    headers: {\r\n                        'X-Firebase-GMPID': this.applicationId || '',\r\n                        'X-Firebase-AppCheck': this.appCheckToken || ''\r\n                    }\r\n                };\r\n                this.mySock = new WebSocketImpl(this.connURL, [], options);\r\n            }\r\n        }\r\n        catch (e) {\r\n            this.log_('Error instantiating WebSocket.');\r\n            const error = e.message || e.data;\r\n            if (error) {\r\n                this.log_(error);\r\n            }\r\n            this.onClosed_();\r\n            return;\r\n        }\r\n        this.mySock.onopen = () => {\r\n            this.log_('Websocket connected.');\r\n            this.everConnected_ = true;\r\n        };\r\n        this.mySock.onclose = () => {\r\n            this.log_('Websocket connection was disconnected.');\r\n            this.mySock = null;\r\n            this.onClosed_();\r\n        };\r\n        this.mySock.onmessage = m => {\r\n            this.handleIncomingFrame(m);\r\n        };\r\n        this.mySock.onerror = e => {\r\n            this.log_('WebSocket error.  Closing connection.');\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            const error = e.message || e.data;\r\n            if (error) {\r\n                this.log_(error);\r\n            }\r\n            this.onClosed_();\r\n        };\r\n    }\r\n    /**\r\n     * No-op for websockets, we don't need to do anything once the connection is confirmed as open\r\n     */\r\n    start() { }\r\n    static forceDisallow() {\r\n        WebSocketConnection.forceDisallow_ = true;\r\n    }\r\n    static isAvailable() {\r\n        let isOldAndroid = false;\r\n        if (typeof navigator !== 'undefined' && navigator.userAgent) {\r\n            const oldAndroidRegex = /Android ([0-9]{0,}\\.[0-9]{0,})/;\r\n            const oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);\r\n            if (oldAndroidMatch && oldAndroidMatch.length > 1) {\r\n                if (parseFloat(oldAndroidMatch[1]) < 4.4) {\r\n                    isOldAndroid = true;\r\n                }\r\n            }\r\n        }\r\n        return (!isOldAndroid &&\r\n            WebSocketImpl !== null &&\r\n            !WebSocketConnection.forceDisallow_);\r\n    }\r\n    /**\r\n     * Returns true if we previously failed to connect with this transport.\r\n     */\r\n    static previouslyFailed() {\r\n        // If our persistent storage is actually only in-memory storage,\r\n        // we default to assuming that it previously failed to be safe.\r\n        return (PersistentStorage.isInMemoryStorage ||\r\n            PersistentStorage.get('previous_websocket_failure') === true);\r\n    }\r\n    markConnectionHealthy() {\r\n        PersistentStorage.remove('previous_websocket_failure');\r\n    }\r\n    appendFrame_(data) {\r\n        this.frames.push(data);\r\n        if (this.frames.length === this.totalFrames) {\r\n            const fullMess = this.frames.join('');\r\n            this.frames = null;\r\n            const jsonMess = jsonEval(fullMess);\r\n            //handle the message\r\n            this.onMessage(jsonMess);\r\n        }\r\n    }\r\n    /**\r\n     * @param frameCount - The number of frames we are expecting from the server\r\n     */\r\n    handleNewFrameCount_(frameCount) {\r\n        this.totalFrames = frameCount;\r\n        this.frames = [];\r\n    }\r\n    /**\r\n     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1\r\n     * @returns Any remaining data to be process, or null if there is none\r\n     */\r\n    extractFrameCount_(data) {\r\n        assert(this.frames === null, 'We already have a frame buffer');\r\n        // TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced\r\n        // currently.  So allowing larger frame counts (length <= 6).  See https://app.asana.com/0/search/8688598998380/8237608042508\r\n        if (data.length <= 6) {\r\n            const frameCount = Number(data);\r\n            if (!isNaN(frameCount)) {\r\n                this.handleNewFrameCount_(frameCount);\r\n                return null;\r\n            }\r\n        }\r\n        this.handleNewFrameCount_(1);\r\n        return data;\r\n    }\r\n    /**\r\n     * Process a websocket frame that has arrived from the server.\r\n     * @param mess - The frame data\r\n     */\r\n    handleIncomingFrame(mess) {\r\n        if (this.mySock === null) {\r\n            return; // Chrome apparently delivers incoming packets even after we .close() the connection sometimes.\r\n        }\r\n        const data = mess['data'];\r\n        this.bytesReceived += data.length;\r\n        this.stats_.incrementCounter('bytes_received', data.length);\r\n        this.resetKeepAlive();\r\n        if (this.frames !== null) {\r\n            // we're buffering\r\n            this.appendFrame_(data);\r\n        }\r\n        else {\r\n            // try to parse out a frame count, otherwise, assume 1 and process it\r\n            const remainingData = this.extractFrameCount_(data);\r\n            if (remainingData !== null) {\r\n                this.appendFrame_(remainingData);\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Send a message to the server\r\n     * @param data - The JSON object to transmit\r\n     */\r\n    send(data) {\r\n        this.resetKeepAlive();\r\n        const dataStr = stringify(data);\r\n        this.bytesSent += dataStr.length;\r\n        this.stats_.incrementCounter('bytes_sent', dataStr.length);\r\n        //We can only fit a certain amount in each websocket frame, so we need to split this request\r\n        //up into multiple pieces if it doesn't fit in one request.\r\n        const dataSegs = splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);\r\n        //Send the length header\r\n        if (dataSegs.length > 1) {\r\n            this.sendString_(String(dataSegs.length));\r\n        }\r\n        //Send the actual data in segments.\r\n        for (let i = 0; i < dataSegs.length; i++) {\r\n            this.sendString_(dataSegs[i]);\r\n        }\r\n    }\r\n    shutdown_() {\r\n        this.isClosed_ = true;\r\n        if (this.keepaliveTimer) {\r\n            clearInterval(this.keepaliveTimer);\r\n            this.keepaliveTimer = null;\r\n        }\r\n        if (this.mySock) {\r\n            this.mySock.close();\r\n            this.mySock = null;\r\n        }\r\n    }\r\n    onClosed_() {\r\n        if (!this.isClosed_) {\r\n            this.log_('WebSocket is closing itself');\r\n            this.shutdown_();\r\n            // since this is an internal close, trigger the close listener\r\n            if (this.onDisconnect) {\r\n                this.onDisconnect(this.everConnected_);\r\n                this.onDisconnect = null;\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * External-facing close handler.\r\n     * Close the websocket and kill the connection.\r\n     */\r\n    close() {\r\n        if (!this.isClosed_) {\r\n            this.log_('WebSocket is being closed');\r\n            this.shutdown_();\r\n        }\r\n    }\r\n    /**\r\n     * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after\r\n     * the last activity.\r\n     */\r\n    resetKeepAlive() {\r\n        clearInterval(this.keepaliveTimer);\r\n        this.keepaliveTimer = setInterval(() => {\r\n            //If there has been no websocket activity for a while, send a no-op\r\n            if (this.mySock) {\r\n                this.sendString_('0');\r\n            }\r\n            this.resetKeepAlive();\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        }, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL));\r\n    }\r\n    /**\r\n     * Send a string over the websocket.\r\n     *\r\n     * @param str - String to send.\r\n     */\r\n    sendString_(str) {\r\n        // Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()\r\n        // calls for some unknown reason.  We treat these as an error and disconnect.\r\n        // See https://app.asana.com/0/58926111402292/68021340250410\r\n        try {\r\n            this.mySock.send(str);\r\n        }\r\n        catch (e) {\r\n            this.log_('Exception thrown from WebSocket.send():', e.message || e.data, 'Closing connection.');\r\n            setTimeout(this.onClosed_.bind(this), 0);\r\n        }\r\n    }\r\n}\r\n/**\r\n * Number of response before we consider the connection \"healthy.\"\r\n */\r\nWebSocketConnection.responsesRequiredToBeHealthy = 2;\r\n/**\r\n * Time to wait for the connection te become healthy before giving up.\r\n */\r\nWebSocketConnection.healthyTimeout = 30000;\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Currently simplistic, this class manages what transport a Connection should use at various stages of its\r\n * lifecycle.\r\n *\r\n * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if\r\n * they are available.\r\n */\r\nclass TransportManager {\r\n    /**\r\n     * @param repoInfo - Metadata around the namespace we're connecting to\r\n     */\r\n    constructor(repoInfo) {\r\n        this.initTransports_(repoInfo);\r\n    }\r\n    static get ALL_TRANSPORTS() {\r\n        return [BrowserPollConnection, WebSocketConnection];\r\n    }\r\n    initTransports_(repoInfo) {\r\n        const isWebSocketsAvailable = WebSocketConnection && WebSocketConnection['isAvailable']();\r\n        let isSkipPollConnection = isWebSocketsAvailable && !WebSocketConnection.previouslyFailed();\r\n        if (repoInfo.webSocketOnly) {\r\n            if (!isWebSocketsAvailable) {\r\n                warn(\"wss:// URL used, but browser isn't known to support websockets.  Trying anyway.\");\r\n            }\r\n            isSkipPollConnection = true;\r\n        }\r\n        if (isSkipPollConnection) {\r\n            this.transports_ = [WebSocketConnection];\r\n        }\r\n        else {\r\n            const transports = (this.transports_ = []);\r\n            for (const transport of TransportManager.ALL_TRANSPORTS) {\r\n                if (transport && transport['isAvailable']()) {\r\n                    transports.push(transport);\r\n                }\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * @returns The constructor for the initial transport to use\r\n     */\r\n    initialTransport() {\r\n        if (this.transports_.length > 0) {\r\n            return this.transports_[0];\r\n        }\r\n        else {\r\n            throw new Error('No transports available');\r\n        }\r\n    }\r\n    /**\r\n     * @returns The constructor for the next transport, or null\r\n     */\r\n    upgradeTransport() {\r\n        if (this.transports_.length > 1) {\r\n            return this.transports_[1];\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Abort upgrade attempt if it takes longer than 60s.\r\nconst UPGRADE_TIMEOUT = 60000;\r\n// For some transports (WebSockets), we need to \"validate\" the transport by exchanging a few requests and responses.\r\n// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.\r\nconst DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5000;\r\n// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)\r\n// then we may not be able to exchange our ping/pong requests within the healthy timeout.  So if we reach the timeout\r\n// but we've sent/received enough bytes, we don't cancel the connection.\r\nconst BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;\r\nconst BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;\r\nconst MESSAGE_TYPE = 't';\r\nconst MESSAGE_DATA = 'd';\r\nconst CONTROL_SHUTDOWN = 's';\r\nconst CONTROL_RESET = 'r';\r\nconst CONTROL_ERROR = 'e';\r\nconst CONTROL_PONG = 'o';\r\nconst SWITCH_ACK = 'a';\r\nconst END_TRANSMISSION = 'n';\r\nconst PING = 'p';\r\nconst SERVER_HELLO = 'h';\r\n/**\r\n * Creates a new real-time connection to the server using whichever method works\r\n * best in the current browser.\r\n */\r\nclass Connection {\r\n    /**\r\n     * @param id - an id for this connection\r\n     * @param repoInfo_ - the info for the endpoint to connect to\r\n     * @param applicationId_ - the Firebase App ID for this project\r\n     * @param appCheckToken_ - The App Check Token for this device.\r\n     * @param authToken_ - The auth token for this session.\r\n     * @param onMessage_ - the callback to be triggered when a server-push message arrives\r\n     * @param onReady_ - the callback to be triggered when this connection is ready to send messages.\r\n     * @param onDisconnect_ - the callback to be triggered when a connection was lost\r\n     * @param onKill_ - the callback to be triggered when this connection has permanently shut down.\r\n     * @param lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server\r\n     */\r\n    constructor(id, repoInfo_, applicationId_, appCheckToken_, authToken_, onMessage_, onReady_, onDisconnect_, onKill_, lastSessionId) {\r\n        this.id = id;\r\n        this.repoInfo_ = repoInfo_;\r\n        this.applicationId_ = applicationId_;\r\n        this.appCheckToken_ = appCheckToken_;\r\n        this.authToken_ = authToken_;\r\n        this.onMessage_ = onMessage_;\r\n        this.onReady_ = onReady_;\r\n        this.onDisconnect_ = onDisconnect_;\r\n        this.onKill_ = onKill_;\r\n        this.lastSessionId = lastSessionId;\r\n        this.connectionCount = 0;\r\n        this.pendingDataMessages = [];\r\n        this.state_ = 0 /* CONNECTING */;\r\n        this.log_ = logWrapper('c:' + this.id + ':');\r\n        this.transportManager_ = new TransportManager(repoInfo_);\r\n        this.log_('Connection created');\r\n        this.start_();\r\n    }\r\n    /**\r\n     * Starts a connection attempt\r\n     */\r\n    start_() {\r\n        const conn = this.transportManager_.initialTransport();\r\n        this.conn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, null, this.lastSessionId);\r\n        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\r\n        // can consider the transport healthy.\r\n        this.primaryResponsesRequired_ = conn['responsesRequiredToBeHealthy'] || 0;\r\n        const onMessageReceived = this.connReceiver_(this.conn_);\r\n        const onConnectionLost = this.disconnReceiver_(this.conn_);\r\n        this.tx_ = this.conn_;\r\n        this.rx_ = this.conn_;\r\n        this.secondaryConn_ = null;\r\n        this.isHealthy_ = false;\r\n        /*\r\n         * Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.\r\n         * This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.\r\n         * Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should\r\n         * still have the context of your originating frame.\r\n         */\r\n        setTimeout(() => {\r\n            // this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it\r\n            this.conn_ && this.conn_.open(onMessageReceived, onConnectionLost);\r\n        }, Math.floor(0));\r\n        const healthyTimeoutMS = conn['healthyTimeout'] || 0;\r\n        if (healthyTimeoutMS > 0) {\r\n            this.healthyTimeout_ = setTimeoutNonBlocking(() => {\r\n                this.healthyTimeout_ = null;\r\n                if (!this.isHealthy_) {\r\n                    if (this.conn_ &&\r\n                        this.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE) {\r\n                        this.log_('Connection exceeded healthy timeout but has received ' +\r\n                            this.conn_.bytesReceived +\r\n                            ' bytes.  Marking connection healthy.');\r\n                        this.isHealthy_ = true;\r\n                        this.conn_.markConnectionHealthy();\r\n                    }\r\n                    else if (this.conn_ &&\r\n                        this.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE) {\r\n                        this.log_('Connection exceeded healthy timeout but has sent ' +\r\n                            this.conn_.bytesSent +\r\n                            ' bytes.  Leaving connection alive.');\r\n                        // NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to\r\n                        // the server.\r\n                    }\r\n                    else {\r\n                        this.log_('Closing unhealthy connection after timeout.');\r\n                        this.close();\r\n                    }\r\n                }\r\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            }, Math.floor(healthyTimeoutMS));\r\n        }\r\n    }\r\n    nextTransportId_() {\r\n        return 'c:' + this.id + ':' + this.connectionCount++;\r\n    }\r\n    disconnReceiver_(conn) {\r\n        return everConnected => {\r\n            if (conn === this.conn_) {\r\n                this.onConnectionLost_(everConnected);\r\n            }\r\n            else if (conn === this.secondaryConn_) {\r\n                this.log_('Secondary connection lost.');\r\n                this.onSecondaryConnectionLost_();\r\n            }\r\n            else {\r\n                this.log_('closing an old connection');\r\n            }\r\n        };\r\n    }\r\n    connReceiver_(conn) {\r\n        return (message) => {\r\n            if (this.state_ !== 2 /* DISCONNECTED */) {\r\n                if (conn === this.rx_) {\r\n                    this.onPrimaryMessageReceived_(message);\r\n                }\r\n                else if (conn === this.secondaryConn_) {\r\n                    this.onSecondaryMessageReceived_(message);\r\n                }\r\n                else {\r\n                    this.log_('message on old connection');\r\n                }\r\n            }\r\n        };\r\n    }\r\n    /**\r\n     * @param dataMsg - An arbitrary data message to be sent to the server\r\n     */\r\n    sendRequest(dataMsg) {\r\n        // wrap in a data message envelope and send it on\r\n        const msg = { t: 'd', d: dataMsg };\r\n        this.sendData_(msg);\r\n    }\r\n    tryCleanupConnection() {\r\n        if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {\r\n            this.log_('cleaning up and promoting a connection: ' + this.secondaryConn_.connId);\r\n            this.conn_ = this.secondaryConn_;\r\n            this.secondaryConn_ = null;\r\n            // the server will shutdown the old connection\r\n        }\r\n    }\r\n    onSecondaryControl_(controlData) {\r\n        if (MESSAGE_TYPE in controlData) {\r\n            const cmd = controlData[MESSAGE_TYPE];\r\n            if (cmd === SWITCH_ACK) {\r\n                this.upgradeIfSecondaryHealthy_();\r\n            }\r\n            else if (cmd === CONTROL_RESET) {\r\n                // Most likely the session wasn't valid. Abandon the switch attempt\r\n                this.log_('Got a reset on secondary, closing it');\r\n                this.secondaryConn_.close();\r\n                // If we were already using this connection for something, than we need to fully close\r\n                if (this.tx_ === this.secondaryConn_ ||\r\n                    this.rx_ === this.secondaryConn_) {\r\n                    this.close();\r\n                }\r\n            }\r\n            else if (cmd === CONTROL_PONG) {\r\n                this.log_('got pong on secondary.');\r\n                this.secondaryResponsesRequired_--;\r\n                this.upgradeIfSecondaryHealthy_();\r\n            }\r\n        }\r\n    }\r\n    onSecondaryMessageReceived_(parsedData) {\r\n        const layer = requireKey('t', parsedData);\r\n        const data = requireKey('d', parsedData);\r\n        if (layer === 'c') {\r\n            this.onSecondaryControl_(data);\r\n        }\r\n        else if (layer === 'd') {\r\n            // got a data message, but we're still second connection. Need to buffer it up\r\n            this.pendingDataMessages.push(data);\r\n        }\r\n        else {\r\n            throw new Error('Unknown protocol layer: ' + layer);\r\n        }\r\n    }\r\n    upgradeIfSecondaryHealthy_() {\r\n        if (this.secondaryResponsesRequired_ <= 0) {\r\n            this.log_('Secondary connection is healthy.');\r\n            this.isHealthy_ = true;\r\n            this.secondaryConn_.markConnectionHealthy();\r\n            this.proceedWithUpgrade_();\r\n        }\r\n        else {\r\n            // Send a ping to make sure the connection is healthy.\r\n            this.log_('sending ping on secondary.');\r\n            this.secondaryConn_.send({ t: 'c', d: { t: PING, d: {} } });\r\n        }\r\n    }\r\n    proceedWithUpgrade_() {\r\n        // tell this connection to consider itself open\r\n        this.secondaryConn_.start();\r\n        // send ack\r\n        this.log_('sending client ack on secondary');\r\n        this.secondaryConn_.send({ t: 'c', d: { t: SWITCH_ACK, d: {} } });\r\n        // send end packet on primary transport, switch to sending on this one\r\n        // can receive on this one, buffer responses until end received on primary transport\r\n        this.log_('Ending transmission on primary');\r\n        this.conn_.send({ t: 'c', d: { t: END_TRANSMISSION, d: {} } });\r\n        this.tx_ = this.secondaryConn_;\r\n        this.tryCleanupConnection();\r\n    }\r\n    onPrimaryMessageReceived_(parsedData) {\r\n        // Must refer to parsedData properties in quotes, so closure doesn't touch them.\r\n        const layer = requireKey('t', parsedData);\r\n        const data = requireKey('d', parsedData);\r\n        if (layer === 'c') {\r\n            this.onControl_(data);\r\n        }\r\n        else if (layer === 'd') {\r\n            this.onDataMessage_(data);\r\n        }\r\n    }\r\n    onDataMessage_(message) {\r\n        this.onPrimaryResponse_();\r\n        // We don't do anything with data messages, just kick them up a level\r\n        this.onMessage_(message);\r\n    }\r\n    onPrimaryResponse_() {\r\n        if (!this.isHealthy_) {\r\n            this.primaryResponsesRequired_--;\r\n            if (this.primaryResponsesRequired_ <= 0) {\r\n                this.log_('Primary connection is healthy.');\r\n                this.isHealthy_ = true;\r\n                this.conn_.markConnectionHealthy();\r\n            }\r\n        }\r\n    }\r\n    onControl_(controlData) {\r\n        const cmd = requireKey(MESSAGE_TYPE, controlData);\r\n        if (MESSAGE_DATA in controlData) {\r\n            const payload = controlData[MESSAGE_DATA];\r\n            if (cmd === SERVER_HELLO) {\r\n                this.onHandshake_(payload);\r\n            }\r\n            else if (cmd === END_TRANSMISSION) {\r\n                this.log_('recvd end transmission on primary');\r\n                this.rx_ = this.secondaryConn_;\r\n                for (let i = 0; i < this.pendingDataMessages.length; ++i) {\r\n                    this.onDataMessage_(this.pendingDataMessages[i]);\r\n                }\r\n                this.pendingDataMessages = [];\r\n                this.tryCleanupConnection();\r\n            }\r\n            else if (cmd === CONTROL_SHUTDOWN) {\r\n                // This was previously the 'onKill' callback passed to the lower-level connection\r\n                // payload in this case is the reason for the shutdown. Generally a human-readable error\r\n                this.onConnectionShutdown_(payload);\r\n            }\r\n            else if (cmd === CONTROL_RESET) {\r\n                // payload in this case is the host we should contact\r\n                this.onReset_(payload);\r\n            }\r\n            else if (cmd === CONTROL_ERROR) {\r\n                error('Server Error: ' + payload);\r\n            }\r\n            else if (cmd === CONTROL_PONG) {\r\n                this.log_('got pong on primary.');\r\n                this.onPrimaryResponse_();\r\n                this.sendPingOnPrimaryIfNecessary_();\r\n            }\r\n            else {\r\n                error('Unknown control packet command: ' + cmd);\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * @param handshake - The handshake data returned from the server\r\n     */\r\n    onHandshake_(handshake) {\r\n        const timestamp = handshake.ts;\r\n        const version = handshake.v;\r\n        const host = handshake.h;\r\n        this.sessionId = handshake.s;\r\n        this.repoInfo_.host = host;\r\n        // if we've already closed the connection, then don't bother trying to progress further\r\n        if (this.state_ === 0 /* CONNECTING */) {\r\n            this.conn_.start();\r\n            this.onConnectionEstablished_(this.conn_, timestamp);\r\n            if (PROTOCOL_VERSION !== version) {\r\n                warn('Protocol version mismatch detected');\r\n            }\r\n            // TODO: do we want to upgrade? when? maybe a delay?\r\n            this.tryStartUpgrade_();\r\n        }\r\n    }\r\n    tryStartUpgrade_() {\r\n        const conn = this.transportManager_.upgradeTransport();\r\n        if (conn) {\r\n            this.startUpgrade_(conn);\r\n        }\r\n    }\r\n    startUpgrade_(conn) {\r\n        this.secondaryConn_ = new conn(this.nextTransportId_(), this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, this.sessionId);\r\n        // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\r\n        // can consider the transport healthy.\r\n        this.secondaryResponsesRequired_ =\r\n            conn['responsesRequiredToBeHealthy'] || 0;\r\n        const onMessage = this.connReceiver_(this.secondaryConn_);\r\n        const onDisconnect = this.disconnReceiver_(this.secondaryConn_);\r\n        this.secondaryConn_.open(onMessage, onDisconnect);\r\n        // If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.\r\n        setTimeoutNonBlocking(() => {\r\n            if (this.secondaryConn_) {\r\n                this.log_('Timed out trying to upgrade.');\r\n                this.secondaryConn_.close();\r\n            }\r\n        }, Math.floor(UPGRADE_TIMEOUT));\r\n    }\r\n    onReset_(host) {\r\n        this.log_('Reset packet received.  New host: ' + host);\r\n        this.repoInfo_.host = host;\r\n        // TODO: if we're already \"connected\", we need to trigger a disconnect at the next layer up.\r\n        // We don't currently support resets after the connection has already been established\r\n        if (this.state_ === 1 /* CONNECTED */) {\r\n            this.close();\r\n        }\r\n        else {\r\n            // Close whatever connections we have open and start again.\r\n            this.closeConnections_();\r\n            this.start_();\r\n        }\r\n    }\r\n    onConnectionEstablished_(conn, timestamp) {\r\n        this.log_('Realtime connection established.');\r\n        this.conn_ = conn;\r\n        this.state_ = 1 /* CONNECTED */;\r\n        if (this.onReady_) {\r\n            this.onReady_(timestamp, this.sessionId);\r\n            this.onReady_ = null;\r\n        }\r\n        // If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,\r\n        // send some pings.\r\n        if (this.primaryResponsesRequired_ === 0) {\r\n            this.log_('Primary connection is healthy.');\r\n            this.isHealthy_ = true;\r\n        }\r\n        else {\r\n            setTimeoutNonBlocking(() => {\r\n                this.sendPingOnPrimaryIfNecessary_();\r\n            }, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));\r\n        }\r\n    }\r\n    sendPingOnPrimaryIfNecessary_() {\r\n        // If the connection isn't considered healthy yet, we'll send a noop ping packet request.\r\n        if (!this.isHealthy_ && this.state_ === 1 /* CONNECTED */) {\r\n            this.log_('sending ping on primary.');\r\n            this.sendData_({ t: 'c', d: { t: PING, d: {} } });\r\n        }\r\n    }\r\n    onSecondaryConnectionLost_() {\r\n        const conn = this.secondaryConn_;\r\n        this.secondaryConn_ = null;\r\n        if (this.tx_ === conn || this.rx_ === conn) {\r\n            // we are relying on this connection already in some capacity. Therefore, a failure is real\r\n            this.close();\r\n        }\r\n    }\r\n    /**\r\n     * @param everConnected - Whether or not the connection ever reached a server. Used to determine if\r\n     * we should flush the host cache\r\n     */\r\n    onConnectionLost_(everConnected) {\r\n        this.conn_ = null;\r\n        // NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting\r\n        // called on window close and RealtimeState.CONNECTING is no longer defined.  Just a guess.\r\n        if (!everConnected && this.state_ === 0 /* CONNECTING */) {\r\n            this.log_('Realtime connection failed.');\r\n            // Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away\r\n            if (this.repoInfo_.isCacheableHost()) {\r\n                PersistentStorage.remove('host:' + this.repoInfo_.host);\r\n                // reset the internal host to what we would show the user, i.e. <ns>.firebaseio.com\r\n                this.repoInfo_.internalHost = this.repoInfo_.host;\r\n            }\r\n        }\r\n        else if (this.state_ === 1 /* CONNECTED */) {\r\n            this.log_('Realtime connection lost.');\r\n        }\r\n        this.close();\r\n    }\r\n    onConnectionShutdown_(reason) {\r\n        this.log_('Connection shutdown command received. Shutting down...');\r\n        if (this.onKill_) {\r\n            this.onKill_(reason);\r\n            this.onKill_ = null;\r\n        }\r\n        // We intentionally don't want to fire onDisconnect (kill is a different case),\r\n        // so clear the callback.\r\n        this.onDisconnect_ = null;\r\n        this.close();\r\n    }\r\n    sendData_(data) {\r\n        if (this.state_ !== 1 /* CONNECTED */) {\r\n            throw 'Connection is not connected';\r\n        }\r\n        else {\r\n            this.tx_.send(data);\r\n        }\r\n    }\r\n    /**\r\n     * Cleans up this connection, calling the appropriate callbacks\r\n     */\r\n    close() {\r\n        if (this.state_ !== 2 /* DISCONNECTED */) {\r\n            this.log_('Closing realtime connection.');\r\n            this.state_ = 2 /* DISCONNECTED */;\r\n            this.closeConnections_();\r\n            if (this.onDisconnect_) {\r\n                this.onDisconnect_();\r\n                this.onDisconnect_ = null;\r\n            }\r\n        }\r\n    }\r\n    closeConnections_() {\r\n        this.log_('Shutting down all connections');\r\n        if (this.conn_) {\r\n            this.conn_.close();\r\n            this.conn_ = null;\r\n        }\r\n        if (this.secondaryConn_) {\r\n            this.secondaryConn_.close();\r\n            this.secondaryConn_ = null;\r\n        }\r\n        if (this.healthyTimeout_) {\r\n            clearTimeout(this.healthyTimeout_);\r\n            this.healthyTimeout_ = null;\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Interface defining the set of actions that can be performed against the Firebase server\r\n * (basically corresponds to our wire protocol).\r\n *\r\n * @interface\r\n */\r\nclass ServerActions {\r\n    put(pathString, data, onComplete, hash) { }\r\n    merge(pathString, data, onComplete, hash) { }\r\n    /**\r\n     * Refreshes the auth token for the current connection.\r\n     * @param token - The authentication token\r\n     */\r\n    refreshAuthToken(token) { }\r\n    /**\r\n     * Refreshes the app check token for the current connection.\r\n     * @param token The app check token\r\n     */\r\n    refreshAppCheckToken(token) { }\r\n    onDisconnectPut(pathString, data, onComplete) { }\r\n    onDisconnectMerge(pathString, data, onComplete) { }\r\n    onDisconnectCancel(pathString, onComplete) { }\r\n    reportStats(stats) { }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Base class to be used if you want to emit events. Call the constructor with\r\n * the set of allowed event names.\r\n */\r\nclass EventEmitter {\r\n    constructor(allowedEvents_) {\r\n        this.allowedEvents_ = allowedEvents_;\r\n        this.listeners_ = {};\r\n        assert(Array.isArray(allowedEvents_) && allowedEvents_.length > 0, 'Requires a non-empty array');\r\n    }\r\n    /**\r\n     * To be called by derived classes to trigger events.\r\n     */\r\n    trigger(eventType, ...varArgs) {\r\n        if (Array.isArray(this.listeners_[eventType])) {\r\n            // Clone the list, since callbacks could add/remove listeners.\r\n            const listeners = [...this.listeners_[eventType]];\r\n            for (let i = 0; i < listeners.length; i++) {\r\n                listeners[i].callback.apply(listeners[i].context, varArgs);\r\n            }\r\n        }\r\n    }\r\n    on(eventType, callback, context) {\r\n        this.validateEventType_(eventType);\r\n        this.listeners_[eventType] = this.listeners_[eventType] || [];\r\n        this.listeners_[eventType].push({ callback, context });\r\n        const eventData = this.getInitialEvent(eventType);\r\n        if (eventData) {\r\n            callback.apply(context, eventData);\r\n        }\r\n    }\r\n    off(eventType, callback, context) {\r\n        this.validateEventType_(eventType);\r\n        const listeners = this.listeners_[eventType] || [];\r\n        for (let i = 0; i < listeners.length; i++) {\r\n            if (listeners[i].callback === callback &&\r\n                (!context || context === listeners[i].context)) {\r\n                listeners.splice(i, 1);\r\n                return;\r\n            }\r\n        }\r\n    }\r\n    validateEventType_(eventType) {\r\n        assert(this.allowedEvents_.find(et => {\r\n            return et === eventType;\r\n        }), 'Unknown event: ' + eventType);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Monitors online state (as reported by window.online/offline events).\r\n *\r\n * The expectation is that this could have many false positives (thinks we are online\r\n * when we're not), but no false negatives.  So we can safely use it to determine when\r\n * we definitely cannot reach the internet.\r\n */\r\nclass OnlineMonitor extends EventEmitter {\r\n    constructor() {\r\n        super(['online']);\r\n        this.online_ = true;\r\n        // We've had repeated complaints that Cordova apps can get stuck \"offline\", e.g.\r\n        // https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810\r\n        // It would seem that the 'online' event does not always fire consistently. So we disable it\r\n        // for Cordova.\r\n        if (typeof window !== 'undefined' &&\r\n            typeof window.addEventListener !== 'undefined' &&\r\n            !isMobileCordova()) {\r\n            window.addEventListener('online', () => {\r\n                if (!this.online_) {\r\n                    this.online_ = true;\r\n                    this.trigger('online', true);\r\n                }\r\n            }, false);\r\n            window.addEventListener('offline', () => {\r\n                if (this.online_) {\r\n                    this.online_ = false;\r\n                    this.trigger('online', false);\r\n                }\r\n            }, false);\r\n        }\r\n    }\r\n    static getInstance() {\r\n        return new OnlineMonitor();\r\n    }\r\n    getInitialEvent(eventType) {\r\n        assert(eventType === 'online', 'Unknown event type: ' + eventType);\r\n        return [this.online_];\r\n    }\r\n    currentlyOnline() {\r\n        return this.online_;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/** Maximum key depth. */\r\nconst MAX_PATH_DEPTH = 32;\r\n/** Maximum number of (UTF8) bytes in a Firebase path. */\r\nconst MAX_PATH_LENGTH_BYTES = 768;\r\n/**\r\n * An immutable object representing a parsed path.  It's immutable so that you\r\n * can pass them around to other functions without worrying about them changing\r\n * it.\r\n */\r\nclass Path {\r\n    /**\r\n     * @param pathOrString - Path string to parse, or another path, or the raw\r\n     * tokens array\r\n     */\r\n    constructor(pathOrString, pieceNum) {\r\n        if (pieceNum === void 0) {\r\n            this.pieces_ = pathOrString.split('/');\r\n            // Remove empty pieces.\r\n            let copyTo = 0;\r\n            for (let i = 0; i < this.pieces_.length; i++) {\r\n                if (this.pieces_[i].length > 0) {\r\n                    this.pieces_[copyTo] = this.pieces_[i];\r\n                    copyTo++;\r\n                }\r\n            }\r\n            this.pieces_.length = copyTo;\r\n            this.pieceNum_ = 0;\r\n        }\r\n        else {\r\n            this.pieces_ = pathOrString;\r\n            this.pieceNum_ = pieceNum;\r\n        }\r\n    }\r\n    toString() {\r\n        let pathString = '';\r\n        for (let i = this.pieceNum_; i < this.pieces_.length; i++) {\r\n            if (this.pieces_[i] !== '') {\r\n                pathString += '/' + this.pieces_[i];\r\n            }\r\n        }\r\n        return pathString || '/';\r\n    }\r\n}\r\nfunction newEmptyPath() {\r\n    return new Path('');\r\n}\r\nfunction pathGetFront(path) {\r\n    if (path.pieceNum_ >= path.pieces_.length) {\r\n        return null;\r\n    }\r\n    return path.pieces_[path.pieceNum_];\r\n}\r\n/**\r\n * @returns The number of segments in this path\r\n */\r\nfunction pathGetLength(path) {\r\n    return path.pieces_.length - path.pieceNum_;\r\n}\r\nfunction pathPopFront(path) {\r\n    let pieceNum = path.pieceNum_;\r\n    if (pieceNum < path.pieces_.length) {\r\n        pieceNum++;\r\n    }\r\n    return new Path(path.pieces_, pieceNum);\r\n}\r\nfunction pathGetBack(path) {\r\n    if (path.pieceNum_ < path.pieces_.length) {\r\n        return path.pieces_[path.pieces_.length - 1];\r\n    }\r\n    return null;\r\n}\r\nfunction pathToUrlEncodedString(path) {\r\n    let pathString = '';\r\n    for (let i = path.pieceNum_; i < path.pieces_.length; i++) {\r\n        if (path.pieces_[i] !== '') {\r\n            pathString += '/' + encodeURIComponent(String(path.pieces_[i]));\r\n        }\r\n    }\r\n    return pathString || '/';\r\n}\r\n/**\r\n * Shallow copy of the parts of the path.\r\n *\r\n */\r\nfunction pathSlice(path, begin = 0) {\r\n    return path.pieces_.slice(path.pieceNum_ + begin);\r\n}\r\nfunction pathParent(path) {\r\n    if (path.pieceNum_ >= path.pieces_.length) {\r\n        return null;\r\n    }\r\n    const pieces = [];\r\n    for (let i = path.pieceNum_; i < path.pieces_.length - 1; i++) {\r\n        pieces.push(path.pieces_[i]);\r\n    }\r\n    return new Path(pieces, 0);\r\n}\r\nfunction pathChild(path, childPathObj) {\r\n    const pieces = [];\r\n    for (let i = path.pieceNum_; i < path.pieces_.length; i++) {\r\n        pieces.push(path.pieces_[i]);\r\n    }\r\n    if (childPathObj instanceof Path) {\r\n        for (let i = childPathObj.pieceNum_; i < childPathObj.pieces_.length; i++) {\r\n            pieces.push(childPathObj.pieces_[i]);\r\n        }\r\n    }\r\n    else {\r\n        const childPieces = childPathObj.split('/');\r\n        for (let i = 0; i < childPieces.length; i++) {\r\n            if (childPieces[i].length > 0) {\r\n                pieces.push(childPieces[i]);\r\n            }\r\n        }\r\n    }\r\n    return new Path(pieces, 0);\r\n}\r\n/**\r\n * @returns True if there are no segments in this path\r\n */\r\nfunction pathIsEmpty(path) {\r\n    return path.pieceNum_ >= path.pieces_.length;\r\n}\r\n/**\r\n * @returns The path from outerPath to innerPath\r\n */\r\nfunction newRelativePath(outerPath, innerPath) {\r\n    const outer = pathGetFront(outerPath), inner = pathGetFront(innerPath);\r\n    if (outer === null) {\r\n        return innerPath;\r\n    }\r\n    else if (outer === inner) {\r\n        return newRelativePath(pathPopFront(outerPath), pathPopFront(innerPath));\r\n    }\r\n    else {\r\n        throw new Error('INTERNAL ERROR: innerPath (' +\r\n            innerPath +\r\n            ') is not within ' +\r\n            'outerPath (' +\r\n            outerPath +\r\n            ')');\r\n    }\r\n}\r\n/**\r\n * @returns -1, 0, 1 if left is less, equal, or greater than the right.\r\n */\r\nfunction pathCompare(left, right) {\r\n    const leftKeys = pathSlice(left, 0);\r\n    const rightKeys = pathSlice(right, 0);\r\n    for (let i = 0; i < leftKeys.length && i < rightKeys.length; i++) {\r\n        const cmp = nameCompare(leftKeys[i], rightKeys[i]);\r\n        if (cmp !== 0) {\r\n            return cmp;\r\n        }\r\n    }\r\n    if (leftKeys.length === rightKeys.length) {\r\n        return 0;\r\n    }\r\n    return leftKeys.length < rightKeys.length ? -1 : 1;\r\n}\r\n/**\r\n * @returns true if paths are the same.\r\n */\r\nfunction pathEquals(path, other) {\r\n    if (pathGetLength(path) !== pathGetLength(other)) {\r\n        return false;\r\n    }\r\n    for (let i = path.pieceNum_, j = other.pieceNum_; i <= path.pieces_.length; i++, j++) {\r\n        if (path.pieces_[i] !== other.pieces_[j]) {\r\n            return false;\r\n        }\r\n    }\r\n    return true;\r\n}\r\n/**\r\n * @returns True if this path is a parent (or the same as) other\r\n */\r\nfunction pathContains(path, other) {\r\n    let i = path.pieceNum_;\r\n    let j = other.pieceNum_;\r\n    if (pathGetLength(path) > pathGetLength(other)) {\r\n        return false;\r\n    }\r\n    while (i < path.pieces_.length) {\r\n        if (path.pieces_[i] !== other.pieces_[j]) {\r\n            return false;\r\n        }\r\n        ++i;\r\n        ++j;\r\n    }\r\n    return true;\r\n}\r\n/**\r\n * Dynamic (mutable) path used to count path lengths.\r\n *\r\n * This class is used to efficiently check paths for valid\r\n * length (in UTF8 bytes) and depth (used in path validation).\r\n *\r\n * Throws Error exception if path is ever invalid.\r\n *\r\n * The definition of a path always begins with '/'.\r\n */\r\nclass ValidationPath {\r\n    /**\r\n     * @param path - Initial Path.\r\n     * @param errorPrefix_ - Prefix for any error messages.\r\n     */\r\n    constructor(path, errorPrefix_) {\r\n        this.errorPrefix_ = errorPrefix_;\r\n        this.parts_ = pathSlice(path, 0);\r\n        /** Initialize to number of '/' chars needed in path. */\r\n        this.byteLength_ = Math.max(1, this.parts_.length);\r\n        for (let i = 0; i < this.parts_.length; i++) {\r\n            this.byteLength_ += stringLength(this.parts_[i]);\r\n        }\r\n        validationPathCheckValid(this);\r\n    }\r\n}\r\nfunction validationPathPush(validationPath, child) {\r\n    // Count the needed '/'\r\n    if (validationPath.parts_.length > 0) {\r\n        validationPath.byteLength_ += 1;\r\n    }\r\n    validationPath.parts_.push(child);\r\n    validationPath.byteLength_ += stringLength(child);\r\n    validationPathCheckValid(validationPath);\r\n}\r\nfunction validationPathPop(validationPath) {\r\n    const last = validationPath.parts_.pop();\r\n    validationPath.byteLength_ -= stringLength(last);\r\n    // Un-count the previous '/'\r\n    if (validationPath.parts_.length > 0) {\r\n        validationPath.byteLength_ -= 1;\r\n    }\r\n}\r\nfunction validationPathCheckValid(validationPath) {\r\n    if (validationPath.byteLength_ > MAX_PATH_LENGTH_BYTES) {\r\n        throw new Error(validationPath.errorPrefix_ +\r\n            'has a key path longer than ' +\r\n            MAX_PATH_LENGTH_BYTES +\r\n            ' bytes (' +\r\n            validationPath.byteLength_ +\r\n            ').');\r\n    }\r\n    if (validationPath.parts_.length > MAX_PATH_DEPTH) {\r\n        throw new Error(validationPath.errorPrefix_ +\r\n            'path specified exceeds the maximum depth that can be written (' +\r\n            MAX_PATH_DEPTH +\r\n            ') or object contains a cycle ' +\r\n            validationPathToErrorString(validationPath));\r\n    }\r\n}\r\n/**\r\n * String for use in error messages - uses '.' notation for path.\r\n */\r\nfunction validationPathToErrorString(validationPath) {\r\n    if (validationPath.parts_.length === 0) {\r\n        return '';\r\n    }\r\n    return \"in property '\" + validationPath.parts_.join('.') + \"'\";\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass VisibilityMonitor extends EventEmitter {\r\n    constructor() {\r\n        super(['visible']);\r\n        let hidden;\r\n        let visibilityChange;\r\n        if (typeof document !== 'undefined' &&\r\n            typeof document.addEventListener !== 'undefined') {\r\n            if (typeof document['hidden'] !== 'undefined') {\r\n                // Opera 12.10 and Firefox 18 and later support\r\n                visibilityChange = 'visibilitychange';\r\n                hidden = 'hidden';\r\n            }\r\n            else if (typeof document['mozHidden'] !== 'undefined') {\r\n                visibilityChange = 'mozvisibilitychange';\r\n                hidden = 'mozHidden';\r\n            }\r\n            else if (typeof document['msHidden'] !== 'undefined') {\r\n                visibilityChange = 'msvisibilitychange';\r\n                hidden = 'msHidden';\r\n            }\r\n            else if (typeof document['webkitHidden'] !== 'undefined') {\r\n                visibilityChange = 'webkitvisibilitychange';\r\n                hidden = 'webkitHidden';\r\n            }\r\n        }\r\n        // Initially, we always assume we are visible. This ensures that in browsers\r\n        // without page visibility support or in cases where we are never visible\r\n        // (e.g. chrome extension), we act as if we are visible, i.e. don't delay\r\n        // reconnects\r\n        this.visible_ = true;\r\n        if (visibilityChange) {\r\n            document.addEventListener(visibilityChange, () => {\r\n                const visible = !document[hidden];\r\n                if (visible !== this.visible_) {\r\n                    this.visible_ = visible;\r\n                    this.trigger('visible', visible);\r\n                }\r\n            }, false);\r\n        }\r\n    }\r\n    static getInstance() {\r\n        return new VisibilityMonitor();\r\n    }\r\n    getInitialEvent(eventType) {\r\n        assert(eventType === 'visible', 'Unknown event type: ' + eventType);\r\n        return [this.visible_];\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst RECONNECT_MIN_DELAY = 1000;\r\nconst RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)\r\nconst GET_CONNECT_TIMEOUT = 3 * 1000;\r\nconst RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)\r\nconst RECONNECT_DELAY_MULTIPLIER = 1.3;\r\nconst RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.\r\nconst SERVER_KILL_INTERRUPT_REASON = 'server_kill';\r\n// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.\r\nconst INVALID_TOKEN_THRESHOLD = 3;\r\n/**\r\n * Firebase connection.  Abstracts wire protocol and handles reconnecting.\r\n *\r\n * NOTE: All JSON objects sent to the realtime connection must have property names enclosed\r\n * in quotes to make sure the closure compiler does not minify them.\r\n */\r\nclass PersistentConnection extends ServerActions {\r\n    /**\r\n     * @param repoInfo_ - Data about the namespace we are connecting to\r\n     * @param applicationId_ - The Firebase App ID for this project\r\n     * @param onDataUpdate_ - A callback for new data from the server\r\n     */\r\n    constructor(repoInfo_, applicationId_, onDataUpdate_, onConnectStatus_, onServerInfoUpdate_, authTokenProvider_, appCheckTokenProvider_, authOverride_) {\r\n        super();\r\n        this.repoInfo_ = repoInfo_;\r\n        this.applicationId_ = applicationId_;\r\n        this.onDataUpdate_ = onDataUpdate_;\r\n        this.onConnectStatus_ = onConnectStatus_;\r\n        this.onServerInfoUpdate_ = onServerInfoUpdate_;\r\n        this.authTokenProvider_ = authTokenProvider_;\r\n        this.appCheckTokenProvider_ = appCheckTokenProvider_;\r\n        this.authOverride_ = authOverride_;\r\n        // Used for diagnostic logging.\r\n        this.id = PersistentConnection.nextPersistentConnectionId_++;\r\n        this.log_ = logWrapper('p:' + this.id + ':');\r\n        this.interruptReasons_ = {};\r\n        this.listens = new Map();\r\n        this.outstandingPuts_ = [];\r\n        this.outstandingGets_ = [];\r\n        this.outstandingPutCount_ = 0;\r\n        this.outstandingGetCount_ = 0;\r\n        this.onDisconnectRequestQueue_ = [];\r\n        this.connected_ = false;\r\n        this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n        this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;\r\n        this.securityDebugCallback_ = null;\r\n        this.lastSessionId = null;\r\n        this.establishConnectionTimer_ = null;\r\n        this.visible_ = false;\r\n        // Before we get connected, we keep a queue of pending messages to send.\r\n        this.requestCBHash_ = {};\r\n        this.requestNumber_ = 0;\r\n        this.realtime_ = null;\r\n        this.authToken_ = null;\r\n        this.appCheckToken_ = null;\r\n        this.forceTokenRefresh_ = false;\r\n        this.invalidAuthTokenCount_ = 0;\r\n        this.invalidAppCheckTokenCount_ = 0;\r\n        this.firstConnection_ = true;\r\n        this.lastConnectionAttemptTime_ = null;\r\n        this.lastConnectionEstablishedTime_ = null;\r\n        if (authOverride_ && !isNodeSdk()) {\r\n            throw new Error('Auth override specified in options, but not supported on non Node.js platforms');\r\n        }\r\n        VisibilityMonitor.getInstance().on('visible', this.onVisible_, this);\r\n        if (repoInfo_.host.indexOf('fblocal') === -1) {\r\n            OnlineMonitor.getInstance().on('online', this.onOnline_, this);\r\n        }\r\n    }\r\n    sendRequest(action, body, onResponse) {\r\n        const curReqNum = ++this.requestNumber_;\r\n        const msg = { r: curReqNum, a: action, b: body };\r\n        this.log_(stringify(msg));\r\n        assert(this.connected_, \"sendRequest call when we're not connected not allowed.\");\r\n        this.realtime_.sendRequest(msg);\r\n        if (onResponse) {\r\n            this.requestCBHash_[curReqNum] = onResponse;\r\n        }\r\n    }\r\n    get(query) {\r\n        this.initConnection_();\r\n        const deferred = new Deferred();\r\n        const request = {\r\n            p: query._path.toString(),\r\n            q: query._queryObject\r\n        };\r\n        const outstandingGet = {\r\n            action: 'g',\r\n            request,\r\n            onComplete: (message) => {\r\n                const payload = message['d'];\r\n                if (message['s'] === 'ok') {\r\n                    this.onDataUpdate_(request['p'], payload, \r\n                    /*isMerge*/ false, \r\n                    /*tag*/ null);\r\n                    deferred.resolve(payload);\r\n                }\r\n                else {\r\n                    deferred.reject(payload);\r\n                }\r\n            }\r\n        };\r\n        this.outstandingGets_.push(outstandingGet);\r\n        this.outstandingGetCount_++;\r\n        const index = this.outstandingGets_.length - 1;\r\n        if (!this.connected_) {\r\n            setTimeout(() => {\r\n                const get = this.outstandingGets_[index];\r\n                if (get === undefined || outstandingGet !== get) {\r\n                    return;\r\n                }\r\n                delete this.outstandingGets_[index];\r\n                this.outstandingGetCount_--;\r\n                if (this.outstandingGetCount_ === 0) {\r\n                    this.outstandingGets_ = [];\r\n                }\r\n                this.log_('get ' + index + ' timed out on connection');\r\n                deferred.reject(new Error('Client is offline.'));\r\n            }, GET_CONNECT_TIMEOUT);\r\n        }\r\n        if (this.connected_) {\r\n            this.sendGet_(index);\r\n        }\r\n        return deferred.promise;\r\n    }\r\n    listen(query, currentHashFn, tag, onComplete) {\r\n        this.initConnection_();\r\n        const queryId = query._queryIdentifier;\r\n        const pathString = query._path.toString();\r\n        this.log_('Listen called for ' + pathString + ' ' + queryId);\r\n        if (!this.listens.has(pathString)) {\r\n            this.listens.set(pathString, new Map());\r\n        }\r\n        assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'listen() called for non-default but complete query');\r\n        assert(!this.listens.get(pathString).has(queryId), 'listen() called twice for same path/queryId.');\r\n        const listenSpec = {\r\n            onComplete,\r\n            hashFn: currentHashFn,\r\n            query,\r\n            tag\r\n        };\r\n        this.listens.get(pathString).set(queryId, listenSpec);\r\n        if (this.connected_) {\r\n            this.sendListen_(listenSpec);\r\n        }\r\n    }\r\n    sendGet_(index) {\r\n        const get = this.outstandingGets_[index];\r\n        this.sendRequest('g', get.request, (message) => {\r\n            delete this.outstandingGets_[index];\r\n            this.outstandingGetCount_--;\r\n            if (this.outstandingGetCount_ === 0) {\r\n                this.outstandingGets_ = [];\r\n            }\r\n            if (get.onComplete) {\r\n                get.onComplete(message);\r\n            }\r\n        });\r\n    }\r\n    sendListen_(listenSpec) {\r\n        const query = listenSpec.query;\r\n        const pathString = query._path.toString();\r\n        const queryId = query._queryIdentifier;\r\n        this.log_('Listen on ' + pathString + ' for ' + queryId);\r\n        const req = { /*path*/ p: pathString };\r\n        const action = 'q';\r\n        // Only bother to send query if it's non-default.\r\n        if (listenSpec.tag) {\r\n            req['q'] = query._queryObject;\r\n            req['t'] = listenSpec.tag;\r\n        }\r\n        req[ /*hash*/'h'] = listenSpec.hashFn();\r\n        this.sendRequest(action, req, (message) => {\r\n            const payload = message[ /*data*/'d'];\r\n            const status = message[ /*status*/'s'];\r\n            // print warnings in any case...\r\n            PersistentConnection.warnOnListenWarnings_(payload, query);\r\n            const currentListenSpec = this.listens.get(pathString) &&\r\n                this.listens.get(pathString).get(queryId);\r\n            // only trigger actions if the listen hasn't been removed and readded\r\n            if (currentListenSpec === listenSpec) {\r\n                this.log_('listen response', message);\r\n                if (status !== 'ok') {\r\n                    this.removeListen_(pathString, queryId);\r\n                }\r\n                if (listenSpec.onComplete) {\r\n                    listenSpec.onComplete(status, payload);\r\n                }\r\n            }\r\n        });\r\n    }\r\n    static warnOnListenWarnings_(payload, query) {\r\n        if (payload && typeof payload === 'object' && contains(payload, 'w')) {\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            const warnings = safeGet(payload, 'w');\r\n            if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {\r\n                const indexSpec = '\".indexOn\": \"' + query._queryParams.getIndex().toString() + '\"';\r\n                const indexPath = query._path.toString();\r\n                warn(`Using an unspecified index. Your data will be downloaded and ` +\r\n                    `filtered on the client. Consider adding ${indexSpec} at ` +\r\n                    `${indexPath} to your security rules for better performance.`);\r\n            }\r\n        }\r\n    }\r\n    refreshAuthToken(token) {\r\n        this.authToken_ = token;\r\n        this.log_('Auth token refreshed');\r\n        if (this.authToken_) {\r\n            this.tryAuth();\r\n        }\r\n        else {\r\n            //If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete\r\n            //the credential so we dont become authenticated next time we connect.\r\n            if (this.connected_) {\r\n                this.sendRequest('unauth', {}, () => { });\r\n            }\r\n        }\r\n        this.reduceReconnectDelayIfAdminCredential_(token);\r\n    }\r\n    reduceReconnectDelayIfAdminCredential_(credential) {\r\n        // NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).\r\n        // Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.\r\n        const isFirebaseSecret = credential && credential.length === 40;\r\n        if (isFirebaseSecret || isAdmin(credential)) {\r\n            this.log_('Admin auth credential detected.  Reducing max reconnect time.');\r\n            this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\r\n        }\r\n    }\r\n    refreshAppCheckToken(token) {\r\n        this.appCheckToken_ = token;\r\n        this.log_('App check token refreshed');\r\n        if (this.appCheckToken_) {\r\n            this.tryAppCheck();\r\n        }\r\n        else {\r\n            //If we're connected we want to let the server know to unauthenticate us.\r\n            //If we're not connected, simply delete the credential so we dont become\r\n            // authenticated next time we connect.\r\n            if (this.connected_) {\r\n                this.sendRequest('unappeck', {}, () => { });\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like\r\n     * a auth revoked (the connection is closed).\r\n     */\r\n    tryAuth() {\r\n        if (this.connected_ && this.authToken_) {\r\n            const token = this.authToken_;\r\n            const authMethod = isValidFormat(token) ? 'auth' : 'gauth';\r\n            const requestData = { cred: token };\r\n            if (this.authOverride_ === null) {\r\n                requestData['noauth'] = true;\r\n            }\r\n            else if (typeof this.authOverride_ === 'object') {\r\n                requestData['authvar'] = this.authOverride_;\r\n            }\r\n            this.sendRequest(authMethod, requestData, (res) => {\r\n                const status = res[ /*status*/'s'];\r\n                const data = res[ /*data*/'d'] || 'error';\r\n                if (this.authToken_ === token) {\r\n                    if (status === 'ok') {\r\n                        this.invalidAuthTokenCount_ = 0;\r\n                    }\r\n                    else {\r\n                        // Triggers reconnect and force refresh for auth token\r\n                        this.onAuthRevoked_(status, data);\r\n                    }\r\n                }\r\n            });\r\n        }\r\n    }\r\n    /**\r\n     * Attempts to authenticate with the given token. If the authentication\r\n     * attempt fails, it's triggered like the token was revoked (the connection is\r\n     * closed).\r\n     */\r\n    tryAppCheck() {\r\n        if (this.connected_ && this.appCheckToken_) {\r\n            this.sendRequest('appcheck', { 'token': this.appCheckToken_ }, (res) => {\r\n                const status = res[ /*status*/'s'];\r\n                const data = res[ /*data*/'d'] || 'error';\r\n                if (status === 'ok') {\r\n                    this.invalidAppCheckTokenCount_ = 0;\r\n                }\r\n                else {\r\n                    this.onAppCheckRevoked_(status, data);\r\n                }\r\n            });\r\n        }\r\n    }\r\n    /**\r\n     * @inheritDoc\r\n     */\r\n    unlisten(query, tag) {\r\n        const pathString = query._path.toString();\r\n        const queryId = query._queryIdentifier;\r\n        this.log_('Unlisten called for ' + pathString + ' ' + queryId);\r\n        assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'unlisten() called for non-default but complete query');\r\n        const listen = this.removeListen_(pathString, queryId);\r\n        if (listen && this.connected_) {\r\n            this.sendUnlisten_(pathString, queryId, query._queryObject, tag);\r\n        }\r\n    }\r\n    sendUnlisten_(pathString, queryId, queryObj, tag) {\r\n        this.log_('Unlisten on ' + pathString + ' for ' + queryId);\r\n        const req = { /*path*/ p: pathString };\r\n        const action = 'n';\r\n        // Only bother sending queryId if it's non-default.\r\n        if (tag) {\r\n            req['q'] = queryObj;\r\n            req['t'] = tag;\r\n        }\r\n        this.sendRequest(action, req);\r\n    }\r\n    onDisconnectPut(pathString, data, onComplete) {\r\n        this.initConnection_();\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('o', pathString, data, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString,\r\n                action: 'o',\r\n                data,\r\n                onComplete\r\n            });\r\n        }\r\n    }\r\n    onDisconnectMerge(pathString, data, onComplete) {\r\n        this.initConnection_();\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('om', pathString, data, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString,\r\n                action: 'om',\r\n                data,\r\n                onComplete\r\n            });\r\n        }\r\n    }\r\n    onDisconnectCancel(pathString, onComplete) {\r\n        this.initConnection_();\r\n        if (this.connected_) {\r\n            this.sendOnDisconnect_('oc', pathString, null, onComplete);\r\n        }\r\n        else {\r\n            this.onDisconnectRequestQueue_.push({\r\n                pathString,\r\n                action: 'oc',\r\n                data: null,\r\n                onComplete\r\n            });\r\n        }\r\n    }\r\n    sendOnDisconnect_(action, pathString, data, onComplete) {\r\n        const request = { /*path*/ p: pathString, /*data*/ d: data };\r\n        this.log_('onDisconnect ' + action, request);\r\n        this.sendRequest(action, request, (response) => {\r\n            if (onComplete) {\r\n                setTimeout(() => {\r\n                    onComplete(response[ /*status*/'s'], response[ /* data */'d']);\r\n                }, Math.floor(0));\r\n            }\r\n        });\r\n    }\r\n    put(pathString, data, onComplete, hash) {\r\n        this.putInternal('p', pathString, data, onComplete, hash);\r\n    }\r\n    merge(pathString, data, onComplete, hash) {\r\n        this.putInternal('m', pathString, data, onComplete, hash);\r\n    }\r\n    putInternal(action, pathString, data, onComplete, hash) {\r\n        this.initConnection_();\r\n        const request = {\r\n            /*path*/ p: pathString,\r\n            /*data*/ d: data\r\n        };\r\n        if (hash !== undefined) {\r\n            request[ /*hash*/'h'] = hash;\r\n        }\r\n        // TODO: Only keep track of the most recent put for a given path?\r\n        this.outstandingPuts_.push({\r\n            action,\r\n            request,\r\n            onComplete\r\n        });\r\n        this.outstandingPutCount_++;\r\n        const index = this.outstandingPuts_.length - 1;\r\n        if (this.connected_) {\r\n            this.sendPut_(index);\r\n        }\r\n        else {\r\n            this.log_('Buffering put: ' + pathString);\r\n        }\r\n    }\r\n    sendPut_(index) {\r\n        const action = this.outstandingPuts_[index].action;\r\n        const request = this.outstandingPuts_[index].request;\r\n        const onComplete = this.outstandingPuts_[index].onComplete;\r\n        this.outstandingPuts_[index].queued = this.connected_;\r\n        this.sendRequest(action, request, (message) => {\r\n            this.log_(action + ' response', message);\r\n            delete this.outstandingPuts_[index];\r\n            this.outstandingPutCount_--;\r\n            // Clean up array occasionally.\r\n            if (this.outstandingPutCount_ === 0) {\r\n                this.outstandingPuts_ = [];\r\n            }\r\n            if (onComplete) {\r\n                onComplete(message[ /*status*/'s'], message[ /* data */'d']);\r\n            }\r\n        });\r\n    }\r\n    reportStats(stats) {\r\n        // If we're not connected, we just drop the stats.\r\n        if (this.connected_) {\r\n            const request = { /*counters*/ c: stats };\r\n            this.log_('reportStats', request);\r\n            this.sendRequest(/*stats*/ 's', request, result => {\r\n                const status = result[ /*status*/'s'];\r\n                if (status !== 'ok') {\r\n                    const errorReason = result[ /* data */'d'];\r\n                    this.log_('reportStats', 'Error sending stats: ' + errorReason);\r\n                }\r\n            });\r\n        }\r\n    }\r\n    onDataMessage_(message) {\r\n        if ('r' in message) {\r\n            // this is a response\r\n            this.log_('from server: ' + stringify(message));\r\n            const reqNum = message['r'];\r\n            const onResponse = this.requestCBHash_[reqNum];\r\n            if (onResponse) {\r\n                delete this.requestCBHash_[reqNum];\r\n                onResponse(message[ /*body*/'b']);\r\n            }\r\n        }\r\n        else if ('error' in message) {\r\n            throw 'A server-side error has occurred: ' + message['error'];\r\n        }\r\n        else if ('a' in message) {\r\n            // a and b are action and body, respectively\r\n            this.onDataPush_(message['a'], message['b']);\r\n        }\r\n    }\r\n    onDataPush_(action, body) {\r\n        this.log_('handleServerMessage', action, body);\r\n        if (action === 'd') {\r\n            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], \r\n            /*isMerge*/ false, body['t']);\r\n        }\r\n        else if (action === 'm') {\r\n            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], \r\n            /*isMerge=*/ true, body['t']);\r\n        }\r\n        else if (action === 'c') {\r\n            this.onListenRevoked_(body[ /*path*/'p'], body[ /*query*/'q']);\r\n        }\r\n        else if (action === 'ac') {\r\n            this.onAuthRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);\r\n        }\r\n        else if (action === 'apc') {\r\n            this.onAppCheckRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);\r\n        }\r\n        else if (action === 'sd') {\r\n            this.onSecurityDebugPacket_(body);\r\n        }\r\n        else {\r\n            error('Unrecognized action received from server: ' +\r\n                stringify(action) +\r\n                '\\nAre you using the latest client?');\r\n        }\r\n    }\r\n    onReady_(timestamp, sessionId) {\r\n        this.log_('connection ready');\r\n        this.connected_ = true;\r\n        this.lastConnectionEstablishedTime_ = new Date().getTime();\r\n        this.handleTimestamp_(timestamp);\r\n        this.lastSessionId = sessionId;\r\n        if (this.firstConnection_) {\r\n            this.sendConnectStats_();\r\n        }\r\n        this.restoreState_();\r\n        this.firstConnection_ = false;\r\n        this.onConnectStatus_(true);\r\n    }\r\n    scheduleConnect_(timeout) {\r\n        assert(!this.realtime_, \"Scheduling a connect when we're already connected/ing?\");\r\n        if (this.establishConnectionTimer_) {\r\n            clearTimeout(this.establishConnectionTimer_);\r\n        }\r\n        // NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating \"Security Error\" in\r\n        // Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).\r\n        this.establishConnectionTimer_ = setTimeout(() => {\r\n            this.establishConnectionTimer_ = null;\r\n            this.establishConnection_();\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        }, Math.floor(timeout));\r\n    }\r\n    initConnection_() {\r\n        if (!this.realtime_ && this.firstConnection_) {\r\n            this.scheduleConnect_(0);\r\n        }\r\n    }\r\n    onVisible_(visible) {\r\n        // NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.\r\n        if (visible &&\r\n            !this.visible_ &&\r\n            this.reconnectDelay_ === this.maxReconnectDelay_) {\r\n            this.log_('Window became visible.  Reducing delay.');\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n        this.visible_ = visible;\r\n    }\r\n    onOnline_(online) {\r\n        if (online) {\r\n            this.log_('Browser went online.');\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n        else {\r\n            this.log_('Browser went offline.  Killing connection.');\r\n            if (this.realtime_) {\r\n                this.realtime_.close();\r\n            }\r\n        }\r\n    }\r\n    onRealtimeDisconnect_() {\r\n        this.log_('data client disconnected');\r\n        this.connected_ = false;\r\n        this.realtime_ = null;\r\n        // Since we don't know if our sent transactions succeeded or not, we need to cancel them.\r\n        this.cancelSentTransactions_();\r\n        // Clear out the pending requests.\r\n        this.requestCBHash_ = {};\r\n        if (this.shouldReconnect_()) {\r\n            if (!this.visible_) {\r\n                this.log_(\"Window isn't visible.  Delaying reconnect.\");\r\n                this.reconnectDelay_ = this.maxReconnectDelay_;\r\n                this.lastConnectionAttemptTime_ = new Date().getTime();\r\n            }\r\n            else if (this.lastConnectionEstablishedTime_) {\r\n                // If we've been connected long enough, reset reconnect delay to minimum.\r\n                const timeSinceLastConnectSucceeded = new Date().getTime() - this.lastConnectionEstablishedTime_;\r\n                if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT) {\r\n                    this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n                }\r\n                this.lastConnectionEstablishedTime_ = null;\r\n            }\r\n            const timeSinceLastConnectAttempt = new Date().getTime() - this.lastConnectionAttemptTime_;\r\n            let reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);\r\n            reconnectDelay = Math.random() * reconnectDelay;\r\n            this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');\r\n            this.scheduleConnect_(reconnectDelay);\r\n            // Adjust reconnect delay for next time.\r\n            this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);\r\n        }\r\n        this.onConnectStatus_(false);\r\n    }\r\n    async establishConnection_() {\r\n        if (this.shouldReconnect_()) {\r\n            this.log_('Making a connection attempt');\r\n            this.lastConnectionAttemptTime_ = new Date().getTime();\r\n            this.lastConnectionEstablishedTime_ = null;\r\n            const onDataMessage = this.onDataMessage_.bind(this);\r\n            const onReady = this.onReady_.bind(this);\r\n            const onDisconnect = this.onRealtimeDisconnect_.bind(this);\r\n            const connId = this.id + ':' + PersistentConnection.nextConnectionId_++;\r\n            const lastSessionId = this.lastSessionId;\r\n            let canceled = false;\r\n            let connection = null;\r\n            const closeFn = function () {\r\n                if (connection) {\r\n                    connection.close();\r\n                }\r\n                else {\r\n                    canceled = true;\r\n                    onDisconnect();\r\n                }\r\n            };\r\n            const sendRequestFn = function (msg) {\r\n                assert(connection, \"sendRequest call when we're not connected not allowed.\");\r\n                connection.sendRequest(msg);\r\n            };\r\n            this.realtime_ = {\r\n                close: closeFn,\r\n                sendRequest: sendRequestFn\r\n            };\r\n            const forceRefresh = this.forceTokenRefresh_;\r\n            this.forceTokenRefresh_ = false;\r\n            try {\r\n                // First fetch auth and app check token, and establish connection after\r\n                // fetching the token was successful\r\n                const [authToken, appCheckToken] = await Promise.all([\r\n                    this.authTokenProvider_.getToken(forceRefresh),\r\n                    this.appCheckTokenProvider_.getToken(forceRefresh)\r\n                ]);\r\n                if (!canceled) {\r\n                    log('getToken() completed. Creating connection.');\r\n                    this.authToken_ = authToken && authToken.accessToken;\r\n                    this.appCheckToken_ = appCheckToken && appCheckToken.token;\r\n                    connection = new Connection(connId, this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, onDataMessage, onReady, onDisconnect, \r\n                    /* onKill= */ reason => {\r\n                        warn(reason + ' (' + this.repoInfo_.toString() + ')');\r\n                        this.interrupt(SERVER_KILL_INTERRUPT_REASON);\r\n                    }, lastSessionId);\r\n                }\r\n                else {\r\n                    log('getToken() completed but was canceled');\r\n                }\r\n            }\r\n            catch (error) {\r\n                this.log_('Failed to get token: ' + error);\r\n                if (!canceled) {\r\n                    if (this.repoInfo_.nodeAdmin) {\r\n                        // This may be a critical error for the Admin Node.js SDK, so log a warning.\r\n                        // But getToken() may also just have temporarily failed, so we still want to\r\n                        // continue retrying.\r\n                        warn(error);\r\n                    }\r\n                    closeFn();\r\n                }\r\n            }\r\n        }\r\n    }\r\n    interrupt(reason) {\r\n        log('Interrupting connection for reason: ' + reason);\r\n        this.interruptReasons_[reason] = true;\r\n        if (this.realtime_) {\r\n            this.realtime_.close();\r\n        }\r\n        else {\r\n            if (this.establishConnectionTimer_) {\r\n                clearTimeout(this.establishConnectionTimer_);\r\n                this.establishConnectionTimer_ = null;\r\n            }\r\n            if (this.connected_) {\r\n                this.onRealtimeDisconnect_();\r\n            }\r\n        }\r\n    }\r\n    resume(reason) {\r\n        log('Resuming connection for reason: ' + reason);\r\n        delete this.interruptReasons_[reason];\r\n        if (isEmpty(this.interruptReasons_)) {\r\n            this.reconnectDelay_ = RECONNECT_MIN_DELAY;\r\n            if (!this.realtime_) {\r\n                this.scheduleConnect_(0);\r\n            }\r\n        }\r\n    }\r\n    handleTimestamp_(timestamp) {\r\n        const delta = timestamp - new Date().getTime();\r\n        this.onServerInfoUpdate_({ serverTimeOffset: delta });\r\n    }\r\n    cancelSentTransactions_() {\r\n        for (let i = 0; i < this.outstandingPuts_.length; i++) {\r\n            const put = this.outstandingPuts_[i];\r\n            if (put && /*hash*/ 'h' in put.request && put.queued) {\r\n                if (put.onComplete) {\r\n                    put.onComplete('disconnect');\r\n                }\r\n                delete this.outstandingPuts_[i];\r\n                this.outstandingPutCount_--;\r\n            }\r\n        }\r\n        // Clean up array occasionally.\r\n        if (this.outstandingPutCount_ === 0) {\r\n            this.outstandingPuts_ = [];\r\n        }\r\n    }\r\n    onListenRevoked_(pathString, query) {\r\n        // Remove the listen and manufacture a \"permission_denied\" error for the failed listen.\r\n        let queryId;\r\n        if (!query) {\r\n            queryId = 'default';\r\n        }\r\n        else {\r\n            queryId = query.map(q => ObjectToUniqueKey(q)).join('$');\r\n        }\r\n        const listen = this.removeListen_(pathString, queryId);\r\n        if (listen && listen.onComplete) {\r\n            listen.onComplete('permission_denied');\r\n        }\r\n    }\r\n    removeListen_(pathString, queryId) {\r\n        const normalizedPathString = new Path(pathString).toString(); // normalize path.\r\n        let listen;\r\n        if (this.listens.has(normalizedPathString)) {\r\n            const map = this.listens.get(normalizedPathString);\r\n            listen = map.get(queryId);\r\n            map.delete(queryId);\r\n            if (map.size === 0) {\r\n                this.listens.delete(normalizedPathString);\r\n            }\r\n        }\r\n        else {\r\n            // all listens for this path has already been removed\r\n            listen = undefined;\r\n        }\r\n        return listen;\r\n    }\r\n    onAuthRevoked_(statusCode, explanation) {\r\n        log('Auth token revoked: ' + statusCode + '/' + explanation);\r\n        this.authToken_ = null;\r\n        this.forceTokenRefresh_ = true;\r\n        this.realtime_.close();\r\n        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {\r\n            // We'll wait a couple times before logging the warning / increasing the\r\n            // retry period since oauth tokens will report as \"invalid\" if they're\r\n            // just expired. Plus there may be transient issues that resolve themselves.\r\n            this.invalidAuthTokenCount_++;\r\n            if (this.invalidAuthTokenCount_ >= INVALID_TOKEN_THRESHOLD) {\r\n                // Set a long reconnect delay because recovery is unlikely\r\n                this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\r\n                // Notify the auth token provider that the token is invalid, which will log\r\n                // a warning\r\n                this.authTokenProvider_.notifyForInvalidToken();\r\n            }\r\n        }\r\n    }\r\n    onAppCheckRevoked_(statusCode, explanation) {\r\n        log('App check token revoked: ' + statusCode + '/' + explanation);\r\n        this.appCheckToken_ = null;\r\n        this.forceTokenRefresh_ = true;\r\n        // Note: We don't close the connection as the developer may not have\r\n        // enforcement enabled. The backend closes connections with enforcements.\r\n        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {\r\n            // We'll wait a couple times before logging the warning / increasing the\r\n            // retry period since oauth tokens will report as \"invalid\" if they're\r\n            // just expired. Plus there may be transient issues that resolve themselves.\r\n            this.invalidAppCheckTokenCount_++;\r\n            if (this.invalidAppCheckTokenCount_ >= INVALID_TOKEN_THRESHOLD) {\r\n                this.appCheckTokenProvider_.notifyForInvalidToken();\r\n            }\r\n        }\r\n    }\r\n    onSecurityDebugPacket_(body) {\r\n        if (this.securityDebugCallback_) {\r\n            this.securityDebugCallback_(body);\r\n        }\r\n        else {\r\n            if ('msg' in body) {\r\n                console.log('FIREBASE: ' + body['msg'].replace('\\n', '\\nFIREBASE: '));\r\n            }\r\n        }\r\n    }\r\n    restoreState_() {\r\n        //Re-authenticate ourselves if we have a credential stored.\r\n        this.tryAuth();\r\n        this.tryAppCheck();\r\n        // Puts depend on having received the corresponding data update from the server before they complete, so we must\r\n        // make sure to send listens before puts.\r\n        for (const queries of this.listens.values()) {\r\n            for (const listenSpec of queries.values()) {\r\n                this.sendListen_(listenSpec);\r\n            }\r\n        }\r\n        for (let i = 0; i < this.outstandingPuts_.length; i++) {\r\n            if (this.outstandingPuts_[i]) {\r\n                this.sendPut_(i);\r\n            }\r\n        }\r\n        while (this.onDisconnectRequestQueue_.length) {\r\n            const request = this.onDisconnectRequestQueue_.shift();\r\n            this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);\r\n        }\r\n        for (let i = 0; i < this.outstandingGets_.length; i++) {\r\n            if (this.outstandingGets_[i]) {\r\n                this.sendGet_(i);\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Sends client stats for first connection\r\n     */\r\n    sendConnectStats_() {\r\n        const stats = {};\r\n        let clientName = 'js';\r\n        if (isNodeSdk()) {\r\n            if (this.repoInfo_.nodeAdmin) {\r\n                clientName = 'admin_node';\r\n            }\r\n            else {\r\n                clientName = 'node';\r\n            }\r\n        }\r\n        stats['sdk.' + clientName + '.' + SDK_VERSION.replace(/\\./g, '-')] = 1;\r\n        if (isMobileCordova()) {\r\n            stats['framework.cordova'] = 1;\r\n        }\r\n        else if (isReactNative()) {\r\n            stats['framework.reactnative'] = 1;\r\n        }\r\n        this.reportStats(stats);\r\n    }\r\n    shouldReconnect_() {\r\n        const online = OnlineMonitor.getInstance().currentlyOnline();\r\n        return isEmpty(this.interruptReasons_) && online;\r\n    }\r\n}\r\nPersistentConnection.nextPersistentConnectionId_ = 0;\r\n/**\r\n * Counter for number of connections created. Mainly used for tagging in the logs\r\n */\r\nPersistentConnection.nextConnectionId_ = 0;\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass NamedNode {\r\n    constructor(name, node) {\r\n        this.name = name;\r\n        this.node = node;\r\n    }\r\n    static Wrap(name, node) {\r\n        return new NamedNode(name, node);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass Index {\r\n    /**\r\n     * @returns A standalone comparison function for\r\n     * this index\r\n     */\r\n    getCompare() {\r\n        return this.compare.bind(this);\r\n    }\r\n    /**\r\n     * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,\r\n     * it's possible that the changes are isolated to parts of the snapshot that are not indexed.\r\n     *\r\n     *\r\n     * @returns True if the portion of the snapshot being indexed changed between oldNode and newNode\r\n     */\r\n    indexedValueChanged(oldNode, newNode) {\r\n        const oldWrapped = new NamedNode(MIN_NAME, oldNode);\r\n        const newWrapped = new NamedNode(MIN_NAME, newNode);\r\n        return this.compare(oldWrapped, newWrapped) !== 0;\r\n    }\r\n    /**\r\n     * @returns a node wrapper that will sort equal to or less than\r\n     * any other node wrapper, using this index\r\n     */\r\n    minPost() {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        return NamedNode.MIN;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet __EMPTY_NODE;\r\nclass KeyIndex extends Index {\r\n    static get __EMPTY_NODE() {\r\n        return __EMPTY_NODE;\r\n    }\r\n    static set __EMPTY_NODE(val) {\r\n        __EMPTY_NODE = val;\r\n    }\r\n    compare(a, b) {\r\n        return nameCompare(a.name, b.name);\r\n    }\r\n    isDefinedOn(node) {\r\n        // We could probably return true here (since every node has a key), but it's never called\r\n        // so just leaving unimplemented for now.\r\n        throw assertionError('KeyIndex.isDefinedOn not expected to be called.');\r\n    }\r\n    indexedValueChanged(oldNode, newNode) {\r\n        return false; // The key for a node never changes.\r\n    }\r\n    minPost() {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        return NamedNode.MIN;\r\n    }\r\n    maxPost() {\r\n        // TODO: This should really be created once and cached in a static property, but\r\n        // NamedNode isn't defined yet, so I can't use it in a static.  Bleh.\r\n        return new NamedNode(MAX_NAME, __EMPTY_NODE);\r\n    }\r\n    makePost(indexValue, name) {\r\n        assert(typeof indexValue === 'string', 'KeyIndex indexValue must always be a string.');\r\n        // We just use empty node, but it'll never be compared, since our comparator only looks at name.\r\n        return new NamedNode(indexValue, __EMPTY_NODE);\r\n    }\r\n    /**\r\n     * @returns String representation for inclusion in a query spec\r\n     */\r\n    toString() {\r\n        return '.key';\r\n    }\r\n}\r\nconst KEY_INDEX = new KeyIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An iterator over an LLRBNode.\r\n */\r\nclass SortedMapIterator {\r\n    /**\r\n     * @param node - Node to iterate.\r\n     * @param isReverse_ - Whether or not to iterate in reverse\r\n     */\r\n    constructor(node, startKey, comparator, isReverse_, resultGenerator_ = null) {\r\n        this.isReverse_ = isReverse_;\r\n        this.resultGenerator_ = resultGenerator_;\r\n        this.nodeStack_ = [];\r\n        let cmp = 1;\r\n        while (!node.isEmpty()) {\r\n            node = node;\r\n            cmp = startKey ? comparator(node.key, startKey) : 1;\r\n            // flip the comparison if we're going in reverse\r\n            if (isReverse_) {\r\n                cmp *= -1;\r\n            }\r\n            if (cmp < 0) {\r\n                // This node is less than our start key. ignore it\r\n                if (this.isReverse_) {\r\n                    node = node.left;\r\n                }\r\n                else {\r\n                    node = node.right;\r\n                }\r\n            }\r\n            else if (cmp === 0) {\r\n                // This node is exactly equal to our start key. Push it on the stack, but stop iterating;\r\n                this.nodeStack_.push(node);\r\n                break;\r\n            }\r\n            else {\r\n                // This node is greater than our start key, add it to the stack and move to the next one\r\n                this.nodeStack_.push(node);\r\n                if (this.isReverse_) {\r\n                    node = node.right;\r\n                }\r\n                else {\r\n                    node = node.left;\r\n                }\r\n            }\r\n        }\r\n    }\r\n    getNext() {\r\n        if (this.nodeStack_.length === 0) {\r\n            return null;\r\n        }\r\n        let node = this.nodeStack_.pop();\r\n        let result;\r\n        if (this.resultGenerator_) {\r\n            result = this.resultGenerator_(node.key, node.value);\r\n        }\r\n        else {\r\n            result = { key: node.key, value: node.value };\r\n        }\r\n        if (this.isReverse_) {\r\n            node = node.left;\r\n            while (!node.isEmpty()) {\r\n                this.nodeStack_.push(node);\r\n                node = node.right;\r\n            }\r\n        }\r\n        else {\r\n            node = node.right;\r\n            while (!node.isEmpty()) {\r\n                this.nodeStack_.push(node);\r\n                node = node.left;\r\n            }\r\n        }\r\n        return result;\r\n    }\r\n    hasNext() {\r\n        return this.nodeStack_.length > 0;\r\n    }\r\n    peek() {\r\n        if (this.nodeStack_.length === 0) {\r\n            return null;\r\n        }\r\n        const node = this.nodeStack_[this.nodeStack_.length - 1];\r\n        if (this.resultGenerator_) {\r\n            return this.resultGenerator_(node.key, node.value);\r\n        }\r\n        else {\r\n            return { key: node.key, value: node.value };\r\n        }\r\n    }\r\n}\r\n/**\r\n * Represents a node in a Left-leaning Red-Black tree.\r\n */\r\nclass LLRBNode {\r\n    /**\r\n     * @param key - Key associated with this node.\r\n     * @param value - Value associated with this node.\r\n     * @param color - Whether this node is red.\r\n     * @param left - Left child.\r\n     * @param right - Right child.\r\n     */\r\n    constructor(key, value, color, left, right) {\r\n        this.key = key;\r\n        this.value = value;\r\n        this.color = color != null ? color : LLRBNode.RED;\r\n        this.left =\r\n            left != null ? left : SortedMap.EMPTY_NODE;\r\n        this.right =\r\n            right != null ? right : SortedMap.EMPTY_NODE;\r\n    }\r\n    /**\r\n     * Returns a copy of the current node, optionally replacing pieces of it.\r\n     *\r\n     * @param key - New key for the node, or null.\r\n     * @param value - New value for the node, or null.\r\n     * @param color - New color for the node, or null.\r\n     * @param left - New left child for the node, or null.\r\n     * @param right - New right child for the node, or null.\r\n     * @returns The node copy.\r\n     */\r\n    copy(key, value, color, left, right) {\r\n        return new LLRBNode(key != null ? key : this.key, value != null ? value : this.value, color != null ? color : this.color, left != null ? left : this.left, right != null ? right : this.right);\r\n    }\r\n    /**\r\n     * @returns The total number of nodes in the tree.\r\n     */\r\n    count() {\r\n        return this.left.count() + 1 + this.right.count();\r\n    }\r\n    /**\r\n     * @returns True if the tree is empty.\r\n     */\r\n    isEmpty() {\r\n        return false;\r\n    }\r\n    /**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param action - Callback function to be called for each\r\n     *   node.  If it returns true, traversal is aborted.\r\n     * @returns The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */\r\n    inorderTraversal(action) {\r\n        return (this.left.inorderTraversal(action) ||\r\n            !!action(this.key, this.value) ||\r\n            this.right.inorderTraversal(action));\r\n    }\r\n    /**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param action - Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @returns True if traversal was aborted.\r\n     */\r\n    reverseTraversal(action) {\r\n        return (this.right.reverseTraversal(action) ||\r\n            action(this.key, this.value) ||\r\n            this.left.reverseTraversal(action));\r\n    }\r\n    /**\r\n     * @returns The minimum node in the tree.\r\n     */\r\n    min_() {\r\n        if (this.left.isEmpty()) {\r\n            return this;\r\n        }\r\n        else {\r\n            return this.left.min_();\r\n        }\r\n    }\r\n    /**\r\n     * @returns The maximum key in the tree.\r\n     */\r\n    minKey() {\r\n        return this.min_().key;\r\n    }\r\n    /**\r\n     * @returns The maximum key in the tree.\r\n     */\r\n    maxKey() {\r\n        if (this.right.isEmpty()) {\r\n            return this.key;\r\n        }\r\n        else {\r\n            return this.right.maxKey();\r\n        }\r\n    }\r\n    /**\r\n     * @param key - Key to insert.\r\n     * @param value - Value to insert.\r\n     * @param comparator - Comparator.\r\n     * @returns New tree, with the key/value added.\r\n     */\r\n    insert(key, value, comparator) {\r\n        let n = this;\r\n        const cmp = comparator(key, n.key);\r\n        if (cmp < 0) {\r\n            n = n.copy(null, null, null, n.left.insert(key, value, comparator), null);\r\n        }\r\n        else if (cmp === 0) {\r\n            n = n.copy(null, value, null, null, null);\r\n        }\r\n        else {\r\n            n = n.copy(null, null, null, null, n.right.insert(key, value, comparator));\r\n        }\r\n        return n.fixUp_();\r\n    }\r\n    /**\r\n     * @returns New tree, with the minimum key removed.\r\n     */\r\n    removeMin_() {\r\n        if (this.left.isEmpty()) {\r\n            return SortedMap.EMPTY_NODE;\r\n        }\r\n        let n = this;\r\n        if (!n.left.isRed_() && !n.left.left.isRed_()) {\r\n            n = n.moveRedLeft_();\r\n        }\r\n        n = n.copy(null, null, null, n.left.removeMin_(), null);\r\n        return n.fixUp_();\r\n    }\r\n    /**\r\n     * @param key - The key of the item to remove.\r\n     * @param comparator - Comparator.\r\n     * @returns New tree, with the specified item removed.\r\n     */\r\n    remove(key, comparator) {\r\n        let n, smallest;\r\n        n = this;\r\n        if (comparator(key, n.key) < 0) {\r\n            if (!n.left.isEmpty() && !n.left.isRed_() && !n.left.left.isRed_()) {\r\n                n = n.moveRedLeft_();\r\n            }\r\n            n = n.copy(null, null, null, n.left.remove(key, comparator), null);\r\n        }\r\n        else {\r\n            if (n.left.isRed_()) {\r\n                n = n.rotateRight_();\r\n            }\r\n            if (!n.right.isEmpty() && !n.right.isRed_() && !n.right.left.isRed_()) {\r\n                n = n.moveRedRight_();\r\n            }\r\n            if (comparator(key, n.key) === 0) {\r\n                if (n.right.isEmpty()) {\r\n                    return SortedMap.EMPTY_NODE;\r\n                }\r\n                else {\r\n                    smallest = n.right.min_();\r\n                    n = n.copy(smallest.key, smallest.value, null, null, n.right.removeMin_());\r\n                }\r\n            }\r\n            n = n.copy(null, null, null, null, n.right.remove(key, comparator));\r\n        }\r\n        return n.fixUp_();\r\n    }\r\n    /**\r\n     * @returns Whether this is a RED node.\r\n     */\r\n    isRed_() {\r\n        return this.color;\r\n    }\r\n    /**\r\n     * @returns New tree after performing any needed rotations.\r\n     */\r\n    fixUp_() {\r\n        let n = this;\r\n        if (n.right.isRed_() && !n.left.isRed_()) {\r\n            n = n.rotateLeft_();\r\n        }\r\n        if (n.left.isRed_() && n.left.left.isRed_()) {\r\n            n = n.rotateRight_();\r\n        }\r\n        if (n.left.isRed_() && n.right.isRed_()) {\r\n            n = n.colorFlip_();\r\n        }\r\n        return n;\r\n    }\r\n    /**\r\n     * @returns New tree, after moveRedLeft.\r\n     */\r\n    moveRedLeft_() {\r\n        let n = this.colorFlip_();\r\n        if (n.right.left.isRed_()) {\r\n            n = n.copy(null, null, null, null, n.right.rotateRight_());\r\n            n = n.rotateLeft_();\r\n            n = n.colorFlip_();\r\n        }\r\n        return n;\r\n    }\r\n    /**\r\n     * @returns New tree, after moveRedRight.\r\n     */\r\n    moveRedRight_() {\r\n        let n = this.colorFlip_();\r\n        if (n.left.left.isRed_()) {\r\n            n = n.rotateRight_();\r\n            n = n.colorFlip_();\r\n        }\r\n        return n;\r\n    }\r\n    /**\r\n     * @returns New tree, after rotateLeft.\r\n     */\r\n    rotateLeft_() {\r\n        const nl = this.copy(null, null, LLRBNode.RED, null, this.right.left);\r\n        return this.right.copy(null, null, this.color, nl, null);\r\n    }\r\n    /**\r\n     * @returns New tree, after rotateRight.\r\n     */\r\n    rotateRight_() {\r\n        const nr = this.copy(null, null, LLRBNode.RED, this.left.right, null);\r\n        return this.left.copy(null, null, this.color, null, nr);\r\n    }\r\n    /**\r\n     * @returns Newt ree, after colorFlip.\r\n     */\r\n    colorFlip_() {\r\n        const left = this.left.copy(null, null, !this.left.color, null, null);\r\n        const right = this.right.copy(null, null, !this.right.color, null, null);\r\n        return this.copy(null, null, !this.color, left, right);\r\n    }\r\n    /**\r\n     * For testing.\r\n     *\r\n     * @returns True if all is well.\r\n     */\r\n    checkMaxDepth_() {\r\n        const blackDepth = this.check_();\r\n        return Math.pow(2.0, blackDepth) <= this.count() + 1;\r\n    }\r\n    check_() {\r\n        if (this.isRed_() && this.left.isRed_()) {\r\n            throw new Error('Red node has red child(' + this.key + ',' + this.value + ')');\r\n        }\r\n        if (this.right.isRed_()) {\r\n            throw new Error('Right child of (' + this.key + ',' + this.value + ') is red');\r\n        }\r\n        const blackDepth = this.left.check_();\r\n        if (blackDepth !== this.right.check_()) {\r\n            throw new Error('Black depths differ');\r\n        }\r\n        else {\r\n            return blackDepth + (this.isRed_() ? 0 : 1);\r\n        }\r\n    }\r\n}\r\nLLRBNode.RED = true;\r\nLLRBNode.BLACK = false;\r\n/**\r\n * Represents an empty node (a leaf node in the Red-Black Tree).\r\n */\r\nclass LLRBEmptyNode {\r\n    /**\r\n     * Returns a copy of the current node.\r\n     *\r\n     * @returns The node copy.\r\n     */\r\n    copy(key, value, color, left, right) {\r\n        return this;\r\n    }\r\n    /**\r\n     * Returns a copy of the tree, with the specified key/value added.\r\n     *\r\n     * @param key - Key to be added.\r\n     * @param value - Value to be added.\r\n     * @param comparator - Comparator.\r\n     * @returns New tree, with item added.\r\n     */\r\n    insert(key, value, comparator) {\r\n        return new LLRBNode(key, value, null);\r\n    }\r\n    /**\r\n     * Returns a copy of the tree, with the specified key removed.\r\n     *\r\n     * @param key - The key to remove.\r\n     * @param comparator - Comparator.\r\n     * @returns New tree, with item removed.\r\n     */\r\n    remove(key, comparator) {\r\n        return this;\r\n    }\r\n    /**\r\n     * @returns The total number of nodes in the tree.\r\n     */\r\n    count() {\r\n        return 0;\r\n    }\r\n    /**\r\n     * @returns True if the tree is empty.\r\n     */\r\n    isEmpty() {\r\n        return true;\r\n    }\r\n    /**\r\n     * Traverses the tree in key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param action - Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @returns True if traversal was aborted.\r\n     */\r\n    inorderTraversal(action) {\r\n        return false;\r\n    }\r\n    /**\r\n     * Traverses the tree in reverse key order and calls the specified action function\r\n     * for each node.\r\n     *\r\n     * @param action - Callback function to be called for each\r\n     * node.  If it returns true, traversal is aborted.\r\n     * @returns True if traversal was aborted.\r\n     */\r\n    reverseTraversal(action) {\r\n        return false;\r\n    }\r\n    minKey() {\r\n        return null;\r\n    }\r\n    maxKey() {\r\n        return null;\r\n    }\r\n    check_() {\r\n        return 0;\r\n    }\r\n    /**\r\n     * @returns Whether this node is red.\r\n     */\r\n    isRed_() {\r\n        return false;\r\n    }\r\n}\r\n/**\r\n * An immutable sorted map implementation, based on a Left-leaning Red-Black\r\n * tree.\r\n */\r\nclass SortedMap {\r\n    /**\r\n     * @param comparator_ - Key comparator.\r\n     * @param root_ - Optional root node for the map.\r\n     */\r\n    constructor(comparator_, root_ = SortedMap.EMPTY_NODE) {\r\n        this.comparator_ = comparator_;\r\n        this.root_ = root_;\r\n    }\r\n    /**\r\n     * Returns a copy of the map, with the specified key/value added or replaced.\r\n     * (TODO: We should perhaps rename this method to 'put')\r\n     *\r\n     * @param key - Key to be added.\r\n     * @param value - Value to be added.\r\n     * @returns New map, with item added.\r\n     */\r\n    insert(key, value) {\r\n        return new SortedMap(this.comparator_, this.root_\r\n            .insert(key, value, this.comparator_)\r\n            .copy(null, null, LLRBNode.BLACK, null, null));\r\n    }\r\n    /**\r\n     * Returns a copy of the map, with the specified key removed.\r\n     *\r\n     * @param key - The key to remove.\r\n     * @returns New map, with item removed.\r\n     */\r\n    remove(key) {\r\n        return new SortedMap(this.comparator_, this.root_\r\n            .remove(key, this.comparator_)\r\n            .copy(null, null, LLRBNode.BLACK, null, null));\r\n    }\r\n    /**\r\n     * Returns the value of the node with the given key, or null.\r\n     *\r\n     * @param key - The key to look up.\r\n     * @returns The value of the node with the given key, or null if the\r\n     * key doesn't exist.\r\n     */\r\n    get(key) {\r\n        let cmp;\r\n        let node = this.root_;\r\n        while (!node.isEmpty()) {\r\n            cmp = this.comparator_(key, node.key);\r\n            if (cmp === 0) {\r\n                return node.value;\r\n            }\r\n            else if (cmp < 0) {\r\n                node = node.left;\r\n            }\r\n            else if (cmp > 0) {\r\n                node = node.right;\r\n            }\r\n        }\r\n        return null;\r\n    }\r\n    /**\r\n     * Returns the key of the item *before* the specified key, or null if key is the first item.\r\n     * @param key - The key to find the predecessor of\r\n     * @returns The predecessor key.\r\n     */\r\n    getPredecessorKey(key) {\r\n        let cmp, node = this.root_, rightParent = null;\r\n        while (!node.isEmpty()) {\r\n            cmp = this.comparator_(key, node.key);\r\n            if (cmp === 0) {\r\n                if (!node.left.isEmpty()) {\r\n                    node = node.left;\r\n                    while (!node.right.isEmpty()) {\r\n                        node = node.right;\r\n                    }\r\n                    return node.key;\r\n                }\r\n                else if (rightParent) {\r\n                    return rightParent.key;\r\n                }\r\n                else {\r\n                    return null; // first item.\r\n                }\r\n            }\r\n            else if (cmp < 0) {\r\n                node = node.left;\r\n            }\r\n            else if (cmp > 0) {\r\n                rightParent = node;\r\n                node = node.right;\r\n            }\r\n        }\r\n        throw new Error('Attempted to find predecessor key for a nonexistent key.  What gives?');\r\n    }\r\n    /**\r\n     * @returns True if the map is empty.\r\n     */\r\n    isEmpty() {\r\n        return this.root_.isEmpty();\r\n    }\r\n    /**\r\n     * @returns The total number of nodes in the map.\r\n     */\r\n    count() {\r\n        return this.root_.count();\r\n    }\r\n    /**\r\n     * @returns The minimum key in the map.\r\n     */\r\n    minKey() {\r\n        return this.root_.minKey();\r\n    }\r\n    /**\r\n     * @returns The maximum key in the map.\r\n     */\r\n    maxKey() {\r\n        return this.root_.maxKey();\r\n    }\r\n    /**\r\n     * Traverses the map in key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param action - Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @returns The first truthy value returned by action, or the last falsey\r\n     *   value returned by action\r\n     */\r\n    inorderTraversal(action) {\r\n        return this.root_.inorderTraversal(action);\r\n    }\r\n    /**\r\n     * Traverses the map in reverse key order and calls the specified action function\r\n     * for each key/value pair.\r\n     *\r\n     * @param action - Callback function to be called\r\n     * for each key/value pair.  If action returns true, traversal is aborted.\r\n     * @returns True if the traversal was aborted.\r\n     */\r\n    reverseTraversal(action) {\r\n        return this.root_.reverseTraversal(action);\r\n    }\r\n    /**\r\n     * Returns an iterator over the SortedMap.\r\n     * @returns The iterator.\r\n     */\r\n    getIterator(resultGenerator) {\r\n        return new SortedMapIterator(this.root_, null, this.comparator_, false, resultGenerator);\r\n    }\r\n    getIteratorFrom(key, resultGenerator) {\r\n        return new SortedMapIterator(this.root_, key, this.comparator_, false, resultGenerator);\r\n    }\r\n    getReverseIteratorFrom(key, resultGenerator) {\r\n        return new SortedMapIterator(this.root_, key, this.comparator_, true, resultGenerator);\r\n    }\r\n    getReverseIterator(resultGenerator) {\r\n        return new SortedMapIterator(this.root_, null, this.comparator_, true, resultGenerator);\r\n    }\r\n}\r\n/**\r\n * Always use the same empty node, to reduce memory.\r\n */\r\nSortedMap.EMPTY_NODE = new LLRBEmptyNode();\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction NAME_ONLY_COMPARATOR(left, right) {\r\n    return nameCompare(left.name, right.name);\r\n}\r\nfunction NAME_COMPARATOR(left, right) {\r\n    return nameCompare(left, right);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet MAX_NODE$2;\r\nfunction setMaxNode$1(val) {\r\n    MAX_NODE$2 = val;\r\n}\r\nconst priorityHashText = function (priority) {\r\n    if (typeof priority === 'number') {\r\n        return 'number:' + doubleToIEEE754String(priority);\r\n    }\r\n    else {\r\n        return 'string:' + priority;\r\n    }\r\n};\r\n/**\r\n * Validates that a priority snapshot Node is valid.\r\n */\r\nconst validatePriorityNode = function (priorityNode) {\r\n    if (priorityNode.isLeafNode()) {\r\n        const val = priorityNode.val();\r\n        assert(typeof val === 'string' ||\r\n            typeof val === 'number' ||\r\n            (typeof val === 'object' && contains(val, '.sv')), 'Priority must be a string or number.');\r\n    }\r\n    else {\r\n        assert(priorityNode === MAX_NODE$2 || priorityNode.isEmpty(), 'priority of unexpected type.');\r\n    }\r\n    // Don't call getPriority() on MAX_NODE to avoid hitting assertion.\r\n    assert(priorityNode === MAX_NODE$2 || priorityNode.getPriority().isEmpty(), \"Priority nodes can't have a priority of their own.\");\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet __childrenNodeConstructor;\r\n/**\r\n * LeafNode is a class for storing leaf nodes in a DataSnapshot.  It\r\n * implements Node and stores the value of the node (a string,\r\n * number, or boolean) accessible via getValue().\r\n */\r\nclass LeafNode {\r\n    /**\r\n     * @param value_ - The value to store in this leaf node. The object type is\r\n     * possible in the event of a deferred value\r\n     * @param priorityNode_ - The priority of this node.\r\n     */\r\n    constructor(value_, priorityNode_ = LeafNode.__childrenNodeConstructor.EMPTY_NODE) {\r\n        this.value_ = value_;\r\n        this.priorityNode_ = priorityNode_;\r\n        this.lazyHash_ = null;\r\n        assert(this.value_ !== undefined && this.value_ !== null, \"LeafNode shouldn't be created with null/undefined value.\");\r\n        validatePriorityNode(this.priorityNode_);\r\n    }\r\n    static set __childrenNodeConstructor(val) {\r\n        __childrenNodeConstructor = val;\r\n    }\r\n    static get __childrenNodeConstructor() {\r\n        return __childrenNodeConstructor;\r\n    }\r\n    /** @inheritDoc */\r\n    isLeafNode() {\r\n        return true;\r\n    }\r\n    /** @inheritDoc */\r\n    getPriority() {\r\n        return this.priorityNode_;\r\n    }\r\n    /** @inheritDoc */\r\n    updatePriority(newPriorityNode) {\r\n        return new LeafNode(this.value_, newPriorityNode);\r\n    }\r\n    /** @inheritDoc */\r\n    getImmediateChild(childName) {\r\n        // Hack to treat priority as a regular child\r\n        if (childName === '.priority') {\r\n            return this.priorityNode_;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    getChild(path) {\r\n        if (pathIsEmpty(path)) {\r\n            return this;\r\n        }\r\n        else if (pathGetFront(path) === '.priority') {\r\n            return this.priorityNode_;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE;\r\n        }\r\n    }\r\n    hasChild() {\r\n        return false;\r\n    }\r\n    /** @inheritDoc */\r\n    getPredecessorChildName(childName, childNode) {\r\n        return null;\r\n    }\r\n    /** @inheritDoc */\r\n    updateImmediateChild(childName, newChildNode) {\r\n        if (childName === '.priority') {\r\n            return this.updatePriority(newChildNode);\r\n        }\r\n        else if (newChildNode.isEmpty() && childName !== '.priority') {\r\n            return this;\r\n        }\r\n        else {\r\n            return LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateImmediateChild(childName, newChildNode).updatePriority(this.priorityNode_);\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    updateChild(path, newChildNode) {\r\n        const front = pathGetFront(path);\r\n        if (front === null) {\r\n            return newChildNode;\r\n        }\r\n        else if (newChildNode.isEmpty() && front !== '.priority') {\r\n            return this;\r\n        }\r\n        else {\r\n            assert(front !== '.priority' || pathGetLength(path) === 1, '.priority must be the last token in a path');\r\n            return this.updateImmediateChild(front, LeafNode.__childrenNodeConstructor.EMPTY_NODE.updateChild(pathPopFront(path), newChildNode));\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    isEmpty() {\r\n        return false;\r\n    }\r\n    /** @inheritDoc */\r\n    numChildren() {\r\n        return 0;\r\n    }\r\n    /** @inheritDoc */\r\n    forEachChild(index, action) {\r\n        return false;\r\n    }\r\n    val(exportFormat) {\r\n        if (exportFormat && !this.getPriority().isEmpty()) {\r\n            return {\r\n                '.value': this.getValue(),\r\n                '.priority': this.getPriority().val()\r\n            };\r\n        }\r\n        else {\r\n            return this.getValue();\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    hash() {\r\n        if (this.lazyHash_ === null) {\r\n            let toHash = '';\r\n            if (!this.priorityNode_.isEmpty()) {\r\n                toHash +=\r\n                    'priority:' +\r\n                        priorityHashText(this.priorityNode_.val()) +\r\n                        ':';\r\n            }\r\n            const type = typeof this.value_;\r\n            toHash += type + ':';\r\n            if (type === 'number') {\r\n                toHash += doubleToIEEE754String(this.value_);\r\n            }\r\n            else {\r\n                toHash += this.value_;\r\n            }\r\n            this.lazyHash_ = sha1(toHash);\r\n        }\r\n        return this.lazyHash_;\r\n    }\r\n    /**\r\n     * Returns the value of the leaf node.\r\n     * @returns The value of the node.\r\n     */\r\n    getValue() {\r\n        return this.value_;\r\n    }\r\n    compareTo(other) {\r\n        if (other === LeafNode.__childrenNodeConstructor.EMPTY_NODE) {\r\n            return 1;\r\n        }\r\n        else if (other instanceof LeafNode.__childrenNodeConstructor) {\r\n            return -1;\r\n        }\r\n        else {\r\n            assert(other.isLeafNode(), 'Unknown node type');\r\n            return this.compareToLeafNode_(other);\r\n        }\r\n    }\r\n    /**\r\n     * Comparison specifically for two leaf nodes\r\n     */\r\n    compareToLeafNode_(otherLeaf) {\r\n        const otherLeafType = typeof otherLeaf.value_;\r\n        const thisLeafType = typeof this.value_;\r\n        const otherIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(otherLeafType);\r\n        const thisIndex = LeafNode.VALUE_TYPE_ORDER.indexOf(thisLeafType);\r\n        assert(otherIndex >= 0, 'Unknown leaf type: ' + otherLeafType);\r\n        assert(thisIndex >= 0, 'Unknown leaf type: ' + thisLeafType);\r\n        if (otherIndex === thisIndex) {\r\n            // Same type, compare values\r\n            if (thisLeafType === 'object') {\r\n                // Deferred value nodes are all equal, but we should also never get to this point...\r\n                return 0;\r\n            }\r\n            else {\r\n                // Note that this works because true > false, all others are number or string comparisons\r\n                if (this.value_ < otherLeaf.value_) {\r\n                    return -1;\r\n                }\r\n                else if (this.value_ === otherLeaf.value_) {\r\n                    return 0;\r\n                }\r\n                else {\r\n                    return 1;\r\n                }\r\n            }\r\n        }\r\n        else {\r\n            return thisIndex - otherIndex;\r\n        }\r\n    }\r\n    withIndex() {\r\n        return this;\r\n    }\r\n    isIndexed() {\r\n        return true;\r\n    }\r\n    equals(other) {\r\n        if (other === this) {\r\n            return true;\r\n        }\r\n        else if (other.isLeafNode()) {\r\n            const otherLeaf = other;\r\n            return (this.value_ === otherLeaf.value_ &&\r\n                this.priorityNode_.equals(otherLeaf.priorityNode_));\r\n        }\r\n        else {\r\n            return false;\r\n        }\r\n    }\r\n}\r\n/**\r\n * The sort order for comparing leaf nodes of different types. If two leaf nodes have\r\n * the same type, the comparison falls back to their value\r\n */\r\nLeafNode.VALUE_TYPE_ORDER = ['object', 'boolean', 'number', 'string'];\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet nodeFromJSON$1;\r\nlet MAX_NODE$1;\r\nfunction setNodeFromJSON(val) {\r\n    nodeFromJSON$1 = val;\r\n}\r\nfunction setMaxNode(val) {\r\n    MAX_NODE$1 = val;\r\n}\r\nclass PriorityIndex extends Index {\r\n    compare(a, b) {\r\n        const aPriority = a.node.getPriority();\r\n        const bPriority = b.node.getPriority();\r\n        const indexCmp = aPriority.compareTo(bPriority);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    }\r\n    isDefinedOn(node) {\r\n        return !node.getPriority().isEmpty();\r\n    }\r\n    indexedValueChanged(oldNode, newNode) {\r\n        return !oldNode.getPriority().equals(newNode.getPriority());\r\n    }\r\n    minPost() {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        return NamedNode.MIN;\r\n    }\r\n    maxPost() {\r\n        return new NamedNode(MAX_NAME, new LeafNode('[PRIORITY-POST]', MAX_NODE$1));\r\n    }\r\n    makePost(indexValue, name) {\r\n        const priorityNode = nodeFromJSON$1(indexValue);\r\n        return new NamedNode(name, new LeafNode('[PRIORITY-POST]', priorityNode));\r\n    }\r\n    /**\r\n     * @returns String representation for inclusion in a query spec\r\n     */\r\n    toString() {\r\n        return '.priority';\r\n    }\r\n}\r\nconst PRIORITY_INDEX = new PriorityIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst LOG_2 = Math.log(2);\r\nclass Base12Num {\r\n    constructor(length) {\r\n        const logBase2 = (num) => \r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        parseInt((Math.log(num) / LOG_2), 10);\r\n        const bitMask = (bits) => parseInt(Array(bits + 1).join('1'), 2);\r\n        this.count = logBase2(length + 1);\r\n        this.current_ = this.count - 1;\r\n        const mask = bitMask(this.count);\r\n        this.bits_ = (length + 1) & mask;\r\n    }\r\n    nextBitIsOne() {\r\n        //noinspection JSBitwiseOperatorUsage\r\n        const result = !(this.bits_ & (0x1 << this.current_));\r\n        this.current_--;\r\n        return result;\r\n    }\r\n}\r\n/**\r\n * Takes a list of child nodes and constructs a SortedSet using the given comparison\r\n * function\r\n *\r\n * Uses the algorithm described in the paper linked here:\r\n * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.1458\r\n *\r\n * @param childList - Unsorted list of children\r\n * @param cmp - The comparison method to be used\r\n * @param keyFn - An optional function to extract K from a node wrapper, if K's\r\n * type is not NamedNode\r\n * @param mapSortFn - An optional override for comparator used by the generated sorted map\r\n */\r\nconst buildChildSet = function (childList, cmp, keyFn, mapSortFn) {\r\n    childList.sort(cmp);\r\n    const buildBalancedTree = function (low, high) {\r\n        const length = high - low;\r\n        let namedNode;\r\n        let key;\r\n        if (length === 0) {\r\n            return null;\r\n        }\r\n        else if (length === 1) {\r\n            namedNode = childList[low];\r\n            key = keyFn ? keyFn(namedNode) : namedNode;\r\n            return new LLRBNode(key, namedNode.node, LLRBNode.BLACK, null, null);\r\n        }\r\n        else {\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            const middle = parseInt((length / 2), 10) + low;\r\n            const left = buildBalancedTree(low, middle);\r\n            const right = buildBalancedTree(middle + 1, high);\r\n            namedNode = childList[middle];\r\n            key = keyFn ? keyFn(namedNode) : namedNode;\r\n            return new LLRBNode(key, namedNode.node, LLRBNode.BLACK, left, right);\r\n        }\r\n    };\r\n    const buildFrom12Array = function (base12) {\r\n        let node = null;\r\n        let root = null;\r\n        let index = childList.length;\r\n        const buildPennant = function (chunkSize, color) {\r\n            const low = index - chunkSize;\r\n            const high = index;\r\n            index -= chunkSize;\r\n            const childTree = buildBalancedTree(low + 1, high);\r\n            const namedNode = childList[low];\r\n            const key = keyFn ? keyFn(namedNode) : namedNode;\r\n            attachPennant(new LLRBNode(key, namedNode.node, color, null, childTree));\r\n        };\r\n        const attachPennant = function (pennant) {\r\n            if (node) {\r\n                node.left = pennant;\r\n                node = pennant;\r\n            }\r\n            else {\r\n                root = pennant;\r\n                node = pennant;\r\n            }\r\n        };\r\n        for (let i = 0; i < base12.count; ++i) {\r\n            const isOne = base12.nextBitIsOne();\r\n            // The number of nodes taken in each slice is 2^(arr.length - (i + 1))\r\n            const chunkSize = Math.pow(2, base12.count - (i + 1));\r\n            if (isOne) {\r\n                buildPennant(chunkSize, LLRBNode.BLACK);\r\n            }\r\n            else {\r\n                // current == 2\r\n                buildPennant(chunkSize, LLRBNode.BLACK);\r\n                buildPennant(chunkSize, LLRBNode.RED);\r\n            }\r\n        }\r\n        return root;\r\n    };\r\n    const base12 = new Base12Num(childList.length);\r\n    const root = buildFrom12Array(base12);\r\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n    return new SortedMap(mapSortFn || cmp, root);\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet _defaultIndexMap;\r\nconst fallbackObject = {};\r\nclass IndexMap {\r\n    constructor(indexes_, indexSet_) {\r\n        this.indexes_ = indexes_;\r\n        this.indexSet_ = indexSet_;\r\n    }\r\n    /**\r\n     * The default IndexMap for nodes without a priority\r\n     */\r\n    static get Default() {\r\n        assert(fallbackObject && PRIORITY_INDEX, 'ChildrenNode.ts has not been loaded');\r\n        _defaultIndexMap =\r\n            _defaultIndexMap ||\r\n                new IndexMap({ '.priority': fallbackObject }, { '.priority': PRIORITY_INDEX });\r\n        return _defaultIndexMap;\r\n    }\r\n    get(indexKey) {\r\n        const sortedMap = safeGet(this.indexes_, indexKey);\r\n        if (!sortedMap) {\r\n            throw new Error('No index defined for ' + indexKey);\r\n        }\r\n        if (sortedMap instanceof SortedMap) {\r\n            return sortedMap;\r\n        }\r\n        else {\r\n            // The index exists, but it falls back to just name comparison. Return null so that the calling code uses the\r\n            // regular child map\r\n            return null;\r\n        }\r\n    }\r\n    hasIndex(indexDefinition) {\r\n        return contains(this.indexSet_, indexDefinition.toString());\r\n    }\r\n    addIndex(indexDefinition, existingChildren) {\r\n        assert(indexDefinition !== KEY_INDEX, \"KeyIndex always exists and isn't meant to be added to the IndexMap.\");\r\n        const childList = [];\r\n        let sawIndexedValue = false;\r\n        const iter = existingChildren.getIterator(NamedNode.Wrap);\r\n        let next = iter.getNext();\r\n        while (next) {\r\n            sawIndexedValue =\r\n                sawIndexedValue || indexDefinition.isDefinedOn(next.node);\r\n            childList.push(next);\r\n            next = iter.getNext();\r\n        }\r\n        let newIndex;\r\n        if (sawIndexedValue) {\r\n            newIndex = buildChildSet(childList, indexDefinition.getCompare());\r\n        }\r\n        else {\r\n            newIndex = fallbackObject;\r\n        }\r\n        const indexName = indexDefinition.toString();\r\n        const newIndexSet = Object.assign({}, this.indexSet_);\r\n        newIndexSet[indexName] = indexDefinition;\r\n        const newIndexes = Object.assign({}, this.indexes_);\r\n        newIndexes[indexName] = newIndex;\r\n        return new IndexMap(newIndexes, newIndexSet);\r\n    }\r\n    /**\r\n     * Ensure that this node is properly tracked in any indexes that we're maintaining\r\n     */\r\n    addToIndexes(namedNode, existingChildren) {\r\n        const newIndexes = map(this.indexes_, (indexedChildren, indexName) => {\r\n            const index = safeGet(this.indexSet_, indexName);\r\n            assert(index, 'Missing index implementation for ' + indexName);\r\n            if (indexedChildren === fallbackObject) {\r\n                // Check to see if we need to index everything\r\n                if (index.isDefinedOn(namedNode.node)) {\r\n                    // We need to build this index\r\n                    const childList = [];\r\n                    const iter = existingChildren.getIterator(NamedNode.Wrap);\r\n                    let next = iter.getNext();\r\n                    while (next) {\r\n                        if (next.name !== namedNode.name) {\r\n                            childList.push(next);\r\n                        }\r\n                        next = iter.getNext();\r\n                    }\r\n                    childList.push(namedNode);\r\n                    return buildChildSet(childList, index.getCompare());\r\n                }\r\n                else {\r\n                    // No change, this remains a fallback\r\n                    return fallbackObject;\r\n                }\r\n            }\r\n            else {\r\n                const existingSnap = existingChildren.get(namedNode.name);\r\n                let newChildren = indexedChildren;\r\n                if (existingSnap) {\r\n                    newChildren = newChildren.remove(new NamedNode(namedNode.name, existingSnap));\r\n                }\r\n                return newChildren.insert(namedNode, namedNode.node);\r\n            }\r\n        });\r\n        return new IndexMap(newIndexes, this.indexSet_);\r\n    }\r\n    /**\r\n     * Create a new IndexMap instance with the given value removed\r\n     */\r\n    removeFromIndexes(namedNode, existingChildren) {\r\n        const newIndexes = map(this.indexes_, (indexedChildren) => {\r\n            if (indexedChildren === fallbackObject) {\r\n                // This is the fallback. Just return it, nothing to do in this case\r\n                return indexedChildren;\r\n            }\r\n            else {\r\n                const existingSnap = existingChildren.get(namedNode.name);\r\n                if (existingSnap) {\r\n                    return indexedChildren.remove(new NamedNode(namedNode.name, existingSnap));\r\n                }\r\n                else {\r\n                    // No record of this child\r\n                    return indexedChildren;\r\n                }\r\n            }\r\n        });\r\n        return new IndexMap(newIndexes, this.indexSet_);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// TODO: For memory savings, don't store priorityNode_ if it's empty.\r\nlet EMPTY_NODE;\r\n/**\r\n * ChildrenNode is a class for storing internal nodes in a DataSnapshot\r\n * (i.e. nodes with children).  It implements Node and stores the\r\n * list of children in the children property, sorted by child name.\r\n */\r\nclass ChildrenNode {\r\n    /**\r\n     * @param children_ - List of children of this node..\r\n     * @param priorityNode_ - The priority of this node (as a snapshot node).\r\n     */\r\n    constructor(children_, priorityNode_, indexMap_) {\r\n        this.children_ = children_;\r\n        this.priorityNode_ = priorityNode_;\r\n        this.indexMap_ = indexMap_;\r\n        this.lazyHash_ = null;\r\n        /**\r\n         * Note: The only reason we allow null priority is for EMPTY_NODE, since we can't use\r\n         * EMPTY_NODE as the priority of EMPTY_NODE.  We might want to consider making EMPTY_NODE its own\r\n         * class instead of an empty ChildrenNode.\r\n         */\r\n        if (this.priorityNode_) {\r\n            validatePriorityNode(this.priorityNode_);\r\n        }\r\n        if (this.children_.isEmpty()) {\r\n            assert(!this.priorityNode_ || this.priorityNode_.isEmpty(), 'An empty node cannot have a priority');\r\n        }\r\n    }\r\n    static get EMPTY_NODE() {\r\n        return (EMPTY_NODE ||\r\n            (EMPTY_NODE = new ChildrenNode(new SortedMap(NAME_COMPARATOR), null, IndexMap.Default)));\r\n    }\r\n    /** @inheritDoc */\r\n    isLeafNode() {\r\n        return false;\r\n    }\r\n    /** @inheritDoc */\r\n    getPriority() {\r\n        return this.priorityNode_ || EMPTY_NODE;\r\n    }\r\n    /** @inheritDoc */\r\n    updatePriority(newPriorityNode) {\r\n        if (this.children_.isEmpty()) {\r\n            // Don't allow priorities on empty nodes\r\n            return this;\r\n        }\r\n        else {\r\n            return new ChildrenNode(this.children_, newPriorityNode, this.indexMap_);\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    getImmediateChild(childName) {\r\n        // Hack to treat priority as a regular child\r\n        if (childName === '.priority') {\r\n            return this.getPriority();\r\n        }\r\n        else {\r\n            const child = this.children_.get(childName);\r\n            return child === null ? EMPTY_NODE : child;\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    getChild(path) {\r\n        const front = pathGetFront(path);\r\n        if (front === null) {\r\n            return this;\r\n        }\r\n        return this.getImmediateChild(front).getChild(pathPopFront(path));\r\n    }\r\n    /** @inheritDoc */\r\n    hasChild(childName) {\r\n        return this.children_.get(childName) !== null;\r\n    }\r\n    /** @inheritDoc */\r\n    updateImmediateChild(childName, newChildNode) {\r\n        assert(newChildNode, 'We should always be passing snapshot nodes');\r\n        if (childName === '.priority') {\r\n            return this.updatePriority(newChildNode);\r\n        }\r\n        else {\r\n            const namedNode = new NamedNode(childName, newChildNode);\r\n            let newChildren, newIndexMap;\r\n            if (newChildNode.isEmpty()) {\r\n                newChildren = this.children_.remove(childName);\r\n                newIndexMap = this.indexMap_.removeFromIndexes(namedNode, this.children_);\r\n            }\r\n            else {\r\n                newChildren = this.children_.insert(childName, newChildNode);\r\n                newIndexMap = this.indexMap_.addToIndexes(namedNode, this.children_);\r\n            }\r\n            const newPriority = newChildren.isEmpty()\r\n                ? EMPTY_NODE\r\n                : this.priorityNode_;\r\n            return new ChildrenNode(newChildren, newPriority, newIndexMap);\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    updateChild(path, newChildNode) {\r\n        const front = pathGetFront(path);\r\n        if (front === null) {\r\n            return newChildNode;\r\n        }\r\n        else {\r\n            assert(pathGetFront(path) !== '.priority' || pathGetLength(path) === 1, '.priority must be the last token in a path');\r\n            const newImmediateChild = this.getImmediateChild(front).updateChild(pathPopFront(path), newChildNode);\r\n            return this.updateImmediateChild(front, newImmediateChild);\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    isEmpty() {\r\n        return this.children_.isEmpty();\r\n    }\r\n    /** @inheritDoc */\r\n    numChildren() {\r\n        return this.children_.count();\r\n    }\r\n    /** @inheritDoc */\r\n    val(exportFormat) {\r\n        if (this.isEmpty()) {\r\n            return null;\r\n        }\r\n        const obj = {};\r\n        let numKeys = 0, maxKey = 0, allIntegerKeys = true;\r\n        this.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n            obj[key] = childNode.val(exportFormat);\r\n            numKeys++;\r\n            if (allIntegerKeys && ChildrenNode.INTEGER_REGEXP_.test(key)) {\r\n                maxKey = Math.max(maxKey, Number(key));\r\n            }\r\n            else {\r\n                allIntegerKeys = false;\r\n            }\r\n        });\r\n        if (!exportFormat && allIntegerKeys && maxKey < 2 * numKeys) {\r\n            // convert to array.\r\n            const array = [];\r\n            // eslint-disable-next-line guard-for-in\r\n            for (const key in obj) {\r\n                array[key] = obj[key];\r\n            }\r\n            return array;\r\n        }\r\n        else {\r\n            if (exportFormat && !this.getPriority().isEmpty()) {\r\n                obj['.priority'] = this.getPriority().val();\r\n            }\r\n            return obj;\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    hash() {\r\n        if (this.lazyHash_ === null) {\r\n            let toHash = '';\r\n            if (!this.getPriority().isEmpty()) {\r\n                toHash +=\r\n                    'priority:' +\r\n                        priorityHashText(this.getPriority().val()) +\r\n                        ':';\r\n            }\r\n            this.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n                const childHash = childNode.hash();\r\n                if (childHash !== '') {\r\n                    toHash += ':' + key + ':' + childHash;\r\n                }\r\n            });\r\n            this.lazyHash_ = toHash === '' ? '' : sha1(toHash);\r\n        }\r\n        return this.lazyHash_;\r\n    }\r\n    /** @inheritDoc */\r\n    getPredecessorChildName(childName, childNode, index) {\r\n        const idx = this.resolveIndex_(index);\r\n        if (idx) {\r\n            const predecessor = idx.getPredecessorKey(new NamedNode(childName, childNode));\r\n            return predecessor ? predecessor.name : null;\r\n        }\r\n        else {\r\n            return this.children_.getPredecessorKey(childName);\r\n        }\r\n    }\r\n    getFirstChildName(indexDefinition) {\r\n        const idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            const minKey = idx.minKey();\r\n            return minKey && minKey.name;\r\n        }\r\n        else {\r\n            return this.children_.minKey();\r\n        }\r\n    }\r\n    getFirstChild(indexDefinition) {\r\n        const minKey = this.getFirstChildName(indexDefinition);\r\n        if (minKey) {\r\n            return new NamedNode(minKey, this.children_.get(minKey));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n    /**\r\n     * Given an index, return the key name of the largest value we have, according to that index\r\n     */\r\n    getLastChildName(indexDefinition) {\r\n        const idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            const maxKey = idx.maxKey();\r\n            return maxKey && maxKey.name;\r\n        }\r\n        else {\r\n            return this.children_.maxKey();\r\n        }\r\n    }\r\n    getLastChild(indexDefinition) {\r\n        const maxKey = this.getLastChildName(indexDefinition);\r\n        if (maxKey) {\r\n            return new NamedNode(maxKey, this.children_.get(maxKey));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n    forEachChild(index, action) {\r\n        const idx = this.resolveIndex_(index);\r\n        if (idx) {\r\n            return idx.inorderTraversal(wrappedNode => {\r\n                return action(wrappedNode.name, wrappedNode.node);\r\n            });\r\n        }\r\n        else {\r\n            return this.children_.inorderTraversal(action);\r\n        }\r\n    }\r\n    getIterator(indexDefinition) {\r\n        return this.getIteratorFrom(indexDefinition.minPost(), indexDefinition);\r\n    }\r\n    getIteratorFrom(startPost, indexDefinition) {\r\n        const idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            return idx.getIteratorFrom(startPost, key => key);\r\n        }\r\n        else {\r\n            const iterator = this.children_.getIteratorFrom(startPost.name, NamedNode.Wrap);\r\n            let next = iterator.peek();\r\n            while (next != null && indexDefinition.compare(next, startPost) < 0) {\r\n                iterator.getNext();\r\n                next = iterator.peek();\r\n            }\r\n            return iterator;\r\n        }\r\n    }\r\n    getReverseIterator(indexDefinition) {\r\n        return this.getReverseIteratorFrom(indexDefinition.maxPost(), indexDefinition);\r\n    }\r\n    getReverseIteratorFrom(endPost, indexDefinition) {\r\n        const idx = this.resolveIndex_(indexDefinition);\r\n        if (idx) {\r\n            return idx.getReverseIteratorFrom(endPost, key => {\r\n                return key;\r\n            });\r\n        }\r\n        else {\r\n            const iterator = this.children_.getReverseIteratorFrom(endPost.name, NamedNode.Wrap);\r\n            let next = iterator.peek();\r\n            while (next != null && indexDefinition.compare(next, endPost) > 0) {\r\n                iterator.getNext();\r\n                next = iterator.peek();\r\n            }\r\n            return iterator;\r\n        }\r\n    }\r\n    compareTo(other) {\r\n        if (this.isEmpty()) {\r\n            if (other.isEmpty()) {\r\n                return 0;\r\n            }\r\n            else {\r\n                return -1;\r\n            }\r\n        }\r\n        else if (other.isLeafNode() || other.isEmpty()) {\r\n            return 1;\r\n        }\r\n        else if (other === MAX_NODE) {\r\n            return -1;\r\n        }\r\n        else {\r\n            // Must be another node with children.\r\n            return 0;\r\n        }\r\n    }\r\n    withIndex(indexDefinition) {\r\n        if (indexDefinition === KEY_INDEX ||\r\n            this.indexMap_.hasIndex(indexDefinition)) {\r\n            return this;\r\n        }\r\n        else {\r\n            const newIndexMap = this.indexMap_.addIndex(indexDefinition, this.children_);\r\n            return new ChildrenNode(this.children_, this.priorityNode_, newIndexMap);\r\n        }\r\n    }\r\n    isIndexed(index) {\r\n        return index === KEY_INDEX || this.indexMap_.hasIndex(index);\r\n    }\r\n    equals(other) {\r\n        if (other === this) {\r\n            return true;\r\n        }\r\n        else if (other.isLeafNode()) {\r\n            return false;\r\n        }\r\n        else {\r\n            const otherChildrenNode = other;\r\n            if (!this.getPriority().equals(otherChildrenNode.getPriority())) {\r\n                return false;\r\n            }\r\n            else if (this.children_.count() === otherChildrenNode.children_.count()) {\r\n                const thisIter = this.getIterator(PRIORITY_INDEX);\r\n                const otherIter = otherChildrenNode.getIterator(PRIORITY_INDEX);\r\n                let thisCurrent = thisIter.getNext();\r\n                let otherCurrent = otherIter.getNext();\r\n                while (thisCurrent && otherCurrent) {\r\n                    if (thisCurrent.name !== otherCurrent.name ||\r\n                        !thisCurrent.node.equals(otherCurrent.node)) {\r\n                        return false;\r\n                    }\r\n                    thisCurrent = thisIter.getNext();\r\n                    otherCurrent = otherIter.getNext();\r\n                }\r\n                return thisCurrent === null && otherCurrent === null;\r\n            }\r\n            else {\r\n                return false;\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used\r\n     * instead.\r\n     *\r\n     */\r\n    resolveIndex_(indexDefinition) {\r\n        if (indexDefinition === KEY_INDEX) {\r\n            return null;\r\n        }\r\n        else {\r\n            return this.indexMap_.get(indexDefinition.toString());\r\n        }\r\n    }\r\n}\r\nChildrenNode.INTEGER_REGEXP_ = /^(0|[1-9]\\d*)$/;\r\nclass MaxNode extends ChildrenNode {\r\n    constructor() {\r\n        super(new SortedMap(NAME_COMPARATOR), ChildrenNode.EMPTY_NODE, IndexMap.Default);\r\n    }\r\n    compareTo(other) {\r\n        if (other === this) {\r\n            return 0;\r\n        }\r\n        else {\r\n            return 1;\r\n        }\r\n    }\r\n    equals(other) {\r\n        // Not that we every compare it, but MAX_NODE is only ever equal to itself\r\n        return other === this;\r\n    }\r\n    getPriority() {\r\n        return this;\r\n    }\r\n    getImmediateChild(childName) {\r\n        return ChildrenNode.EMPTY_NODE;\r\n    }\r\n    isEmpty() {\r\n        return false;\r\n    }\r\n}\r\n/**\r\n * Marker that will sort higher than any other snapshot.\r\n */\r\nconst MAX_NODE = new MaxNode();\r\nObject.defineProperties(NamedNode, {\r\n    MIN: {\r\n        value: new NamedNode(MIN_NAME, ChildrenNode.EMPTY_NODE)\r\n    },\r\n    MAX: {\r\n        value: new NamedNode(MAX_NAME, MAX_NODE)\r\n    }\r\n});\r\n/**\r\n * Reference Extensions\r\n */\r\nKeyIndex.__EMPTY_NODE = ChildrenNode.EMPTY_NODE;\r\nLeafNode.__childrenNodeConstructor = ChildrenNode;\r\nsetMaxNode$1(MAX_NODE);\r\nsetMaxNode(MAX_NODE);\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst USE_HINZE = true;\r\n/**\r\n * Constructs a snapshot node representing the passed JSON and returns it.\r\n * @param json - JSON to create a node for.\r\n * @param priority - Optional priority to use.  This will be ignored if the\r\n * passed JSON contains a .priority property.\r\n */\r\nfunction nodeFromJSON(json, priority = null) {\r\n    if (json === null) {\r\n        return ChildrenNode.EMPTY_NODE;\r\n    }\r\n    if (typeof json === 'object' && '.priority' in json) {\r\n        priority = json['.priority'];\r\n    }\r\n    assert(priority === null ||\r\n        typeof priority === 'string' ||\r\n        typeof priority === 'number' ||\r\n        (typeof priority === 'object' && '.sv' in priority), 'Invalid priority type found: ' + typeof priority);\r\n    if (typeof json === 'object' && '.value' in json && json['.value'] !== null) {\r\n        json = json['.value'];\r\n    }\r\n    // Valid leaf nodes include non-objects or server-value wrapper objects\r\n    if (typeof json !== 'object' || '.sv' in json) {\r\n        const jsonLeaf = json;\r\n        return new LeafNode(jsonLeaf, nodeFromJSON(priority));\r\n    }\r\n    if (!(json instanceof Array) && USE_HINZE) {\r\n        const children = [];\r\n        let childrenHavePriority = false;\r\n        const hinzeJsonObj = json;\r\n        each(hinzeJsonObj, (key, child) => {\r\n            if (key.substring(0, 1) !== '.') {\r\n                // Ignore metadata nodes\r\n                const childNode = nodeFromJSON(child);\r\n                if (!childNode.isEmpty()) {\r\n                    childrenHavePriority =\r\n                        childrenHavePriority || !childNode.getPriority().isEmpty();\r\n                    children.push(new NamedNode(key, childNode));\r\n                }\r\n            }\r\n        });\r\n        if (children.length === 0) {\r\n            return ChildrenNode.EMPTY_NODE;\r\n        }\r\n        const childSet = buildChildSet(children, NAME_ONLY_COMPARATOR, namedNode => namedNode.name, NAME_COMPARATOR);\r\n        if (childrenHavePriority) {\r\n            const sortedChildSet = buildChildSet(children, PRIORITY_INDEX.getCompare());\r\n            return new ChildrenNode(childSet, nodeFromJSON(priority), new IndexMap({ '.priority': sortedChildSet }, { '.priority': PRIORITY_INDEX }));\r\n        }\r\n        else {\r\n            return new ChildrenNode(childSet, nodeFromJSON(priority), IndexMap.Default);\r\n        }\r\n    }\r\n    else {\r\n        let node = ChildrenNode.EMPTY_NODE;\r\n        each(json, (key, childData) => {\r\n            if (contains(json, key)) {\r\n                if (key.substring(0, 1) !== '.') {\r\n                    // ignore metadata nodes.\r\n                    const childNode = nodeFromJSON(childData);\r\n                    if (childNode.isLeafNode() || !childNode.isEmpty()) {\r\n                        node = node.updateImmediateChild(key, childNode);\r\n                    }\r\n                }\r\n            }\r\n        });\r\n        return node.updatePriority(nodeFromJSON(priority));\r\n    }\r\n}\r\nsetNodeFromJSON(nodeFromJSON);\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass PathIndex extends Index {\r\n    constructor(indexPath_) {\r\n        super();\r\n        this.indexPath_ = indexPath_;\r\n        assert(!pathIsEmpty(indexPath_) && pathGetFront(indexPath_) !== '.priority', \"Can't create PathIndex with empty path or .priority key\");\r\n    }\r\n    extractChild(snap) {\r\n        return snap.getChild(this.indexPath_);\r\n    }\r\n    isDefinedOn(node) {\r\n        return !node.getChild(this.indexPath_).isEmpty();\r\n    }\r\n    compare(a, b) {\r\n        const aChild = this.extractChild(a.node);\r\n        const bChild = this.extractChild(b.node);\r\n        const indexCmp = aChild.compareTo(bChild);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    }\r\n    makePost(indexValue, name) {\r\n        const valueNode = nodeFromJSON(indexValue);\r\n        const node = ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, valueNode);\r\n        return new NamedNode(name, node);\r\n    }\r\n    maxPost() {\r\n        const node = ChildrenNode.EMPTY_NODE.updateChild(this.indexPath_, MAX_NODE);\r\n        return new NamedNode(MAX_NAME, node);\r\n    }\r\n    toString() {\r\n        return pathSlice(this.indexPath_, 0).join('/');\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass ValueIndex extends Index {\r\n    compare(a, b) {\r\n        const indexCmp = a.node.compareTo(b.node);\r\n        if (indexCmp === 0) {\r\n            return nameCompare(a.name, b.name);\r\n        }\r\n        else {\r\n            return indexCmp;\r\n        }\r\n    }\r\n    isDefinedOn(node) {\r\n        return true;\r\n    }\r\n    indexedValueChanged(oldNode, newNode) {\r\n        return !oldNode.equals(newNode);\r\n    }\r\n    minPost() {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        return NamedNode.MIN;\r\n    }\r\n    maxPost() {\r\n        // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n        return NamedNode.MAX;\r\n    }\r\n    makePost(indexValue, name) {\r\n        const valueNode = nodeFromJSON(indexValue);\r\n        return new NamedNode(name, valueNode);\r\n    }\r\n    /**\r\n     * @returns String representation for inclusion in a query spec\r\n     */\r\n    toString() {\r\n        return '.value';\r\n    }\r\n}\r\nconst VALUE_INDEX = new ValueIndex();\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Modeled after base64 web-safe chars, but ordered by ASCII.\r\nconst PUSH_CHARS = '-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz';\r\nconst MIN_PUSH_CHAR = '-';\r\nconst MAX_PUSH_CHAR = 'z';\r\nconst MAX_KEY_LEN = 786;\r\n/**\r\n * Fancy ID generator that creates 20-character string identifiers with the\r\n * following properties:\r\n *\r\n * 1. They're based on timestamp so that they sort *after* any existing ids.\r\n * 2. They contain 72-bits of random data after the timestamp so that IDs won't\r\n *    collide with other clients' IDs.\r\n * 3. They sort *lexicographically* (so the timestamp is converted to characters\r\n *    that will sort properly).\r\n * 4. They're monotonically increasing. Even if you generate more than one in\r\n *    the same timestamp, the latter ones will sort after the former ones. We do\r\n *    this by using the previous random bits but \"incrementing\" them by 1 (only\r\n *    in the case of a timestamp collision).\r\n */\r\nconst nextPushId = (function () {\r\n    // Timestamp of last push, used to prevent local collisions if you push twice\r\n    // in one ms.\r\n    let lastPushTime = 0;\r\n    // We generate 72-bits of randomness which get turned into 12 characters and\r\n    // appended to the timestamp to prevent collisions with other clients. We\r\n    // store the last characters we generated because in the event of a collision,\r\n    // we'll use those same characters except \"incremented\" by one.\r\n    const lastRandChars = [];\r\n    return function (now) {\r\n        const duplicateTime = now === lastPushTime;\r\n        lastPushTime = now;\r\n        let i;\r\n        const timeStampChars = new Array(8);\r\n        for (i = 7; i >= 0; i--) {\r\n            timeStampChars[i] = PUSH_CHARS.charAt(now % 64);\r\n            // NOTE: Can't use << here because javascript will convert to int and lose\r\n            // the upper bits.\r\n            now = Math.floor(now / 64);\r\n        }\r\n        assert(now === 0, 'Cannot push at time == 0');\r\n        let id = timeStampChars.join('');\r\n        if (!duplicateTime) {\r\n            for (i = 0; i < 12; i++) {\r\n                lastRandChars[i] = Math.floor(Math.random() * 64);\r\n            }\r\n        }\r\n        else {\r\n            // If the timestamp hasn't changed since last push, use the same random\r\n            // number, except incremented by 1.\r\n            for (i = 11; i >= 0 && lastRandChars[i] === 63; i--) {\r\n                lastRandChars[i] = 0;\r\n            }\r\n            lastRandChars[i]++;\r\n        }\r\n        for (i = 0; i < 12; i++) {\r\n            id += PUSH_CHARS.charAt(lastRandChars[i]);\r\n        }\r\n        assert(id.length === 20, 'nextPushId: Length should be 20.');\r\n        return id;\r\n    };\r\n})();\r\nconst successor = function (key) {\r\n    if (key === '' + INTEGER_32_MAX) {\r\n        // See https://firebase.google.com/docs/database/web/lists-of-data#data-order\r\n        return MIN_PUSH_CHAR;\r\n    }\r\n    const keyAsInt = tryParseInt(key);\r\n    if (keyAsInt != null) {\r\n        return '' + (keyAsInt + 1);\r\n    }\r\n    const next = new Array(key.length);\r\n    for (let i = 0; i < next.length; i++) {\r\n        next[i] = key.charAt(i);\r\n    }\r\n    if (next.length < MAX_KEY_LEN) {\r\n        next.push(MIN_PUSH_CHAR);\r\n        return next.join('');\r\n    }\r\n    let i = next.length - 1;\r\n    while (i >= 0 && next[i] === MAX_PUSH_CHAR) {\r\n        i--;\r\n    }\r\n    // `successor` was called on the largest possible key, so return the\r\n    // MAX_NAME, which sorts larger than all keys.\r\n    if (i === -1) {\r\n        return MAX_NAME;\r\n    }\r\n    const source = next[i];\r\n    const sourcePlusOne = PUSH_CHARS.charAt(PUSH_CHARS.indexOf(source) + 1);\r\n    next[i] = sourcePlusOne;\r\n    return next.slice(0, i + 1).join('');\r\n};\r\n// `key` is assumed to be non-empty.\r\nconst predecessor = function (key) {\r\n    if (key === '' + INTEGER_32_MIN) {\r\n        return MIN_NAME;\r\n    }\r\n    const keyAsInt = tryParseInt(key);\r\n    if (keyAsInt != null) {\r\n        return '' + (keyAsInt - 1);\r\n    }\r\n    const next = new Array(key.length);\r\n    for (let i = 0; i < next.length; i++) {\r\n        next[i] = key.charAt(i);\r\n    }\r\n    // If `key` ends in `MIN_PUSH_CHAR`, the largest key lexicographically\r\n    // smaller than `key`, is `key[0:key.length - 1]`. The next key smaller\r\n    // than that, `predecessor(predecessor(key))`, is\r\n    //\r\n    // `key[0:key.length - 2] + (key[key.length - 1] - 1) + \\\r\n    //   { MAX_PUSH_CHAR repeated MAX_KEY_LEN - (key.length - 1) times }\r\n    //\r\n    // analogous to increment/decrement for base-10 integers.\r\n    //\r\n    // This works because lexigographic comparison works character-by-character,\r\n    // using length as a tie-breaker if one key is a prefix of the other.\r\n    if (next[next.length - 1] === MIN_PUSH_CHAR) {\r\n        if (next.length === 1) {\r\n            // See https://firebase.google.com/docs/database/web/lists-of-data#orderbykey\r\n            return '' + INTEGER_32_MAX;\r\n        }\r\n        delete next[next.length - 1];\r\n        return next.join('');\r\n    }\r\n    // Replace the last character with it's immediate predecessor, and\r\n    // fill the suffix of the key with MAX_PUSH_CHAR. This is the\r\n    // lexicographically largest possible key smaller than `key`.\r\n    next[next.length - 1] = PUSH_CHARS.charAt(PUSH_CHARS.indexOf(next[next.length - 1]) - 1);\r\n    return next.join('') + MAX_PUSH_CHAR.repeat(MAX_KEY_LEN - next.length);\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction changeValue(snapshotNode) {\r\n    return { type: \"value\" /* VALUE */, snapshotNode };\r\n}\r\nfunction changeChildAdded(childName, snapshotNode) {\r\n    return { type: \"child_added\" /* CHILD_ADDED */, snapshotNode, childName };\r\n}\r\nfunction changeChildRemoved(childName, snapshotNode) {\r\n    return { type: \"child_removed\" /* CHILD_REMOVED */, snapshotNode, childName };\r\n}\r\nfunction changeChildChanged(childName, snapshotNode, oldSnap) {\r\n    return {\r\n        type: \"child_changed\" /* CHILD_CHANGED */,\r\n        snapshotNode,\r\n        childName,\r\n        oldSnap\r\n    };\r\n}\r\nfunction changeChildMoved(childName, snapshotNode) {\r\n    return { type: \"child_moved\" /* CHILD_MOVED */, snapshotNode, childName };\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Doesn't really filter nodes but applies an index to the node and keeps track of any changes\r\n */\r\nclass IndexedFilter {\r\n    constructor(index_) {\r\n        this.index_ = index_;\r\n    }\r\n    updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        assert(snap.isIndexed(this.index_), 'A node must be indexed if only a child is updated');\r\n        const oldChild = snap.getImmediateChild(key);\r\n        // Check if anything actually changed.\r\n        if (oldChild.getChild(affectedPath).equals(newChild.getChild(affectedPath))) {\r\n            // There's an edge case where a child can enter or leave the view because affectedPath was set to null.\r\n            // In this case, affectedPath will appear null in both the old and new snapshots.  So we need\r\n            // to avoid treating these cases as \"nothing changed.\"\r\n            if (oldChild.isEmpty() === newChild.isEmpty()) {\r\n                // Nothing changed.\r\n                // This assert should be valid, but it's expensive (can dominate perf testing) so don't actually do it.\r\n                //assert(oldChild.equals(newChild), 'Old and new snapshots should be equal.');\r\n                return snap;\r\n            }\r\n        }\r\n        if (optChangeAccumulator != null) {\r\n            if (newChild.isEmpty()) {\r\n                if (snap.hasChild(key)) {\r\n                    optChangeAccumulator.trackChildChange(changeChildRemoved(key, oldChild));\r\n                }\r\n                else {\r\n                    assert(snap.isLeafNode(), 'A child remove without an old child only makes sense on a leaf node');\r\n                }\r\n            }\r\n            else if (oldChild.isEmpty()) {\r\n                optChangeAccumulator.trackChildChange(changeChildAdded(key, newChild));\r\n            }\r\n            else {\r\n                optChangeAccumulator.trackChildChange(changeChildChanged(key, newChild, oldChild));\r\n            }\r\n        }\r\n        if (snap.isLeafNode() && newChild.isEmpty()) {\r\n            return snap;\r\n        }\r\n        else {\r\n            // Make sure the node is indexed\r\n            return snap.updateImmediateChild(key, newChild).withIndex(this.index_);\r\n        }\r\n    }\r\n    updateFullNode(oldSnap, newSnap, optChangeAccumulator) {\r\n        if (optChangeAccumulator != null) {\r\n            if (!oldSnap.isLeafNode()) {\r\n                oldSnap.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n                    if (!newSnap.hasChild(key)) {\r\n                        optChangeAccumulator.trackChildChange(changeChildRemoved(key, childNode));\r\n                    }\r\n                });\r\n            }\r\n            if (!newSnap.isLeafNode()) {\r\n                newSnap.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n                    if (oldSnap.hasChild(key)) {\r\n                        const oldChild = oldSnap.getImmediateChild(key);\r\n                        if (!oldChild.equals(childNode)) {\r\n                            optChangeAccumulator.trackChildChange(changeChildChanged(key, childNode, oldChild));\r\n                        }\r\n                    }\r\n                    else {\r\n                        optChangeAccumulator.trackChildChange(changeChildAdded(key, childNode));\r\n                    }\r\n                });\r\n            }\r\n        }\r\n        return newSnap.withIndex(this.index_);\r\n    }\r\n    updatePriority(oldSnap, newPriority) {\r\n        if (oldSnap.isEmpty()) {\r\n            return ChildrenNode.EMPTY_NODE;\r\n        }\r\n        else {\r\n            return oldSnap.updatePriority(newPriority);\r\n        }\r\n    }\r\n    filtersNodes() {\r\n        return false;\r\n    }\r\n    getIndexedFilter() {\r\n        return this;\r\n    }\r\n    getIndex() {\r\n        return this.index_;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node\r\n */\r\nclass RangedFilter {\r\n    constructor(params) {\r\n        this.indexedFilter_ = new IndexedFilter(params.getIndex());\r\n        this.index_ = params.getIndex();\r\n        this.startPost_ = RangedFilter.getStartPost_(params);\r\n        this.endPost_ = RangedFilter.getEndPost_(params);\r\n    }\r\n    getStartPost() {\r\n        return this.startPost_;\r\n    }\r\n    getEndPost() {\r\n        return this.endPost_;\r\n    }\r\n    matches(node) {\r\n        return (this.index_.compare(this.getStartPost(), node) <= 0 &&\r\n            this.index_.compare(node, this.getEndPost()) <= 0);\r\n    }\r\n    updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        if (!this.matches(new NamedNode(key, newChild))) {\r\n            newChild = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        return this.indexedFilter_.updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);\r\n    }\r\n    updateFullNode(oldSnap, newSnap, optChangeAccumulator) {\r\n        if (newSnap.isLeafNode()) {\r\n            // Make sure we have a children node with the correct index, not a leaf node;\r\n            newSnap = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        let filtered = newSnap.withIndex(this.index_);\r\n        // Don't support priorities on queries\r\n        filtered = filtered.updatePriority(ChildrenNode.EMPTY_NODE);\r\n        const self = this;\r\n        newSnap.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n            if (!self.matches(new NamedNode(key, childNode))) {\r\n                filtered = filtered.updateImmediateChild(key, ChildrenNode.EMPTY_NODE);\r\n            }\r\n        });\r\n        return this.indexedFilter_.updateFullNode(oldSnap, filtered, optChangeAccumulator);\r\n    }\r\n    updatePriority(oldSnap, newPriority) {\r\n        // Don't support priorities on queries\r\n        return oldSnap;\r\n    }\r\n    filtersNodes() {\r\n        return true;\r\n    }\r\n    getIndexedFilter() {\r\n        return this.indexedFilter_;\r\n    }\r\n    getIndex() {\r\n        return this.index_;\r\n    }\r\n    static getStartPost_(params) {\r\n        if (params.hasStart()) {\r\n            const startName = params.getIndexStartName();\r\n            return params.getIndex().makePost(params.getIndexStartValue(), startName);\r\n        }\r\n        else {\r\n            return params.getIndex().minPost();\r\n        }\r\n    }\r\n    static getEndPost_(params) {\r\n        if (params.hasEnd()) {\r\n            const endName = params.getIndexEndName();\r\n            return params.getIndex().makePost(params.getIndexEndValue(), endName);\r\n        }\r\n        else {\r\n            return params.getIndex().maxPost();\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible\r\n */\r\nclass LimitedFilter {\r\n    constructor(params) {\r\n        this.rangedFilter_ = new RangedFilter(params);\r\n        this.index_ = params.getIndex();\r\n        this.limit_ = params.getLimit();\r\n        this.reverse_ = !params.isViewFromLeft();\r\n    }\r\n    updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator) {\r\n        if (!this.rangedFilter_.matches(new NamedNode(key, newChild))) {\r\n            newChild = ChildrenNode.EMPTY_NODE;\r\n        }\r\n        if (snap.getImmediateChild(key).equals(newChild)) {\r\n            // No change\r\n            return snap;\r\n        }\r\n        else if (snap.numChildren() < this.limit_) {\r\n            return this.rangedFilter_\r\n                .getIndexedFilter()\r\n                .updateChild(snap, key, newChild, affectedPath, source, optChangeAccumulator);\r\n        }\r\n        else {\r\n            return this.fullLimitUpdateChild_(snap, key, newChild, source, optChangeAccumulator);\r\n        }\r\n    }\r\n    updateFullNode(oldSnap, newSnap, optChangeAccumulator) {\r\n        let filtered;\r\n        if (newSnap.isLeafNode() || newSnap.isEmpty()) {\r\n            // Make sure we have a children node with the correct index, not a leaf node;\r\n            filtered = ChildrenNode.EMPTY_NODE.withIndex(this.index_);\r\n        }\r\n        else {\r\n            if (this.limit_ * 2 < newSnap.numChildren() &&\r\n                newSnap.isIndexed(this.index_)) {\r\n                // Easier to build up a snapshot, since what we're given has more than twice the elements we want\r\n                filtered = ChildrenNode.EMPTY_NODE.withIndex(this.index_);\r\n                // anchor to the startPost, endPost, or last element as appropriate\r\n                let iterator;\r\n                if (this.reverse_) {\r\n                    iterator = newSnap.getReverseIteratorFrom(this.rangedFilter_.getEndPost(), this.index_);\r\n                }\r\n                else {\r\n                    iterator = newSnap.getIteratorFrom(this.rangedFilter_.getStartPost(), this.index_);\r\n                }\r\n                let count = 0;\r\n                while (iterator.hasNext() && count < this.limit_) {\r\n                    const next = iterator.getNext();\r\n                    let inRange;\r\n                    if (this.reverse_) {\r\n                        inRange =\r\n                            this.index_.compare(this.rangedFilter_.getStartPost(), next) <= 0;\r\n                    }\r\n                    else {\r\n                        inRange =\r\n                            this.index_.compare(next, this.rangedFilter_.getEndPost()) <= 0;\r\n                    }\r\n                    if (inRange) {\r\n                        filtered = filtered.updateImmediateChild(next.name, next.node);\r\n                        count++;\r\n                    }\r\n                    else {\r\n                        // if we have reached the end post, we cannot keep adding elemments\r\n                        break;\r\n                    }\r\n                }\r\n            }\r\n            else {\r\n                // The snap contains less than twice the limit. Faster to delete from the snap than build up a new one\r\n                filtered = newSnap.withIndex(this.index_);\r\n                // Don't support priorities on queries\r\n                filtered = filtered.updatePriority(ChildrenNode.EMPTY_NODE);\r\n                let startPost;\r\n                let endPost;\r\n                let cmp;\r\n                let iterator;\r\n                if (this.reverse_) {\r\n                    iterator = filtered.getReverseIterator(this.index_);\r\n                    startPost = this.rangedFilter_.getEndPost();\r\n                    endPost = this.rangedFilter_.getStartPost();\r\n                    const indexCompare = this.index_.getCompare();\r\n                    cmp = (a, b) => indexCompare(b, a);\r\n                }\r\n                else {\r\n                    iterator = filtered.getIterator(this.index_);\r\n                    startPost = this.rangedFilter_.getStartPost();\r\n                    endPost = this.rangedFilter_.getEndPost();\r\n                    cmp = this.index_.getCompare();\r\n                }\r\n                let count = 0;\r\n                let foundStartPost = false;\r\n                while (iterator.hasNext()) {\r\n                    const next = iterator.getNext();\r\n                    if (!foundStartPost && cmp(startPost, next) <= 0) {\r\n                        // start adding\r\n                        foundStartPost = true;\r\n                    }\r\n                    const inRange = foundStartPost && count < this.limit_ && cmp(next, endPost) <= 0;\r\n                    if (inRange) {\r\n                        count++;\r\n                    }\r\n                    else {\r\n                        filtered = filtered.updateImmediateChild(next.name, ChildrenNode.EMPTY_NODE);\r\n                    }\r\n                }\r\n            }\r\n        }\r\n        return this.rangedFilter_\r\n            .getIndexedFilter()\r\n            .updateFullNode(oldSnap, filtered, optChangeAccumulator);\r\n    }\r\n    updatePriority(oldSnap, newPriority) {\r\n        // Don't support priorities on queries\r\n        return oldSnap;\r\n    }\r\n    filtersNodes() {\r\n        return true;\r\n    }\r\n    getIndexedFilter() {\r\n        return this.rangedFilter_.getIndexedFilter();\r\n    }\r\n    getIndex() {\r\n        return this.index_;\r\n    }\r\n    fullLimitUpdateChild_(snap, childKey, childSnap, source, changeAccumulator) {\r\n        // TODO: rename all cache stuff etc to general snap terminology\r\n        let cmp;\r\n        if (this.reverse_) {\r\n            const indexCmp = this.index_.getCompare();\r\n            cmp = (a, b) => indexCmp(b, a);\r\n        }\r\n        else {\r\n            cmp = this.index_.getCompare();\r\n        }\r\n        const oldEventCache = snap;\r\n        assert(oldEventCache.numChildren() === this.limit_, '');\r\n        const newChildNamedNode = new NamedNode(childKey, childSnap);\r\n        const windowBoundary = this.reverse_\r\n            ? oldEventCache.getFirstChild(this.index_)\r\n            : oldEventCache.getLastChild(this.index_);\r\n        const inRange = this.rangedFilter_.matches(newChildNamedNode);\r\n        if (oldEventCache.hasChild(childKey)) {\r\n            const oldChildSnap = oldEventCache.getImmediateChild(childKey);\r\n            let nextChild = source.getChildAfterChild(this.index_, windowBoundary, this.reverse_);\r\n            while (nextChild != null &&\r\n                (nextChild.name === childKey || oldEventCache.hasChild(nextChild.name))) {\r\n                // There is a weird edge case where a node is updated as part of a merge in the write tree, but hasn't\r\n                // been applied to the limited filter yet. Ignore this next child which will be updated later in\r\n                // the limited filter...\r\n                nextChild = source.getChildAfterChild(this.index_, nextChild, this.reverse_);\r\n            }\r\n            const compareNext = nextChild == null ? 1 : cmp(nextChild, newChildNamedNode);\r\n            const remainsInWindow = inRange && !childSnap.isEmpty() && compareNext >= 0;\r\n            if (remainsInWindow) {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(changeChildChanged(childKey, childSnap, oldChildSnap));\r\n                }\r\n                return oldEventCache.updateImmediateChild(childKey, childSnap);\r\n            }\r\n            else {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(changeChildRemoved(childKey, oldChildSnap));\r\n                }\r\n                const newEventCache = oldEventCache.updateImmediateChild(childKey, ChildrenNode.EMPTY_NODE);\r\n                const nextChildInRange = nextChild != null && this.rangedFilter_.matches(nextChild);\r\n                if (nextChildInRange) {\r\n                    if (changeAccumulator != null) {\r\n                        changeAccumulator.trackChildChange(changeChildAdded(nextChild.name, nextChild.node));\r\n                    }\r\n                    return newEventCache.updateImmediateChild(nextChild.name, nextChild.node);\r\n                }\r\n                else {\r\n                    return newEventCache;\r\n                }\r\n            }\r\n        }\r\n        else if (childSnap.isEmpty()) {\r\n            // we're deleting a node, but it was not in the window, so ignore it\r\n            return snap;\r\n        }\r\n        else if (inRange) {\r\n            if (cmp(windowBoundary, newChildNamedNode) >= 0) {\r\n                if (changeAccumulator != null) {\r\n                    changeAccumulator.trackChildChange(changeChildRemoved(windowBoundary.name, windowBoundary.node));\r\n                    changeAccumulator.trackChildChange(changeChildAdded(childKey, childSnap));\r\n                }\r\n                return oldEventCache\r\n                    .updateImmediateChild(childKey, childSnap)\r\n                    .updateImmediateChild(windowBoundary.name, ChildrenNode.EMPTY_NODE);\r\n            }\r\n            else {\r\n                return snap;\r\n            }\r\n        }\r\n        else {\r\n            return snap;\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class is an immutable-from-the-public-api struct containing a set of query parameters defining a\r\n * range to be returned for a particular location. It is assumed that validation of parameters is done at the\r\n * user-facing API level, so it is not done here.\r\n *\r\n * @internal\r\n */\r\nclass QueryParams {\r\n    constructor() {\r\n        this.limitSet_ = false;\r\n        this.startSet_ = false;\r\n        this.startNameSet_ = false;\r\n        this.startAfterSet_ = false;\r\n        this.endSet_ = false;\r\n        this.endNameSet_ = false;\r\n        this.endBeforeSet_ = false;\r\n        this.limit_ = 0;\r\n        this.viewFrom_ = '';\r\n        this.indexStartValue_ = null;\r\n        this.indexStartName_ = '';\r\n        this.indexEndValue_ = null;\r\n        this.indexEndName_ = '';\r\n        this.index_ = PRIORITY_INDEX;\r\n    }\r\n    hasStart() {\r\n        return this.startSet_;\r\n    }\r\n    hasStartAfter() {\r\n        return this.startAfterSet_;\r\n    }\r\n    hasEndBefore() {\r\n        return this.endBeforeSet_;\r\n    }\r\n    /**\r\n     * @returns True if it would return from left.\r\n     */\r\n    isViewFromLeft() {\r\n        if (this.viewFrom_ === '') {\r\n            // limit(), rather than limitToFirst or limitToLast was called.\r\n            // This means that only one of startSet_ and endSet_ is true. Use them\r\n            // to calculate which side of the view to anchor to. If neither is set,\r\n            // anchor to the end.\r\n            return this.startSet_;\r\n        }\r\n        else {\r\n            return this.viewFrom_ === \"l\" /* VIEW_FROM_LEFT */;\r\n        }\r\n    }\r\n    /**\r\n     * Only valid to call if hasStart() returns true\r\n     */\r\n    getIndexStartValue() {\r\n        assert(this.startSet_, 'Only valid if start has been set');\r\n        return this.indexStartValue_;\r\n    }\r\n    /**\r\n     * Only valid to call if hasStart() returns true.\r\n     * Returns the starting key name for the range defined by these query parameters\r\n     */\r\n    getIndexStartName() {\r\n        assert(this.startSet_, 'Only valid if start has been set');\r\n        if (this.startNameSet_) {\r\n            return this.indexStartName_;\r\n        }\r\n        else {\r\n            return MIN_NAME;\r\n        }\r\n    }\r\n    hasEnd() {\r\n        return this.endSet_;\r\n    }\r\n    /**\r\n     * Only valid to call if hasEnd() returns true.\r\n     */\r\n    getIndexEndValue() {\r\n        assert(this.endSet_, 'Only valid if end has been set');\r\n        return this.indexEndValue_;\r\n    }\r\n    /**\r\n     * Only valid to call if hasEnd() returns true.\r\n     * Returns the end key name for the range defined by these query parameters\r\n     */\r\n    getIndexEndName() {\r\n        assert(this.endSet_, 'Only valid if end has been set');\r\n        if (this.endNameSet_) {\r\n            return this.indexEndName_;\r\n        }\r\n        else {\r\n            return MAX_NAME;\r\n        }\r\n    }\r\n    hasLimit() {\r\n        return this.limitSet_;\r\n    }\r\n    /**\r\n     * @returns True if a limit has been set and it has been explicitly anchored\r\n     */\r\n    hasAnchoredLimit() {\r\n        return this.limitSet_ && this.viewFrom_ !== '';\r\n    }\r\n    /**\r\n     * Only valid to call if hasLimit() returns true\r\n     */\r\n    getLimit() {\r\n        assert(this.limitSet_, 'Only valid if limit has been set');\r\n        return this.limit_;\r\n    }\r\n    getIndex() {\r\n        return this.index_;\r\n    }\r\n    loadsAllData() {\r\n        return !(this.startSet_ || this.endSet_ || this.limitSet_);\r\n    }\r\n    isDefault() {\r\n        return this.loadsAllData() && this.index_ === PRIORITY_INDEX;\r\n    }\r\n    copy() {\r\n        const copy = new QueryParams();\r\n        copy.limitSet_ = this.limitSet_;\r\n        copy.limit_ = this.limit_;\r\n        copy.startSet_ = this.startSet_;\r\n        copy.indexStartValue_ = this.indexStartValue_;\r\n        copy.startNameSet_ = this.startNameSet_;\r\n        copy.indexStartName_ = this.indexStartName_;\r\n        copy.endSet_ = this.endSet_;\r\n        copy.indexEndValue_ = this.indexEndValue_;\r\n        copy.endNameSet_ = this.endNameSet_;\r\n        copy.indexEndName_ = this.indexEndName_;\r\n        copy.index_ = this.index_;\r\n        copy.viewFrom_ = this.viewFrom_;\r\n        return copy;\r\n    }\r\n}\r\nfunction queryParamsGetNodeFilter(queryParams) {\r\n    if (queryParams.loadsAllData()) {\r\n        return new IndexedFilter(queryParams.getIndex());\r\n    }\r\n    else if (queryParams.hasLimit()) {\r\n        return new LimitedFilter(queryParams);\r\n    }\r\n    else {\r\n        return new RangedFilter(queryParams);\r\n    }\r\n}\r\nfunction queryParamsLimitToFirst(queryParams, newLimit) {\r\n    const newParams = queryParams.copy();\r\n    newParams.limitSet_ = true;\r\n    newParams.limit_ = newLimit;\r\n    newParams.viewFrom_ = \"l\" /* VIEW_FROM_LEFT */;\r\n    return newParams;\r\n}\r\nfunction queryParamsLimitToLast(queryParams, newLimit) {\r\n    const newParams = queryParams.copy();\r\n    newParams.limitSet_ = true;\r\n    newParams.limit_ = newLimit;\r\n    newParams.viewFrom_ = \"r\" /* VIEW_FROM_RIGHT */;\r\n    return newParams;\r\n}\r\nfunction queryParamsStartAt(queryParams, indexValue, key) {\r\n    const newParams = queryParams.copy();\r\n    newParams.startSet_ = true;\r\n    if (indexValue === undefined) {\r\n        indexValue = null;\r\n    }\r\n    newParams.indexStartValue_ = indexValue;\r\n    if (key != null) {\r\n        newParams.startNameSet_ = true;\r\n        newParams.indexStartName_ = key;\r\n    }\r\n    else {\r\n        newParams.startNameSet_ = false;\r\n        newParams.indexStartName_ = '';\r\n    }\r\n    return newParams;\r\n}\r\nfunction queryParamsStartAfter(queryParams, indexValue, key) {\r\n    let params;\r\n    if (queryParams.index_ === KEY_INDEX) {\r\n        if (typeof indexValue === 'string') {\r\n            indexValue = successor(indexValue);\r\n        }\r\n        params = queryParamsStartAt(queryParams, indexValue, key);\r\n    }\r\n    else {\r\n        let childKey;\r\n        if (key == null) {\r\n            childKey = MAX_NAME;\r\n        }\r\n        else {\r\n            childKey = successor(key);\r\n        }\r\n        params = queryParamsStartAt(queryParams, indexValue, childKey);\r\n    }\r\n    params.startAfterSet_ = true;\r\n    return params;\r\n}\r\nfunction queryParamsEndAt(queryParams, indexValue, key) {\r\n    const newParams = queryParams.copy();\r\n    newParams.endSet_ = true;\r\n    if (indexValue === undefined) {\r\n        indexValue = null;\r\n    }\r\n    newParams.indexEndValue_ = indexValue;\r\n    if (key !== undefined) {\r\n        newParams.endNameSet_ = true;\r\n        newParams.indexEndName_ = key;\r\n    }\r\n    else {\r\n        newParams.endNameSet_ = false;\r\n        newParams.indexEndName_ = '';\r\n    }\r\n    return newParams;\r\n}\r\nfunction queryParamsEndBefore(queryParams, indexValue, key) {\r\n    let childKey;\r\n    let params;\r\n    if (queryParams.index_ === KEY_INDEX) {\r\n        if (typeof indexValue === 'string') {\r\n            indexValue = predecessor(indexValue);\r\n        }\r\n        params = queryParamsEndAt(queryParams, indexValue, key);\r\n    }\r\n    else {\r\n        if (key == null) {\r\n            childKey = MIN_NAME;\r\n        }\r\n        else {\r\n            childKey = predecessor(key);\r\n        }\r\n        params = queryParamsEndAt(queryParams, indexValue, childKey);\r\n    }\r\n    params.endBeforeSet_ = true;\r\n    return params;\r\n}\r\nfunction queryParamsOrderBy(queryParams, index) {\r\n    const newParams = queryParams.copy();\r\n    newParams.index_ = index;\r\n    return newParams;\r\n}\r\n/**\r\n * Returns a set of REST query string parameters representing this query.\r\n *\r\n * @returns query string parameters\r\n */\r\nfunction queryParamsToRestQueryStringParameters(queryParams) {\r\n    const qs = {};\r\n    if (queryParams.isDefault()) {\r\n        return qs;\r\n    }\r\n    let orderBy;\r\n    if (queryParams.index_ === PRIORITY_INDEX) {\r\n        orderBy = \"$priority\" /* PRIORITY_INDEX */;\r\n    }\r\n    else if (queryParams.index_ === VALUE_INDEX) {\r\n        orderBy = \"$value\" /* VALUE_INDEX */;\r\n    }\r\n    else if (queryParams.index_ === KEY_INDEX) {\r\n        orderBy = \"$key\" /* KEY_INDEX */;\r\n    }\r\n    else {\r\n        assert(queryParams.index_ instanceof PathIndex, 'Unrecognized index type!');\r\n        orderBy = queryParams.index_.toString();\r\n    }\r\n    qs[\"orderBy\" /* ORDER_BY */] = stringify(orderBy);\r\n    if (queryParams.startSet_) {\r\n        qs[\"startAt\" /* START_AT */] = stringify(queryParams.indexStartValue_);\r\n        if (queryParams.startNameSet_) {\r\n            qs[\"startAt\" /* START_AT */] +=\r\n                ',' + stringify(queryParams.indexStartName_);\r\n        }\r\n    }\r\n    if (queryParams.endSet_) {\r\n        qs[\"endAt\" /* END_AT */] = stringify(queryParams.indexEndValue_);\r\n        if (queryParams.endNameSet_) {\r\n            qs[\"endAt\" /* END_AT */] +=\r\n                ',' + stringify(queryParams.indexEndName_);\r\n        }\r\n    }\r\n    if (queryParams.limitSet_) {\r\n        if (queryParams.isViewFromLeft()) {\r\n            qs[\"limitToFirst\" /* LIMIT_TO_FIRST */] = queryParams.limit_;\r\n        }\r\n        else {\r\n            qs[\"limitToLast\" /* LIMIT_TO_LAST */] = queryParams.limit_;\r\n        }\r\n    }\r\n    return qs;\r\n}\r\nfunction queryParamsGetQueryObject(queryParams) {\r\n    const obj = {};\r\n    if (queryParams.startSet_) {\r\n        obj[\"sp\" /* INDEX_START_VALUE */] =\r\n            queryParams.indexStartValue_;\r\n        if (queryParams.startNameSet_) {\r\n            obj[\"sn\" /* INDEX_START_NAME */] =\r\n                queryParams.indexStartName_;\r\n        }\r\n    }\r\n    if (queryParams.endSet_) {\r\n        obj[\"ep\" /* INDEX_END_VALUE */] = queryParams.indexEndValue_;\r\n        if (queryParams.endNameSet_) {\r\n            obj[\"en\" /* INDEX_END_NAME */] = queryParams.indexEndName_;\r\n        }\r\n    }\r\n    if (queryParams.limitSet_) {\r\n        obj[\"l\" /* LIMIT */] = queryParams.limit_;\r\n        let viewFrom = queryParams.viewFrom_;\r\n        if (viewFrom === '') {\r\n            if (queryParams.isViewFromLeft()) {\r\n                viewFrom = \"l\" /* VIEW_FROM_LEFT */;\r\n            }\r\n            else {\r\n                viewFrom = \"r\" /* VIEW_FROM_RIGHT */;\r\n            }\r\n        }\r\n        obj[\"vf\" /* VIEW_FROM */] = viewFrom;\r\n    }\r\n    // For now, priority index is the default, so we only specify if it's some other index\r\n    if (queryParams.index_ !== PRIORITY_INDEX) {\r\n        obj[\"i\" /* INDEX */] = queryParams.index_.toString();\r\n    }\r\n    return obj;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An implementation of ServerActions that communicates with the server via REST requests.\r\n * This is mostly useful for compatibility with crawlers, where we don't want to spin up a full\r\n * persistent connection (using WebSockets or long-polling)\r\n */\r\nclass ReadonlyRestClient extends ServerActions {\r\n    /**\r\n     * @param repoInfo_ - Data about the namespace we are connecting to\r\n     * @param onDataUpdate_ - A callback for new data from the server\r\n     */\r\n    constructor(repoInfo_, onDataUpdate_, authTokenProvider_, appCheckTokenProvider_) {\r\n        super();\r\n        this.repoInfo_ = repoInfo_;\r\n        this.onDataUpdate_ = onDataUpdate_;\r\n        this.authTokenProvider_ = authTokenProvider_;\r\n        this.appCheckTokenProvider_ = appCheckTokenProvider_;\r\n        /** @private {function(...[*])} */\r\n        this.log_ = logWrapper('p:rest:');\r\n        /**\r\n         * We don't actually need to track listens, except to prevent us calling an onComplete for a listen\r\n         * that's been removed. :-/\r\n         */\r\n        this.listens_ = {};\r\n    }\r\n    reportStats(stats) {\r\n        throw new Error('Method not implemented.');\r\n    }\r\n    static getListenId_(query, tag) {\r\n        if (tag !== undefined) {\r\n            return 'tag$' + tag;\r\n        }\r\n        else {\r\n            assert(query._queryParams.isDefault(), \"should have a tag if it's not a default query.\");\r\n            return query._path.toString();\r\n        }\r\n    }\r\n    /** @inheritDoc */\r\n    listen(query, currentHashFn, tag, onComplete) {\r\n        const pathString = query._path.toString();\r\n        this.log_('Listen called for ' + pathString + ' ' + query._queryIdentifier);\r\n        // Mark this listener so we can tell if it's removed.\r\n        const listenId = ReadonlyRestClient.getListenId_(query, tag);\r\n        const thisListen = {};\r\n        this.listens_[listenId] = thisListen;\r\n        const queryStringParameters = queryParamsToRestQueryStringParameters(query._queryParams);\r\n        this.restRequest_(pathString + '.json', queryStringParameters, (error, result) => {\r\n            let data = result;\r\n            if (error === 404) {\r\n                data = null;\r\n                error = null;\r\n            }\r\n            if (error === null) {\r\n                this.onDataUpdate_(pathString, data, /*isMerge=*/ false, tag);\r\n            }\r\n            if (safeGet(this.listens_, listenId) === thisListen) {\r\n                let status;\r\n                if (!error) {\r\n                    status = 'ok';\r\n                }\r\n                else if (error === 401) {\r\n                    status = 'permission_denied';\r\n                }\r\n                else {\r\n                    status = 'rest_error:' + error;\r\n                }\r\n                onComplete(status, null);\r\n            }\r\n        });\r\n    }\r\n    /** @inheritDoc */\r\n    unlisten(query, tag) {\r\n        const listenId = ReadonlyRestClient.getListenId_(query, tag);\r\n        delete this.listens_[listenId];\r\n    }\r\n    get(query) {\r\n        const queryStringParameters = queryParamsToRestQueryStringParameters(query._queryParams);\r\n        const pathString = query._path.toString();\r\n        const deferred = new Deferred();\r\n        this.restRequest_(pathString + '.json', queryStringParameters, (error, result) => {\r\n            let data = result;\r\n            if (error === 404) {\r\n                data = null;\r\n                error = null;\r\n            }\r\n            if (error === null) {\r\n                this.onDataUpdate_(pathString, data, \r\n                /*isMerge=*/ false, \r\n                /*tag=*/ null);\r\n                deferred.resolve(data);\r\n            }\r\n            else {\r\n                deferred.reject(new Error(data));\r\n            }\r\n        });\r\n        return deferred.promise;\r\n    }\r\n    /** @inheritDoc */\r\n    refreshAuthToken(token) {\r\n        // no-op since we just always call getToken.\r\n    }\r\n    /**\r\n     * Performs a REST request to the given path, with the provided query string parameters,\r\n     * and any auth credentials we have.\r\n     */\r\n    restRequest_(pathString, queryStringParameters = {}, callback) {\r\n        queryStringParameters['format'] = 'export';\r\n        return Promise.all([\r\n            this.authTokenProvider_.getToken(/*forceRefresh=*/ false),\r\n            this.appCheckTokenProvider_.getToken(/*forceRefresh=*/ false)\r\n        ]).then(([authToken, appCheckToken]) => {\r\n            if (authToken && authToken.accessToken) {\r\n                queryStringParameters['auth'] = authToken.accessToken;\r\n            }\r\n            if (appCheckToken && appCheckToken.token) {\r\n                queryStringParameters['ac'] = appCheckToken.token;\r\n            }\r\n            const url = (this.repoInfo_.secure ? 'https://' : 'http://') +\r\n                this.repoInfo_.host +\r\n                pathString +\r\n                '?' +\r\n                'ns=' +\r\n                this.repoInfo_.namespace +\r\n                querystring(queryStringParameters);\r\n            this.log_('Sending REST request for ' + url);\r\n            const xhr = new XMLHttpRequest();\r\n            xhr.onreadystatechange = () => {\r\n                if (callback && xhr.readyState === 4) {\r\n                    this.log_('REST Response for ' + url + ' received. status:', xhr.status, 'response:', xhr.responseText);\r\n                    let res = null;\r\n                    if (xhr.status >= 200 && xhr.status < 300) {\r\n                        try {\r\n                            res = jsonEval(xhr.responseText);\r\n                        }\r\n                        catch (e) {\r\n                            warn('Failed to parse JSON response for ' +\r\n                                url +\r\n                                ': ' +\r\n                                xhr.responseText);\r\n                        }\r\n                        callback(null, res);\r\n                    }\r\n                    else {\r\n                        // 401 and 404 are expected.\r\n                        if (xhr.status !== 401 && xhr.status !== 404) {\r\n                            warn('Got unsuccessful REST response for ' +\r\n                                url +\r\n                                ' Status: ' +\r\n                                xhr.status);\r\n                        }\r\n                        callback(xhr.status);\r\n                    }\r\n                    callback = null;\r\n                }\r\n            };\r\n            xhr.open('GET', url, /*asynchronous=*/ true);\r\n            xhr.send();\r\n        });\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Mutable object which basically just stores a reference to the \"latest\" immutable snapshot.\r\n */\r\nclass SnapshotHolder {\r\n    constructor() {\r\n        this.rootNode_ = ChildrenNode.EMPTY_NODE;\r\n    }\r\n    getNode(path) {\r\n        return this.rootNode_.getChild(path);\r\n    }\r\n    updateSnapshot(path, newSnapshotNode) {\r\n        this.rootNode_ = this.rootNode_.updateChild(path, newSnapshotNode);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction newSparseSnapshotTree() {\r\n    return {\r\n        value: null,\r\n        children: new Map()\r\n    };\r\n}\r\n/**\r\n * Stores the given node at the specified path. If there is already a node\r\n * at a shallower path, it merges the new data into that snapshot node.\r\n *\r\n * @param path - Path to look up snapshot for.\r\n * @param data - The new data, or null.\r\n */\r\nfunction sparseSnapshotTreeRemember(sparseSnapshotTree, path, data) {\r\n    if (pathIsEmpty(path)) {\r\n        sparseSnapshotTree.value = data;\r\n        sparseSnapshotTree.children.clear();\r\n    }\r\n    else if (sparseSnapshotTree.value !== null) {\r\n        sparseSnapshotTree.value = sparseSnapshotTree.value.updateChild(path, data);\r\n    }\r\n    else {\r\n        const childKey = pathGetFront(path);\r\n        if (!sparseSnapshotTree.children.has(childKey)) {\r\n            sparseSnapshotTree.children.set(childKey, newSparseSnapshotTree());\r\n        }\r\n        const child = sparseSnapshotTree.children.get(childKey);\r\n        path = pathPopFront(path);\r\n        sparseSnapshotTreeRemember(child, path, data);\r\n    }\r\n}\r\n/**\r\n * Purge the data at path from the cache.\r\n *\r\n * @param path - Path to look up snapshot for.\r\n * @returns True if this node should now be removed.\r\n */\r\nfunction sparseSnapshotTreeForget(sparseSnapshotTree, path) {\r\n    if (pathIsEmpty(path)) {\r\n        sparseSnapshotTree.value = null;\r\n        sparseSnapshotTree.children.clear();\r\n        return true;\r\n    }\r\n    else {\r\n        if (sparseSnapshotTree.value !== null) {\r\n            if (sparseSnapshotTree.value.isLeafNode()) {\r\n                // We're trying to forget a node that doesn't exist\r\n                return false;\r\n            }\r\n            else {\r\n                const value = sparseSnapshotTree.value;\r\n                sparseSnapshotTree.value = null;\r\n                value.forEachChild(PRIORITY_INDEX, (key, tree) => {\r\n                    sparseSnapshotTreeRemember(sparseSnapshotTree, new Path(key), tree);\r\n                });\r\n                return sparseSnapshotTreeForget(sparseSnapshotTree, path);\r\n            }\r\n        }\r\n        else if (sparseSnapshotTree.children.size > 0) {\r\n            const childKey = pathGetFront(path);\r\n            path = pathPopFront(path);\r\n            if (sparseSnapshotTree.children.has(childKey)) {\r\n                const safeToRemove = sparseSnapshotTreeForget(sparseSnapshotTree.children.get(childKey), path);\r\n                if (safeToRemove) {\r\n                    sparseSnapshotTree.children.delete(childKey);\r\n                }\r\n            }\r\n            return sparseSnapshotTree.children.size === 0;\r\n        }\r\n        else {\r\n            return true;\r\n        }\r\n    }\r\n}\r\n/**\r\n * Recursively iterates through all of the stored tree and calls the\r\n * callback on each one.\r\n *\r\n * @param prefixPath - Path to look up node for.\r\n * @param func - The function to invoke for each tree.\r\n */\r\nfunction sparseSnapshotTreeForEachTree(sparseSnapshotTree, prefixPath, func) {\r\n    if (sparseSnapshotTree.value !== null) {\r\n        func(prefixPath, sparseSnapshotTree.value);\r\n    }\r\n    else {\r\n        sparseSnapshotTreeForEachChild(sparseSnapshotTree, (key, tree) => {\r\n            const path = new Path(prefixPath.toString() + '/' + key);\r\n            sparseSnapshotTreeForEachTree(tree, path, func);\r\n        });\r\n    }\r\n}\r\n/**\r\n * Iterates through each immediate child and triggers the callback.\r\n * Only seems to be used in tests.\r\n *\r\n * @param func - The function to invoke for each child.\r\n */\r\nfunction sparseSnapshotTreeForEachChild(sparseSnapshotTree, func) {\r\n    sparseSnapshotTree.children.forEach((tree, key) => {\r\n        func(key, tree);\r\n    });\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Returns the delta from the previous call to get stats.\r\n *\r\n * @param collection_ - The collection to \"listen\" to.\r\n */\r\nclass StatsListener {\r\n    constructor(collection_) {\r\n        this.collection_ = collection_;\r\n        this.last_ = null;\r\n    }\r\n    get() {\r\n        const newStats = this.collection_.get();\r\n        const delta = Object.assign({}, newStats);\r\n        if (this.last_) {\r\n            each(this.last_, (stat, value) => {\r\n                delta[stat] = delta[stat] - value;\r\n            });\r\n        }\r\n        this.last_ = newStats;\r\n        return delta;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n// Assuming some apps may have a short amount of time on page, and a bulk of firebase operations probably\r\n// happen on page load, we try to report our first set of stats pretty quickly, but we wait at least 10\r\n// seconds to try to ensure the Firebase connection is established / settled.\r\nconst FIRST_STATS_MIN_TIME = 10 * 1000;\r\nconst FIRST_STATS_MAX_TIME = 30 * 1000;\r\n// We'll continue to report stats on average every 5 minutes.\r\nconst REPORT_STATS_INTERVAL = 5 * 60 * 1000;\r\nclass StatsReporter {\r\n    constructor(collection, server_) {\r\n        this.server_ = server_;\r\n        this.statsToReport_ = {};\r\n        this.statsListener_ = new StatsListener(collection);\r\n        const timeout = FIRST_STATS_MIN_TIME +\r\n            (FIRST_STATS_MAX_TIME - FIRST_STATS_MIN_TIME) * Math.random();\r\n        setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(timeout));\r\n    }\r\n    reportStats_() {\r\n        const stats = this.statsListener_.get();\r\n        const reportedStats = {};\r\n        let haveStatsToReport = false;\r\n        each(stats, (stat, value) => {\r\n            if (value > 0 && contains(this.statsToReport_, stat)) {\r\n                reportedStats[stat] = value;\r\n                haveStatsToReport = true;\r\n            }\r\n        });\r\n        if (haveStatsToReport) {\r\n            this.server_.reportStats(reportedStats);\r\n        }\r\n        // queue our next run.\r\n        setTimeoutNonBlocking(this.reportStats_.bind(this), Math.floor(Math.random() * 2 * REPORT_STATS_INTERVAL));\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n *\r\n * @enum\r\n */\r\nvar OperationType;\r\n(function (OperationType) {\r\n    OperationType[OperationType[\"OVERWRITE\"] = 0] = \"OVERWRITE\";\r\n    OperationType[OperationType[\"MERGE\"] = 1] = \"MERGE\";\r\n    OperationType[OperationType[\"ACK_USER_WRITE\"] = 2] = \"ACK_USER_WRITE\";\r\n    OperationType[OperationType[\"LISTEN_COMPLETE\"] = 3] = \"LISTEN_COMPLETE\";\r\n})(OperationType || (OperationType = {}));\r\nfunction newOperationSourceUser() {\r\n    return {\r\n        fromUser: true,\r\n        fromServer: false,\r\n        queryId: null,\r\n        tagged: false\r\n    };\r\n}\r\nfunction newOperationSourceServer() {\r\n    return {\r\n        fromUser: false,\r\n        fromServer: true,\r\n        queryId: null,\r\n        tagged: false\r\n    };\r\n}\r\nfunction newOperationSourceServerTaggedQuery(queryId) {\r\n    return {\r\n        fromUser: false,\r\n        fromServer: true,\r\n        queryId,\r\n        tagged: true\r\n    };\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass AckUserWrite {\r\n    /**\r\n     * @param affectedTree - A tree containing true for each affected path. Affected paths can't overlap.\r\n     */\r\n    constructor(\r\n    /** @inheritDoc */ path, \r\n    /** @inheritDoc */ affectedTree, \r\n    /** @inheritDoc */ revert) {\r\n        this.path = path;\r\n        this.affectedTree = affectedTree;\r\n        this.revert = revert;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.ACK_USER_WRITE;\r\n        /** @inheritDoc */\r\n        this.source = newOperationSourceUser();\r\n    }\r\n    operationForChild(childName) {\r\n        if (!pathIsEmpty(this.path)) {\r\n            assert(pathGetFront(this.path) === childName, 'operationForChild called for unrelated child.');\r\n            return new AckUserWrite(pathPopFront(this.path), this.affectedTree, this.revert);\r\n        }\r\n        else if (this.affectedTree.value != null) {\r\n            assert(this.affectedTree.children.isEmpty(), 'affectedTree should not have overlapping affected paths.');\r\n            // All child locations are affected as well; just return same operation.\r\n            return this;\r\n        }\r\n        else {\r\n            const childTree = this.affectedTree.subtree(new Path(childName));\r\n            return new AckUserWrite(newEmptyPath(), childTree, this.revert);\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass ListenComplete {\r\n    constructor(source, path) {\r\n        this.source = source;\r\n        this.path = path;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.LISTEN_COMPLETE;\r\n    }\r\n    operationForChild(childName) {\r\n        if (pathIsEmpty(this.path)) {\r\n            return new ListenComplete(this.source, newEmptyPath());\r\n        }\r\n        else {\r\n            return new ListenComplete(this.source, pathPopFront(this.path));\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass Overwrite {\r\n    constructor(source, path, snap) {\r\n        this.source = source;\r\n        this.path = path;\r\n        this.snap = snap;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.OVERWRITE;\r\n    }\r\n    operationForChild(childName) {\r\n        if (pathIsEmpty(this.path)) {\r\n            return new Overwrite(this.source, newEmptyPath(), this.snap.getImmediateChild(childName));\r\n        }\r\n        else {\r\n            return new Overwrite(this.source, pathPopFront(this.path), this.snap);\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass Merge {\r\n    constructor(\r\n    /** @inheritDoc */ source, \r\n    /** @inheritDoc */ path, \r\n    /** @inheritDoc */ children) {\r\n        this.source = source;\r\n        this.path = path;\r\n        this.children = children;\r\n        /** @inheritDoc */\r\n        this.type = OperationType.MERGE;\r\n    }\r\n    operationForChild(childName) {\r\n        if (pathIsEmpty(this.path)) {\r\n            const childTree = this.children.subtree(new Path(childName));\r\n            if (childTree.isEmpty()) {\r\n                // This child is unaffected\r\n                return null;\r\n            }\r\n            else if (childTree.value) {\r\n                // We have a snapshot for the child in question.  This becomes an overwrite of the child.\r\n                return new Overwrite(this.source, newEmptyPath(), childTree.value);\r\n            }\r\n            else {\r\n                // This is a merge at a deeper level\r\n                return new Merge(this.source, newEmptyPath(), childTree);\r\n            }\r\n        }\r\n        else {\r\n            assert(pathGetFront(this.path) === childName, \"Can't get a merge for a child not on the path of the operation\");\r\n            return new Merge(this.source, pathPopFront(this.path), this.children);\r\n        }\r\n    }\r\n    toString() {\r\n        return ('Operation(' +\r\n            this.path +\r\n            ': ' +\r\n            this.source.toString() +\r\n            ' merge: ' +\r\n            this.children.toString() +\r\n            ')');\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully\r\n * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g.\r\n * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks\r\n * whether a node potentially had children removed due to a filter.\r\n */\r\nclass CacheNode {\r\n    constructor(node_, fullyInitialized_, filtered_) {\r\n        this.node_ = node_;\r\n        this.fullyInitialized_ = fullyInitialized_;\r\n        this.filtered_ = filtered_;\r\n    }\r\n    /**\r\n     * Returns whether this node was fully initialized with either server data or a complete overwrite by the client\r\n     */\r\n    isFullyInitialized() {\r\n        return this.fullyInitialized_;\r\n    }\r\n    /**\r\n     * Returns whether this node is potentially missing children due to a filter applied to the node\r\n     */\r\n    isFiltered() {\r\n        return this.filtered_;\r\n    }\r\n    isCompleteForPath(path) {\r\n        if (pathIsEmpty(path)) {\r\n            return this.isFullyInitialized() && !this.filtered_;\r\n        }\r\n        const childKey = pathGetFront(path);\r\n        return this.isCompleteForChild(childKey);\r\n    }\r\n    isCompleteForChild(key) {\r\n        return ((this.isFullyInitialized() && !this.filtered_) || this.node_.hasChild(key));\r\n    }\r\n    getNode() {\r\n        return this.node_;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An EventGenerator is used to convert \"raw\" changes (Change) as computed by the\r\n * CacheDiffer into actual events (Event) that can be raised.  See generateEventsForChanges()\r\n * for details.\r\n *\r\n */\r\nclass EventGenerator {\r\n    constructor(query_) {\r\n        this.query_ = query_;\r\n        this.index_ = this.query_._queryParams.getIndex();\r\n    }\r\n}\r\n/**\r\n * Given a set of raw changes (no moved events and prevName not specified yet), and a set of\r\n * EventRegistrations that should be notified of these changes, generate the actual events to be raised.\r\n *\r\n * Notes:\r\n *  - child_moved events will be synthesized at this time for any child_changed events that affect\r\n *    our index.\r\n *  - prevName will be calculated based on the index ordering.\r\n */\r\nfunction eventGeneratorGenerateEventsForChanges(eventGenerator, changes, eventCache, eventRegistrations) {\r\n    const events = [];\r\n    const moves = [];\r\n    changes.forEach(change => {\r\n        if (change.type === \"child_changed\" /* CHILD_CHANGED */ &&\r\n            eventGenerator.index_.indexedValueChanged(change.oldSnap, change.snapshotNode)) {\r\n            moves.push(changeChildMoved(change.childName, change.snapshotNode));\r\n        }\r\n    });\r\n    eventGeneratorGenerateEventsForType(eventGenerator, events, \"child_removed\" /* CHILD_REMOVED */, changes, eventRegistrations, eventCache);\r\n    eventGeneratorGenerateEventsForType(eventGenerator, events, \"child_added\" /* CHILD_ADDED */, changes, eventRegistrations, eventCache);\r\n    eventGeneratorGenerateEventsForType(eventGenerator, events, \"child_moved\" /* CHILD_MOVED */, moves, eventRegistrations, eventCache);\r\n    eventGeneratorGenerateEventsForType(eventGenerator, events, \"child_changed\" /* CHILD_CHANGED */, changes, eventRegistrations, eventCache);\r\n    eventGeneratorGenerateEventsForType(eventGenerator, events, \"value\" /* VALUE */, changes, eventRegistrations, eventCache);\r\n    return events;\r\n}\r\n/**\r\n * Given changes of a single change type, generate the corresponding events.\r\n */\r\nfunction eventGeneratorGenerateEventsForType(eventGenerator, events, eventType, changes, registrations, eventCache) {\r\n    const filteredChanges = changes.filter(change => change.type === eventType);\r\n    filteredChanges.sort((a, b) => eventGeneratorCompareChanges(eventGenerator, a, b));\r\n    filteredChanges.forEach(change => {\r\n        const materializedChange = eventGeneratorMaterializeSingleChange(eventGenerator, change, eventCache);\r\n        registrations.forEach(registration => {\r\n            if (registration.respondsTo(change.type)) {\r\n                events.push(registration.createEvent(materializedChange, eventGenerator.query_));\r\n            }\r\n        });\r\n    });\r\n}\r\nfunction eventGeneratorMaterializeSingleChange(eventGenerator, change, eventCache) {\r\n    if (change.type === 'value' || change.type === 'child_removed') {\r\n        return change;\r\n    }\r\n    else {\r\n        change.prevName = eventCache.getPredecessorChildName(change.childName, change.snapshotNode, eventGenerator.index_);\r\n        return change;\r\n    }\r\n}\r\nfunction eventGeneratorCompareChanges(eventGenerator, a, b) {\r\n    if (a.childName == null || b.childName == null) {\r\n        throw assertionError('Should only compare child_ events.');\r\n    }\r\n    const aWrapped = new NamedNode(a.childName, a.snapshotNode);\r\n    const bWrapped = new NamedNode(b.childName, b.snapshotNode);\r\n    return eventGenerator.index_.compare(aWrapped, bWrapped);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction newViewCache(eventCache, serverCache) {\r\n    return { eventCache, serverCache };\r\n}\r\nfunction viewCacheUpdateEventSnap(viewCache, eventSnap, complete, filtered) {\r\n    return newViewCache(new CacheNode(eventSnap, complete, filtered), viewCache.serverCache);\r\n}\r\nfunction viewCacheUpdateServerSnap(viewCache, serverSnap, complete, filtered) {\r\n    return newViewCache(viewCache.eventCache, new CacheNode(serverSnap, complete, filtered));\r\n}\r\nfunction viewCacheGetCompleteEventSnap(viewCache) {\r\n    return viewCache.eventCache.isFullyInitialized()\r\n        ? viewCache.eventCache.getNode()\r\n        : null;\r\n}\r\nfunction viewCacheGetCompleteServerSnap(viewCache) {\r\n    return viewCache.serverCache.isFullyInitialized()\r\n        ? viewCache.serverCache.getNode()\r\n        : null;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet emptyChildrenSingleton;\r\n/**\r\n * Singleton empty children collection.\r\n *\r\n */\r\nconst EmptyChildren = () => {\r\n    if (!emptyChildrenSingleton) {\r\n        emptyChildrenSingleton = new SortedMap(stringCompare);\r\n    }\r\n    return emptyChildrenSingleton;\r\n};\r\n/**\r\n * A tree with immutable elements.\r\n */\r\nclass ImmutableTree {\r\n    constructor(value, children = EmptyChildren()) {\r\n        this.value = value;\r\n        this.children = children;\r\n    }\r\n    static fromObject(obj) {\r\n        let tree = new ImmutableTree(null);\r\n        each(obj, (childPath, childSnap) => {\r\n            tree = tree.set(new Path(childPath), childSnap);\r\n        });\r\n        return tree;\r\n    }\r\n    /**\r\n     * True if the value is empty and there are no children\r\n     */\r\n    isEmpty() {\r\n        return this.value === null && this.children.isEmpty();\r\n    }\r\n    /**\r\n     * Given a path and predicate, return the first node and the path to that node\r\n     * where the predicate returns true.\r\n     *\r\n     * TODO Do a perf test -- If we're creating a bunch of `{path: value:}`\r\n     * objects on the way back out, it may be better to pass down a pathSoFar obj.\r\n     *\r\n     * @param relativePath - The remainder of the path\r\n     * @param predicate - The predicate to satisfy to return a node\r\n     */\r\n    findRootMostMatchingPathAndValue(relativePath, predicate) {\r\n        if (this.value != null && predicate(this.value)) {\r\n            return { path: newEmptyPath(), value: this.value };\r\n        }\r\n        else {\r\n            if (pathIsEmpty(relativePath)) {\r\n                return null;\r\n            }\r\n            else {\r\n                const front = pathGetFront(relativePath);\r\n                const child = this.children.get(front);\r\n                if (child !== null) {\r\n                    const childExistingPathAndValue = child.findRootMostMatchingPathAndValue(pathPopFront(relativePath), predicate);\r\n                    if (childExistingPathAndValue != null) {\r\n                        const fullPath = pathChild(new Path(front), childExistingPathAndValue.path);\r\n                        return { path: fullPath, value: childExistingPathAndValue.value };\r\n                    }\r\n                    else {\r\n                        return null;\r\n                    }\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Find, if it exists, the shortest subpath of the given path that points a defined\r\n     * value in the tree\r\n     */\r\n    findRootMostValueAndPath(relativePath) {\r\n        return this.findRootMostMatchingPathAndValue(relativePath, () => true);\r\n    }\r\n    /**\r\n     * @returns The subtree at the given path\r\n     */\r\n    subtree(relativePath) {\r\n        if (pathIsEmpty(relativePath)) {\r\n            return this;\r\n        }\r\n        else {\r\n            const front = pathGetFront(relativePath);\r\n            const childTree = this.children.get(front);\r\n            if (childTree !== null) {\r\n                return childTree.subtree(pathPopFront(relativePath));\r\n            }\r\n            else {\r\n                return new ImmutableTree(null);\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Sets a value at the specified path.\r\n     *\r\n     * @param relativePath - Path to set value at.\r\n     * @param toSet - Value to set.\r\n     * @returns Resulting tree.\r\n     */\r\n    set(relativePath, toSet) {\r\n        if (pathIsEmpty(relativePath)) {\r\n            return new ImmutableTree(toSet, this.children);\r\n        }\r\n        else {\r\n            const front = pathGetFront(relativePath);\r\n            const child = this.children.get(front) || new ImmutableTree(null);\r\n            const newChild = child.set(pathPopFront(relativePath), toSet);\r\n            const newChildren = this.children.insert(front, newChild);\r\n            return new ImmutableTree(this.value, newChildren);\r\n        }\r\n    }\r\n    /**\r\n     * Removes the value at the specified path.\r\n     *\r\n     * @param relativePath - Path to value to remove.\r\n     * @returns Resulting tree.\r\n     */\r\n    remove(relativePath) {\r\n        if (pathIsEmpty(relativePath)) {\r\n            if (this.children.isEmpty()) {\r\n                return new ImmutableTree(null);\r\n            }\r\n            else {\r\n                return new ImmutableTree(null, this.children);\r\n            }\r\n        }\r\n        else {\r\n            const front = pathGetFront(relativePath);\r\n            const child = this.children.get(front);\r\n            if (child) {\r\n                const newChild = child.remove(pathPopFront(relativePath));\r\n                let newChildren;\r\n                if (newChild.isEmpty()) {\r\n                    newChildren = this.children.remove(front);\r\n                }\r\n                else {\r\n                    newChildren = this.children.insert(front, newChild);\r\n                }\r\n                if (this.value === null && newChildren.isEmpty()) {\r\n                    return new ImmutableTree(null);\r\n                }\r\n                else {\r\n                    return new ImmutableTree(this.value, newChildren);\r\n                }\r\n            }\r\n            else {\r\n                return this;\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Gets a value from the tree.\r\n     *\r\n     * @param relativePath - Path to get value for.\r\n     * @returns Value at path, or null.\r\n     */\r\n    get(relativePath) {\r\n        if (pathIsEmpty(relativePath)) {\r\n            return this.value;\r\n        }\r\n        else {\r\n            const front = pathGetFront(relativePath);\r\n            const child = this.children.get(front);\r\n            if (child) {\r\n                return child.get(pathPopFront(relativePath));\r\n            }\r\n            else {\r\n                return null;\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Replace the subtree at the specified path with the given new tree.\r\n     *\r\n     * @param relativePath - Path to replace subtree for.\r\n     * @param newTree - New tree.\r\n     * @returns Resulting tree.\r\n     */\r\n    setTree(relativePath, newTree) {\r\n        if (pathIsEmpty(relativePath)) {\r\n            return newTree;\r\n        }\r\n        else {\r\n            const front = pathGetFront(relativePath);\r\n            const child = this.children.get(front) || new ImmutableTree(null);\r\n            const newChild = child.setTree(pathPopFront(relativePath), newTree);\r\n            let newChildren;\r\n            if (newChild.isEmpty()) {\r\n                newChildren = this.children.remove(front);\r\n            }\r\n            else {\r\n                newChildren = this.children.insert(front, newChild);\r\n            }\r\n            return new ImmutableTree(this.value, newChildren);\r\n        }\r\n    }\r\n    /**\r\n     * Performs a depth first fold on this tree. Transforms a tree into a single\r\n     * value, given a function that operates on the path to a node, an optional\r\n     * current value, and a map of child names to folded subtrees\r\n     */\r\n    fold(fn) {\r\n        return this.fold_(newEmptyPath(), fn);\r\n    }\r\n    /**\r\n     * Recursive helper for public-facing fold() method\r\n     */\r\n    fold_(pathSoFar, fn) {\r\n        const accum = {};\r\n        this.children.inorderTraversal((childKey, childTree) => {\r\n            accum[childKey] = childTree.fold_(pathChild(pathSoFar, childKey), fn);\r\n        });\r\n        return fn(pathSoFar, this.value, accum);\r\n    }\r\n    /**\r\n     * Find the first matching value on the given path. Return the result of applying f to it.\r\n     */\r\n    findOnPath(path, f) {\r\n        return this.findOnPath_(path, newEmptyPath(), f);\r\n    }\r\n    findOnPath_(pathToFollow, pathSoFar, f) {\r\n        const result = this.value ? f(pathSoFar, this.value) : false;\r\n        if (result) {\r\n            return result;\r\n        }\r\n        else {\r\n            if (pathIsEmpty(pathToFollow)) {\r\n                return null;\r\n            }\r\n            else {\r\n                const front = pathGetFront(pathToFollow);\r\n                const nextChild = this.children.get(front);\r\n                if (nextChild) {\r\n                    return nextChild.findOnPath_(pathPopFront(pathToFollow), pathChild(pathSoFar, front), f);\r\n                }\r\n                else {\r\n                    return null;\r\n                }\r\n            }\r\n        }\r\n    }\r\n    foreachOnPath(path, f) {\r\n        return this.foreachOnPath_(path, newEmptyPath(), f);\r\n    }\r\n    foreachOnPath_(pathToFollow, currentRelativePath, f) {\r\n        if (pathIsEmpty(pathToFollow)) {\r\n            return this;\r\n        }\r\n        else {\r\n            if (this.value) {\r\n                f(currentRelativePath, this.value);\r\n            }\r\n            const front = pathGetFront(pathToFollow);\r\n            const nextChild = this.children.get(front);\r\n            if (nextChild) {\r\n                return nextChild.foreachOnPath_(pathPopFront(pathToFollow), pathChild(currentRelativePath, front), f);\r\n            }\r\n            else {\r\n                return new ImmutableTree(null);\r\n            }\r\n        }\r\n    }\r\n    /**\r\n     * Calls the given function for each node in the tree that has a value.\r\n     *\r\n     * @param f - A function to be called with the path from the root of the tree to\r\n     * a node, and the value at that node. Called in depth-first order.\r\n     */\r\n    foreach(f) {\r\n        this.foreach_(newEmptyPath(), f);\r\n    }\r\n    foreach_(currentRelativePath, f) {\r\n        this.children.inorderTraversal((childName, childTree) => {\r\n            childTree.foreach_(pathChild(currentRelativePath, childName), f);\r\n        });\r\n        if (this.value) {\r\n            f(currentRelativePath, this.value);\r\n        }\r\n    }\r\n    foreachChild(f) {\r\n        this.children.inorderTraversal((childName, childTree) => {\r\n            if (childTree.value) {\r\n                f(childName, childTree.value);\r\n            }\r\n        });\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This class holds a collection of writes that can be applied to nodes in unison. It abstracts away the logic with\r\n * dealing with priority writes and multiple nested writes. At any given path there is only allowed to be one write\r\n * modifying that path. Any write to an existing path or shadowing an existing path will modify that existing write\r\n * to reflect the write added.\r\n */\r\nclass CompoundWrite {\r\n    constructor(writeTree_) {\r\n        this.writeTree_ = writeTree_;\r\n    }\r\n    static empty() {\r\n        return new CompoundWrite(new ImmutableTree(null));\r\n    }\r\n}\r\nfunction compoundWriteAddWrite(compoundWrite, path, node) {\r\n    if (pathIsEmpty(path)) {\r\n        return new CompoundWrite(new ImmutableTree(node));\r\n    }\r\n    else {\r\n        const rootmost = compoundWrite.writeTree_.findRootMostValueAndPath(path);\r\n        if (rootmost != null) {\r\n            const rootMostPath = rootmost.path;\r\n            let value = rootmost.value;\r\n            const relativePath = newRelativePath(rootMostPath, path);\r\n            value = value.updateChild(relativePath, node);\r\n            return new CompoundWrite(compoundWrite.writeTree_.set(rootMostPath, value));\r\n        }\r\n        else {\r\n            const subtree = new ImmutableTree(node);\r\n            const newWriteTree = compoundWrite.writeTree_.setTree(path, subtree);\r\n            return new CompoundWrite(newWriteTree);\r\n        }\r\n    }\r\n}\r\nfunction compoundWriteAddWrites(compoundWrite, path, updates) {\r\n    let newWrite = compoundWrite;\r\n    each(updates, (childKey, node) => {\r\n        newWrite = compoundWriteAddWrite(newWrite, pathChild(path, childKey), node);\r\n    });\r\n    return newWrite;\r\n}\r\n/**\r\n * Will remove a write at the given path and deeper paths. This will <em>not</em> modify a write at a higher\r\n * location, which must be removed by calling this method with that path.\r\n *\r\n * @param compoundWrite - The CompoundWrite to remove.\r\n * @param path - The path at which a write and all deeper writes should be removed\r\n * @returns The new CompoundWrite with the removed path\r\n */\r\nfunction compoundWriteRemoveWrite(compoundWrite, path) {\r\n    if (pathIsEmpty(path)) {\r\n        return CompoundWrite.empty();\r\n    }\r\n    else {\r\n        const newWriteTree = compoundWrite.writeTree_.setTree(path, new ImmutableTree(null));\r\n        return new CompoundWrite(newWriteTree);\r\n    }\r\n}\r\n/**\r\n * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be\r\n * considered \"complete\".\r\n *\r\n * @param compoundWrite - The CompoundWrite to check.\r\n * @param path - The path to check for\r\n * @returns Whether there is a complete write at that path\r\n */\r\nfunction compoundWriteHasCompleteWrite(compoundWrite, path) {\r\n    return compoundWriteGetCompleteNode(compoundWrite, path) != null;\r\n}\r\n/**\r\n * Returns a node for a path if and only if the node is a \"complete\" overwrite at that path. This will not aggregate\r\n * writes from deeper paths, but will return child nodes from a more shallow path.\r\n *\r\n * @param compoundWrite - The CompoundWrite to get the node from.\r\n * @param path - The path to get a complete write\r\n * @returns The node if complete at that path, or null otherwise.\r\n */\r\nfunction compoundWriteGetCompleteNode(compoundWrite, path) {\r\n    const rootmost = compoundWrite.writeTree_.findRootMostValueAndPath(path);\r\n    if (rootmost != null) {\r\n        return compoundWrite.writeTree_\r\n            .get(rootmost.path)\r\n            .getChild(newRelativePath(rootmost.path, path));\r\n    }\r\n    else {\r\n        return null;\r\n    }\r\n}\r\n/**\r\n * Returns all children that are guaranteed to be a complete overwrite.\r\n *\r\n * @param compoundWrite - The CompoundWrite to get children from.\r\n * @returns A list of all complete children.\r\n */\r\nfunction compoundWriteGetCompleteChildren(compoundWrite) {\r\n    const children = [];\r\n    const node = compoundWrite.writeTree_.value;\r\n    if (node != null) {\r\n        // If it's a leaf node, it has no children; so nothing to do.\r\n        if (!node.isLeafNode()) {\r\n            node.forEachChild(PRIORITY_INDEX, (childName, childNode) => {\r\n                children.push(new NamedNode(childName, childNode));\r\n            });\r\n        }\r\n    }\r\n    else {\r\n        compoundWrite.writeTree_.children.inorderTraversal((childName, childTree) => {\r\n            if (childTree.value != null) {\r\n                children.push(new NamedNode(childName, childTree.value));\r\n            }\r\n        });\r\n    }\r\n    return children;\r\n}\r\nfunction compoundWriteChildCompoundWrite(compoundWrite, path) {\r\n    if (pathIsEmpty(path)) {\r\n        return compoundWrite;\r\n    }\r\n    else {\r\n        const shadowingNode = compoundWriteGetCompleteNode(compoundWrite, path);\r\n        if (shadowingNode != null) {\r\n            return new CompoundWrite(new ImmutableTree(shadowingNode));\r\n        }\r\n        else {\r\n            return new CompoundWrite(compoundWrite.writeTree_.subtree(path));\r\n        }\r\n    }\r\n}\r\n/**\r\n * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.\r\n * @returns Whether this CompoundWrite is empty\r\n */\r\nfunction compoundWriteIsEmpty(compoundWrite) {\r\n    return compoundWrite.writeTree_.isEmpty();\r\n}\r\n/**\r\n * Applies this CompoundWrite to a node. The node is returned with all writes from this CompoundWrite applied to the\r\n * node\r\n * @param node - The node to apply this CompoundWrite to\r\n * @returns The node with all writes applied\r\n */\r\nfunction compoundWriteApply(compoundWrite, node) {\r\n    return applySubtreeWrite(newEmptyPath(), compoundWrite.writeTree_, node);\r\n}\r\nfunction applySubtreeWrite(relativePath, writeTree, node) {\r\n    if (writeTree.value != null) {\r\n        // Since there a write is always a leaf, we're done here\r\n        return node.updateChild(relativePath, writeTree.value);\r\n    }\r\n    else {\r\n        let priorityWrite = null;\r\n        writeTree.children.inorderTraversal((childKey, childTree) => {\r\n            if (childKey === '.priority') {\r\n                // Apply priorities at the end so we don't update priorities for either empty nodes or forget\r\n                // to apply priorities to empty nodes that are later filled\r\n                assert(childTree.value !== null, 'Priority writes must always be leaf nodes');\r\n                priorityWrite = childTree.value;\r\n            }\r\n            else {\r\n                node = applySubtreeWrite(pathChild(relativePath, childKey), childTree, node);\r\n            }\r\n        });\r\n        // If there was a priority write, we only apply it if the node is not empty\r\n        if (!node.getChild(relativePath).isEmpty() && priorityWrite !== null) {\r\n            node = node.updateChild(pathChild(relativePath, '.priority'), priorityWrite);\r\n        }\r\n        return node;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.\r\n *\r\n */\r\nfunction writeTreeChildWrites(writeTree, path) {\r\n    return newWriteTreeRef(path, writeTree);\r\n}\r\n/**\r\n * Record a new overwrite from user code.\r\n *\r\n * @param visible - This is set to false by some transactions. It should be excluded from event caches\r\n */\r\nfunction writeTreeAddOverwrite(writeTree, path, snap, writeId, visible) {\r\n    assert(writeId > writeTree.lastWriteId, 'Stacking an older write on top of newer ones');\r\n    if (visible === undefined) {\r\n        visible = true;\r\n    }\r\n    writeTree.allWrites.push({\r\n        path,\r\n        snap,\r\n        writeId,\r\n        visible\r\n    });\r\n    if (visible) {\r\n        writeTree.visibleWrites = compoundWriteAddWrite(writeTree.visibleWrites, path, snap);\r\n    }\r\n    writeTree.lastWriteId = writeId;\r\n}\r\n/**\r\n * Record a new merge from user code.\r\n */\r\nfunction writeTreeAddMerge(writeTree, path, changedChildren, writeId) {\r\n    assert(writeId > writeTree.lastWriteId, 'Stacking an older merge on top of newer ones');\r\n    writeTree.allWrites.push({\r\n        path,\r\n        children: changedChildren,\r\n        writeId,\r\n        visible: true\r\n    });\r\n    writeTree.visibleWrites = compoundWriteAddWrites(writeTree.visibleWrites, path, changedChildren);\r\n    writeTree.lastWriteId = writeId;\r\n}\r\nfunction writeTreeGetWrite(writeTree, writeId) {\r\n    for (let i = 0; i < writeTree.allWrites.length; i++) {\r\n        const record = writeTree.allWrites[i];\r\n        if (record.writeId === writeId) {\r\n            return record;\r\n        }\r\n    }\r\n    return null;\r\n}\r\n/**\r\n * Remove a write (either an overwrite or merge) that has been successfully acknowledge by the server. Recalculates\r\n * the tree if necessary.  We return true if it may have been visible, meaning views need to reevaluate.\r\n *\r\n * @returns true if the write may have been visible (meaning we'll need to reevaluate / raise\r\n * events as a result).\r\n */\r\nfunction writeTreeRemoveWrite(writeTree, writeId) {\r\n    // Note: disabling this check. It could be a transaction that preempted another transaction, and thus was applied\r\n    // out of order.\r\n    //const validClear = revert || this.allWrites_.length === 0 || writeId <= this.allWrites_[0].writeId;\r\n    //assert(validClear, \"Either we don't have this write, or it's the first one in the queue\");\r\n    const idx = writeTree.allWrites.findIndex(s => {\r\n        return s.writeId === writeId;\r\n    });\r\n    assert(idx >= 0, 'removeWrite called with nonexistent writeId.');\r\n    const writeToRemove = writeTree.allWrites[idx];\r\n    writeTree.allWrites.splice(idx, 1);\r\n    let removedWriteWasVisible = writeToRemove.visible;\r\n    let removedWriteOverlapsWithOtherWrites = false;\r\n    let i = writeTree.allWrites.length - 1;\r\n    while (removedWriteWasVisible && i >= 0) {\r\n        const currentWrite = writeTree.allWrites[i];\r\n        if (currentWrite.visible) {\r\n            if (i >= idx &&\r\n                writeTreeRecordContainsPath_(currentWrite, writeToRemove.path)) {\r\n                // The removed write was completely shadowed by a subsequent write.\r\n                removedWriteWasVisible = false;\r\n            }\r\n            else if (pathContains(writeToRemove.path, currentWrite.path)) {\r\n                // Either we're covering some writes or they're covering part of us (depending on which came first).\r\n                removedWriteOverlapsWithOtherWrites = true;\r\n            }\r\n        }\r\n        i--;\r\n    }\r\n    if (!removedWriteWasVisible) {\r\n        return false;\r\n    }\r\n    else if (removedWriteOverlapsWithOtherWrites) {\r\n        // There's some shadowing going on. Just rebuild the visible writes from scratch.\r\n        writeTreeResetTree_(writeTree);\r\n        return true;\r\n    }\r\n    else {\r\n        // There's no shadowing.  We can safely just remove the write(s) from visibleWrites.\r\n        if (writeToRemove.snap) {\r\n            writeTree.visibleWrites = compoundWriteRemoveWrite(writeTree.visibleWrites, writeToRemove.path);\r\n        }\r\n        else {\r\n            const children = writeToRemove.children;\r\n            each(children, (childName) => {\r\n                writeTree.visibleWrites = compoundWriteRemoveWrite(writeTree.visibleWrites, pathChild(writeToRemove.path, childName));\r\n            });\r\n        }\r\n        return true;\r\n    }\r\n}\r\nfunction writeTreeRecordContainsPath_(writeRecord, path) {\r\n    if (writeRecord.snap) {\r\n        return pathContains(writeRecord.path, path);\r\n    }\r\n    else {\r\n        for (const childName in writeRecord.children) {\r\n            if (writeRecord.children.hasOwnProperty(childName) &&\r\n                pathContains(pathChild(writeRecord.path, childName), path)) {\r\n                return true;\r\n            }\r\n        }\r\n        return false;\r\n    }\r\n}\r\n/**\r\n * Re-layer the writes and merges into a tree so we can efficiently calculate event snapshots\r\n */\r\nfunction writeTreeResetTree_(writeTree) {\r\n    writeTree.visibleWrites = writeTreeLayerTree_(writeTree.allWrites, writeTreeDefaultFilter_, newEmptyPath());\r\n    if (writeTree.allWrites.length > 0) {\r\n        writeTree.lastWriteId =\r\n            writeTree.allWrites[writeTree.allWrites.length - 1].writeId;\r\n    }\r\n    else {\r\n        writeTree.lastWriteId = -1;\r\n    }\r\n}\r\n/**\r\n * The default filter used when constructing the tree. Keep everything that's visible.\r\n */\r\nfunction writeTreeDefaultFilter_(write) {\r\n    return write.visible;\r\n}\r\n/**\r\n * Static method. Given an array of WriteRecords, a filter for which ones to include, and a path, construct the tree of\r\n * event data at that path.\r\n */\r\nfunction writeTreeLayerTree_(writes, filter, treeRoot) {\r\n    let compoundWrite = CompoundWrite.empty();\r\n    for (let i = 0; i < writes.length; ++i) {\r\n        const write = writes[i];\r\n        // Theory, a later set will either:\r\n        // a) abort a relevant transaction, so no need to worry about excluding it from calculating that transaction\r\n        // b) not be relevant to a transaction (separate branch), so again will not affect the data for that transaction\r\n        if (filter(write)) {\r\n            const writePath = write.path;\r\n            let relativePath;\r\n            if (write.snap) {\r\n                if (pathContains(treeRoot, writePath)) {\r\n                    relativePath = newRelativePath(treeRoot, writePath);\r\n                    compoundWrite = compoundWriteAddWrite(compoundWrite, relativePath, write.snap);\r\n                }\r\n                else if (pathContains(writePath, treeRoot)) {\r\n                    relativePath = newRelativePath(writePath, treeRoot);\r\n                    compoundWrite = compoundWriteAddWrite(compoundWrite, newEmptyPath(), write.snap.getChild(relativePath));\r\n                }\r\n                else ;\r\n            }\r\n            else if (write.children) {\r\n                if (pathContains(treeRoot, writePath)) {\r\n                    relativePath = newRelativePath(treeRoot, writePath);\r\n                    compoundWrite = compoundWriteAddWrites(compoundWrite, relativePath, write.children);\r\n                }\r\n                else if (pathContains(writePath, treeRoot)) {\r\n                    relativePath = newRelativePath(writePath, treeRoot);\r\n                    if (pathIsEmpty(relativePath)) {\r\n                        compoundWrite = compoundWriteAddWrites(compoundWrite, newEmptyPath(), write.children);\r\n                    }\r\n                    else {\r\n                        const child = safeGet(write.children, pathGetFront(relativePath));\r\n                        if (child) {\r\n                            // There exists a child in this node that matches the root path\r\n                            const deepNode = child.getChild(pathPopFront(relativePath));\r\n                            compoundWrite = compoundWriteAddWrite(compoundWrite, newEmptyPath(), deepNode);\r\n                        }\r\n                    }\r\n                }\r\n                else ;\r\n            }\r\n            else {\r\n                throw assertionError('WriteRecord should have .snap or .children');\r\n            }\r\n        }\r\n    }\r\n    return compoundWrite;\r\n}\r\n/**\r\n * Given optional, underlying server data, and an optional set of constraints (exclude some sets, include hidden\r\n * writes), attempt to calculate a complete snapshot for the given path\r\n *\r\n * @param writeIdsToExclude - An optional set to be excluded\r\n * @param includeHiddenWrites - Defaults to false, whether or not to layer on writes with visible set to false\r\n */\r\nfunction writeTreeCalcCompleteEventCache(writeTree, treePath, completeServerCache, writeIdsToExclude, includeHiddenWrites) {\r\n    if (!writeIdsToExclude && !includeHiddenWrites) {\r\n        const shadowingNode = compoundWriteGetCompleteNode(writeTree.visibleWrites, treePath);\r\n        if (shadowingNode != null) {\r\n            return shadowingNode;\r\n        }\r\n        else {\r\n            const subMerge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, treePath);\r\n            if (compoundWriteIsEmpty(subMerge)) {\r\n                return completeServerCache;\r\n            }\r\n            else if (completeServerCache == null &&\r\n                !compoundWriteHasCompleteWrite(subMerge, newEmptyPath())) {\r\n                // We wouldn't have a complete snapshot, since there's no underlying data and no complete shadow\r\n                return null;\r\n            }\r\n            else {\r\n                const layeredCache = completeServerCache || ChildrenNode.EMPTY_NODE;\r\n                return compoundWriteApply(subMerge, layeredCache);\r\n            }\r\n        }\r\n    }\r\n    else {\r\n        const merge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, treePath);\r\n        if (!includeHiddenWrites && compoundWriteIsEmpty(merge)) {\r\n            return completeServerCache;\r\n        }\r\n        else {\r\n            // If the server cache is null, and we don't have a complete cache, we need to return null\r\n            if (!includeHiddenWrites &&\r\n                completeServerCache == null &&\r\n                !compoundWriteHasCompleteWrite(merge, newEmptyPath())) {\r\n                return null;\r\n            }\r\n            else {\r\n                const filter = function (write) {\r\n                    return ((write.visible || includeHiddenWrites) &&\r\n                        (!writeIdsToExclude ||\r\n                            !~writeIdsToExclude.indexOf(write.writeId)) &&\r\n                        (pathContains(write.path, treePath) ||\r\n                            pathContains(treePath, write.path)));\r\n                };\r\n                const mergeAtPath = writeTreeLayerTree_(writeTree.allWrites, filter, treePath);\r\n                const layeredCache = completeServerCache || ChildrenNode.EMPTY_NODE;\r\n                return compoundWriteApply(mergeAtPath, layeredCache);\r\n            }\r\n        }\r\n    }\r\n}\r\n/**\r\n * With optional, underlying server data, attempt to return a children node of children that we have complete data for.\r\n * Used when creating new views, to pre-fill their complete event children snapshot.\r\n */\r\nfunction writeTreeCalcCompleteEventChildren(writeTree, treePath, completeServerChildren) {\r\n    let completeChildren = ChildrenNode.EMPTY_NODE;\r\n    const topLevelSet = compoundWriteGetCompleteNode(writeTree.visibleWrites, treePath);\r\n    if (topLevelSet) {\r\n        if (!topLevelSet.isLeafNode()) {\r\n            // we're shadowing everything. Return the children.\r\n            topLevelSet.forEachChild(PRIORITY_INDEX, (childName, childSnap) => {\r\n                completeChildren = completeChildren.updateImmediateChild(childName, childSnap);\r\n            });\r\n        }\r\n        return completeChildren;\r\n    }\r\n    else if (completeServerChildren) {\r\n        // Layer any children we have on top of this\r\n        // We know we don't have a top-level set, so just enumerate existing children\r\n        const merge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, treePath);\r\n        completeServerChildren.forEachChild(PRIORITY_INDEX, (childName, childNode) => {\r\n            const node = compoundWriteApply(compoundWriteChildCompoundWrite(merge, new Path(childName)), childNode);\r\n            completeChildren = completeChildren.updateImmediateChild(childName, node);\r\n        });\r\n        // Add any complete children we have from the set\r\n        compoundWriteGetCompleteChildren(merge).forEach(namedNode => {\r\n            completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);\r\n        });\r\n        return completeChildren;\r\n    }\r\n    else {\r\n        // We don't have anything to layer on top of. Layer on any children we have\r\n        // Note that we can return an empty snap if we have a defined delete\r\n        const merge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, treePath);\r\n        compoundWriteGetCompleteChildren(merge).forEach(namedNode => {\r\n            completeChildren = completeChildren.updateImmediateChild(namedNode.name, namedNode.node);\r\n        });\r\n        return completeChildren;\r\n    }\r\n}\r\n/**\r\n * Given that the underlying server data has updated, determine what, if anything, needs to be\r\n * applied to the event cache.\r\n *\r\n * Possibilities:\r\n *\r\n * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n *\r\n * 2. Some write is completely shadowing. No events to be raised\r\n *\r\n * 3. Is partially shadowed. Events\r\n *\r\n * Either existingEventSnap or existingServerSnap must exist\r\n */\r\nfunction writeTreeCalcEventCacheAfterServerOverwrite(writeTree, treePath, childPath, existingEventSnap, existingServerSnap) {\r\n    assert(existingEventSnap || existingServerSnap, 'Either existingEventSnap or existingServerSnap must exist');\r\n    const path = pathChild(treePath, childPath);\r\n    if (compoundWriteHasCompleteWrite(writeTree.visibleWrites, path)) {\r\n        // At this point we can probably guarantee that we're in case 2, meaning no events\r\n        // May need to check visibility while doing the findRootMostValueAndPath call\r\n        return null;\r\n    }\r\n    else {\r\n        // No complete shadowing. We're either partially shadowing or not shadowing at all.\r\n        const childMerge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, path);\r\n        if (compoundWriteIsEmpty(childMerge)) {\r\n            // We're not shadowing at all. Case 1\r\n            return existingServerSnap.getChild(childPath);\r\n        }\r\n        else {\r\n            // This could be more efficient if the serverNode + updates doesn't change the eventSnap\r\n            // However this is tricky to find out, since user updates don't necessary change the server\r\n            // snap, e.g. priority updates on empty nodes, or deep deletes. Another special case is if the server\r\n            // adds nodes, but doesn't change any existing writes. It is therefore not enough to\r\n            // only check if the updates change the serverNode.\r\n            // Maybe check if the merge tree contains these special cases and only do a full overwrite in that case?\r\n            return compoundWriteApply(childMerge, existingServerSnap.getChild(childPath));\r\n        }\r\n    }\r\n}\r\n/**\r\n * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n * complete child for this ChildKey.\r\n */\r\nfunction writeTreeCalcCompleteChild(writeTree, treePath, childKey, existingServerSnap) {\r\n    const path = pathChild(treePath, childKey);\r\n    const shadowingNode = compoundWriteGetCompleteNode(writeTree.visibleWrites, path);\r\n    if (shadowingNode != null) {\r\n        return shadowingNode;\r\n    }\r\n    else {\r\n        if (existingServerSnap.isCompleteForChild(childKey)) {\r\n            const childMerge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, path);\r\n            return compoundWriteApply(childMerge, existingServerSnap.getNode().getImmediateChild(childKey));\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n}\r\n/**\r\n * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n * a higher path, this will return the child of that write relative to the write and this path.\r\n * Returns null if there is no write at this path.\r\n */\r\nfunction writeTreeShadowingWrite(writeTree, path) {\r\n    return compoundWriteGetCompleteNode(writeTree.visibleWrites, path);\r\n}\r\n/**\r\n * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n * the window, but may now be in the window.\r\n */\r\nfunction writeTreeCalcIndexedSlice(writeTree, treePath, completeServerData, startPost, count, reverse, index) {\r\n    let toIterate;\r\n    const merge = compoundWriteChildCompoundWrite(writeTree.visibleWrites, treePath);\r\n    const shadowingNode = compoundWriteGetCompleteNode(merge, newEmptyPath());\r\n    if (shadowingNode != null) {\r\n        toIterate = shadowingNode;\r\n    }\r\n    else if (completeServerData != null) {\r\n        toIterate = compoundWriteApply(merge, completeServerData);\r\n    }\r\n    else {\r\n        // no children to iterate on\r\n        return [];\r\n    }\r\n    toIterate = toIterate.withIndex(index);\r\n    if (!toIterate.isEmpty() && !toIterate.isLeafNode()) {\r\n        const nodes = [];\r\n        const cmp = index.getCompare();\r\n        const iter = reverse\r\n            ? toIterate.getReverseIteratorFrom(startPost, index)\r\n            : toIterate.getIteratorFrom(startPost, index);\r\n        let next = iter.getNext();\r\n        while (next && nodes.length < count) {\r\n            if (cmp(next, startPost) !== 0) {\r\n                nodes.push(next);\r\n            }\r\n            next = iter.getNext();\r\n        }\r\n        return nodes;\r\n    }\r\n    else {\r\n        return [];\r\n    }\r\n}\r\nfunction newWriteTree() {\r\n    return {\r\n        visibleWrites: CompoundWrite.empty(),\r\n        allWrites: [],\r\n        lastWriteId: -1\r\n    };\r\n}\r\n/**\r\n * If possible, returns a complete event cache, using the underlying server data if possible. In addition, can be used\r\n * to get a cache that includes hidden writes, and excludes arbitrary writes. Note that customizing the returned node\r\n * can lead to a more expensive calculation.\r\n *\r\n * @param writeIdsToExclude - Optional writes to exclude.\r\n * @param includeHiddenWrites - Defaults to false, whether or not to layer on writes with visible set to false\r\n */\r\nfunction writeTreeRefCalcCompleteEventCache(writeTreeRef, completeServerCache, writeIdsToExclude, includeHiddenWrites) {\r\n    return writeTreeCalcCompleteEventCache(writeTreeRef.writeTree, writeTreeRef.treePath, completeServerCache, writeIdsToExclude, includeHiddenWrites);\r\n}\r\n/**\r\n * If possible, returns a children node containing all of the complete children we have data for. The returned data is a\r\n * mix of the given server data and write data.\r\n *\r\n */\r\nfunction writeTreeRefCalcCompleteEventChildren(writeTreeRef, completeServerChildren) {\r\n    return writeTreeCalcCompleteEventChildren(writeTreeRef.writeTree, writeTreeRef.treePath, completeServerChildren);\r\n}\r\n/**\r\n * Given that either the underlying server data has updated or the outstanding writes have updated, determine what,\r\n * if anything, needs to be applied to the event cache.\r\n *\r\n * Possibilities:\r\n *\r\n * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data\r\n *\r\n * 2. Some write is completely shadowing. No events to be raised\r\n *\r\n * 3. Is partially shadowed. Events should be raised\r\n *\r\n * Either existingEventSnap or existingServerSnap must exist, this is validated via an assert\r\n *\r\n *\r\n */\r\nfunction writeTreeRefCalcEventCacheAfterServerOverwrite(writeTreeRef, path, existingEventSnap, existingServerSnap) {\r\n    return writeTreeCalcEventCacheAfterServerOverwrite(writeTreeRef.writeTree, writeTreeRef.treePath, path, existingEventSnap, existingServerSnap);\r\n}\r\n/**\r\n * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at\r\n * a higher path, this will return the child of that write relative to the write and this path.\r\n * Returns null if there is no write at this path.\r\n *\r\n */\r\nfunction writeTreeRefShadowingWrite(writeTreeRef, path) {\r\n    return writeTreeShadowingWrite(writeTreeRef.writeTree, pathChild(writeTreeRef.treePath, path));\r\n}\r\n/**\r\n * This method is used when processing child remove events on a query. If we can, we pull in children that were outside\r\n * the window, but may now be in the window\r\n */\r\nfunction writeTreeRefCalcIndexedSlice(writeTreeRef, completeServerData, startPost, count, reverse, index) {\r\n    return writeTreeCalcIndexedSlice(writeTreeRef.writeTree, writeTreeRef.treePath, completeServerData, startPost, count, reverse, index);\r\n}\r\n/**\r\n * Returns a complete child for a given server snap after applying all user writes or null if there is no\r\n * complete child for this ChildKey.\r\n */\r\nfunction writeTreeRefCalcCompleteChild(writeTreeRef, childKey, existingServerCache) {\r\n    return writeTreeCalcCompleteChild(writeTreeRef.writeTree, writeTreeRef.treePath, childKey, existingServerCache);\r\n}\r\n/**\r\n * Return a WriteTreeRef for a child.\r\n */\r\nfunction writeTreeRefChild(writeTreeRef, childName) {\r\n    return newWriteTreeRef(pathChild(writeTreeRef.treePath, childName), writeTreeRef.writeTree);\r\n}\r\nfunction newWriteTreeRef(path, writeTree) {\r\n    return {\r\n        treePath: path,\r\n        writeTree\r\n    };\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass ChildChangeAccumulator {\r\n    constructor() {\r\n        this.changeMap = new Map();\r\n    }\r\n    trackChildChange(change) {\r\n        const type = change.type;\r\n        const childKey = change.childName;\r\n        assert(type === \"child_added\" /* CHILD_ADDED */ ||\r\n            type === \"child_changed\" /* CHILD_CHANGED */ ||\r\n            type === \"child_removed\" /* CHILD_REMOVED */, 'Only child changes supported for tracking');\r\n        assert(childKey !== '.priority', 'Only non-priority child changes can be tracked.');\r\n        const oldChange = this.changeMap.get(childKey);\r\n        if (oldChange) {\r\n            const oldType = oldChange.type;\r\n            if (type === \"child_added\" /* CHILD_ADDED */ &&\r\n                oldType === \"child_removed\" /* CHILD_REMOVED */) {\r\n                this.changeMap.set(childKey, changeChildChanged(childKey, change.snapshotNode, oldChange.snapshotNode));\r\n            }\r\n            else if (type === \"child_removed\" /* CHILD_REMOVED */ &&\r\n                oldType === \"child_added\" /* CHILD_ADDED */) {\r\n                this.changeMap.delete(childKey);\r\n            }\r\n            else if (type === \"child_removed\" /* CHILD_REMOVED */ &&\r\n                oldType === \"child_changed\" /* CHILD_CHANGED */) {\r\n                this.changeMap.set(childKey, changeChildRemoved(childKey, oldChange.oldSnap));\r\n            }\r\n            else if (type === \"child_changed\" /* CHILD_CHANGED */ &&\r\n                oldType === \"child_added\" /* CHILD_ADDED */) {\r\n                this.changeMap.set(childKey, changeChildAdded(childKey, change.snapshotNode));\r\n            }\r\n            else if (type === \"child_changed\" /* CHILD_CHANGED */ &&\r\n                oldType === \"child_changed\" /* CHILD_CHANGED */) {\r\n                this.changeMap.set(childKey, changeChildChanged(childKey, change.snapshotNode, oldChange.oldSnap));\r\n            }\r\n            else {\r\n                throw assertionError('Illegal combination of changes: ' +\r\n                    change +\r\n                    ' occurred after ' +\r\n                    oldChange);\r\n            }\r\n        }\r\n        else {\r\n            this.changeMap.set(childKey, change);\r\n        }\r\n    }\r\n    getChanges() {\r\n        return Array.from(this.changeMap.values());\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * An implementation of CompleteChildSource that never returns any additional children\r\n */\r\n// eslint-disable-next-line @typescript-eslint/naming-convention\r\nclass NoCompleteChildSource_ {\r\n    getCompleteChild(childKey) {\r\n        return null;\r\n    }\r\n    getChildAfterChild(index, child, reverse) {\r\n        return null;\r\n    }\r\n}\r\n/**\r\n * Singleton instance.\r\n */\r\nconst NO_COMPLETE_CHILD_SOURCE = new NoCompleteChildSource_();\r\n/**\r\n * An implementation of CompleteChildSource that uses a WriteTree in addition to any other server data or\r\n * old event caches available to calculate complete children.\r\n */\r\nclass WriteTreeCompleteChildSource {\r\n    constructor(writes_, viewCache_, optCompleteServerCache_ = null) {\r\n        this.writes_ = writes_;\r\n        this.viewCache_ = viewCache_;\r\n        this.optCompleteServerCache_ = optCompleteServerCache_;\r\n    }\r\n    getCompleteChild(childKey) {\r\n        const node = this.viewCache_.eventCache;\r\n        if (node.isCompleteForChild(childKey)) {\r\n            return node.getNode().getImmediateChild(childKey);\r\n        }\r\n        else {\r\n            const serverNode = this.optCompleteServerCache_ != null\r\n                ? new CacheNode(this.optCompleteServerCache_, true, false)\r\n                : this.viewCache_.serverCache;\r\n            return writeTreeRefCalcCompleteChild(this.writes_, childKey, serverNode);\r\n        }\r\n    }\r\n    getChildAfterChild(index, child, reverse) {\r\n        const completeServerData = this.optCompleteServerCache_ != null\r\n            ? this.optCompleteServerCache_\r\n            : viewCacheGetCompleteServerSnap(this.viewCache_);\r\n        const nodes = writeTreeRefCalcIndexedSlice(this.writes_, completeServerData, child, 1, reverse, index);\r\n        if (nodes.length === 0) {\r\n            return null;\r\n        }\r\n        else {\r\n            return nodes[0];\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction newViewProcessor(filter) {\r\n    return { filter };\r\n}\r\nfunction viewProcessorAssertIndexed(viewProcessor, viewCache) {\r\n    assert(viewCache.eventCache.getNode().isIndexed(viewProcessor.filter.getIndex()), 'Event snap not indexed');\r\n    assert(viewCache.serverCache.getNode().isIndexed(viewProcessor.filter.getIndex()), 'Server snap not indexed');\r\n}\r\nfunction viewProcessorApplyOperation(viewProcessor, oldViewCache, operation, writesCache, completeCache) {\r\n    const accumulator = new ChildChangeAccumulator();\r\n    let newViewCache, filterServerNode;\r\n    if (operation.type === OperationType.OVERWRITE) {\r\n        const overwrite = operation;\r\n        if (overwrite.source.fromUser) {\r\n            newViewCache = viewProcessorApplyUserOverwrite(viewProcessor, oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, accumulator);\r\n        }\r\n        else {\r\n            assert(overwrite.source.fromServer, 'Unknown source.');\r\n            // We filter the node if it's a tagged update or the node has been previously filtered  and the\r\n            // update is not at the root in which case it is ok (and necessary) to mark the node unfiltered\r\n            // again\r\n            filterServerNode =\r\n                overwrite.source.tagged ||\r\n                    (oldViewCache.serverCache.isFiltered() && !pathIsEmpty(overwrite.path));\r\n            newViewCache = viewProcessorApplyServerOverwrite(viewProcessor, oldViewCache, overwrite.path, overwrite.snap, writesCache, completeCache, filterServerNode, accumulator);\r\n        }\r\n    }\r\n    else if (operation.type === OperationType.MERGE) {\r\n        const merge = operation;\r\n        if (merge.source.fromUser) {\r\n            newViewCache = viewProcessorApplyUserMerge(viewProcessor, oldViewCache, merge.path, merge.children, writesCache, completeCache, accumulator);\r\n        }\r\n        else {\r\n            assert(merge.source.fromServer, 'Unknown source.');\r\n            // We filter the node if it's a tagged update or the node has been previously filtered\r\n            filterServerNode =\r\n                merge.source.tagged || oldViewCache.serverCache.isFiltered();\r\n            newViewCache = viewProcessorApplyServerMerge(viewProcessor, oldViewCache, merge.path, merge.children, writesCache, completeCache, filterServerNode, accumulator);\r\n        }\r\n    }\r\n    else if (operation.type === OperationType.ACK_USER_WRITE) {\r\n        const ackUserWrite = operation;\r\n        if (!ackUserWrite.revert) {\r\n            newViewCache = viewProcessorAckUserWrite(viewProcessor, oldViewCache, ackUserWrite.path, ackUserWrite.affectedTree, writesCache, completeCache, accumulator);\r\n        }\r\n        else {\r\n            newViewCache = viewProcessorRevertUserWrite(viewProcessor, oldViewCache, ackUserWrite.path, writesCache, completeCache, accumulator);\r\n        }\r\n    }\r\n    else if (operation.type === OperationType.LISTEN_COMPLETE) {\r\n        newViewCache = viewProcessorListenComplete(viewProcessor, oldViewCache, operation.path, writesCache, accumulator);\r\n    }\r\n    else {\r\n        throw assertionError('Unknown operation type: ' + operation.type);\r\n    }\r\n    const changes = accumulator.getChanges();\r\n    viewProcessorMaybeAddValueEvent(oldViewCache, newViewCache, changes);\r\n    return { viewCache: newViewCache, changes };\r\n}\r\nfunction viewProcessorMaybeAddValueEvent(oldViewCache, newViewCache, accumulator) {\r\n    const eventSnap = newViewCache.eventCache;\r\n    if (eventSnap.isFullyInitialized()) {\r\n        const isLeafOrEmpty = eventSnap.getNode().isLeafNode() || eventSnap.getNode().isEmpty();\r\n        const oldCompleteSnap = viewCacheGetCompleteEventSnap(oldViewCache);\r\n        if (accumulator.length > 0 ||\r\n            !oldViewCache.eventCache.isFullyInitialized() ||\r\n            (isLeafOrEmpty && !eventSnap.getNode().equals(oldCompleteSnap)) ||\r\n            !eventSnap.getNode().getPriority().equals(oldCompleteSnap.getPriority())) {\r\n            accumulator.push(changeValue(viewCacheGetCompleteEventSnap(newViewCache)));\r\n        }\r\n    }\r\n}\r\nfunction viewProcessorGenerateEventCacheAfterServerEvent(viewProcessor, viewCache, changePath, writesCache, source, accumulator) {\r\n    const oldEventSnap = viewCache.eventCache;\r\n    if (writeTreeRefShadowingWrite(writesCache, changePath) != null) {\r\n        // we have a shadowing write, ignore changes\r\n        return viewCache;\r\n    }\r\n    else {\r\n        let newEventCache, serverNode;\r\n        if (pathIsEmpty(changePath)) {\r\n            // TODO: figure out how this plays with \"sliding ack windows\"\r\n            assert(viewCache.serverCache.isFullyInitialized(), 'If change path is empty, we must have complete server data');\r\n            if (viewCache.serverCache.isFiltered()) {\r\n                // We need to special case this, because we need to only apply writes to complete children, or\r\n                // we might end up raising events for incomplete children. If the server data is filtered deep\r\n                // writes cannot be guaranteed to be complete\r\n                const serverCache = viewCacheGetCompleteServerSnap(viewCache);\r\n                const completeChildren = serverCache instanceof ChildrenNode\r\n                    ? serverCache\r\n                    : ChildrenNode.EMPTY_NODE;\r\n                const completeEventChildren = writeTreeRefCalcCompleteEventChildren(writesCache, completeChildren);\r\n                newEventCache = viewProcessor.filter.updateFullNode(viewCache.eventCache.getNode(), completeEventChildren, accumulator);\r\n            }\r\n            else {\r\n                const completeNode = writeTreeRefCalcCompleteEventCache(writesCache, viewCacheGetCompleteServerSnap(viewCache));\r\n                newEventCache = viewProcessor.filter.updateFullNode(viewCache.eventCache.getNode(), completeNode, accumulator);\r\n            }\r\n        }\r\n        else {\r\n            const childKey = pathGetFront(changePath);\r\n            if (childKey === '.priority') {\r\n                assert(pathGetLength(changePath) === 1, \"Can't have a priority with additional path components\");\r\n                const oldEventNode = oldEventSnap.getNode();\r\n                serverNode = viewCache.serverCache.getNode();\r\n                // we might have overwrites for this priority\r\n                const updatedPriority = writeTreeRefCalcEventCacheAfterServerOverwrite(writesCache, changePath, oldEventNode, serverNode);\r\n                if (updatedPriority != null) {\r\n                    newEventCache = viewProcessor.filter.updatePriority(oldEventNode, updatedPriority);\r\n                }\r\n                else {\r\n                    // priority didn't change, keep old node\r\n                    newEventCache = oldEventSnap.getNode();\r\n                }\r\n            }\r\n            else {\r\n                const childChangePath = pathPopFront(changePath);\r\n                // update child\r\n                let newEventChild;\r\n                if (oldEventSnap.isCompleteForChild(childKey)) {\r\n                    serverNode = viewCache.serverCache.getNode();\r\n                    const eventChildUpdate = writeTreeRefCalcEventCacheAfterServerOverwrite(writesCache, changePath, oldEventSnap.getNode(), serverNode);\r\n                    if (eventChildUpdate != null) {\r\n                        newEventChild = oldEventSnap\r\n                            .getNode()\r\n                            .getImmediateChild(childKey)\r\n                            .updateChild(childChangePath, eventChildUpdate);\r\n                    }\r\n                    else {\r\n                        // Nothing changed, just keep the old child\r\n                        newEventChild = oldEventSnap.getNode().getImmediateChild(childKey);\r\n                    }\r\n                }\r\n                else {\r\n                    newEventChild = writeTreeRefCalcCompleteChild(writesCache, childKey, viewCache.serverCache);\r\n                }\r\n                if (newEventChild != null) {\r\n                    newEventCache = viewProcessor.filter.updateChild(oldEventSnap.getNode(), childKey, newEventChild, childChangePath, source, accumulator);\r\n                }\r\n                else {\r\n                    // no complete child available or no change\r\n                    newEventCache = oldEventSnap.getNode();\r\n                }\r\n            }\r\n        }\r\n        return viewCacheUpdateEventSnap(viewCache, newEventCache, oldEventSnap.isFullyInitialized() || pathIsEmpty(changePath), viewProcessor.filter.filtersNodes());\r\n    }\r\n}\r\nfunction viewProcessorApplyServerOverwrite(viewProcessor, oldViewCache, changePath, changedSnap, writesCache, completeCache, filterServerNode, accumulator) {\r\n    const oldServerSnap = oldViewCache.serverCache;\r\n    let newServerCache;\r\n    const serverFilter = filterServerNode\r\n        ? viewProcessor.filter\r\n        : viewProcessor.filter.getIndexedFilter();\r\n    if (pathIsEmpty(changePath)) {\r\n        newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), changedSnap, null);\r\n    }\r\n    else if (serverFilter.filtersNodes() && !oldServerSnap.isFiltered()) {\r\n        // we want to filter the server node, but we didn't filter the server node yet, so simulate a full update\r\n        const newServerNode = oldServerSnap\r\n            .getNode()\r\n            .updateChild(changePath, changedSnap);\r\n        newServerCache = serverFilter.updateFullNode(oldServerSnap.getNode(), newServerNode, null);\r\n    }\r\n    else {\r\n        const childKey = pathGetFront(changePath);\r\n        if (!oldServerSnap.isCompleteForPath(changePath) &&\r\n            pathGetLength(changePath) > 1) {\r\n            // We don't update incomplete nodes with updates intended for other listeners\r\n            return oldViewCache;\r\n        }\r\n        const childChangePath = pathPopFront(changePath);\r\n        const childNode = oldServerSnap.getNode().getImmediateChild(childKey);\r\n        const newChildNode = childNode.updateChild(childChangePath, changedSnap);\r\n        if (childKey === '.priority') {\r\n            newServerCache = serverFilter.updatePriority(oldServerSnap.getNode(), newChildNode);\r\n        }\r\n        else {\r\n            newServerCache = serverFilter.updateChild(oldServerSnap.getNode(), childKey, newChildNode, childChangePath, NO_COMPLETE_CHILD_SOURCE, null);\r\n        }\r\n    }\r\n    const newViewCache = viewCacheUpdateServerSnap(oldViewCache, newServerCache, oldServerSnap.isFullyInitialized() || pathIsEmpty(changePath), serverFilter.filtersNodes());\r\n    const source = new WriteTreeCompleteChildSource(writesCache, newViewCache, completeCache);\r\n    return viewProcessorGenerateEventCacheAfterServerEvent(viewProcessor, newViewCache, changePath, writesCache, source, accumulator);\r\n}\r\nfunction viewProcessorApplyUserOverwrite(viewProcessor, oldViewCache, changePath, changedSnap, writesCache, completeCache, accumulator) {\r\n    const oldEventSnap = oldViewCache.eventCache;\r\n    let newViewCache, newEventCache;\r\n    const source = new WriteTreeCompleteChildSource(writesCache, oldViewCache, completeCache);\r\n    if (pathIsEmpty(changePath)) {\r\n        newEventCache = viewProcessor.filter.updateFullNode(oldViewCache.eventCache.getNode(), changedSnap, accumulator);\r\n        newViewCache = viewCacheUpdateEventSnap(oldViewCache, newEventCache, true, viewProcessor.filter.filtersNodes());\r\n    }\r\n    else {\r\n        const childKey = pathGetFront(changePath);\r\n        if (childKey === '.priority') {\r\n            newEventCache = viewProcessor.filter.updatePriority(oldViewCache.eventCache.getNode(), changedSnap);\r\n            newViewCache = viewCacheUpdateEventSnap(oldViewCache, newEventCache, oldEventSnap.isFullyInitialized(), oldEventSnap.isFiltered());\r\n        }\r\n        else {\r\n            const childChangePath = pathPopFront(changePath);\r\n            const oldChild = oldEventSnap.getNode().getImmediateChild(childKey);\r\n            let newChild;\r\n            if (pathIsEmpty(childChangePath)) {\r\n                // Child overwrite, we can replace the child\r\n                newChild = changedSnap;\r\n            }\r\n            else {\r\n                const childNode = source.getCompleteChild(childKey);\r\n                if (childNode != null) {\r\n                    if (pathGetBack(childChangePath) === '.priority' &&\r\n                        childNode.getChild(pathParent(childChangePath)).isEmpty()) {\r\n                        // This is a priority update on an empty node. If this node exists on the server, the\r\n                        // server will send down the priority in the update, so ignore for now\r\n                        newChild = childNode;\r\n                    }\r\n                    else {\r\n                        newChild = childNode.updateChild(childChangePath, changedSnap);\r\n                    }\r\n                }\r\n                else {\r\n                    // There is no complete child node available\r\n                    newChild = ChildrenNode.EMPTY_NODE;\r\n                }\r\n            }\r\n            if (!oldChild.equals(newChild)) {\r\n                const newEventSnap = viewProcessor.filter.updateChild(oldEventSnap.getNode(), childKey, newChild, childChangePath, source, accumulator);\r\n                newViewCache = viewCacheUpdateEventSnap(oldViewCache, newEventSnap, oldEventSnap.isFullyInitialized(), viewProcessor.filter.filtersNodes());\r\n            }\r\n            else {\r\n                newViewCache = oldViewCache;\r\n            }\r\n        }\r\n    }\r\n    return newViewCache;\r\n}\r\nfunction viewProcessorCacheHasChild(viewCache, childKey) {\r\n    return viewCache.eventCache.isCompleteForChild(childKey);\r\n}\r\nfunction viewProcessorApplyUserMerge(viewProcessor, viewCache, path, changedChildren, writesCache, serverCache, accumulator) {\r\n    // HACK: In the case of a limit query, there may be some changes that bump things out of the\r\n    // window leaving room for new items.  It's important we process these changes first, so we\r\n    // iterate the changes twice, first processing any that affect items currently in view.\r\n    // TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\r\n    // and event snap.  I'm not sure if this will result in edge cases when a child is in one but\r\n    // not the other.\r\n    let curViewCache = viewCache;\r\n    changedChildren.foreach((relativePath, childNode) => {\r\n        const writePath = pathChild(path, relativePath);\r\n        if (viewProcessorCacheHasChild(viewCache, pathGetFront(writePath))) {\r\n            curViewCache = viewProcessorApplyUserOverwrite(viewProcessor, curViewCache, writePath, childNode, writesCache, serverCache, accumulator);\r\n        }\r\n    });\r\n    changedChildren.foreach((relativePath, childNode) => {\r\n        const writePath = pathChild(path, relativePath);\r\n        if (!viewProcessorCacheHasChild(viewCache, pathGetFront(writePath))) {\r\n            curViewCache = viewProcessorApplyUserOverwrite(viewProcessor, curViewCache, writePath, childNode, writesCache, serverCache, accumulator);\r\n        }\r\n    });\r\n    return curViewCache;\r\n}\r\nfunction viewProcessorApplyMerge(viewProcessor, node, merge) {\r\n    merge.foreach((relativePath, childNode) => {\r\n        node = node.updateChild(relativePath, childNode);\r\n    });\r\n    return node;\r\n}\r\nfunction viewProcessorApplyServerMerge(viewProcessor, viewCache, path, changedChildren, writesCache, serverCache, filterServerNode, accumulator) {\r\n    // If we don't have a cache yet, this merge was intended for a previously listen in the same location. Ignore it and\r\n    // wait for the complete data update coming soon.\r\n    if (viewCache.serverCache.getNode().isEmpty() &&\r\n        !viewCache.serverCache.isFullyInitialized()) {\r\n        return viewCache;\r\n    }\r\n    // HACK: In the case of a limit query, there may be some changes that bump things out of the\r\n    // window leaving room for new items.  It's important we process these changes first, so we\r\n    // iterate the changes twice, first processing any that affect items currently in view.\r\n    // TODO: I consider an item \"in view\" if cacheHasChild is true, which checks both the server\r\n    // and event snap.  I'm not sure if this will result in edge cases when a child is in one but\r\n    // not the other.\r\n    let curViewCache = viewCache;\r\n    let viewMergeTree;\r\n    if (pathIsEmpty(path)) {\r\n        viewMergeTree = changedChildren;\r\n    }\r\n    else {\r\n        viewMergeTree = new ImmutableTree(null).setTree(path, changedChildren);\r\n    }\r\n    const serverNode = viewCache.serverCache.getNode();\r\n    viewMergeTree.children.inorderTraversal((childKey, childTree) => {\r\n        if (serverNode.hasChild(childKey)) {\r\n            const serverChild = viewCache.serverCache\r\n                .getNode()\r\n                .getImmediateChild(childKey);\r\n            const newChild = viewProcessorApplyMerge(viewProcessor, serverChild, childTree);\r\n            curViewCache = viewProcessorApplyServerOverwrite(viewProcessor, curViewCache, new Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);\r\n        }\r\n    });\r\n    viewMergeTree.children.inorderTraversal((childKey, childMergeTree) => {\r\n        const isUnknownDeepMerge = !viewCache.serverCache.isCompleteForChild(childKey) &&\r\n            childMergeTree.value === undefined;\r\n        if (!serverNode.hasChild(childKey) && !isUnknownDeepMerge) {\r\n            const serverChild = viewCache.serverCache\r\n                .getNode()\r\n                .getImmediateChild(childKey);\r\n            const newChild = viewProcessorApplyMerge(viewProcessor, serverChild, childMergeTree);\r\n            curViewCache = viewProcessorApplyServerOverwrite(viewProcessor, curViewCache, new Path(childKey), newChild, writesCache, serverCache, filterServerNode, accumulator);\r\n        }\r\n    });\r\n    return curViewCache;\r\n}\r\nfunction viewProcessorAckUserWrite(viewProcessor, viewCache, ackPath, affectedTree, writesCache, completeCache, accumulator) {\r\n    if (writeTreeRefShadowingWrite(writesCache, ackPath) != null) {\r\n        return viewCache;\r\n    }\r\n    // Only filter server node if it is currently filtered\r\n    const filterServerNode = viewCache.serverCache.isFiltered();\r\n    // Essentially we'll just get our existing server cache for the affected paths and re-apply it as a server update\r\n    // now that it won't be shadowed.\r\n    const serverCache = viewCache.serverCache;\r\n    if (affectedTree.value != null) {\r\n        // This is an overwrite.\r\n        if ((pathIsEmpty(ackPath) && serverCache.isFullyInitialized()) ||\r\n            serverCache.isCompleteForPath(ackPath)) {\r\n            return viewProcessorApplyServerOverwrite(viewProcessor, viewCache, ackPath, serverCache.getNode().getChild(ackPath), writesCache, completeCache, filterServerNode, accumulator);\r\n        }\r\n        else if (pathIsEmpty(ackPath)) {\r\n            // This is a goofy edge case where we are acking data at this location but don't have full data.  We\r\n            // should just re-apply whatever we have in our cache as a merge.\r\n            let changedChildren = new ImmutableTree(null);\r\n            serverCache.getNode().forEachChild(KEY_INDEX, (name, node) => {\r\n                changedChildren = changedChildren.set(new Path(name), node);\r\n            });\r\n            return viewProcessorApplyServerMerge(viewProcessor, viewCache, ackPath, changedChildren, writesCache, completeCache, filterServerNode, accumulator);\r\n        }\r\n        else {\r\n            return viewCache;\r\n        }\r\n    }\r\n    else {\r\n        // This is a merge.\r\n        let changedChildren = new ImmutableTree(null);\r\n        affectedTree.foreach((mergePath, value) => {\r\n            const serverCachePath = pathChild(ackPath, mergePath);\r\n            if (serverCache.isCompleteForPath(serverCachePath)) {\r\n                changedChildren = changedChildren.set(mergePath, serverCache.getNode().getChild(serverCachePath));\r\n            }\r\n        });\r\n        return viewProcessorApplyServerMerge(viewProcessor, viewCache, ackPath, changedChildren, writesCache, completeCache, filterServerNode, accumulator);\r\n    }\r\n}\r\nfunction viewProcessorListenComplete(viewProcessor, viewCache, path, writesCache, accumulator) {\r\n    const oldServerNode = viewCache.serverCache;\r\n    const newViewCache = viewCacheUpdateServerSnap(viewCache, oldServerNode.getNode(), oldServerNode.isFullyInitialized() || pathIsEmpty(path), oldServerNode.isFiltered());\r\n    return viewProcessorGenerateEventCacheAfterServerEvent(viewProcessor, newViewCache, path, writesCache, NO_COMPLETE_CHILD_SOURCE, accumulator);\r\n}\r\nfunction viewProcessorRevertUserWrite(viewProcessor, viewCache, path, writesCache, completeServerCache, accumulator) {\r\n    let complete;\r\n    if (writeTreeRefShadowingWrite(writesCache, path) != null) {\r\n        return viewCache;\r\n    }\r\n    else {\r\n        const source = new WriteTreeCompleteChildSource(writesCache, viewCache, completeServerCache);\r\n        const oldEventCache = viewCache.eventCache.getNode();\r\n        let newEventCache;\r\n        if (pathIsEmpty(path) || pathGetFront(path) === '.priority') {\r\n            let newNode;\r\n            if (viewCache.serverCache.isFullyInitialized()) {\r\n                newNode = writeTreeRefCalcCompleteEventCache(writesCache, viewCacheGetCompleteServerSnap(viewCache));\r\n            }\r\n            else {\r\n                const serverChildren = viewCache.serverCache.getNode();\r\n                assert(serverChildren instanceof ChildrenNode, 'serverChildren would be complete if leaf node');\r\n                newNode = writeTreeRefCalcCompleteEventChildren(writesCache, serverChildren);\r\n            }\r\n            newNode = newNode;\r\n            newEventCache = viewProcessor.filter.updateFullNode(oldEventCache, newNode, accumulator);\r\n        }\r\n        else {\r\n            const childKey = pathGetFront(path);\r\n            let newChild = writeTreeRefCalcCompleteChild(writesCache, childKey, viewCache.serverCache);\r\n            if (newChild == null &&\r\n                viewCache.serverCache.isCompleteForChild(childKey)) {\r\n                newChild = oldEventCache.getImmediateChild(childKey);\r\n            }\r\n            if (newChild != null) {\r\n                newEventCache = viewProcessor.filter.updateChild(oldEventCache, childKey, newChild, pathPopFront(path), source, accumulator);\r\n            }\r\n            else if (viewCache.eventCache.getNode().hasChild(childKey)) {\r\n                // No complete child available, delete the existing one, if any\r\n                newEventCache = viewProcessor.filter.updateChild(oldEventCache, childKey, ChildrenNode.EMPTY_NODE, pathPopFront(path), source, accumulator);\r\n            }\r\n            else {\r\n                newEventCache = oldEventCache;\r\n            }\r\n            if (newEventCache.isEmpty() &&\r\n                viewCache.serverCache.isFullyInitialized()) {\r\n                // We might have reverted all child writes. Maybe the old event was a leaf node\r\n                complete = writeTreeRefCalcCompleteEventCache(writesCache, viewCacheGetCompleteServerSnap(viewCache));\r\n                if (complete.isLeafNode()) {\r\n                    newEventCache = viewProcessor.filter.updateFullNode(newEventCache, complete, accumulator);\r\n                }\r\n            }\r\n        }\r\n        complete =\r\n            viewCache.serverCache.isFullyInitialized() ||\r\n                writeTreeRefShadowingWrite(writesCache, newEmptyPath()) != null;\r\n        return viewCacheUpdateEventSnap(viewCache, newEventCache, complete, viewProcessor.filter.filtersNodes());\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A view represents a specific location and query that has 1 or more event registrations.\r\n *\r\n * It does several things:\r\n *  - Maintains the list of event registrations for this location/query.\r\n *  - Maintains a cache of the data visible for this location/query.\r\n *  - Applies new operations (via applyOperation), updates the cache, and based on the event\r\n *    registrations returns the set of events to be raised.\r\n */\r\nclass View {\r\n    constructor(query_, initialViewCache) {\r\n        this.query_ = query_;\r\n        this.eventRegistrations_ = [];\r\n        const params = this.query_._queryParams;\r\n        const indexFilter = new IndexedFilter(params.getIndex());\r\n        const filter = queryParamsGetNodeFilter(params);\r\n        this.processor_ = newViewProcessor(filter);\r\n        const initialServerCache = initialViewCache.serverCache;\r\n        const initialEventCache = initialViewCache.eventCache;\r\n        // Don't filter server node with other filter than index, wait for tagged listen\r\n        const serverSnap = indexFilter.updateFullNode(ChildrenNode.EMPTY_NODE, initialServerCache.getNode(), null);\r\n        const eventSnap = filter.updateFullNode(ChildrenNode.EMPTY_NODE, initialEventCache.getNode(), null);\r\n        const newServerCache = new CacheNode(serverSnap, initialServerCache.isFullyInitialized(), indexFilter.filtersNodes());\r\n        const newEventCache = new CacheNode(eventSnap, initialEventCache.isFullyInitialized(), filter.filtersNodes());\r\n        this.viewCache_ = newViewCache(newEventCache, newServerCache);\r\n        this.eventGenerator_ = new EventGenerator(this.query_);\r\n    }\r\n    get query() {\r\n        return this.query_;\r\n    }\r\n}\r\nfunction viewGetServerCache(view) {\r\n    return view.viewCache_.serverCache.getNode();\r\n}\r\nfunction viewGetCompleteNode(view) {\r\n    return viewCacheGetCompleteEventSnap(view.viewCache_);\r\n}\r\nfunction viewGetCompleteServerCache(view, path) {\r\n    const cache = viewCacheGetCompleteServerSnap(view.viewCache_);\r\n    if (cache) {\r\n        // If this isn't a \"loadsAllData\" view, then cache isn't actually a complete cache and\r\n        // we need to see if it contains the child we're interested in.\r\n        if (view.query._queryParams.loadsAllData() ||\r\n            (!pathIsEmpty(path) &&\r\n                !cache.getImmediateChild(pathGetFront(path)).isEmpty())) {\r\n            return cache.getChild(path);\r\n        }\r\n    }\r\n    return null;\r\n}\r\nfunction viewIsEmpty(view) {\r\n    return view.eventRegistrations_.length === 0;\r\n}\r\nfunction viewAddEventRegistration(view, eventRegistration) {\r\n    view.eventRegistrations_.push(eventRegistration);\r\n}\r\n/**\r\n * @param eventRegistration - If null, remove all callbacks.\r\n * @param cancelError - If a cancelError is provided, appropriate cancel events will be returned.\r\n * @returns Cancel events, if cancelError was provided.\r\n */\r\nfunction viewRemoveEventRegistration(view, eventRegistration, cancelError) {\r\n    const cancelEvents = [];\r\n    if (cancelError) {\r\n        assert(eventRegistration == null, 'A cancel should cancel all event registrations.');\r\n        const path = view.query._path;\r\n        view.eventRegistrations_.forEach(registration => {\r\n            const maybeEvent = registration.createCancelEvent(cancelError, path);\r\n            if (maybeEvent) {\r\n                cancelEvents.push(maybeEvent);\r\n            }\r\n        });\r\n    }\r\n    if (eventRegistration) {\r\n        let remaining = [];\r\n        for (let i = 0; i < view.eventRegistrations_.length; ++i) {\r\n            const existing = view.eventRegistrations_[i];\r\n            if (!existing.matches(eventRegistration)) {\r\n                remaining.push(existing);\r\n            }\r\n            else if (eventRegistration.hasAnyCallback()) {\r\n                // We're removing just this one\r\n                remaining = remaining.concat(view.eventRegistrations_.slice(i + 1));\r\n                break;\r\n            }\r\n        }\r\n        view.eventRegistrations_ = remaining;\r\n    }\r\n    else {\r\n        view.eventRegistrations_ = [];\r\n    }\r\n    return cancelEvents;\r\n}\r\n/**\r\n * Applies the given Operation, updates our cache, and returns the appropriate events.\r\n */\r\nfunction viewApplyOperation(view, operation, writesCache, completeServerCache) {\r\n    if (operation.type === OperationType.MERGE &&\r\n        operation.source.queryId !== null) {\r\n        assert(viewCacheGetCompleteServerSnap(view.viewCache_), 'We should always have a full cache before handling merges');\r\n        assert(viewCacheGetCompleteEventSnap(view.viewCache_), 'Missing event cache, even though we have a server cache');\r\n    }\r\n    const oldViewCache = view.viewCache_;\r\n    const result = viewProcessorApplyOperation(view.processor_, oldViewCache, operation, writesCache, completeServerCache);\r\n    viewProcessorAssertIndexed(view.processor_, result.viewCache);\r\n    assert(result.viewCache.serverCache.isFullyInitialized() ||\r\n        !oldViewCache.serverCache.isFullyInitialized(), 'Once a server snap is complete, it should never go back');\r\n    view.viewCache_ = result.viewCache;\r\n    return viewGenerateEventsForChanges_(view, result.changes, result.viewCache.eventCache.getNode(), null);\r\n}\r\nfunction viewGetInitialEvents(view, registration) {\r\n    const eventSnap = view.viewCache_.eventCache;\r\n    const initialChanges = [];\r\n    if (!eventSnap.getNode().isLeafNode()) {\r\n        const eventNode = eventSnap.getNode();\r\n        eventNode.forEachChild(PRIORITY_INDEX, (key, childNode) => {\r\n            initialChanges.push(changeChildAdded(key, childNode));\r\n        });\r\n    }\r\n    if (eventSnap.isFullyInitialized()) {\r\n        initialChanges.push(changeValue(eventSnap.getNode()));\r\n    }\r\n    return viewGenerateEventsForChanges_(view, initialChanges, eventSnap.getNode(), registration);\r\n}\r\nfunction viewGenerateEventsForChanges_(view, changes, eventCache, eventRegistration) {\r\n    const registrations = eventRegistration\r\n        ? [eventRegistration]\r\n        : view.eventRegistrations_;\r\n    return eventGeneratorGenerateEventsForChanges(view.eventGenerator_, changes, eventCache, registrations);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet referenceConstructor$1;\r\n/**\r\n * SyncPoint represents a single location in a SyncTree with 1 or more event registrations, meaning we need to\r\n * maintain 1 or more Views at this location to cache server data and raise appropriate events for server changes\r\n * and user writes (set, transaction, update).\r\n *\r\n * It's responsible for:\r\n *  - Maintaining the set of 1 or more views necessary at this location (a SyncPoint with 0 views should be removed).\r\n *  - Proxying user / server operations to the views as appropriate (i.e. applyServerOverwrite,\r\n *    applyUserOverwrite, etc.)\r\n */\r\nclass SyncPoint {\r\n    constructor() {\r\n        /**\r\n         * The Views being tracked at this location in the tree, stored as a map where the key is a\r\n         * queryId and the value is the View for that query.\r\n         *\r\n         * NOTE: This list will be quite small (usually 1, but perhaps 2 or 3; any more is an odd use case).\r\n         */\r\n        this.views = new Map();\r\n    }\r\n}\r\nfunction syncPointSetReferenceConstructor(val) {\r\n    assert(!referenceConstructor$1, '__referenceConstructor has already been defined');\r\n    referenceConstructor$1 = val;\r\n}\r\nfunction syncPointGetReferenceConstructor() {\r\n    assert(referenceConstructor$1, 'Reference.ts has not been loaded');\r\n    return referenceConstructor$1;\r\n}\r\nfunction syncPointIsEmpty(syncPoint) {\r\n    return syncPoint.views.size === 0;\r\n}\r\nfunction syncPointApplyOperation(syncPoint, operation, writesCache, optCompleteServerCache) {\r\n    const queryId = operation.source.queryId;\r\n    if (queryId !== null) {\r\n        const view = syncPoint.views.get(queryId);\r\n        assert(view != null, 'SyncTree gave us an op for an invalid query.');\r\n        return viewApplyOperation(view, operation, writesCache, optCompleteServerCache);\r\n    }\r\n    else {\r\n        let events = [];\r\n        for (const view of syncPoint.views.values()) {\r\n            events = events.concat(viewApplyOperation(view, operation, writesCache, optCompleteServerCache));\r\n        }\r\n        return events;\r\n    }\r\n}\r\n/**\r\n * Get a view for the specified query.\r\n *\r\n * @param query - The query to return a view for\r\n * @param writesCache\r\n * @param serverCache\r\n * @param serverCacheComplete\r\n * @returns Events to raise.\r\n */\r\nfunction syncPointGetView(syncPoint, query, writesCache, serverCache, serverCacheComplete) {\r\n    const queryId = query._queryIdentifier;\r\n    const view = syncPoint.views.get(queryId);\r\n    if (!view) {\r\n        // TODO: make writesCache take flag for complete server node\r\n        let eventCache = writeTreeRefCalcCompleteEventCache(writesCache, serverCacheComplete ? serverCache : null);\r\n        let eventCacheComplete = false;\r\n        if (eventCache) {\r\n            eventCacheComplete = true;\r\n        }\r\n        else if (serverCache instanceof ChildrenNode) {\r\n            eventCache = writeTreeRefCalcCompleteEventChildren(writesCache, serverCache);\r\n            eventCacheComplete = false;\r\n        }\r\n        else {\r\n            eventCache = ChildrenNode.EMPTY_NODE;\r\n            eventCacheComplete = false;\r\n        }\r\n        const viewCache = newViewCache(new CacheNode(eventCache, eventCacheComplete, false), new CacheNode(serverCache, serverCacheComplete, false));\r\n        return new View(query, viewCache);\r\n    }\r\n    return view;\r\n}\r\n/**\r\n * Add an event callback for the specified query.\r\n *\r\n * @param query\r\n * @param eventRegistration\r\n * @param writesCache\r\n * @param serverCache - Complete server cache, if we have it.\r\n * @param serverCacheComplete\r\n * @returns Events to raise.\r\n */\r\nfunction syncPointAddEventRegistration(syncPoint, query, eventRegistration, writesCache, serverCache, serverCacheComplete) {\r\n    const view = syncPointGetView(syncPoint, query, writesCache, serverCache, serverCacheComplete);\r\n    if (!syncPoint.views.has(query._queryIdentifier)) {\r\n        syncPoint.views.set(query._queryIdentifier, view);\r\n    }\r\n    // This is guaranteed to exist now, we just created anything that was missing\r\n    viewAddEventRegistration(view, eventRegistration);\r\n    return viewGetInitialEvents(view, eventRegistration);\r\n}\r\n/**\r\n * Remove event callback(s).  Return cancelEvents if a cancelError is specified.\r\n *\r\n * If query is the default query, we'll check all views for the specified eventRegistration.\r\n * If eventRegistration is null, we'll remove all callbacks for the specified view(s).\r\n *\r\n * @param eventRegistration - If null, remove all callbacks.\r\n * @param cancelError - If a cancelError is provided, appropriate cancel events will be returned.\r\n * @returns removed queries and any cancel events\r\n */\r\nfunction syncPointRemoveEventRegistration(syncPoint, query, eventRegistration, cancelError) {\r\n    const queryId = query._queryIdentifier;\r\n    const removed = [];\r\n    let cancelEvents = [];\r\n    const hadCompleteView = syncPointHasCompleteView(syncPoint);\r\n    if (queryId === 'default') {\r\n        // When you do ref.off(...), we search all views for the registration to remove.\r\n        for (const [viewQueryId, view] of syncPoint.views.entries()) {\r\n            cancelEvents = cancelEvents.concat(viewRemoveEventRegistration(view, eventRegistration, cancelError));\r\n            if (viewIsEmpty(view)) {\r\n                syncPoint.views.delete(viewQueryId);\r\n                // We'll deal with complete views later.\r\n                if (!view.query._queryParams.loadsAllData()) {\r\n                    removed.push(view.query);\r\n                }\r\n            }\r\n        }\r\n    }\r\n    else {\r\n        // remove the callback from the specific view.\r\n        const view = syncPoint.views.get(queryId);\r\n        if (view) {\r\n            cancelEvents = cancelEvents.concat(viewRemoveEventRegistration(view, eventRegistration, cancelError));\r\n            if (viewIsEmpty(view)) {\r\n                syncPoint.views.delete(queryId);\r\n                // We'll deal with complete views later.\r\n                if (!view.query._queryParams.loadsAllData()) {\r\n                    removed.push(view.query);\r\n                }\r\n            }\r\n        }\r\n    }\r\n    if (hadCompleteView && !syncPointHasCompleteView(syncPoint)) {\r\n        // We removed our last complete view.\r\n        removed.push(new (syncPointGetReferenceConstructor())(query._repo, query._path));\r\n    }\r\n    return { removed, events: cancelEvents };\r\n}\r\nfunction syncPointGetQueryViews(syncPoint) {\r\n    const result = [];\r\n    for (const view of syncPoint.views.values()) {\r\n        if (!view.query._queryParams.loadsAllData()) {\r\n            result.push(view);\r\n        }\r\n    }\r\n    return result;\r\n}\r\n/**\r\n * @param path - The path to the desired complete snapshot\r\n * @returns A complete cache, if it exists\r\n */\r\nfunction syncPointGetCompleteServerCache(syncPoint, path) {\r\n    let serverCache = null;\r\n    for (const view of syncPoint.views.values()) {\r\n        serverCache = serverCache || viewGetCompleteServerCache(view, path);\r\n    }\r\n    return serverCache;\r\n}\r\nfunction syncPointViewForQuery(syncPoint, query) {\r\n    const params = query._queryParams;\r\n    if (params.loadsAllData()) {\r\n        return syncPointGetCompleteView(syncPoint);\r\n    }\r\n    else {\r\n        const queryId = query._queryIdentifier;\r\n        return syncPoint.views.get(queryId);\r\n    }\r\n}\r\nfunction syncPointViewExistsForQuery(syncPoint, query) {\r\n    return syncPointViewForQuery(syncPoint, query) != null;\r\n}\r\nfunction syncPointHasCompleteView(syncPoint) {\r\n    return syncPointGetCompleteView(syncPoint) != null;\r\n}\r\nfunction syncPointGetCompleteView(syncPoint) {\r\n    for (const view of syncPoint.views.values()) {\r\n        if (view.query._queryParams.loadsAllData()) {\r\n            return view;\r\n        }\r\n    }\r\n    return null;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nlet referenceConstructor;\r\nfunction syncTreeSetReferenceConstructor(val) {\r\n    assert(!referenceConstructor, '__referenceConstructor has already been defined');\r\n    referenceConstructor = val;\r\n}\r\nfunction syncTreeGetReferenceConstructor() {\r\n    assert(referenceConstructor, 'Reference.ts has not been loaded');\r\n    return referenceConstructor;\r\n}\r\n/**\r\n * Static tracker for next query tag.\r\n */\r\nlet syncTreeNextQueryTag_ = 1;\r\n/**\r\n * SyncTree is the central class for managing event callback registration, data caching, views\r\n * (query processing), and event generation.  There are typically two SyncTree instances for\r\n * each Repo, one for the normal Firebase data, and one for the .info data.\r\n *\r\n * It has a number of responsibilities, including:\r\n *  - Tracking all user event callbacks (registered via addEventRegistration() and removeEventRegistration()).\r\n *  - Applying and caching data changes for user set(), transaction(), and update() calls\r\n *    (applyUserOverwrite(), applyUserMerge()).\r\n *  - Applying and caching data changes for server data changes (applyServerOverwrite(),\r\n *    applyServerMerge()).\r\n *  - Generating user-facing events for server and user changes (all of the apply* methods\r\n *    return the set of events that need to be raised as a result).\r\n *  - Maintaining the appropriate set of server listens to ensure we are always subscribed\r\n *    to the correct set of paths and queries to satisfy the current set of user event\r\n *    callbacks (listens are started/stopped using the provided listenProvider).\r\n *\r\n * NOTE: Although SyncTree tracks event callbacks and calculates events to raise, the actual\r\n * events are returned to the caller rather than raised synchronously.\r\n *\r\n */\r\nclass SyncTree {\r\n    /**\r\n     * @param listenProvider_ - Used by SyncTree to start / stop listening\r\n     *   to server data.\r\n     */\r\n    constructor(listenProvider_) {\r\n        this.listenProvider_ = listenProvider_;\r\n        /**\r\n         * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.\r\n         */\r\n        this.syncPointTree_ = new ImmutableTree(null);\r\n        /**\r\n         * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).\r\n         */\r\n        this.pendingWriteTree_ = newWriteTree();\r\n        this.tagToQueryMap = new Map();\r\n        this.queryToTagMap = new Map();\r\n    }\r\n}\r\n/**\r\n * Apply the data changes for a user-generated set() or transaction() call.\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyUserOverwrite(syncTree, path, newData, writeId, visible) {\r\n    // Record pending write.\r\n    writeTreeAddOverwrite(syncTree.pendingWriteTree_, path, newData, writeId, visible);\r\n    if (!visible) {\r\n        return [];\r\n    }\r\n    else {\r\n        return syncTreeApplyOperationToSyncPoints_(syncTree, new Overwrite(newOperationSourceUser(), path, newData));\r\n    }\r\n}\r\n/**\r\n * Apply the data from a user-generated update() call\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyUserMerge(syncTree, path, changedChildren, writeId) {\r\n    // Record pending merge.\r\n    writeTreeAddMerge(syncTree.pendingWriteTree_, path, changedChildren, writeId);\r\n    const changeTree = ImmutableTree.fromObject(changedChildren);\r\n    return syncTreeApplyOperationToSyncPoints_(syncTree, new Merge(newOperationSourceUser(), path, changeTree));\r\n}\r\n/**\r\n * Acknowledge a pending user write that was previously registered with applyUserOverwrite() or applyUserMerge().\r\n *\r\n * @param revert - True if the given write failed and needs to be reverted\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeAckUserWrite(syncTree, writeId, revert = false) {\r\n    const write = writeTreeGetWrite(syncTree.pendingWriteTree_, writeId);\r\n    const needToReevaluate = writeTreeRemoveWrite(syncTree.pendingWriteTree_, writeId);\r\n    if (!needToReevaluate) {\r\n        return [];\r\n    }\r\n    else {\r\n        let affectedTree = new ImmutableTree(null);\r\n        if (write.snap != null) {\r\n            // overwrite\r\n            affectedTree = affectedTree.set(newEmptyPath(), true);\r\n        }\r\n        else {\r\n            each(write.children, (pathString) => {\r\n                affectedTree = affectedTree.set(new Path(pathString), true);\r\n            });\r\n        }\r\n        return syncTreeApplyOperationToSyncPoints_(syncTree, new AckUserWrite(write.path, affectedTree, revert));\r\n    }\r\n}\r\n/**\r\n * Apply new server data for the specified path..\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyServerOverwrite(syncTree, path, newData) {\r\n    return syncTreeApplyOperationToSyncPoints_(syncTree, new Overwrite(newOperationSourceServer(), path, newData));\r\n}\r\n/**\r\n * Apply new server data to be merged in at the specified path.\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyServerMerge(syncTree, path, changedChildren) {\r\n    const changeTree = ImmutableTree.fromObject(changedChildren);\r\n    return syncTreeApplyOperationToSyncPoints_(syncTree, new Merge(newOperationSourceServer(), path, changeTree));\r\n}\r\n/**\r\n * Apply a listen complete for a query\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyListenComplete(syncTree, path) {\r\n    return syncTreeApplyOperationToSyncPoints_(syncTree, new ListenComplete(newOperationSourceServer(), path));\r\n}\r\n/**\r\n * Apply a listen complete for a tagged query\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyTaggedListenComplete(syncTree, path, tag) {\r\n    const queryKey = syncTreeQueryKeyForTag_(syncTree, tag);\r\n    if (queryKey) {\r\n        const r = syncTreeParseQueryKey_(queryKey);\r\n        const queryPath = r.path, queryId = r.queryId;\r\n        const relativePath = newRelativePath(queryPath, path);\r\n        const op = new ListenComplete(newOperationSourceServerTaggedQuery(queryId), relativePath);\r\n        return syncTreeApplyTaggedOperation_(syncTree, queryPath, op);\r\n    }\r\n    else {\r\n        // We've already removed the query. No big deal, ignore the update\r\n        return [];\r\n    }\r\n}\r\n/**\r\n * Remove event callback(s).\r\n *\r\n * If query is the default query, we'll check all queries for the specified eventRegistration.\r\n * If eventRegistration is null, we'll remove all callbacks for the specified query/queries.\r\n *\r\n * @param eventRegistration - If null, all callbacks are removed.\r\n * @param cancelError - If a cancelError is provided, appropriate cancel events will be returned.\r\n * @returns Cancel events, if cancelError was provided.\r\n */\r\nfunction syncTreeRemoveEventRegistration(syncTree, query, eventRegistration, cancelError) {\r\n    // Find the syncPoint first. Then deal with whether or not it has matching listeners\r\n    const path = query._path;\r\n    const maybeSyncPoint = syncTree.syncPointTree_.get(path);\r\n    let cancelEvents = [];\r\n    // A removal on a default query affects all queries at that location. A removal on an indexed query, even one without\r\n    // other query constraints, does *not* affect all queries at that location. So this check must be for 'default', and\r\n    // not loadsAllData().\r\n    if (maybeSyncPoint &&\r\n        (query._queryIdentifier === 'default' ||\r\n            syncPointViewExistsForQuery(maybeSyncPoint, query))) {\r\n        const removedAndEvents = syncPointRemoveEventRegistration(maybeSyncPoint, query, eventRegistration, cancelError);\r\n        if (syncPointIsEmpty(maybeSyncPoint)) {\r\n            syncTree.syncPointTree_ = syncTree.syncPointTree_.remove(path);\r\n        }\r\n        const removed = removedAndEvents.removed;\r\n        cancelEvents = removedAndEvents.events;\r\n        // We may have just removed one of many listeners and can short-circuit this whole process\r\n        // We may also not have removed a default listener, in which case all of the descendant listeners should already be\r\n        // properly set up.\r\n        //\r\n        // Since indexed queries can shadow if they don't have other query constraints, check for loadsAllData(), instead of\r\n        // queryId === 'default'\r\n        const removingDefault = -1 !==\r\n            removed.findIndex(query => {\r\n                return query._queryParams.loadsAllData();\r\n            });\r\n        const covered = syncTree.syncPointTree_.findOnPath(path, (relativePath, parentSyncPoint) => syncPointHasCompleteView(parentSyncPoint));\r\n        if (removingDefault && !covered) {\r\n            const subtree = syncTree.syncPointTree_.subtree(path);\r\n            // There are potentially child listeners. Determine what if any listens we need to send before executing the\r\n            // removal\r\n            if (!subtree.isEmpty()) {\r\n                // We need to fold over our subtree and collect the listeners to send\r\n                const newViews = syncTreeCollectDistinctViewsForSubTree_(subtree);\r\n                // Ok, we've collected all the listens we need. Set them up.\r\n                for (let i = 0; i < newViews.length; ++i) {\r\n                    const view = newViews[i], newQuery = view.query;\r\n                    const listener = syncTreeCreateListenerForView_(syncTree, view);\r\n                    syncTree.listenProvider_.startListening(syncTreeQueryForListening_(newQuery), syncTreeTagForQuery_(syncTree, newQuery), listener.hashFn, listener.onComplete);\r\n                }\r\n            }\r\n        }\r\n        // If we removed anything and we're not covered by a higher up listen, we need to stop listening on this query\r\n        // The above block has us covered in terms of making sure we're set up on listens lower in the tree.\r\n        // Also, note that if we have a cancelError, it's already been removed at the provider level.\r\n        if (!covered && removed.length > 0 && !cancelError) {\r\n            // If we removed a default, then we weren't listening on any of the other queries here. Just cancel the one\r\n            // default. Otherwise, we need to iterate through and cancel each individual query\r\n            if (removingDefault) {\r\n                // We don't tag default listeners\r\n                const defaultTag = null;\r\n                syncTree.listenProvider_.stopListening(syncTreeQueryForListening_(query), defaultTag);\r\n            }\r\n            else {\r\n                removed.forEach((queryToRemove) => {\r\n                    const tagToRemove = syncTree.queryToTagMap.get(syncTreeMakeQueryKey_(queryToRemove));\r\n                    syncTree.listenProvider_.stopListening(syncTreeQueryForListening_(queryToRemove), tagToRemove);\r\n                });\r\n            }\r\n        }\r\n        // Now, clear all of the tags we're tracking for the removed listens\r\n        syncTreeRemoveTags_(syncTree, removed);\r\n    }\r\n    return cancelEvents;\r\n}\r\n/**\r\n * Apply new server data for the specified tagged query.\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyTaggedQueryOverwrite(syncTree, path, snap, tag) {\r\n    const queryKey = syncTreeQueryKeyForTag_(syncTree, tag);\r\n    if (queryKey != null) {\r\n        const r = syncTreeParseQueryKey_(queryKey);\r\n        const queryPath = r.path, queryId = r.queryId;\r\n        const relativePath = newRelativePath(queryPath, path);\r\n        const op = new Overwrite(newOperationSourceServerTaggedQuery(queryId), relativePath, snap);\r\n        return syncTreeApplyTaggedOperation_(syncTree, queryPath, op);\r\n    }\r\n    else {\r\n        // Query must have been removed already\r\n        return [];\r\n    }\r\n}\r\n/**\r\n * Apply server data to be merged in for the specified tagged query.\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeApplyTaggedQueryMerge(syncTree, path, changedChildren, tag) {\r\n    const queryKey = syncTreeQueryKeyForTag_(syncTree, tag);\r\n    if (queryKey) {\r\n        const r = syncTreeParseQueryKey_(queryKey);\r\n        const queryPath = r.path, queryId = r.queryId;\r\n        const relativePath = newRelativePath(queryPath, path);\r\n        const changeTree = ImmutableTree.fromObject(changedChildren);\r\n        const op = new Merge(newOperationSourceServerTaggedQuery(queryId), relativePath, changeTree);\r\n        return syncTreeApplyTaggedOperation_(syncTree, queryPath, op);\r\n    }\r\n    else {\r\n        // We've already removed the query. No big deal, ignore the update\r\n        return [];\r\n    }\r\n}\r\n/**\r\n * Add an event callback for the specified query.\r\n *\r\n * @returns Events to raise.\r\n */\r\nfunction syncTreeAddEventRegistration(syncTree, query, eventRegistration) {\r\n    const path = query._path;\r\n    let serverCache = null;\r\n    let foundAncestorDefaultView = false;\r\n    // Any covering writes will necessarily be at the root, so really all we need to find is the server cache.\r\n    // Consider optimizing this once there's a better understanding of what actual behavior will be.\r\n    syncTree.syncPointTree_.foreachOnPath(path, (pathToSyncPoint, sp) => {\r\n        const relativePath = newRelativePath(pathToSyncPoint, path);\r\n        serverCache =\r\n            serverCache || syncPointGetCompleteServerCache(sp, relativePath);\r\n        foundAncestorDefaultView =\r\n            foundAncestorDefaultView || syncPointHasCompleteView(sp);\r\n    });\r\n    let syncPoint = syncTree.syncPointTree_.get(path);\r\n    if (!syncPoint) {\r\n        syncPoint = new SyncPoint();\r\n        syncTree.syncPointTree_ = syncTree.syncPointTree_.set(path, syncPoint);\r\n    }\r\n    else {\r\n        foundAncestorDefaultView =\r\n            foundAncestorDefaultView || syncPointHasCompleteView(syncPoint);\r\n        serverCache =\r\n            serverCache || syncPointGetCompleteServerCache(syncPoint, newEmptyPath());\r\n    }\r\n    let serverCacheComplete;\r\n    if (serverCache != null) {\r\n        serverCacheComplete = true;\r\n    }\r\n    else {\r\n        serverCacheComplete = false;\r\n        serverCache = ChildrenNode.EMPTY_NODE;\r\n        const subtree = syncTree.syncPointTree_.subtree(path);\r\n        subtree.foreachChild((childName, childSyncPoint) => {\r\n            const completeCache = syncPointGetCompleteServerCache(childSyncPoint, newEmptyPath());\r\n            if (completeCache) {\r\n                serverCache = serverCache.updateImmediateChild(childName, completeCache);\r\n            }\r\n        });\r\n    }\r\n    const viewAlreadyExists = syncPointViewExistsForQuery(syncPoint, query);\r\n    if (!viewAlreadyExists && !query._queryParams.loadsAllData()) {\r\n        // We need to track a tag for this query\r\n        const queryKey = syncTreeMakeQueryKey_(query);\r\n        assert(!syncTree.queryToTagMap.has(queryKey), 'View does not exist, but we have a tag');\r\n        const tag = syncTreeGetNextQueryTag_();\r\n        syncTree.queryToTagMap.set(queryKey, tag);\r\n        syncTree.tagToQueryMap.set(tag, queryKey);\r\n    }\r\n    const writesCache = writeTreeChildWrites(syncTree.pendingWriteTree_, path);\r\n    let events = syncPointAddEventRegistration(syncPoint, query, eventRegistration, writesCache, serverCache, serverCacheComplete);\r\n    if (!viewAlreadyExists && !foundAncestorDefaultView) {\r\n        const view = syncPointViewForQuery(syncPoint, query);\r\n        events = events.concat(syncTreeSetupListener_(syncTree, query, view));\r\n    }\r\n    return events;\r\n}\r\n/**\r\n * Returns a complete cache, if we have one, of the data at a particular path. If the location does not have a\r\n * listener above it, we will get a false \"null\". This shouldn't be a problem because transactions will always\r\n * have a listener above, and atomic operations would correctly show a jitter of <increment value> ->\r\n *     <incremented total> as the write is applied locally and then acknowledged at the server.\r\n *\r\n * Note: this method will *include* hidden writes from transaction with applyLocally set to false.\r\n *\r\n * @param path - The path to the data we want\r\n * @param writeIdsToExclude - A specific set to be excluded\r\n */\r\nfunction syncTreeCalcCompleteEventCache(syncTree, path, writeIdsToExclude) {\r\n    const includeHiddenSets = true;\r\n    const writeTree = syncTree.pendingWriteTree_;\r\n    const serverCache = syncTree.syncPointTree_.findOnPath(path, (pathSoFar, syncPoint) => {\r\n        const relativePath = newRelativePath(pathSoFar, path);\r\n        const serverCache = syncPointGetCompleteServerCache(syncPoint, relativePath);\r\n        if (serverCache) {\r\n            return serverCache;\r\n        }\r\n    });\r\n    return writeTreeCalcCompleteEventCache(writeTree, path, serverCache, writeIdsToExclude, includeHiddenSets);\r\n}\r\nfunction syncTreeGetServerValue(syncTree, query) {\r\n    const path = query._path;\r\n    let serverCache = null;\r\n    // Any covering writes will necessarily be at the root, so really all we need to find is the server cache.\r\n    // Consider optimizing this once there's a better understanding of what actual behavior will be.\r\n    syncTree.syncPointTree_.foreachOnPath(path, (pathToSyncPoint, sp) => {\r\n        const relativePath = newRelativePath(pathToSyncPoint, path);\r\n        serverCache =\r\n            serverCache || syncPointGetCompleteServerCache(sp, relativePath);\r\n    });\r\n    let syncPoint = syncTree.syncPointTree_.get(path);\r\n    if (!syncPoint) {\r\n        syncPoint = new SyncPoint();\r\n        syncTree.syncPointTree_ = syncTree.syncPointTree_.set(path, syncPoint);\r\n    }\r\n    else {\r\n        serverCache =\r\n            serverCache || syncPointGetCompleteServerCache(syncPoint, newEmptyPath());\r\n    }\r\n    const serverCacheComplete = serverCache != null;\r\n    const serverCacheNode = serverCacheComplete\r\n        ? new CacheNode(serverCache, true, false)\r\n        : null;\r\n    const writesCache = writeTreeChildWrites(syncTree.pendingWriteTree_, query._path);\r\n    const view = syncPointGetView(syncPoint, query, writesCache, serverCacheComplete ? serverCacheNode.getNode() : ChildrenNode.EMPTY_NODE, serverCacheComplete);\r\n    return viewGetCompleteNode(view);\r\n}\r\n/**\r\n * A helper method that visits all descendant and ancestor SyncPoints, applying the operation.\r\n *\r\n * NOTES:\r\n * - Descendant SyncPoints will be visited first (since we raise events depth-first).\r\n *\r\n * - We call applyOperation() on each SyncPoint passing three things:\r\n *   1. A version of the Operation that has been made relative to the SyncPoint location.\r\n *   2. A WriteTreeRef of any writes we have cached at the SyncPoint location.\r\n *   3. A snapshot Node with cached server data, if we have it.\r\n *\r\n * - We concatenate all of the events returned by each SyncPoint and return the result.\r\n */\r\nfunction syncTreeApplyOperationToSyncPoints_(syncTree, operation) {\r\n    return syncTreeApplyOperationHelper_(operation, syncTree.syncPointTree_, \r\n    /*serverCache=*/ null, writeTreeChildWrites(syncTree.pendingWriteTree_, newEmptyPath()));\r\n}\r\n/**\r\n * Recursive helper for applyOperationToSyncPoints_\r\n */\r\nfunction syncTreeApplyOperationHelper_(operation, syncPointTree, serverCache, writesCache) {\r\n    if (pathIsEmpty(operation.path)) {\r\n        return syncTreeApplyOperationDescendantsHelper_(operation, syncPointTree, serverCache, writesCache);\r\n    }\r\n    else {\r\n        const syncPoint = syncPointTree.get(newEmptyPath());\r\n        // If we don't have cached server data, see if we can get it from this SyncPoint.\r\n        if (serverCache == null && syncPoint != null) {\r\n            serverCache = syncPointGetCompleteServerCache(syncPoint, newEmptyPath());\r\n        }\r\n        let events = [];\r\n        const childName = pathGetFront(operation.path);\r\n        const childOperation = operation.operationForChild(childName);\r\n        const childTree = syncPointTree.children.get(childName);\r\n        if (childTree && childOperation) {\r\n            const childServerCache = serverCache\r\n                ? serverCache.getImmediateChild(childName)\r\n                : null;\r\n            const childWritesCache = writeTreeRefChild(writesCache, childName);\r\n            events = events.concat(syncTreeApplyOperationHelper_(childOperation, childTree, childServerCache, childWritesCache));\r\n        }\r\n        if (syncPoint) {\r\n            events = events.concat(syncPointApplyOperation(syncPoint, operation, writesCache, serverCache));\r\n        }\r\n        return events;\r\n    }\r\n}\r\n/**\r\n * Recursive helper for applyOperationToSyncPoints_\r\n */\r\nfunction syncTreeApplyOperationDescendantsHelper_(operation, syncPointTree, serverCache, writesCache) {\r\n    const syncPoint = syncPointTree.get(newEmptyPath());\r\n    // If we don't have cached server data, see if we can get it from this SyncPoint.\r\n    if (serverCache == null && syncPoint != null) {\r\n        serverCache = syncPointGetCompleteServerCache(syncPoint, newEmptyPath());\r\n    }\r\n    let events = [];\r\n    syncPointTree.children.inorderTraversal((childName, childTree) => {\r\n        const childServerCache = serverCache\r\n            ? serverCache.getImmediateChild(childName)\r\n            : null;\r\n        const childWritesCache = writeTreeRefChild(writesCache, childName);\r\n        const childOperation = operation.operationForChild(childName);\r\n        if (childOperation) {\r\n            events = events.concat(syncTreeApplyOperationDescendantsHelper_(childOperation, childTree, childServerCache, childWritesCache));\r\n        }\r\n    });\r\n    if (syncPoint) {\r\n        events = events.concat(syncPointApplyOperation(syncPoint, operation, writesCache, serverCache));\r\n    }\r\n    return events;\r\n}\r\nfunction syncTreeCreateListenerForView_(syncTree, view) {\r\n    const query = view.query;\r\n    const tag = syncTreeTagForQuery_(syncTree, query);\r\n    return {\r\n        hashFn: () => {\r\n            const cache = viewGetServerCache(view) || ChildrenNode.EMPTY_NODE;\r\n            return cache.hash();\r\n        },\r\n        onComplete: (status) => {\r\n            if (status === 'ok') {\r\n                if (tag) {\r\n                    return syncTreeApplyTaggedListenComplete(syncTree, query._path, tag);\r\n                }\r\n                else {\r\n                    return syncTreeApplyListenComplete(syncTree, query._path);\r\n                }\r\n            }\r\n            else {\r\n                // If a listen failed, kill all of the listeners here, not just the one that triggered the error.\r\n                // Note that this may need to be scoped to just this listener if we change permissions on filtered children\r\n                const error = errorForServerCode(status, query);\r\n                return syncTreeRemoveEventRegistration(syncTree, query, \r\n                /*eventRegistration*/ null, error);\r\n            }\r\n        }\r\n    };\r\n}\r\n/**\r\n * Return the tag associated with the given query.\r\n */\r\nfunction syncTreeTagForQuery_(syncTree, query) {\r\n    const queryKey = syncTreeMakeQueryKey_(query);\r\n    return syncTree.queryToTagMap.get(queryKey);\r\n}\r\n/**\r\n * Given a query, computes a \"queryKey\" suitable for use in our queryToTagMap_.\r\n */\r\nfunction syncTreeMakeQueryKey_(query) {\r\n    return query._path.toString() + '$' + query._queryIdentifier;\r\n}\r\n/**\r\n * Return the query associated with the given tag, if we have one\r\n */\r\nfunction syncTreeQueryKeyForTag_(syncTree, tag) {\r\n    return syncTree.tagToQueryMap.get(tag);\r\n}\r\n/**\r\n * Given a queryKey (created by makeQueryKey), parse it back into a path and queryId.\r\n */\r\nfunction syncTreeParseQueryKey_(queryKey) {\r\n    const splitIndex = queryKey.indexOf('$');\r\n    assert(splitIndex !== -1 && splitIndex < queryKey.length - 1, 'Bad queryKey.');\r\n    return {\r\n        queryId: queryKey.substr(splitIndex + 1),\r\n        path: new Path(queryKey.substr(0, splitIndex))\r\n    };\r\n}\r\n/**\r\n * A helper method to apply tagged operations\r\n */\r\nfunction syncTreeApplyTaggedOperation_(syncTree, queryPath, operation) {\r\n    const syncPoint = syncTree.syncPointTree_.get(queryPath);\r\n    assert(syncPoint, \"Missing sync point for query tag that we're tracking\");\r\n    const writesCache = writeTreeChildWrites(syncTree.pendingWriteTree_, queryPath);\r\n    return syncPointApplyOperation(syncPoint, operation, writesCache, null);\r\n}\r\n/**\r\n * This collapses multiple unfiltered views into a single view, since we only need a single\r\n * listener for them.\r\n */\r\nfunction syncTreeCollectDistinctViewsForSubTree_(subtree) {\r\n    return subtree.fold((relativePath, maybeChildSyncPoint, childMap) => {\r\n        if (maybeChildSyncPoint && syncPointHasCompleteView(maybeChildSyncPoint)) {\r\n            const completeView = syncPointGetCompleteView(maybeChildSyncPoint);\r\n            return [completeView];\r\n        }\r\n        else {\r\n            // No complete view here, flatten any deeper listens into an array\r\n            let views = [];\r\n            if (maybeChildSyncPoint) {\r\n                views = syncPointGetQueryViews(maybeChildSyncPoint);\r\n            }\r\n            each(childMap, (_key, childViews) => {\r\n                views = views.concat(childViews);\r\n            });\r\n            return views;\r\n        }\r\n    });\r\n}\r\n/**\r\n * Normalizes a query to a query we send the server for listening\r\n *\r\n * @returns The normalized query\r\n */\r\nfunction syncTreeQueryForListening_(query) {\r\n    if (query._queryParams.loadsAllData() && !query._queryParams.isDefault()) {\r\n        // We treat queries that load all data as default queries\r\n        // Cast is necessary because ref() technically returns Firebase which is actually fb.api.Firebase which inherits\r\n        // from Query\r\n        return new (syncTreeGetReferenceConstructor())(query._repo, query._path);\r\n    }\r\n    else {\r\n        return query;\r\n    }\r\n}\r\nfunction syncTreeRemoveTags_(syncTree, queries) {\r\n    for (let j = 0; j < queries.length; ++j) {\r\n        const removedQuery = queries[j];\r\n        if (!removedQuery._queryParams.loadsAllData()) {\r\n            // We should have a tag for this\r\n            const removedQueryKey = syncTreeMakeQueryKey_(removedQuery);\r\n            const removedQueryTag = syncTree.queryToTagMap.get(removedQueryKey);\r\n            syncTree.queryToTagMap.delete(removedQueryKey);\r\n            syncTree.tagToQueryMap.delete(removedQueryTag);\r\n        }\r\n    }\r\n}\r\n/**\r\n * Static accessor for query tags.\r\n */\r\nfunction syncTreeGetNextQueryTag_() {\r\n    return syncTreeNextQueryTag_++;\r\n}\r\n/**\r\n * For a given new listen, manage the de-duplication of outstanding subscriptions.\r\n *\r\n * @returns This method can return events to support synchronous data sources\r\n */\r\nfunction syncTreeSetupListener_(syncTree, query, view) {\r\n    const path = query._path;\r\n    const tag = syncTreeTagForQuery_(syncTree, query);\r\n    const listener = syncTreeCreateListenerForView_(syncTree, view);\r\n    const events = syncTree.listenProvider_.startListening(syncTreeQueryForListening_(query), tag, listener.hashFn, listener.onComplete);\r\n    const subtree = syncTree.syncPointTree_.subtree(path);\r\n    // The root of this subtree has our query. We're here because we definitely need to send a listen for that, but we\r\n    // may need to shadow other listens as well.\r\n    if (tag) {\r\n        assert(!syncPointHasCompleteView(subtree.value), \"If we're adding a query, it shouldn't be shadowed\");\r\n    }\r\n    else {\r\n        // Shadow everything at or below this location, this is a default listener.\r\n        const queriesToStop = subtree.fold((relativePath, maybeChildSyncPoint, childMap) => {\r\n            if (!pathIsEmpty(relativePath) &&\r\n                maybeChildSyncPoint &&\r\n                syncPointHasCompleteView(maybeChildSyncPoint)) {\r\n                return [syncPointGetCompleteView(maybeChildSyncPoint).query];\r\n            }\r\n            else {\r\n                // No default listener here, flatten any deeper queries into an array\r\n                let queries = [];\r\n                if (maybeChildSyncPoint) {\r\n                    queries = queries.concat(syncPointGetQueryViews(maybeChildSyncPoint).map(view => view.query));\r\n                }\r\n                each(childMap, (_key, childQueries) => {\r\n                    queries = queries.concat(childQueries);\r\n                });\r\n                return queries;\r\n            }\r\n        });\r\n        for (let i = 0; i < queriesToStop.length; ++i) {\r\n            const queryToStop = queriesToStop[i];\r\n            syncTree.listenProvider_.stopListening(syncTreeQueryForListening_(queryToStop), syncTreeTagForQuery_(syncTree, queryToStop));\r\n        }\r\n    }\r\n    return events;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nclass ExistingValueProvider {\r\n    constructor(node_) {\r\n        this.node_ = node_;\r\n    }\r\n    getImmediateChild(childName) {\r\n        const child = this.node_.getImmediateChild(childName);\r\n        return new ExistingValueProvider(child);\r\n    }\r\n    node() {\r\n        return this.node_;\r\n    }\r\n}\r\nclass DeferredValueProvider {\r\n    constructor(syncTree, path) {\r\n        this.syncTree_ = syncTree;\r\n        this.path_ = path;\r\n    }\r\n    getImmediateChild(childName) {\r\n        const childPath = pathChild(this.path_, childName);\r\n        return new DeferredValueProvider(this.syncTree_, childPath);\r\n    }\r\n    node() {\r\n        return syncTreeCalcCompleteEventCache(this.syncTree_, this.path_);\r\n    }\r\n}\r\n/**\r\n * Generate placeholders for deferred values.\r\n */\r\nconst generateWithValues = function (values) {\r\n    values = values || {};\r\n    values['timestamp'] = values['timestamp'] || new Date().getTime();\r\n    return values;\r\n};\r\n/**\r\n * Value to use when firing local events. When writing server values, fire\r\n * local events with an approximate value, otherwise return value as-is.\r\n */\r\nconst resolveDeferredLeafValue = function (value, existingVal, serverValues) {\r\n    if (!value || typeof value !== 'object') {\r\n        return value;\r\n    }\r\n    assert('.sv' in value, 'Unexpected leaf node or priority contents');\r\n    if (typeof value['.sv'] === 'string') {\r\n        return resolveScalarDeferredValue(value['.sv'], existingVal, serverValues);\r\n    }\r\n    else if (typeof value['.sv'] === 'object') {\r\n        return resolveComplexDeferredValue(value['.sv'], existingVal);\r\n    }\r\n    else {\r\n        assert(false, 'Unexpected server value: ' + JSON.stringify(value, null, 2));\r\n    }\r\n};\r\nconst resolveScalarDeferredValue = function (op, existing, serverValues) {\r\n    switch (op) {\r\n        case 'timestamp':\r\n            return serverValues['timestamp'];\r\n        default:\r\n            assert(false, 'Unexpected server value: ' + op);\r\n    }\r\n};\r\nconst resolveComplexDeferredValue = function (op, existing, unused) {\r\n    if (!op.hasOwnProperty('increment')) {\r\n        assert(false, 'Unexpected server value: ' + JSON.stringify(op, null, 2));\r\n    }\r\n    const delta = op['increment'];\r\n    if (typeof delta !== 'number') {\r\n        assert(false, 'Unexpected increment value: ' + delta);\r\n    }\r\n    const existingNode = existing.node();\r\n    assert(existingNode !== null && typeof existingNode !== 'undefined', 'Expected ChildrenNode.EMPTY_NODE for nulls');\r\n    // Incrementing a non-number sets the value to the incremented amount\r\n    if (!existingNode.isLeafNode()) {\r\n        return delta;\r\n    }\r\n    const leaf = existingNode;\r\n    const existingVal = leaf.getValue();\r\n    if (typeof existingVal !== 'number') {\r\n        return delta;\r\n    }\r\n    // No need to do over/underflow arithmetic here because JS only handles floats under the covers\r\n    return existingVal + delta;\r\n};\r\n/**\r\n * Recursively replace all deferred values and priorities in the tree with the\r\n * specified generated replacement values.\r\n * @param path - path to which write is relative\r\n * @param node - new data written at path\r\n * @param syncTree - current data\r\n */\r\nconst resolveDeferredValueTree = function (path, node, syncTree, serverValues) {\r\n    return resolveDeferredValue(node, new DeferredValueProvider(syncTree, path), serverValues);\r\n};\r\n/**\r\n * Recursively replace all deferred values and priorities in the node with the\r\n * specified generated replacement values.  If there are no server values in the node,\r\n * it'll be returned as-is.\r\n */\r\nconst resolveDeferredValueSnapshot = function (node, existing, serverValues) {\r\n    return resolveDeferredValue(node, new ExistingValueProvider(existing), serverValues);\r\n};\r\nfunction resolveDeferredValue(node, existingVal, serverValues) {\r\n    const rawPri = node.getPriority().val();\r\n    const priority = resolveDeferredLeafValue(rawPri, existingVal.getImmediateChild('.priority'), serverValues);\r\n    let newNode;\r\n    if (node.isLeafNode()) {\r\n        const leafNode = node;\r\n        const value = resolveDeferredLeafValue(leafNode.getValue(), existingVal, serverValues);\r\n        if (value !== leafNode.getValue() ||\r\n            priority !== leafNode.getPriority().val()) {\r\n            return new LeafNode(value, nodeFromJSON(priority));\r\n        }\r\n        else {\r\n            return node;\r\n        }\r\n    }\r\n    else {\r\n        const childrenNode = node;\r\n        newNode = childrenNode;\r\n        if (priority !== childrenNode.getPriority().val()) {\r\n            newNode = newNode.updatePriority(new LeafNode(priority));\r\n        }\r\n        childrenNode.forEachChild(PRIORITY_INDEX, (childName, childNode) => {\r\n            const newChildNode = resolveDeferredValue(childNode, existingVal.getImmediateChild(childName), serverValues);\r\n            if (newChildNode !== childNode) {\r\n                newNode = newNode.updateImmediateChild(childName, newChildNode);\r\n            }\r\n        });\r\n        return newNode;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A light-weight tree, traversable by path.  Nodes can have both values and children.\r\n * Nodes are not enumerated (by forEachChild) unless they have a value or non-empty\r\n * children.\r\n */\r\nclass Tree {\r\n    /**\r\n     * @param name - Optional name of the node.\r\n     * @param parent - Optional parent node.\r\n     * @param node - Optional node to wrap.\r\n     */\r\n    constructor(name = '', parent = null, node = { children: {}, childCount: 0 }) {\r\n        this.name = name;\r\n        this.parent = parent;\r\n        this.node = node;\r\n    }\r\n}\r\n/**\r\n * Returns a sub-Tree for the given path.\r\n *\r\n * @param pathObj - Path to look up.\r\n * @returns Tree for path.\r\n */\r\nfunction treeSubTree(tree, pathObj) {\r\n    // TODO: Require pathObj to be Path?\r\n    let path = pathObj instanceof Path ? pathObj : new Path(pathObj);\r\n    let child = tree, next = pathGetFront(path);\r\n    while (next !== null) {\r\n        const childNode = safeGet(child.node.children, next) || {\r\n            children: {},\r\n            childCount: 0\r\n        };\r\n        child = new Tree(next, child, childNode);\r\n        path = pathPopFront(path);\r\n        next = pathGetFront(path);\r\n    }\r\n    return child;\r\n}\r\n/**\r\n * Returns the data associated with this tree node.\r\n *\r\n * @returns The data or null if no data exists.\r\n */\r\nfunction treeGetValue(tree) {\r\n    return tree.node.value;\r\n}\r\n/**\r\n * Sets data to this tree node.\r\n *\r\n * @param value - Value to set.\r\n */\r\nfunction treeSetValue(tree, value) {\r\n    tree.node.value = value;\r\n    treeUpdateParents(tree);\r\n}\r\n/**\r\n * @returns Whether the tree has any children.\r\n */\r\nfunction treeHasChildren(tree) {\r\n    return tree.node.childCount > 0;\r\n}\r\n/**\r\n * @returns Whethe rthe tree is empty (no value or children).\r\n */\r\nfunction treeIsEmpty(tree) {\r\n    return treeGetValue(tree) === undefined && !treeHasChildren(tree);\r\n}\r\n/**\r\n * Calls action for each child of this tree node.\r\n *\r\n * @param action - Action to be called for each child.\r\n */\r\nfunction treeForEachChild(tree, action) {\r\n    each(tree.node.children, (child, childTree) => {\r\n        action(new Tree(child, tree, childTree));\r\n    });\r\n}\r\n/**\r\n * Does a depth-first traversal of this node's descendants, calling action for each one.\r\n *\r\n * @param action - Action to be called for each child.\r\n * @param includeSelf - Whether to call action on this node as well. Defaults to\r\n *   false.\r\n * @param childrenFirst - Whether to call action on children before calling it on\r\n *   parent.\r\n */\r\nfunction treeForEachDescendant(tree, action, includeSelf, childrenFirst) {\r\n    if (includeSelf && !childrenFirst) {\r\n        action(tree);\r\n    }\r\n    treeForEachChild(tree, child => {\r\n        treeForEachDescendant(child, action, true, childrenFirst);\r\n    });\r\n    if (includeSelf && childrenFirst) {\r\n        action(tree);\r\n    }\r\n}\r\n/**\r\n * Calls action on each ancestor node.\r\n *\r\n * @param action - Action to be called on each parent; return\r\n *   true to abort.\r\n * @param includeSelf - Whether to call action on this node as well.\r\n * @returns true if the action callback returned true.\r\n */\r\nfunction treeForEachAncestor(tree, action, includeSelf) {\r\n    let node = includeSelf ? tree : tree.parent;\r\n    while (node !== null) {\r\n        if (action(node)) {\r\n            return true;\r\n        }\r\n        node = node.parent;\r\n    }\r\n    return false;\r\n}\r\n/**\r\n * @returns The path of this tree node, as a Path.\r\n */\r\nfunction treeGetPath(tree) {\r\n    return new Path(tree.parent === null\r\n        ? tree.name\r\n        : treeGetPath(tree.parent) + '/' + tree.name);\r\n}\r\n/**\r\n * Adds or removes this child from its parent based on whether it's empty or not.\r\n */\r\nfunction treeUpdateParents(tree) {\r\n    if (tree.parent !== null) {\r\n        treeUpdateChild(tree.parent, tree.name, tree);\r\n    }\r\n}\r\n/**\r\n * Adds or removes the passed child to this tree node, depending on whether it's empty.\r\n *\r\n * @param childName - The name of the child to update.\r\n * @param child - The child to update.\r\n */\r\nfunction treeUpdateChild(tree, childName, child) {\r\n    const childEmpty = treeIsEmpty(child);\r\n    const childExists = contains(tree.node.children, childName);\r\n    if (childEmpty && childExists) {\r\n        delete tree.node.children[childName];\r\n        tree.node.childCount--;\r\n        treeUpdateParents(tree);\r\n    }\r\n    else if (!childEmpty && !childExists) {\r\n        tree.node.children[childName] = child.node;\r\n        tree.node.childCount++;\r\n        treeUpdateParents(tree);\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * True for invalid Firebase keys\r\n */\r\nconst INVALID_KEY_REGEX_ = /[\\[\\].#$\\/\\u0000-\\u001F\\u007F]/;\r\n/**\r\n * True for invalid Firebase paths.\r\n * Allows '/' in paths.\r\n */\r\nconst INVALID_PATH_REGEX_ = /[\\[\\].#$\\u0000-\\u001F\\u007F]/;\r\n/**\r\n * Maximum number of characters to allow in leaf value\r\n */\r\nconst MAX_LEAF_SIZE_ = 10 * 1024 * 1024;\r\nconst isValidKey = function (key) {\r\n    return (typeof key === 'string' && key.length !== 0 && !INVALID_KEY_REGEX_.test(key));\r\n};\r\nconst isValidPathString = function (pathString) {\r\n    return (typeof pathString === 'string' &&\r\n        pathString.length !== 0 &&\r\n        !INVALID_PATH_REGEX_.test(pathString));\r\n};\r\nconst isValidRootPathString = function (pathString) {\r\n    if (pathString) {\r\n        // Allow '/.info/' at the beginning.\r\n        pathString = pathString.replace(/^\\/*\\.info(\\/|$)/, '/');\r\n    }\r\n    return isValidPathString(pathString);\r\n};\r\nconst isValidPriority = function (priority) {\r\n    return (priority === null ||\r\n        typeof priority === 'string' ||\r\n        (typeof priority === 'number' && !isInvalidJSONNumber(priority)) ||\r\n        (priority &&\r\n            typeof priority === 'object' &&\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            contains(priority, '.sv')));\r\n};\r\n/**\r\n * Pre-validate a datum passed as an argument to Firebase function.\r\n */\r\nconst validateFirebaseDataArg = function (fnName, value, path, optional) {\r\n    if (optional && value === undefined) {\r\n        return;\r\n    }\r\n    validateFirebaseData(errorPrefix(fnName, 'value'), value, path);\r\n};\r\n/**\r\n * Validate a data object client-side before sending to server.\r\n */\r\nconst validateFirebaseData = function (errorPrefix, data, path_) {\r\n    const path = path_ instanceof Path ? new ValidationPath(path_, errorPrefix) : path_;\r\n    if (data === undefined) {\r\n        throw new Error(errorPrefix + 'contains undefined ' + validationPathToErrorString(path));\r\n    }\r\n    if (typeof data === 'function') {\r\n        throw new Error(errorPrefix +\r\n            'contains a function ' +\r\n            validationPathToErrorString(path) +\r\n            ' with contents = ' +\r\n            data.toString());\r\n    }\r\n    if (isInvalidJSONNumber(data)) {\r\n        throw new Error(errorPrefix +\r\n            'contains ' +\r\n            data.toString() +\r\n            ' ' +\r\n            validationPathToErrorString(path));\r\n    }\r\n    // Check max leaf size, but try to avoid the utf8 conversion if we can.\r\n    if (typeof data === 'string' &&\r\n        data.length > MAX_LEAF_SIZE_ / 3 &&\r\n        stringLength(data) > MAX_LEAF_SIZE_) {\r\n        throw new Error(errorPrefix +\r\n            'contains a string greater than ' +\r\n            MAX_LEAF_SIZE_ +\r\n            ' utf8 bytes ' +\r\n            validationPathToErrorString(path) +\r\n            \" ('\" +\r\n            data.substring(0, 50) +\r\n            \"...')\");\r\n    }\r\n    // TODO = Perf = Consider combining the recursive validation of keys into NodeFromJSON\r\n    // to save extra walking of large objects.\r\n    if (data && typeof data === 'object') {\r\n        let hasDotValue = false;\r\n        let hasActualChild = false;\r\n        each(data, (key, value) => {\r\n            if (key === '.value') {\r\n                hasDotValue = true;\r\n            }\r\n            else if (key !== '.priority' && key !== '.sv') {\r\n                hasActualChild = true;\r\n                if (!isValidKey(key)) {\r\n                    throw new Error(errorPrefix +\r\n                        ' contains an invalid key (' +\r\n                        key +\r\n                        ') ' +\r\n                        validationPathToErrorString(path) +\r\n                        '.  Keys must be non-empty strings ' +\r\n                        'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n                }\r\n            }\r\n            validationPathPush(path, key);\r\n            validateFirebaseData(errorPrefix, value, path);\r\n            validationPathPop(path);\r\n        });\r\n        if (hasDotValue && hasActualChild) {\r\n            throw new Error(errorPrefix +\r\n                ' contains \".value\" child ' +\r\n                validationPathToErrorString(path) +\r\n                ' in addition to actual children.');\r\n        }\r\n    }\r\n};\r\n/**\r\n * Pre-validate paths passed in the firebase function.\r\n */\r\nconst validateFirebaseMergePaths = function (errorPrefix, mergePaths) {\r\n    let i, curPath;\r\n    for (i = 0; i < mergePaths.length; i++) {\r\n        curPath = mergePaths[i];\r\n        const keys = pathSlice(curPath);\r\n        for (let j = 0; j < keys.length; j++) {\r\n            if (keys[j] === '.priority' && j === keys.length - 1) ;\r\n            else if (!isValidKey(keys[j])) {\r\n                throw new Error(errorPrefix +\r\n                    'contains an invalid key (' +\r\n                    keys[j] +\r\n                    ') in path ' +\r\n                    curPath.toString() +\r\n                    '. Keys must be non-empty strings ' +\r\n                    'and can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\"');\r\n            }\r\n        }\r\n    }\r\n    // Check that update keys are not descendants of each other.\r\n    // We rely on the property that sorting guarantees that ancestors come\r\n    // right before descendants.\r\n    mergePaths.sort(pathCompare);\r\n    let prevPath = null;\r\n    for (i = 0; i < mergePaths.length; i++) {\r\n        curPath = mergePaths[i];\r\n        if (prevPath !== null && pathContains(prevPath, curPath)) {\r\n            throw new Error(errorPrefix +\r\n                'contains a path ' +\r\n                prevPath.toString() +\r\n                ' that is ancestor of another path ' +\r\n                curPath.toString());\r\n        }\r\n        prevPath = curPath;\r\n    }\r\n};\r\n/**\r\n * pre-validate an object passed as an argument to firebase function (\r\n * must be an object - e.g. for firebase.update()).\r\n */\r\nconst validateFirebaseMergeDataArg = function (fnName, data, path, optional) {\r\n    if (optional && data === undefined) {\r\n        return;\r\n    }\r\n    const errorPrefix$1 = errorPrefix(fnName, 'values');\r\n    if (!(data && typeof data === 'object') || Array.isArray(data)) {\r\n        throw new Error(errorPrefix$1 + ' must be an object containing the children to replace.');\r\n    }\r\n    const mergePaths = [];\r\n    each(data, (key, value) => {\r\n        const curPath = new Path(key);\r\n        validateFirebaseData(errorPrefix$1, value, pathChild(path, curPath));\r\n        if (pathGetBack(curPath) === '.priority') {\r\n            if (!isValidPriority(value)) {\r\n                throw new Error(errorPrefix$1 +\r\n                    \"contains an invalid value for '\" +\r\n                    curPath.toString() +\r\n                    \"', which must be a valid \" +\r\n                    'Firebase priority (a string, finite number, server value, or null).');\r\n            }\r\n        }\r\n        mergePaths.push(curPath);\r\n    });\r\n    validateFirebaseMergePaths(errorPrefix$1, mergePaths);\r\n};\r\nconst validatePriority = function (fnName, priority, optional) {\r\n    if (optional && priority === undefined) {\r\n        return;\r\n    }\r\n    if (isInvalidJSONNumber(priority)) {\r\n        throw new Error(errorPrefix(fnName, 'priority') +\r\n            'is ' +\r\n            priority.toString() +\r\n            ', but must be a valid Firebase priority (a string, finite number, ' +\r\n            'server value, or null).');\r\n    }\r\n    // Special case to allow importing data with a .sv.\r\n    if (!isValidPriority(priority)) {\r\n        throw new Error(errorPrefix(fnName, 'priority') +\r\n            'must be a valid Firebase priority ' +\r\n            '(a string, finite number, server value, or null).');\r\n    }\r\n};\r\nconst validateKey = function (fnName, argumentName, key, optional) {\r\n    if (optional && key === undefined) {\r\n        return;\r\n    }\r\n    if (!isValidKey(key)) {\r\n        throw new Error(errorPrefix(fnName, argumentName) +\r\n            'was an invalid key = \"' +\r\n            key +\r\n            '\".  Firebase keys must be non-empty strings and ' +\r\n            'can\\'t contain \".\", \"#\", \"$\", \"/\", \"[\", or \"]\").');\r\n    }\r\n};\r\n/**\r\n * @internal\r\n */\r\nconst validatePathString = function (fnName, argumentName, pathString, optional) {\r\n    if (optional && pathString === undefined) {\r\n        return;\r\n    }\r\n    if (!isValidPathString(pathString)) {\r\n        throw new Error(errorPrefix(fnName, argumentName) +\r\n            'was an invalid path = \"' +\r\n            pathString +\r\n            '\". Paths must be non-empty strings and ' +\r\n            'can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\"');\r\n    }\r\n};\r\nconst validateRootPathString = function (fnName, argumentName, pathString, optional) {\r\n    if (pathString) {\r\n        // Allow '/.info/' at the beginning.\r\n        pathString = pathString.replace(/^\\/*\\.info(\\/|$)/, '/');\r\n    }\r\n    validatePathString(fnName, argumentName, pathString, optional);\r\n};\r\n/**\r\n * @internal\r\n */\r\nconst validateWritablePath = function (fnName, path) {\r\n    if (pathGetFront(path) === '.info') {\r\n        throw new Error(fnName + \" failed = Can't modify data under /.info/\");\r\n    }\r\n};\r\nconst validateUrl = function (fnName, parsedUrl) {\r\n    // TODO = Validate server better.\r\n    const pathString = parsedUrl.path.toString();\r\n    if (!(typeof parsedUrl.repoInfo.host === 'string') ||\r\n        parsedUrl.repoInfo.host.length === 0 ||\r\n        (!isValidKey(parsedUrl.repoInfo.namespace) &&\r\n            parsedUrl.repoInfo.host.split(':')[0] !== 'localhost') ||\r\n        (pathString.length !== 0 && !isValidRootPathString(pathString))) {\r\n        throw new Error(errorPrefix(fnName, 'url') +\r\n            'must be a valid firebase URL and ' +\r\n            'the path can\\'t contain \".\", \"#\", \"$\", \"[\", or \"]\".');\r\n    }\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The event queue serves a few purposes:\r\n * 1. It ensures we maintain event order in the face of event callbacks doing operations that result in more\r\n *    events being queued.\r\n * 2. raiseQueuedEvents() handles being called reentrantly nicely.  That is, if in the course of raising events,\r\n *    raiseQueuedEvents() is called again, the \"inner\" call will pick up raising events where the \"outer\" call\r\n *    left off, ensuring that the events are still raised synchronously and in order.\r\n * 3. You can use raiseEventsAtPath and raiseEventsForChangedPath to ensure only relevant previously-queued\r\n *    events are raised synchronously.\r\n *\r\n * NOTE: This can all go away if/when we move to async events.\r\n *\r\n */\r\nclass EventQueue {\r\n    constructor() {\r\n        this.eventLists_ = [];\r\n        /**\r\n         * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.\r\n         */\r\n        this.recursionDepth_ = 0;\r\n    }\r\n}\r\n/**\r\n * @param eventDataList - The new events to queue.\r\n */\r\nfunction eventQueueQueueEvents(eventQueue, eventDataList) {\r\n    // We group events by path, storing them in a single EventList, to make it easier to skip over them quickly.\r\n    let currList = null;\r\n    for (let i = 0; i < eventDataList.length; i++) {\r\n        const data = eventDataList[i];\r\n        const path = data.getPath();\r\n        if (currList !== null && !pathEquals(path, currList.path)) {\r\n            eventQueue.eventLists_.push(currList);\r\n            currList = null;\r\n        }\r\n        if (currList === null) {\r\n            currList = { events: [], path };\r\n        }\r\n        currList.events.push(data);\r\n    }\r\n    if (currList) {\r\n        eventQueue.eventLists_.push(currList);\r\n    }\r\n}\r\n/**\r\n * Queues the specified events and synchronously raises all events (including previously queued ones)\r\n * for the specified path.\r\n *\r\n * It is assumed that the new events are all for the specified path.\r\n *\r\n * @param path - The path to raise events for.\r\n * @param eventDataList - The new events to raise.\r\n */\r\nfunction eventQueueRaiseEventsAtPath(eventQueue, path, eventDataList) {\r\n    eventQueueQueueEvents(eventQueue, eventDataList);\r\n    eventQueueRaiseQueuedEventsMatchingPredicate(eventQueue, eventPath => pathEquals(eventPath, path));\r\n}\r\n/**\r\n * Queues the specified events and synchronously raises all events (including previously queued ones) for\r\n * locations related to the specified change path (i.e. all ancestors and descendants).\r\n *\r\n * It is assumed that the new events are all related (ancestor or descendant) to the specified path.\r\n *\r\n * @param changedPath - The path to raise events for.\r\n * @param eventDataList - The events to raise\r\n */\r\nfunction eventQueueRaiseEventsForChangedPath(eventQueue, changedPath, eventDataList) {\r\n    eventQueueQueueEvents(eventQueue, eventDataList);\r\n    eventQueueRaiseQueuedEventsMatchingPredicate(eventQueue, eventPath => pathContains(eventPath, changedPath) ||\r\n        pathContains(changedPath, eventPath));\r\n}\r\nfunction eventQueueRaiseQueuedEventsMatchingPredicate(eventQueue, predicate) {\r\n    eventQueue.recursionDepth_++;\r\n    let sentAll = true;\r\n    for (let i = 0; i < eventQueue.eventLists_.length; i++) {\r\n        const eventList = eventQueue.eventLists_[i];\r\n        if (eventList) {\r\n            const eventPath = eventList.path;\r\n            if (predicate(eventPath)) {\r\n                eventListRaise(eventQueue.eventLists_[i]);\r\n                eventQueue.eventLists_[i] = null;\r\n            }\r\n            else {\r\n                sentAll = false;\r\n            }\r\n        }\r\n    }\r\n    if (sentAll) {\r\n        eventQueue.eventLists_ = [];\r\n    }\r\n    eventQueue.recursionDepth_--;\r\n}\r\n/**\r\n * Iterates through the list and raises each event\r\n */\r\nfunction eventListRaise(eventList) {\r\n    for (let i = 0; i < eventList.events.length; i++) {\r\n        const eventData = eventList.events[i];\r\n        if (eventData !== null) {\r\n            eventList.events[i] = null;\r\n            const eventFn = eventData.getEventRunner();\r\n            if (logger) {\r\n                log('event: ' + eventData.toString());\r\n            }\r\n            exceptionGuard(eventFn);\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst INTERRUPT_REASON = 'repo_interrupt';\r\n/**\r\n * If a transaction does not succeed after 25 retries, we abort it. Among other\r\n * things this ensure that if there's ever a bug causing a mismatch between\r\n * client / server hashes for some data, we won't retry indefinitely.\r\n */\r\nconst MAX_TRANSACTION_RETRIES = 25;\r\n/**\r\n * A connection to a single data repository.\r\n */\r\nclass Repo {\r\n    constructor(repoInfo_, forceRestClient_, authTokenProvider_, appCheckProvider_) {\r\n        this.repoInfo_ = repoInfo_;\r\n        this.forceRestClient_ = forceRestClient_;\r\n        this.authTokenProvider_ = authTokenProvider_;\r\n        this.appCheckProvider_ = appCheckProvider_;\r\n        this.dataUpdateCount = 0;\r\n        this.statsListener_ = null;\r\n        this.eventQueue_ = new EventQueue();\r\n        this.nextWriteId_ = 1;\r\n        this.interceptServerDataCallback_ = null;\r\n        /** A list of data pieces and paths to be set when this client disconnects. */\r\n        this.onDisconnect_ = newSparseSnapshotTree();\r\n        /** Stores queues of outstanding transactions for Firebase locations. */\r\n        this.transactionQueueTree_ = new Tree();\r\n        // TODO: This should be @private but it's used by test_access.js and internal.js\r\n        this.persistentConnection_ = null;\r\n        // This key is intentionally not updated if RepoInfo is later changed or replaced\r\n        this.key = this.repoInfo_.toURLString();\r\n    }\r\n    /**\r\n     * @returns The URL corresponding to the root of this Firebase.\r\n     */\r\n    toString() {\r\n        return ((this.repoInfo_.secure ? 'https://' : 'http://') + this.repoInfo_.host);\r\n    }\r\n}\r\nfunction repoStart(repo, appId, authOverride) {\r\n    repo.stats_ = statsManagerGetCollection(repo.repoInfo_);\r\n    if (repo.forceRestClient_ || beingCrawled()) {\r\n        repo.server_ = new ReadonlyRestClient(repo.repoInfo_, (pathString, data, isMerge, tag) => {\r\n            repoOnDataUpdate(repo, pathString, data, isMerge, tag);\r\n        }, repo.authTokenProvider_, repo.appCheckProvider_);\r\n        // Minor hack: Fire onConnect immediately, since there's no actual connection.\r\n        setTimeout(() => repoOnConnectStatus(repo, /* connectStatus= */ true), 0);\r\n    }\r\n    else {\r\n        // Validate authOverride\r\n        if (typeof authOverride !== 'undefined' && authOverride !== null) {\r\n            if (typeof authOverride !== 'object') {\r\n                throw new Error('Only objects are supported for option databaseAuthVariableOverride');\r\n            }\r\n            try {\r\n                stringify(authOverride);\r\n            }\r\n            catch (e) {\r\n                throw new Error('Invalid authOverride provided: ' + e);\r\n            }\r\n        }\r\n        repo.persistentConnection_ = new PersistentConnection(repo.repoInfo_, appId, (pathString, data, isMerge, tag) => {\r\n            repoOnDataUpdate(repo, pathString, data, isMerge, tag);\r\n        }, (connectStatus) => {\r\n            repoOnConnectStatus(repo, connectStatus);\r\n        }, (updates) => {\r\n            repoOnServerInfoUpdate(repo, updates);\r\n        }, repo.authTokenProvider_, repo.appCheckProvider_, authOverride);\r\n        repo.server_ = repo.persistentConnection_;\r\n    }\r\n    repo.authTokenProvider_.addTokenChangeListener(token => {\r\n        repo.server_.refreshAuthToken(token);\r\n    });\r\n    repo.appCheckProvider_.addTokenChangeListener(result => {\r\n        repo.server_.refreshAppCheckToken(result.token);\r\n    });\r\n    // In the case of multiple Repos for the same repoInfo (i.e. there are multiple Firebase.Contexts being used),\r\n    // we only want to create one StatsReporter.  As such, we'll report stats over the first Repo created.\r\n    repo.statsReporter_ = statsManagerGetOrCreateReporter(repo.repoInfo_, () => new StatsReporter(repo.stats_, repo.server_));\r\n    // Used for .info.\r\n    repo.infoData_ = new SnapshotHolder();\r\n    repo.infoSyncTree_ = new SyncTree({\r\n        startListening: (query, tag, currentHashFn, onComplete) => {\r\n            let infoEvents = [];\r\n            const node = repo.infoData_.getNode(query._path);\r\n            // This is possibly a hack, but we have different semantics for .info endpoints. We don't raise null events\r\n            // on initial data...\r\n            if (!node.isEmpty()) {\r\n                infoEvents = syncTreeApplyServerOverwrite(repo.infoSyncTree_, query._path, node);\r\n                setTimeout(() => {\r\n                    onComplete('ok');\r\n                }, 0);\r\n            }\r\n            return infoEvents;\r\n        },\r\n        stopListening: () => { }\r\n    });\r\n    repoUpdateInfo(repo, 'connected', false);\r\n    repo.serverSyncTree_ = new SyncTree({\r\n        startListening: (query, tag, currentHashFn, onComplete) => {\r\n            repo.server_.listen(query, currentHashFn, tag, (status, data) => {\r\n                const events = onComplete(status, data);\r\n                eventQueueRaiseEventsForChangedPath(repo.eventQueue_, query._path, events);\r\n            });\r\n            // No synchronous events for network-backed sync trees\r\n            return [];\r\n        },\r\n        stopListening: (query, tag) => {\r\n            repo.server_.unlisten(query, tag);\r\n        }\r\n    });\r\n}\r\n/**\r\n * @returns The time in milliseconds, taking the server offset into account if we have one.\r\n */\r\nfunction repoServerTime(repo) {\r\n    const offsetNode = repo.infoData_.getNode(new Path('.info/serverTimeOffset'));\r\n    const offset = offsetNode.val() || 0;\r\n    return new Date().getTime() + offset;\r\n}\r\n/**\r\n * Generate ServerValues using some variables from the repo object.\r\n */\r\nfunction repoGenerateServerValues(repo) {\r\n    return generateWithValues({\r\n        timestamp: repoServerTime(repo)\r\n    });\r\n}\r\n/**\r\n * Called by realtime when we get new messages from the server.\r\n */\r\nfunction repoOnDataUpdate(repo, pathString, data, isMerge, tag) {\r\n    // For testing.\r\n    repo.dataUpdateCount++;\r\n    const path = new Path(pathString);\r\n    data = repo.interceptServerDataCallback_\r\n        ? repo.interceptServerDataCallback_(pathString, data)\r\n        : data;\r\n    let events = [];\r\n    if (tag) {\r\n        if (isMerge) {\r\n            const taggedChildren = map(data, (raw) => nodeFromJSON(raw));\r\n            events = syncTreeApplyTaggedQueryMerge(repo.serverSyncTree_, path, taggedChildren, tag);\r\n        }\r\n        else {\r\n            const taggedSnap = nodeFromJSON(data);\r\n            events = syncTreeApplyTaggedQueryOverwrite(repo.serverSyncTree_, path, taggedSnap, tag);\r\n        }\r\n    }\r\n    else if (isMerge) {\r\n        const changedChildren = map(data, (raw) => nodeFromJSON(raw));\r\n        events = syncTreeApplyServerMerge(repo.serverSyncTree_, path, changedChildren);\r\n    }\r\n    else {\r\n        const snap = nodeFromJSON(data);\r\n        events = syncTreeApplyServerOverwrite(repo.serverSyncTree_, path, snap);\r\n    }\r\n    let affectedPath = path;\r\n    if (events.length > 0) {\r\n        // Since we have a listener outstanding for each transaction, receiving any events\r\n        // is a proxy for some change having occurred.\r\n        affectedPath = repoRerunTransactions(repo, path);\r\n    }\r\n    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, events);\r\n}\r\nfunction repoOnConnectStatus(repo, connectStatus) {\r\n    repoUpdateInfo(repo, 'connected', connectStatus);\r\n    if (connectStatus === false) {\r\n        repoRunOnDisconnectEvents(repo);\r\n    }\r\n}\r\nfunction repoOnServerInfoUpdate(repo, updates) {\r\n    each(updates, (key, value) => {\r\n        repoUpdateInfo(repo, key, value);\r\n    });\r\n}\r\nfunction repoUpdateInfo(repo, pathString, value) {\r\n    const path = new Path('/.info/' + pathString);\r\n    const newNode = nodeFromJSON(value);\r\n    repo.infoData_.updateSnapshot(path, newNode);\r\n    const events = syncTreeApplyServerOverwrite(repo.infoSyncTree_, path, newNode);\r\n    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);\r\n}\r\nfunction repoGetNextWriteId(repo) {\r\n    return repo.nextWriteId_++;\r\n}\r\n/**\r\n * The purpose of `getValue` is to return the latest known value\r\n * satisfying `query`.\r\n *\r\n * This method will first check for in-memory cached values\r\n * belonging to active listeners. If they are found, such values\r\n * are considered to be the most up-to-date.\r\n *\r\n * If the client is not connected, this method will try to\r\n * establish a connection and request the value for `query`. If\r\n * the client is not able to retrieve the query result, it reports\r\n * an error.\r\n *\r\n * @param query - The query to surface a value for.\r\n */\r\nfunction repoGetValue(repo, query) {\r\n    // Only active queries are cached. There is no persisted cache.\r\n    const cached = syncTreeGetServerValue(repo.serverSyncTree_, query);\r\n    if (cached != null) {\r\n        return Promise.resolve(cached);\r\n    }\r\n    return repo.server_.get(query).then(payload => {\r\n        const node = nodeFromJSON(payload).withIndex(query._queryParams.getIndex());\r\n        const events = syncTreeApplyServerOverwrite(repo.serverSyncTree_, query._path, node);\r\n        eventQueueRaiseEventsAtPath(repo.eventQueue_, query._path, events);\r\n        return Promise.resolve(node);\r\n    }, err => {\r\n        repoLog(repo, 'get for query ' + stringify(query) + ' failed: ' + err);\r\n        return Promise.reject(new Error(err));\r\n    });\r\n}\r\nfunction repoSetWithPriority(repo, path, newVal, newPriority, onComplete) {\r\n    repoLog(repo, 'set', {\r\n        path: path.toString(),\r\n        value: newVal,\r\n        priority: newPriority\r\n    });\r\n    // TODO: Optimize this behavior to either (a) store flag to skip resolving where possible and / or\r\n    // (b) store unresolved paths on JSON parse\r\n    const serverValues = repoGenerateServerValues(repo);\r\n    const newNodeUnresolved = nodeFromJSON(newVal, newPriority);\r\n    const existing = syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path);\r\n    const newNode = resolveDeferredValueSnapshot(newNodeUnresolved, existing, serverValues);\r\n    const writeId = repoGetNextWriteId(repo);\r\n    const events = syncTreeApplyUserOverwrite(repo.serverSyncTree_, path, newNode, writeId, true);\r\n    eventQueueQueueEvents(repo.eventQueue_, events);\r\n    repo.server_.put(path.toString(), newNodeUnresolved.val(/*export=*/ true), (status, errorReason) => {\r\n        const success = status === 'ok';\r\n        if (!success) {\r\n            warn('set at ' + path + ' failed: ' + status);\r\n        }\r\n        const clearEvents = syncTreeAckUserWrite(repo.serverSyncTree_, writeId, !success);\r\n        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, clearEvents);\r\n        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n    });\r\n    const affectedPath = repoAbortTransactions(repo, path);\r\n    repoRerunTransactions(repo, affectedPath);\r\n    // We queued the events above, so just flush the queue here\r\n    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, []);\r\n}\r\nfunction repoUpdate(repo, path, childrenToMerge, onComplete) {\r\n    repoLog(repo, 'update', { path: path.toString(), value: childrenToMerge });\r\n    // Start with our existing data and merge each child into it.\r\n    let empty = true;\r\n    const serverValues = repoGenerateServerValues(repo);\r\n    const changedChildren = {};\r\n    each(childrenToMerge, (changedKey, changedValue) => {\r\n        empty = false;\r\n        changedChildren[changedKey] = resolveDeferredValueTree(pathChild(path, changedKey), nodeFromJSON(changedValue), repo.serverSyncTree_, serverValues);\r\n    });\r\n    if (!empty) {\r\n        const writeId = repoGetNextWriteId(repo);\r\n        const events = syncTreeApplyUserMerge(repo.serverSyncTree_, path, changedChildren, writeId);\r\n        eventQueueQueueEvents(repo.eventQueue_, events);\r\n        repo.server_.merge(path.toString(), childrenToMerge, (status, errorReason) => {\r\n            const success = status === 'ok';\r\n            if (!success) {\r\n                warn('update at ' + path + ' failed: ' + status);\r\n            }\r\n            const clearEvents = syncTreeAckUserWrite(repo.serverSyncTree_, writeId, !success);\r\n            const affectedPath = clearEvents.length > 0 ? repoRerunTransactions(repo, path) : path;\r\n            eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, clearEvents);\r\n            repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n        });\r\n        each(childrenToMerge, (changedPath) => {\r\n            const affectedPath = repoAbortTransactions(repo, pathChild(path, changedPath));\r\n            repoRerunTransactions(repo, affectedPath);\r\n        });\r\n        // We queued the events above, so just flush the queue here\r\n        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, []);\r\n    }\r\n    else {\r\n        log(\"update() called with empty data.  Don't do anything.\");\r\n        repoCallOnCompleteCallback(repo, onComplete, 'ok', undefined);\r\n    }\r\n}\r\n/**\r\n * Applies all of the changes stored up in the onDisconnect_ tree.\r\n */\r\nfunction repoRunOnDisconnectEvents(repo) {\r\n    repoLog(repo, 'onDisconnectEvents');\r\n    const serverValues = repoGenerateServerValues(repo);\r\n    const resolvedOnDisconnectTree = newSparseSnapshotTree();\r\n    sparseSnapshotTreeForEachTree(repo.onDisconnect_, newEmptyPath(), (path, node) => {\r\n        const resolved = resolveDeferredValueTree(path, node, repo.serverSyncTree_, serverValues);\r\n        sparseSnapshotTreeRemember(resolvedOnDisconnectTree, path, resolved);\r\n    });\r\n    let events = [];\r\n    sparseSnapshotTreeForEachTree(resolvedOnDisconnectTree, newEmptyPath(), (path, snap) => {\r\n        events = events.concat(syncTreeApplyServerOverwrite(repo.serverSyncTree_, path, snap));\r\n        const affectedPath = repoAbortTransactions(repo, path);\r\n        repoRerunTransactions(repo, affectedPath);\r\n    });\r\n    repo.onDisconnect_ = newSparseSnapshotTree();\r\n    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, newEmptyPath(), events);\r\n}\r\nfunction repoOnDisconnectCancel(repo, path, onComplete) {\r\n    repo.server_.onDisconnectCancel(path.toString(), (status, errorReason) => {\r\n        if (status === 'ok') {\r\n            sparseSnapshotTreeForget(repo.onDisconnect_, path);\r\n        }\r\n        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n    });\r\n}\r\nfunction repoOnDisconnectSet(repo, path, value, onComplete) {\r\n    const newNode = nodeFromJSON(value);\r\n    repo.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), (status, errorReason) => {\r\n        if (status === 'ok') {\r\n            sparseSnapshotTreeRemember(repo.onDisconnect_, path, newNode);\r\n        }\r\n        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n    });\r\n}\r\nfunction repoOnDisconnectSetWithPriority(repo, path, value, priority, onComplete) {\r\n    const newNode = nodeFromJSON(value, priority);\r\n    repo.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), (status, errorReason) => {\r\n        if (status === 'ok') {\r\n            sparseSnapshotTreeRemember(repo.onDisconnect_, path, newNode);\r\n        }\r\n        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n    });\r\n}\r\nfunction repoOnDisconnectUpdate(repo, path, childrenToMerge, onComplete) {\r\n    if (isEmpty(childrenToMerge)) {\r\n        log(\"onDisconnect().update() called with empty data.  Don't do anything.\");\r\n        repoCallOnCompleteCallback(repo, onComplete, 'ok', undefined);\r\n        return;\r\n    }\r\n    repo.server_.onDisconnectMerge(path.toString(), childrenToMerge, (status, errorReason) => {\r\n        if (status === 'ok') {\r\n            each(childrenToMerge, (childName, childNode) => {\r\n                const newChildNode = nodeFromJSON(childNode);\r\n                sparseSnapshotTreeRemember(repo.onDisconnect_, pathChild(path, childName), newChildNode);\r\n            });\r\n        }\r\n        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);\r\n    });\r\n}\r\nfunction repoAddEventCallbackForQuery(repo, query, eventRegistration) {\r\n    let events;\r\n    if (pathGetFront(query._path) === '.info') {\r\n        events = syncTreeAddEventRegistration(repo.infoSyncTree_, query, eventRegistration);\r\n    }\r\n    else {\r\n        events = syncTreeAddEventRegistration(repo.serverSyncTree_, query, eventRegistration);\r\n    }\r\n    eventQueueRaiseEventsAtPath(repo.eventQueue_, query._path, events);\r\n}\r\nfunction repoRemoveEventCallbackForQuery(repo, query, eventRegistration) {\r\n    // These are guaranteed not to raise events, since we're not passing in a cancelError. However, we can future-proof\r\n    // a little bit by handling the return values anyways.\r\n    let events;\r\n    if (pathGetFront(query._path) === '.info') {\r\n        events = syncTreeRemoveEventRegistration(repo.infoSyncTree_, query, eventRegistration);\r\n    }\r\n    else {\r\n        events = syncTreeRemoveEventRegistration(repo.serverSyncTree_, query, eventRegistration);\r\n    }\r\n    eventQueueRaiseEventsAtPath(repo.eventQueue_, query._path, events);\r\n}\r\nfunction repoInterrupt(repo) {\r\n    if (repo.persistentConnection_) {\r\n        repo.persistentConnection_.interrupt(INTERRUPT_REASON);\r\n    }\r\n}\r\nfunction repoResume(repo) {\r\n    if (repo.persistentConnection_) {\r\n        repo.persistentConnection_.resume(INTERRUPT_REASON);\r\n    }\r\n}\r\nfunction repoLog(repo, ...varArgs) {\r\n    let prefix = '';\r\n    if (repo.persistentConnection_) {\r\n        prefix = repo.persistentConnection_.id + ':';\r\n    }\r\n    log(prefix, ...varArgs);\r\n}\r\nfunction repoCallOnCompleteCallback(repo, callback, status, errorReason) {\r\n    if (callback) {\r\n        exceptionGuard(() => {\r\n            if (status === 'ok') {\r\n                callback(null);\r\n            }\r\n            else {\r\n                const code = (status || 'error').toUpperCase();\r\n                let message = code;\r\n                if (errorReason) {\r\n                    message += ': ' + errorReason;\r\n                }\r\n                const error = new Error(message);\r\n                // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n                error.code = code;\r\n                callback(error);\r\n            }\r\n        });\r\n    }\r\n}\r\n/**\r\n * Creates a new transaction, adds it to the transactions we're tracking, and\r\n * sends it to the server if possible.\r\n *\r\n * @param path - Path at which to do transaction.\r\n * @param transactionUpdate - Update callback.\r\n * @param onComplete - Completion callback.\r\n * @param unwatcher - Function that will be called when the transaction no longer\r\n * need data updates for `path`.\r\n * @param applyLocally - Whether or not to make intermediate results visible\r\n */\r\nfunction repoStartTransaction(repo, path, transactionUpdate, onComplete, unwatcher, applyLocally) {\r\n    repoLog(repo, 'transaction on ' + path);\r\n    // Initialize transaction.\r\n    const transaction = {\r\n        path,\r\n        update: transactionUpdate,\r\n        onComplete,\r\n        // One of TransactionStatus enums.\r\n        status: null,\r\n        // Used when combining transactions at different locations to figure out\r\n        // which one goes first.\r\n        order: LUIDGenerator(),\r\n        // Whether to raise local events for this transaction.\r\n        applyLocally,\r\n        // Count of how many times we've retried the transaction.\r\n        retryCount: 0,\r\n        // Function to call to clean up our .on() listener.\r\n        unwatcher,\r\n        // Stores why a transaction was aborted.\r\n        abortReason: null,\r\n        currentWriteId: null,\r\n        currentInputSnapshot: null,\r\n        currentOutputSnapshotRaw: null,\r\n        currentOutputSnapshotResolved: null\r\n    };\r\n    // Run transaction initially.\r\n    const currentState = repoGetLatestState(repo, path, undefined);\r\n    transaction.currentInputSnapshot = currentState;\r\n    const newVal = transaction.update(currentState.val());\r\n    if (newVal === undefined) {\r\n        // Abort transaction.\r\n        transaction.unwatcher();\r\n        transaction.currentOutputSnapshotRaw = null;\r\n        transaction.currentOutputSnapshotResolved = null;\r\n        if (transaction.onComplete) {\r\n            transaction.onComplete(null, false, transaction.currentInputSnapshot);\r\n        }\r\n    }\r\n    else {\r\n        validateFirebaseData('transaction failed: Data returned ', newVal, transaction.path);\r\n        // Mark as run and add to our queue.\r\n        transaction.status = 0 /* RUN */;\r\n        const queueNode = treeSubTree(repo.transactionQueueTree_, path);\r\n        const nodeQueue = treeGetValue(queueNode) || [];\r\n        nodeQueue.push(transaction);\r\n        treeSetValue(queueNode, nodeQueue);\r\n        // Update visibleData and raise events\r\n        // Note: We intentionally raise events after updating all of our\r\n        // transaction state, since the user could start new transactions from the\r\n        // event callbacks.\r\n        let priorityForNode;\r\n        if (typeof newVal === 'object' &&\r\n            newVal !== null &&\r\n            contains(newVal, '.priority')) {\r\n            // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n            priorityForNode = safeGet(newVal, '.priority');\r\n            assert(isValidPriority(priorityForNode), 'Invalid priority returned by transaction. ' +\r\n                'Priority must be a valid string, finite number, server value, or null.');\r\n        }\r\n        else {\r\n            const currentNode = syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path) ||\r\n                ChildrenNode.EMPTY_NODE;\r\n            priorityForNode = currentNode.getPriority().val();\r\n        }\r\n        const serverValues = repoGenerateServerValues(repo);\r\n        const newNodeUnresolved = nodeFromJSON(newVal, priorityForNode);\r\n        const newNode = resolveDeferredValueSnapshot(newNodeUnresolved, currentState, serverValues);\r\n        transaction.currentOutputSnapshotRaw = newNodeUnresolved;\r\n        transaction.currentOutputSnapshotResolved = newNode;\r\n        transaction.currentWriteId = repoGetNextWriteId(repo);\r\n        const events = syncTreeApplyUserOverwrite(repo.serverSyncTree_, path, newNode, transaction.currentWriteId, transaction.applyLocally);\r\n        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);\r\n        repoSendReadyTransactions(repo, repo.transactionQueueTree_);\r\n    }\r\n}\r\n/**\r\n * @param excludeSets - A specific set to exclude\r\n */\r\nfunction repoGetLatestState(repo, path, excludeSets) {\r\n    return (syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path, excludeSets) ||\r\n        ChildrenNode.EMPTY_NODE);\r\n}\r\n/**\r\n * Sends any already-run transactions that aren't waiting for outstanding\r\n * transactions to complete.\r\n *\r\n * Externally it's called with no arguments, but it calls itself recursively\r\n * with a particular transactionQueueTree node to recurse through the tree.\r\n *\r\n * @param node - transactionQueueTree node to start at.\r\n */\r\nfunction repoSendReadyTransactions(repo, node = repo.transactionQueueTree_) {\r\n    // Before recursing, make sure any completed transactions are removed.\r\n    if (!node) {\r\n        repoPruneCompletedTransactionsBelowNode(repo, node);\r\n    }\r\n    if (treeGetValue(node)) {\r\n        const queue = repoBuildTransactionQueue(repo, node);\r\n        assert(queue.length > 0, 'Sending zero length transaction queue');\r\n        const allRun = queue.every((transaction) => transaction.status === 0 /* RUN */);\r\n        // If they're all run (and not sent), we can send them.  Else, we must wait.\r\n        if (allRun) {\r\n            repoSendTransactionQueue(repo, treeGetPath(node), queue);\r\n        }\r\n    }\r\n    else if (treeHasChildren(node)) {\r\n        treeForEachChild(node, childNode => {\r\n            repoSendReadyTransactions(repo, childNode);\r\n        });\r\n    }\r\n}\r\n/**\r\n * Given a list of run transactions, send them to the server and then handle\r\n * the result (success or failure).\r\n *\r\n * @param path - The location of the queue.\r\n * @param queue - Queue of transactions under the specified location.\r\n */\r\nfunction repoSendTransactionQueue(repo, path, queue) {\r\n    // Mark transactions as sent and increment retry count!\r\n    const setsToIgnore = queue.map(txn => {\r\n        return txn.currentWriteId;\r\n    });\r\n    const latestState = repoGetLatestState(repo, path, setsToIgnore);\r\n    let snapToSend = latestState;\r\n    const latestHash = latestState.hash();\r\n    for (let i = 0; i < queue.length; i++) {\r\n        const txn = queue[i];\r\n        assert(txn.status === 0 /* RUN */, 'tryToSendTransactionQueue_: items in queue should all be run.');\r\n        txn.status = 1 /* SENT */;\r\n        txn.retryCount++;\r\n        const relativePath = newRelativePath(path, txn.path);\r\n        // If we've gotten to this point, the output snapshot must be defined.\r\n        snapToSend = snapToSend.updateChild(relativePath /** @type {!Node} */, txn.currentOutputSnapshotRaw);\r\n    }\r\n    const dataToSend = snapToSend.val(true);\r\n    const pathToSend = path;\r\n    // Send the put.\r\n    repo.server_.put(pathToSend.toString(), dataToSend, (status) => {\r\n        repoLog(repo, 'transaction put response', {\r\n            path: pathToSend.toString(),\r\n            status\r\n        });\r\n        let events = [];\r\n        if (status === 'ok') {\r\n            // Queue up the callbacks and fire them after cleaning up all of our\r\n            // transaction state, since the callback could trigger more\r\n            // transactions or sets.\r\n            const callbacks = [];\r\n            for (let i = 0; i < queue.length; i++) {\r\n                queue[i].status = 2 /* COMPLETED */;\r\n                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, queue[i].currentWriteId));\r\n                if (queue[i].onComplete) {\r\n                    // We never unset the output snapshot, and given that this\r\n                    // transaction is complete, it should be set\r\n                    callbacks.push(() => queue[i].onComplete(null, true, queue[i].currentOutputSnapshotResolved));\r\n                }\r\n                queue[i].unwatcher();\r\n            }\r\n            // Now remove the completed transactions.\r\n            repoPruneCompletedTransactionsBelowNode(repo, treeSubTree(repo.transactionQueueTree_, path));\r\n            // There may be pending transactions that we can now send.\r\n            repoSendReadyTransactions(repo, repo.transactionQueueTree_);\r\n            eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);\r\n            // Finally, trigger onComplete callbacks.\r\n            for (let i = 0; i < callbacks.length; i++) {\r\n                exceptionGuard(callbacks[i]);\r\n            }\r\n        }\r\n        else {\r\n            // transactions are no longer sent.  Update their status appropriately.\r\n            if (status === 'datastale') {\r\n                for (let i = 0; i < queue.length; i++) {\r\n                    if (queue[i].status === 3 /* SENT_NEEDS_ABORT */) {\r\n                        queue[i].status = 4 /* NEEDS_ABORT */;\r\n                    }\r\n                    else {\r\n                        queue[i].status = 0 /* RUN */;\r\n                    }\r\n                }\r\n            }\r\n            else {\r\n                warn('transaction at ' + pathToSend.toString() + ' failed: ' + status);\r\n                for (let i = 0; i < queue.length; i++) {\r\n                    queue[i].status = 4 /* NEEDS_ABORT */;\r\n                    queue[i].abortReason = status;\r\n                }\r\n            }\r\n            repoRerunTransactions(repo, path);\r\n        }\r\n    }, latestHash);\r\n}\r\n/**\r\n * Finds all transactions dependent on the data at changedPath and reruns them.\r\n *\r\n * Should be called any time cached data changes.\r\n *\r\n * Return the highest path that was affected by rerunning transactions. This\r\n * is the path at which events need to be raised for.\r\n *\r\n * @param changedPath - The path in mergedData that changed.\r\n * @returns The rootmost path that was affected by rerunning transactions.\r\n */\r\nfunction repoRerunTransactions(repo, changedPath) {\r\n    const rootMostTransactionNode = repoGetAncestorTransactionNode(repo, changedPath);\r\n    const path = treeGetPath(rootMostTransactionNode);\r\n    const queue = repoBuildTransactionQueue(repo, rootMostTransactionNode);\r\n    repoRerunTransactionQueue(repo, queue, path);\r\n    return path;\r\n}\r\n/**\r\n * Does all the work of rerunning transactions (as well as cleans up aborted\r\n * transactions and whatnot).\r\n *\r\n * @param queue - The queue of transactions to run.\r\n * @param path - The path the queue is for.\r\n */\r\nfunction repoRerunTransactionQueue(repo, queue, path) {\r\n    if (queue.length === 0) {\r\n        return; // Nothing to do!\r\n    }\r\n    // Queue up the callbacks and fire them after cleaning up all of our\r\n    // transaction state, since the callback could trigger more transactions or\r\n    // sets.\r\n    const callbacks = [];\r\n    let events = [];\r\n    // Ignore all of the sets we're going to re-run.\r\n    const txnsToRerun = queue.filter(q => {\r\n        return q.status === 0 /* RUN */;\r\n    });\r\n    const setsToIgnore = txnsToRerun.map(q => {\r\n        return q.currentWriteId;\r\n    });\r\n    for (let i = 0; i < queue.length; i++) {\r\n        const transaction = queue[i];\r\n        const relativePath = newRelativePath(path, transaction.path);\r\n        let abortTransaction = false, abortReason;\r\n        assert(relativePath !== null, 'rerunTransactionsUnderNode_: relativePath should not be null.');\r\n        if (transaction.status === 4 /* NEEDS_ABORT */) {\r\n            abortTransaction = true;\r\n            abortReason = transaction.abortReason;\r\n            events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));\r\n        }\r\n        else if (transaction.status === 0 /* RUN */) {\r\n            if (transaction.retryCount >= MAX_TRANSACTION_RETRIES) {\r\n                abortTransaction = true;\r\n                abortReason = 'maxretry';\r\n                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));\r\n            }\r\n            else {\r\n                // This code reruns a transaction\r\n                const currentNode = repoGetLatestState(repo, transaction.path, setsToIgnore);\r\n                transaction.currentInputSnapshot = currentNode;\r\n                const newData = queue[i].update(currentNode.val());\r\n                if (newData !== undefined) {\r\n                    validateFirebaseData('transaction failed: Data returned ', newData, transaction.path);\r\n                    let newDataNode = nodeFromJSON(newData);\r\n                    const hasExplicitPriority = typeof newData === 'object' &&\r\n                        newData != null &&\r\n                        contains(newData, '.priority');\r\n                    if (!hasExplicitPriority) {\r\n                        // Keep the old priority if there wasn't a priority explicitly specified.\r\n                        newDataNode = newDataNode.updatePriority(currentNode.getPriority());\r\n                    }\r\n                    const oldWriteId = transaction.currentWriteId;\r\n                    const serverValues = repoGenerateServerValues(repo);\r\n                    const newNodeResolved = resolveDeferredValueSnapshot(newDataNode, currentNode, serverValues);\r\n                    transaction.currentOutputSnapshotRaw = newDataNode;\r\n                    transaction.currentOutputSnapshotResolved = newNodeResolved;\r\n                    transaction.currentWriteId = repoGetNextWriteId(repo);\r\n                    // Mutates setsToIgnore in place\r\n                    setsToIgnore.splice(setsToIgnore.indexOf(oldWriteId), 1);\r\n                    events = events.concat(syncTreeApplyUserOverwrite(repo.serverSyncTree_, transaction.path, newNodeResolved, transaction.currentWriteId, transaction.applyLocally));\r\n                    events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, oldWriteId, true));\r\n                }\r\n                else {\r\n                    abortTransaction = true;\r\n                    abortReason = 'nodata';\r\n                    events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));\r\n                }\r\n            }\r\n        }\r\n        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);\r\n        events = [];\r\n        if (abortTransaction) {\r\n            // Abort.\r\n            queue[i].status = 2 /* COMPLETED */;\r\n            // Removing a listener can trigger pruning which can muck with\r\n            // mergedData/visibleData (as it prunes data). So defer the unwatcher\r\n            // until we're done.\r\n            (function (unwatcher) {\r\n                setTimeout(unwatcher, Math.floor(0));\r\n            })(queue[i].unwatcher);\r\n            if (queue[i].onComplete) {\r\n                if (abortReason === 'nodata') {\r\n                    callbacks.push(() => queue[i].onComplete(null, false, queue[i].currentInputSnapshot));\r\n                }\r\n                else {\r\n                    callbacks.push(() => queue[i].onComplete(new Error(abortReason), false, null));\r\n                }\r\n            }\r\n        }\r\n    }\r\n    // Clean up completed transactions.\r\n    repoPruneCompletedTransactionsBelowNode(repo, repo.transactionQueueTree_);\r\n    // Now fire callbacks, now that we're in a good, known state.\r\n    for (let i = 0; i < callbacks.length; i++) {\r\n        exceptionGuard(callbacks[i]);\r\n    }\r\n    // Try to send the transaction result to the server.\r\n    repoSendReadyTransactions(repo, repo.transactionQueueTree_);\r\n}\r\n/**\r\n * Returns the rootmost ancestor node of the specified path that has a pending\r\n * transaction on it, or just returns the node for the given path if there are\r\n * no pending transactions on any ancestor.\r\n *\r\n * @param path - The location to start at.\r\n * @returns The rootmost node with a transaction.\r\n */\r\nfunction repoGetAncestorTransactionNode(repo, path) {\r\n    let front;\r\n    // Start at the root and walk deeper into the tree towards path until we\r\n    // find a node with pending transactions.\r\n    let transactionNode = repo.transactionQueueTree_;\r\n    front = pathGetFront(path);\r\n    while (front !== null && treeGetValue(transactionNode) === undefined) {\r\n        transactionNode = treeSubTree(transactionNode, front);\r\n        path = pathPopFront(path);\r\n        front = pathGetFront(path);\r\n    }\r\n    return transactionNode;\r\n}\r\n/**\r\n * Builds the queue of all transactions at or below the specified\r\n * transactionNode.\r\n *\r\n * @param transactionNode\r\n * @returns The generated queue.\r\n */\r\nfunction repoBuildTransactionQueue(repo, transactionNode) {\r\n    // Walk any child transaction queues and aggregate them into a single queue.\r\n    const transactionQueue = [];\r\n    repoAggregateTransactionQueuesForNode(repo, transactionNode, transactionQueue);\r\n    // Sort them by the order the transactions were created.\r\n    transactionQueue.sort((a, b) => a.order - b.order);\r\n    return transactionQueue;\r\n}\r\nfunction repoAggregateTransactionQueuesForNode(repo, node, queue) {\r\n    const nodeQueue = treeGetValue(node);\r\n    if (nodeQueue) {\r\n        for (let i = 0; i < nodeQueue.length; i++) {\r\n            queue.push(nodeQueue[i]);\r\n        }\r\n    }\r\n    treeForEachChild(node, child => {\r\n        repoAggregateTransactionQueuesForNode(repo, child, queue);\r\n    });\r\n}\r\n/**\r\n * Remove COMPLETED transactions at or below this node in the transactionQueueTree_.\r\n */\r\nfunction repoPruneCompletedTransactionsBelowNode(repo, node) {\r\n    const queue = treeGetValue(node);\r\n    if (queue) {\r\n        let to = 0;\r\n        for (let from = 0; from < queue.length; from++) {\r\n            if (queue[from].status !== 2 /* COMPLETED */) {\r\n                queue[to] = queue[from];\r\n                to++;\r\n            }\r\n        }\r\n        queue.length = to;\r\n        treeSetValue(node, queue.length > 0 ? queue : undefined);\r\n    }\r\n    treeForEachChild(node, childNode => {\r\n        repoPruneCompletedTransactionsBelowNode(repo, childNode);\r\n    });\r\n}\r\n/**\r\n * Aborts all transactions on ancestors or descendants of the specified path.\r\n * Called when doing a set() or update() since we consider them incompatible\r\n * with transactions.\r\n *\r\n * @param path - Path for which we want to abort related transactions.\r\n */\r\nfunction repoAbortTransactions(repo, path) {\r\n    const affectedPath = treeGetPath(repoGetAncestorTransactionNode(repo, path));\r\n    const transactionNode = treeSubTree(repo.transactionQueueTree_, path);\r\n    treeForEachAncestor(transactionNode, (node) => {\r\n        repoAbortTransactionsOnNode(repo, node);\r\n    });\r\n    repoAbortTransactionsOnNode(repo, transactionNode);\r\n    treeForEachDescendant(transactionNode, (node) => {\r\n        repoAbortTransactionsOnNode(repo, node);\r\n    });\r\n    return affectedPath;\r\n}\r\n/**\r\n * Abort transactions stored in this transaction queue node.\r\n *\r\n * @param node - Node to abort transactions for.\r\n */\r\nfunction repoAbortTransactionsOnNode(repo, node) {\r\n    const queue = treeGetValue(node);\r\n    if (queue) {\r\n        // Queue up the callbacks and fire them after cleaning up all of our\r\n        // transaction state, since the callback could trigger more transactions\r\n        // or sets.\r\n        const callbacks = [];\r\n        // Go through queue.  Any already-sent transactions must be marked for\r\n        // abort, while the unsent ones can be immediately aborted and removed.\r\n        let events = [];\r\n        let lastSent = -1;\r\n        for (let i = 0; i < queue.length; i++) {\r\n            if (queue[i].status === 3 /* SENT_NEEDS_ABORT */) ;\r\n            else if (queue[i].status === 1 /* SENT */) {\r\n                assert(lastSent === i - 1, 'All SENT items should be at beginning of queue.');\r\n                lastSent = i;\r\n                // Mark transaction for abort when it comes back.\r\n                queue[i].status = 3 /* SENT_NEEDS_ABORT */;\r\n                queue[i].abortReason = 'set';\r\n            }\r\n            else {\r\n                assert(queue[i].status === 0 /* RUN */, 'Unexpected transaction status in abort');\r\n                // We can abort it immediately.\r\n                queue[i].unwatcher();\r\n                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, queue[i].currentWriteId, true));\r\n                if (queue[i].onComplete) {\r\n                    callbacks.push(queue[i].onComplete.bind(null, new Error('set'), false, null));\r\n                }\r\n            }\r\n        }\r\n        if (lastSent === -1) {\r\n            // We're not waiting for any sent transactions.  We can clear the queue.\r\n            treeSetValue(node, undefined);\r\n        }\r\n        else {\r\n            // Remove the transactions we aborted.\r\n            queue.length = lastSent + 1;\r\n        }\r\n        // Now fire the callbacks.\r\n        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, treeGetPath(node), events);\r\n        for (let i = 0; i < callbacks.length; i++) {\r\n            exceptionGuard(callbacks[i]);\r\n        }\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction decodePath(pathString) {\r\n    let pathStringDecoded = '';\r\n    const pieces = pathString.split('/');\r\n    for (let i = 0; i < pieces.length; i++) {\r\n        if (pieces[i].length > 0) {\r\n            let piece = pieces[i];\r\n            try {\r\n                piece = decodeURIComponent(piece.replace(/\\+/g, ' '));\r\n            }\r\n            catch (e) { }\r\n            pathStringDecoded += '/' + piece;\r\n        }\r\n    }\r\n    return pathStringDecoded;\r\n}\r\n/**\r\n * @returns key value hash\r\n */\r\nfunction decodeQuery(queryString) {\r\n    const results = {};\r\n    if (queryString.charAt(0) === '?') {\r\n        queryString = queryString.substring(1);\r\n    }\r\n    for (const segment of queryString.split('&')) {\r\n        if (segment.length === 0) {\r\n            continue;\r\n        }\r\n        const kv = segment.split('=');\r\n        if (kv.length === 2) {\r\n            results[decodeURIComponent(kv[0])] = decodeURIComponent(kv[1]);\r\n        }\r\n        else {\r\n            warn(`Invalid query segment '${segment}' in query '${queryString}'`);\r\n        }\r\n    }\r\n    return results;\r\n}\r\nconst parseRepoInfo = function (dataURL, nodeAdmin) {\r\n    const parsedUrl = parseDatabaseURL(dataURL), namespace = parsedUrl.namespace;\r\n    if (parsedUrl.domain === 'firebase.com') {\r\n        fatal(parsedUrl.host +\r\n            ' is no longer supported. ' +\r\n            'Please use <YOUR FIREBASE>.firebaseio.com instead');\r\n    }\r\n    // Catch common error of uninitialized namespace value.\r\n    if ((!namespace || namespace === 'undefined') &&\r\n        parsedUrl.domain !== 'localhost') {\r\n        fatal('Cannot parse Firebase url. Please use https://<YOUR FIREBASE>.firebaseio.com');\r\n    }\r\n    if (!parsedUrl.secure) {\r\n        warnIfPageIsSecure();\r\n    }\r\n    const webSocketOnly = parsedUrl.scheme === 'ws' || parsedUrl.scheme === 'wss';\r\n    return {\r\n        repoInfo: new RepoInfo(parsedUrl.host, parsedUrl.secure, namespace, nodeAdmin, webSocketOnly, \r\n        /*persistenceKey=*/ '', \r\n        /*includeNamespaceInQueryParams=*/ namespace !== parsedUrl.subdomain),\r\n        path: new Path(parsedUrl.pathString)\r\n    };\r\n};\r\nconst parseDatabaseURL = function (dataURL) {\r\n    // Default to empty strings in the event of a malformed string.\r\n    let host = '', domain = '', subdomain = '', pathString = '', namespace = '';\r\n    // Always default to SSL, unless otherwise specified.\r\n    let secure = true, scheme = 'https', port = 443;\r\n    // Don't do any validation here. The caller is responsible for validating the result of parsing.\r\n    if (typeof dataURL === 'string') {\r\n        // Parse scheme.\r\n        let colonInd = dataURL.indexOf('//');\r\n        if (colonInd >= 0) {\r\n            scheme = dataURL.substring(0, colonInd - 1);\r\n            dataURL = dataURL.substring(colonInd + 2);\r\n        }\r\n        // Parse host, path, and query string.\r\n        let slashInd = dataURL.indexOf('/');\r\n        if (slashInd === -1) {\r\n            slashInd = dataURL.length;\r\n        }\r\n        let questionMarkInd = dataURL.indexOf('?');\r\n        if (questionMarkInd === -1) {\r\n            questionMarkInd = dataURL.length;\r\n        }\r\n        host = dataURL.substring(0, Math.min(slashInd, questionMarkInd));\r\n        if (slashInd < questionMarkInd) {\r\n            // For pathString, questionMarkInd will always come after slashInd\r\n            pathString = decodePath(dataURL.substring(slashInd, questionMarkInd));\r\n        }\r\n        const queryParams = decodeQuery(dataURL.substring(Math.min(dataURL.length, questionMarkInd)));\r\n        // If we have a port, use scheme for determining if it's secure.\r\n        colonInd = host.indexOf(':');\r\n        if (colonInd >= 0) {\r\n            secure = scheme === 'https' || scheme === 'wss';\r\n            port = parseInt(host.substring(colonInd + 1), 10);\r\n        }\r\n        else {\r\n            colonInd = host.length;\r\n        }\r\n        const hostWithoutPort = host.slice(0, colonInd);\r\n        if (hostWithoutPort.toLowerCase() === 'localhost') {\r\n            domain = 'localhost';\r\n        }\r\n        else if (hostWithoutPort.split('.').length <= 2) {\r\n            domain = hostWithoutPort;\r\n        }\r\n        else {\r\n            // Interpret the subdomain of a 3 or more component URL as the namespace name.\r\n            const dotInd = host.indexOf('.');\r\n            subdomain = host.substring(0, dotInd).toLowerCase();\r\n            domain = host.substring(dotInd + 1);\r\n            // Normalize namespaces to lowercase to share storage / connection.\r\n            namespace = subdomain;\r\n        }\r\n        // Always treat the value of the `ns` as the namespace name if it is present.\r\n        if ('ns' in queryParams) {\r\n            namespace = queryParams['ns'];\r\n        }\r\n    }\r\n    return {\r\n        host,\r\n        port,\r\n        domain,\r\n        subdomain,\r\n        secure,\r\n        scheme,\r\n        pathString,\r\n        namespace\r\n    };\r\n};\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * Encapsulates the data needed to raise an event\r\n */\r\nclass DataEvent {\r\n    /**\r\n     * @param eventType - One of: value, child_added, child_changed, child_moved, child_removed\r\n     * @param eventRegistration - The function to call to with the event data. User provided\r\n     * @param snapshot - The data backing the event\r\n     * @param prevName - Optional, the name of the previous child for child_* events.\r\n     */\r\n    constructor(eventType, eventRegistration, snapshot, prevName) {\r\n        this.eventType = eventType;\r\n        this.eventRegistration = eventRegistration;\r\n        this.snapshot = snapshot;\r\n        this.prevName = prevName;\r\n    }\r\n    getPath() {\r\n        const ref = this.snapshot.ref;\r\n        if (this.eventType === 'value') {\r\n            return ref._path;\r\n        }\r\n        else {\r\n            return ref.parent._path;\r\n        }\r\n    }\r\n    getEventType() {\r\n        return this.eventType;\r\n    }\r\n    getEventRunner() {\r\n        return this.eventRegistration.getEventRunner(this);\r\n    }\r\n    toString() {\r\n        return (this.getPath().toString() +\r\n            ':' +\r\n            this.eventType +\r\n            ':' +\r\n            stringify(this.snapshot.exportVal()));\r\n    }\r\n}\r\nclass CancelEvent {\r\n    constructor(eventRegistration, error, path) {\r\n        this.eventRegistration = eventRegistration;\r\n        this.error = error;\r\n        this.path = path;\r\n    }\r\n    getPath() {\r\n        return this.path;\r\n    }\r\n    getEventType() {\r\n        return 'cancel';\r\n    }\r\n    getEventRunner() {\r\n        return this.eventRegistration.getEventRunner(this);\r\n    }\r\n    toString() {\r\n        return this.path.toString() + ':cancel';\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A wrapper class that converts events from the database@exp SDK to the legacy\r\n * Database SDK. Events are not converted directly as event registration relies\r\n * on reference comparison of the original user callback (see `matches()`) and\r\n * relies on equality of the legacy SDK's `context` object.\r\n */\r\nclass CallbackContext {\r\n    constructor(snapshotCallback, cancelCallback) {\r\n        this.snapshotCallback = snapshotCallback;\r\n        this.cancelCallback = cancelCallback;\r\n    }\r\n    onValue(expDataSnapshot, previousChildName) {\r\n        this.snapshotCallback.call(null, expDataSnapshot, previousChildName);\r\n    }\r\n    onCancel(error) {\r\n        assert(this.hasCancelCallback, 'Raising a cancel event on a listener with no cancel callback');\r\n        return this.cancelCallback.call(null, error);\r\n    }\r\n    get hasCancelCallback() {\r\n        return !!this.cancelCallback;\r\n    }\r\n    matches(other) {\r\n        return (this.snapshotCallback === other.snapshotCallback ||\r\n            (this.snapshotCallback.userCallback !== undefined &&\r\n                this.snapshotCallback.userCallback ===\r\n                    other.snapshotCallback.userCallback &&\r\n                this.snapshotCallback.context === other.snapshotCallback.context));\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * The `onDisconnect` class allows you to write or clear data when your client\r\n * disconnects from the Database server. These updates occur whether your\r\n * client disconnects cleanly or not, so you can rely on them to clean up data\r\n * even if a connection is dropped or a client crashes.\r\n *\r\n * The `onDisconnect` class is most commonly used to manage presence in\r\n * applications where it is useful to detect how many clients are connected and\r\n * when other clients disconnect. See\r\n * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}\r\n * for more information.\r\n *\r\n * To avoid problems when a connection is dropped before the requests can be\r\n * transferred to the Database server, these functions should be called before\r\n * writing any data.\r\n *\r\n * Note that `onDisconnect` operations are only triggered once. If you want an\r\n * operation to occur each time a disconnect occurs, you'll need to re-establish\r\n * the `onDisconnect` operations each time you reconnect.\r\n */\r\nclass OnDisconnect {\r\n    /** @hideconstructor */\r\n    constructor(_repo, _path) {\r\n        this._repo = _repo;\r\n        this._path = _path;\r\n    }\r\n    /**\r\n     * Cancels all previously queued `onDisconnect()` set or update events for this\r\n     * location and all children.\r\n     *\r\n     * If a write has been queued for this location via a `set()` or `update()` at a\r\n     * parent location, the write at this location will be canceled, though writes\r\n     * to sibling locations will still occur.\r\n     *\r\n     * @returns Resolves when synchronization to the server is complete.\r\n     */\r\n    cancel() {\r\n        const deferred = new Deferred();\r\n        repoOnDisconnectCancel(this._repo, this._path, deferred.wrapCallback(() => { }));\r\n        return deferred.promise;\r\n    }\r\n    /**\r\n     * Ensures the data at this location is deleted when the client is disconnected\r\n     * (due to closing the browser, navigating to a new page, or network issues).\r\n     *\r\n     * @returns Resolves when synchronization to the server is complete.\r\n     */\r\n    remove() {\r\n        validateWritablePath('OnDisconnect.remove', this._path);\r\n        const deferred = new Deferred();\r\n        repoOnDisconnectSet(this._repo, this._path, null, deferred.wrapCallback(() => { }));\r\n        return deferred.promise;\r\n    }\r\n    /**\r\n     * Ensures the data at this location is set to the specified value when the\r\n     * client is disconnected (due to closing the browser, navigating to a new page,\r\n     * or network issues).\r\n     *\r\n     * `set()` is especially useful for implementing \"presence\" systems, where a\r\n     * value should be changed or cleared when a user disconnects so that they\r\n     * appear \"offline\" to other users. See\r\n     * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}\r\n     * for more information.\r\n     *\r\n     * Note that `onDisconnect` operations are only triggered once. If you want an\r\n     * operation to occur each time a disconnect occurs, you'll need to re-establish\r\n     * the `onDisconnect` operations each time.\r\n     *\r\n     * @param value - The value to be written to this location on disconnect (can\r\n     * be an object, array, string, number, boolean, or null).\r\n     * @returns Resolves when synchronization to the Database is complete.\r\n     */\r\n    set(value) {\r\n        validateWritablePath('OnDisconnect.set', this._path);\r\n        validateFirebaseDataArg('OnDisconnect.set', value, this._path, false);\r\n        const deferred = new Deferred();\r\n        repoOnDisconnectSet(this._repo, this._path, value, deferred.wrapCallback(() => { }));\r\n        return deferred.promise;\r\n    }\r\n    /**\r\n     * Ensures the data at this location is set to the specified value and priority\r\n     * when the client is disconnected (due to closing the browser, navigating to a\r\n     * new page, or network issues).\r\n     *\r\n     * @param value - The value to be written to this location on disconnect (can\r\n     * be an object, array, string, number, boolean, or null).\r\n     * @param priority - The priority to be written (string, number, or null).\r\n     * @returns Resolves when synchronization to the Database is complete.\r\n     */\r\n    setWithPriority(value, priority) {\r\n        validateWritablePath('OnDisconnect.setWithPriority', this._path);\r\n        validateFirebaseDataArg('OnDisconnect.setWithPriority', value, this._path, false);\r\n        validatePriority('OnDisconnect.setWithPriority', priority, false);\r\n        const deferred = new Deferred();\r\n        repoOnDisconnectSetWithPriority(this._repo, this._path, value, priority, deferred.wrapCallback(() => { }));\r\n        return deferred.promise;\r\n    }\r\n    /**\r\n     * Writes multiple values at this location when the client is disconnected (due\r\n     * to closing the browser, navigating to a new page, or network issues).\r\n     *\r\n     * The `values` argument contains multiple property-value pairs that will be\r\n     * written to the Database together. Each child property can either be a simple\r\n     * property (for example, \"name\") or a relative path (for example, \"name/first\")\r\n     * from the current location to the data to update.\r\n     *\r\n     * As opposed to the `set()` method, `update()` can be use to selectively update\r\n     * only the referenced properties at the current location (instead of replacing\r\n     * all the child properties at the current location).\r\n     *\r\n     * @param values - Object containing multiple values.\r\n     * @returns Resolves when synchronization to the Database is complete.\r\n     */\r\n    update(values) {\r\n        validateWritablePath('OnDisconnect.update', this._path);\r\n        validateFirebaseMergeDataArg('OnDisconnect.update', values, this._path, false);\r\n        const deferred = new Deferred();\r\n        repoOnDisconnectUpdate(this._repo, this._path, values, deferred.wrapCallback(() => { }));\r\n        return deferred.promise;\r\n    }\r\n}\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * @internal\r\n */\r\nclass QueryImpl {\r\n    /**\r\n     * @hideconstructor\r\n     */\r\n    constructor(_repo, _path, _queryParams, _orderByCalled) {\r\n        this._repo = _repo;\r\n        this._path = _path;\r\n        this._queryParams = _queryParams;\r\n        this._orderByCalled = _orderByCalled;\r\n    }\r\n    get key() {\r\n        if (pathIsEmpty(this._path)) {\r\n            return null;\r\n        }\r\n        else {\r\n            return pathGetBack(this._path);\r\n        }\r\n    }\r\n    get ref() {\r\n        return new ReferenceImpl(this._repo, this._path);\r\n    }\r\n    get _queryIdentifier() {\r\n        const obj = queryParamsGetQueryObject(this._queryParams);\r\n        const id = ObjectToUniqueKey(obj);\r\n        return id === '{}' ? 'default' : id;\r\n    }\r\n    /**\r\n     * An object representation of the query parameters used by this Query.\r\n     */\r\n    get _queryObject() {\r\n        return queryParamsGetQueryObject(this._queryParams);\r\n    }\r\n    isEqual(other) {\r\n        other = getModularInstance(other);\r\n        if (!(other instanceof QueryImpl)) {\r\n            return false;\r\n        }\r\n        const sameRepo = this._repo === other._repo;\r\n        const samePath = pathEquals(this._path, other._path);\r\n        const sameQueryIdentifier = this._queryIdentifier === other._queryIdentifier;\r\n        return sameRepo && samePath && sameQueryIdentifier;\r\n    }\r\n    toJSON() {\r\n        return this.toString();\r\n    }\r\n    toString() {\r\n        return this._repo.toString() + pathToUrlEncodedString(this._path);\r\n    }\r\n}\r\n/**\r\n * Validates that no other order by call has been made\r\n */\r\nfunction validateNoPreviousOrderByCall(query, fnName) {\r\n    if (query._orderByCalled === true) {\r\n        throw new Error(fnName + \": You can't combine multiple orderBy calls.\");\r\n    }\r\n}\r\n/**\r\n * Validates start/end values for queries.\r\n */\r\nfunction validateQueryEndpoints(params) {\r\n    let startNode = null;\r\n    let endNode = null;\r\n    if (params.hasStart()) {\r\n        startNode = params.getIndexStartValue();\r\n    }\r\n    if (params.hasEnd()) {\r\n        endNode = params.getIndexEndValue();\r\n    }\r\n    if (params.getIndex() === KEY_INDEX) {\r\n        const tooManyArgsError = 'Query: When ordering by key, you may only pass one argument to ' +\r\n            'startAt(), endAt(), or equalTo().';\r\n        const wrongArgTypeError = 'Query: When ordering by key, the argument passed to startAt(), startAfter(), ' +\r\n            'endAt(), endBefore(), or equalTo() must be a string.';\r\n        if (params.hasStart()) {\r\n            const startName = params.getIndexStartName();\r\n            if (startName !== MIN_NAME) {\r\n                throw new Error(tooManyArgsError);\r\n            }\r\n            else if (typeof startNode !== 'string') {\r\n                throw new Error(wrongArgTypeError);\r\n            }\r\n        }\r\n        if (params.hasEnd()) {\r\n            const endName = params.getIndexEndName();\r\n            if (endName !== MAX_NAME) {\r\n                throw new Error(tooManyArgsError);\r\n            }\r\n            else if (typeof endNode !== 'string') {\r\n                throw new Error(wrongArgTypeError);\r\n            }\r\n        }\r\n    }\r\n    else if (params.getIndex() === PRIORITY_INDEX) {\r\n        if ((startNode != null && !isValidPriority(startNode)) ||\r\n            (endNode != null && !isValidPriority(endNode))) {\r\n            throw new Error('Query: When ordering by priority, the first argument passed to startAt(), ' +\r\n                'startAfter() endAt(), endBefore(), or equalTo() must be a valid priority value ' +\r\n                '(null, a number, or a string).');\r\n        }\r\n    }\r\n    else {\r\n        assert(params.getIndex() instanceof PathIndex ||\r\n            params.getIndex() === VALUE_INDEX, 'unknown index type.');\r\n        if ((startNode != null && typeof startNode === 'object') ||\r\n            (endNode != null && typeof endNode === 'object')) {\r\n            throw new Error('Query: First argument passed to startAt(), startAfter(), endAt(), endBefore(), or ' +\r\n                'equalTo() cannot be an object.');\r\n        }\r\n    }\r\n}\r\n/**\r\n * Validates that limit* has been called with the correct combination of parameters\r\n */\r\nfunction validateLimit(params) {\r\n    if (params.hasStart() &&\r\n        params.hasEnd() &&\r\n        params.hasLimit() &&\r\n        !params.hasAnchoredLimit()) {\r\n        throw new Error(\"Query: Can't combine startAt(), startAfter(), endAt(), endBefore(), and limit(). Use \" +\r\n            'limitToFirst() or limitToLast() instead.');\r\n    }\r\n}\r\n/**\r\n * @internal\r\n */\r\nclass ReferenceImpl extends QueryImpl {\r\n    /** @hideconstructor */\r\n    constructor(repo, path) {\r\n        super(repo, path, new QueryParams(), false);\r\n    }\r\n    get parent() {\r\n        const parentPath = pathParent(this._path);\r\n        return parentPath === null\r\n            ? null\r\n            : new ReferenceImpl(this._repo, parentPath);\r\n    }\r\n    get root() {\r\n        let ref = this;\r\n        while (ref.parent !== null) {\r\n            ref = ref.parent;\r\n        }\r\n        return ref;\r\n    }\r\n}\r\n/**\r\n * A `DataSnapshot` contains data from a Database location.\r\n *\r\n * Any time you read data from the Database, you receive the data as a\r\n * `DataSnapshot`. A `DataSnapshot` is passed to the event callbacks you attach\r\n * with `on()` or `once()`. You can extract the contents of the snapshot as a\r\n * JavaScript object by calling the `val()` method. Alternatively, you can\r\n * traverse into the snapshot by calling `child()` to return child snapshots\r\n * (which you could then call `val()` on).\r\n *\r\n * A `DataSnapshot` is an efficiently generated, immutable copy of the data at\r\n * a Database location. It cannot be modified and will never change (to modify\r\n * data, you always call the `set()` method on a `Reference` directly).\r\n */\r\nclass DataSnapshot {\r\n    /**\r\n     * @param _node - A SnapshotNode to wrap.\r\n     * @param ref - The location this snapshot came from.\r\n     * @param _index - The iteration order for this snapshot\r\n     * @hideconstructor\r\n     */\r\n    constructor(_node, \r\n    /**\r\n     * The location of this DataSnapshot.\r\n     */\r\n    ref, _index) {\r\n        this._node = _node;\r\n        this.ref = ref;\r\n        this._index = _index;\r\n    }\r\n    /**\r\n     * Gets the priority value of the data in this `DataSnapshot`.\r\n     *\r\n     * Applications need not use priority but can order collections by\r\n     * ordinary properties (see\r\n     * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data |Sorting and filtering data}\r\n     * ).\r\n     */\r\n    get priority() {\r\n        // typecast here because we never return deferred values or internal priorities (MAX_PRIORITY)\r\n        return this._node.getPriority().val();\r\n    }\r\n    /**\r\n     * The key (last part of the path) of the location of this `DataSnapshot`.\r\n     *\r\n     * The last token in a Database location is considered its key. For example,\r\n     * \"ada\" is the key for the /users/ada/ node. Accessing the key on any\r\n     * `DataSnapshot` will return the key for the location that generated it.\r\n     * However, accessing the key on the root URL of a Database will return\r\n     * `null`.\r\n     */\r\n    get key() {\r\n        return this.ref.key;\r\n    }\r\n    /** Returns the number of child properties of this `DataSnapshot`. */\r\n    get size() {\r\n        return this._node.numChildren();\r\n    }\r\n    /**\r\n     * Gets another `DataSnapshot` for the location at the specified relative path.\r\n     *\r\n     * Passing a relative path to the `child()` method of a DataSnapshot returns\r\n     * another `DataSnapshot` for the location at the specified relative path. The\r\n     * relative path can either be a simple child name (for example, \"ada\") or a\r\n     * deeper, slash-separated path (for example, \"ada/name/first\"). If the child\r\n     * location has no data, an empty `DataSnapshot` (that is, a `DataSnapshot`\r\n     * whose value is `null`) is returned.\r\n     *\r\n     * @param path - A relative path to the location of child data.\r\n     */\r\n    child(path) {\r\n        const childPath = new Path(path);\r\n        const childRef = child(this.ref, path);\r\n        return new DataSnapshot(this._node.getChild(childPath), childRef, PRIORITY_INDEX);\r\n    }\r\n    /**\r\n     * Returns true if this `DataSnapshot` contains any data. It is slightly more\r\n     * efficient than using `snapshot.val() !== null`.\r\n     */\r\n    exists() {\r\n        return !this._node.isEmpty();\r\n    }\r\n    /**\r\n     * Exports the entire contents of the DataSnapshot as a JavaScript object.\r\n     *\r\n     * The `exportVal()` method is similar to `val()`, except priority information\r\n     * is included (if available), making it suitable for backing up your data.\r\n     *\r\n     * @returns The DataSnapshot's contents as a JavaScript value (Object,\r\n     *   Array, string, number, boolean, or `null`).\r\n     */\r\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n    exportVal() {\r\n        return this._node.val(true);\r\n    }\r\n    /**\r\n     * Enumerates the top-level children in the `DataSnapshot`.\r\n     *\r\n     * Because of the way JavaScript objects work, the ordering of data in the\r\n     * JavaScript object returned by `val()` is not guaranteed to match the\r\n     * ordering on the server nor the ordering of `onChildAdded()` events. That is\r\n     * where `forEach()` comes in handy. It guarantees the children of a\r\n     * `DataSnapshot` will be iterated in their query order.\r\n     *\r\n     * If no explicit `orderBy*()` method is used, results are returned\r\n     * ordered by key (unless priorities are used, in which case, results are\r\n     * returned by priority).\r\n     *\r\n     * @param action - A function that will be called for each child DataSnapshot.\r\n     * The callback can return true to cancel further enumeration.\r\n     * @returns true if enumeration was canceled due to your callback returning\r\n     * true.\r\n     */\r\n    forEach(action) {\r\n        if (this._node.isLeafNode()) {\r\n            return false;\r\n        }\r\n        const childrenNode = this._node;\r\n        // Sanitize the return value to a boolean. ChildrenNode.forEachChild has a weird return type...\r\n        return !!childrenNode.forEachChild(this._index, (key, node) => {\r\n            return action(new DataSnapshot(node, child(this.ref, key), PRIORITY_INDEX));\r\n        });\r\n    }\r\n    /**\r\n     * Returns true if the specified child path has (non-null) data.\r\n     *\r\n     * @param path - A relative path to the location of a potential child.\r\n     * @returns `true` if data exists at the specified child path; else\r\n     *  `false`.\r\n     */\r\n    hasChild(path) {\r\n        const childPath = new Path(path);\r\n        return !this._node.getChild(childPath).isEmpty();\r\n    }\r\n    /**\r\n     * Returns whether or not the `DataSnapshot` has any non-`null` child\r\n     * properties.\r\n     *\r\n     * You can use `hasChildren()` to determine if a `DataSnapshot` has any\r\n     * children. If it does, you can enumerate them using `forEach()`. If it\r\n     * doesn't, then either this snapshot contains a primitive value (which can be\r\n     * retrieved with `val()`) or it is empty (in which case, `val()` will return\r\n     * `null`).\r\n     *\r\n     * @returns true if this snapshot has any children; else false.\r\n     */\r\n    hasChildren() {\r\n        if (this._node.isLeafNode()) {\r\n            return false;\r\n        }\r\n        else {\r\n            return !this._node.isEmpty();\r\n        }\r\n    }\r\n    /**\r\n     * Returns a JSON-serializable representation of this object.\r\n     */\r\n    toJSON() {\r\n        return this.exportVal();\r\n    }\r\n    /**\r\n     * Extracts a JavaScript value from a `DataSnapshot`.\r\n     *\r\n     * Depending on the data in a `DataSnapshot`, the `val()` method may return a\r\n     * scalar type (string, number, or boolean), an array, or an object. It may\r\n     * also return null, indicating that the `DataSnapshot` is empty (contains no\r\n     * data).\r\n     *\r\n     * @returns The DataSnapshot's contents as a JavaScript value (Object,\r\n     *   Array, string, number, boolean, or `null`).\r\n     */\r\n    // eslint-disable-next-line @typescript-eslint/no-explicit-any\r\n    val() {\r\n        return this._node.val();\r\n    }\r\n}\r\n/**\r\n *\r\n * Returns a `Reference` representing the location in the Database\r\n * corresponding to the provided path. If no path is provided, the `Reference`\r\n * will point to the root of the Database.\r\n *\r\n * @param db - The database instance to obtain a reference for.\r\n * @param path - Optional path representing the location the returned\r\n *   `Reference` will point. If not provided, the returned `Reference` will\r\n *   point to the root of the Database.\r\n * @returns If a path is provided, a `Reference`\r\n *   pointing to the provided path. Otherwise, a `Reference` pointing to the\r\n *   root of the Database.\r\n */\r\nfunction ref(db, path) {\r\n    db = getModularInstance(db);\r\n    db._checkNotDeleted('ref');\r\n    return path !== undefined ? child(db._root, path) : db._root;\r\n}\r\n/**\r\n * Returns a `Reference` representing the location in the Database\r\n * corresponding to the provided Firebase URL.\r\n *\r\n * An exception is thrown if the URL is not a valid Firebase Database URL or it\r\n * has a different domain than the current `Database` instance.\r\n *\r\n * Note that all query parameters (`orderBy`, `limitToLast`, etc.) are ignored\r\n * and are not applied to the returned `Reference`.\r\n *\r\n * @param db - The database instance to obtain a reference for.\r\n * @param url - The Firebase URL at which the returned `Reference` will\r\n *   point.\r\n * @returns A `Reference` pointing to the provided\r\n *   Firebase URL.\r\n */\r\nfunction refFromURL(db, url) {\r\n    db = getModularInstance(db);\r\n    db._checkNotDeleted('refFromURL');\r\n    const parsedURL = parseRepoInfo(url, db._repo.repoInfo_.nodeAdmin);\r\n    validateUrl('refFromURL', parsedURL);\r\n    const repoInfo = parsedURL.repoInfo;\r\n    if (!db._repo.repoInfo_.isCustomHost() &&\r\n        repoInfo.host !== db._repo.repoInfo_.host) {\r\n        fatal('refFromURL' +\r\n            ': Host name does not match the current database: ' +\r\n            '(found ' +\r\n            repoInfo.host +\r\n            ' but expected ' +\r\n            db._repo.repoInfo_.host +\r\n            ')');\r\n    }\r\n    return ref(db, parsedURL.path.toString());\r\n}\r\n/**\r\n * Gets a `Reference` for the location at the specified relative path.\r\n *\r\n * The relative path can either be a simple child name (for example, \"ada\") or\r\n * a deeper slash-separated path (for example, \"ada/name/first\").\r\n *\r\n * @param parent - The parent location.\r\n * @param path - A relative path from this location to the desired child\r\n *   location.\r\n * @returns The specified child location.\r\n */\r\nfunction child(parent, path) {\r\n    parent = getModularInstance(parent);\r\n    if (pathGetFront(parent._path) === null) {\r\n        validateRootPathString('child', 'path', path, false);\r\n    }\r\n    else {\r\n        validatePathString('child', 'path', path, false);\r\n    }\r\n    return new ReferenceImpl(parent._repo, pathChild(parent._path, path));\r\n}\r\n/**\r\n * Returns an `OnDisconnect` object - see\r\n * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}\r\n * for more information on how to use it.\r\n *\r\n * @param ref - The reference to add OnDisconnect triggers for.\r\n */\r\nfunction onDisconnect(ref) {\r\n    ref = getModularInstance(ref);\r\n    return new OnDisconnect(ref._repo, ref._path);\r\n}\r\n/**\r\n * Generates a new child location using a unique key and returns its\r\n * `Reference`.\r\n *\r\n * This is the most common pattern for adding data to a collection of items.\r\n *\r\n * If you provide a value to `push()`, the value is written to the\r\n * generated location. If you don't pass a value, nothing is written to the\r\n * database and the child remains empty (but you can use the `Reference`\r\n * elsewhere).\r\n *\r\n * The unique keys generated by `push()` are ordered by the current time, so the\r\n * resulting list of items is chronologically sorted. The keys are also\r\n * designed to be unguessable (they contain 72 random bits of entropy).\r\n *\r\n * See {@link https://firebase.google.com/docs/database/web/lists-of-data#append_to_a_list_of_data | Append to a list of data}\r\n * </br>See {@link ttps://firebase.googleblog.com/2015/02/the-2120-ways-to-ensure-unique_68.html | The 2^120 Ways to Ensure Unique Identifiers}\r\n *\r\n * @param parent - The parent location.\r\n * @param value - Optional value to be written at the generated location.\r\n * @returns Combined `Promise` and `Reference`; resolves when write is complete,\r\n * but can be used immediately as the `Reference` to the child location.\r\n */\r\nfunction push(parent, value) {\r\n    parent = getModularInstance(parent);\r\n    validateWritablePath('push', parent._path);\r\n    validateFirebaseDataArg('push', value, parent._path, true);\r\n    const now = repoServerTime(parent._repo);\r\n    const name = nextPushId(now);\r\n    // push() returns a ThennableReference whose promise is fulfilled with a\r\n    // regular Reference. We use child() to create handles to two different\r\n    // references. The first is turned into a ThennableReference below by adding\r\n    // then() and catch() methods and is used as the return value of push(). The\r\n    // second remains a regular Reference and is used as the fulfilled value of\r\n    // the first ThennableReference.\r\n    const thennablePushRef = child(parent, name);\r\n    const pushRef = child(parent, name);\r\n    let promise;\r\n    if (value != null) {\r\n        promise = set(pushRef, value).then(() => pushRef);\r\n    }\r\n    else {\r\n        promise = Promise.resolve(pushRef);\r\n    }\r\n    thennablePushRef.then = promise.then.bind(promise);\r\n    thennablePushRef.catch = promise.then.bind(promise, undefined);\r\n    return thennablePushRef;\r\n}\r\n/**\r\n * Removes the data at this Database location.\r\n *\r\n * Any data at child locations will also be deleted.\r\n *\r\n * The effect of the remove will be visible immediately and the corresponding\r\n * event 'value' will be triggered. Synchronization of the remove to the\r\n * Firebase servers will also be started, and the returned Promise will resolve\r\n * when complete. If provided, the onComplete callback will be called\r\n * asynchronously after synchronization has finished.\r\n *\r\n * @param ref - The location to remove.\r\n * @returns Resolves when remove on server is complete.\r\n */\r\nfunction remove(ref) {\r\n    validateWritablePath('remove', ref._path);\r\n    return set(ref, null);\r\n}\r\n/**\r\n * Writes data to this Database location.\r\n *\r\n * This will overwrite any data at this location and all child locations.\r\n *\r\n * The effect of the write will be visible immediately, and the corresponding\r\n * events (\"value\", \"child_added\", etc.) will be triggered. Synchronization of\r\n * the data to the Firebase servers will also be started, and the returned\r\n * Promise will resolve when complete. If provided, the `onComplete` callback\r\n * will be called asynchronously after synchronization has finished.\r\n *\r\n * Passing `null` for the new value is equivalent to calling `remove()`; namely,\r\n * all data at this location and all child locations will be deleted.\r\n *\r\n * `set()` will remove any priority stored at this location, so if priority is\r\n * meant to be preserved, you need to use `setWithPriority()` instead.\r\n *\r\n * Note that modifying data with `set()` will cancel any pending transactions\r\n * at that location, so extreme care should be taken if mixing `set()` and\r\n * `transaction()` to modify the same data.\r\n *\r\n * A single `set()` will generate a single \"value\" event at the location where\r\n * the `set()` was performed.\r\n *\r\n * @param ref - The location to write to.\r\n * @param value - The value to be written (string, number, boolean, object,\r\n *   array, or null).\r\n * @returns Resolves when write to server is complete.\r\n */\r\nfunction set(ref, value) {\r\n    ref = getModularInstance(ref);\r\n    validateWritablePath('set', ref._path);\r\n    validateFirebaseDataArg('set', value, ref._path, false);\r\n    const deferred = new Deferred();\r\n    repoSetWithPriority(ref._repo, ref._path, value, \r\n    /*priority=*/ null, deferred.wrapCallback(() => { }));\r\n    return deferred.promise;\r\n}\r\n/**\r\n * Sets a priority for the data at this Database location.\r\n *\r\n * Applications need not use priority but can order collections by\r\n * ordinary properties (see\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}\r\n * ).\r\n *\r\n * @param ref - The location to write to.\r\n * @param priority - The priority to be written (string, number, or null).\r\n * @returns Resolves when write to server is complete.\r\n */\r\nfunction setPriority(ref, priority) {\r\n    ref = getModularInstance(ref);\r\n    validateWritablePath('setPriority', ref._path);\r\n    validatePriority('setPriority', priority, false);\r\n    const deferred = new Deferred();\r\n    repoSetWithPriority(ref._repo, pathChild(ref._path, '.priority'), priority, null, deferred.wrapCallback(() => { }));\r\n    return deferred.promise;\r\n}\r\n/**\r\n * Writes data the Database location. Like `set()` but also specifies the\r\n * priority for that data.\r\n *\r\n * Applications need not use priority but can order collections by\r\n * ordinary properties (see\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}\r\n * ).\r\n *\r\n * @param ref - The location to write to.\r\n * @param value - The value to be written (string, number, boolean, object,\r\n *   array, or null).\r\n * @param priority - The priority to be written (string, number, or null).\r\n * @returns Resolves when write to server is complete.\r\n */\r\nfunction setWithPriority(ref, value, priority) {\r\n    validateWritablePath('setWithPriority', ref._path);\r\n    validateFirebaseDataArg('setWithPriority', value, ref._path, false);\r\n    validatePriority('setWithPriority', priority, false);\r\n    if (ref.key === '.length' || ref.key === '.keys') {\r\n        throw 'setWithPriority failed: ' + ref.key + ' is a read-only object.';\r\n    }\r\n    const deferred = new Deferred();\r\n    repoSetWithPriority(ref._repo, ref._path, value, priority, deferred.wrapCallback(() => { }));\r\n    return deferred.promise;\r\n}\r\n/**\r\n * Writes multiple values to the Database at once.\r\n *\r\n * The `values` argument contains multiple property-value pairs that will be\r\n * written to the Database together. Each child property can either be a simple\r\n * property (for example, \"name\") or a relative path (for example,\r\n * \"name/first\") from the current location to the data to update.\r\n *\r\n * As opposed to the `set()` method, `update()` can be use to selectively update\r\n * only the referenced properties at the current location (instead of replacing\r\n * all the child properties at the current location).\r\n *\r\n * The effect of the write will be visible immediately, and the corresponding\r\n * events ('value', 'child_added', etc.) will be triggered. Synchronization of\r\n * the data to the Firebase servers will also be started, and the returned\r\n * Promise will resolve when complete. If provided, the `onComplete` callback\r\n * will be called asynchronously after synchronization has finished.\r\n *\r\n * A single `update()` will generate a single \"value\" event at the location\r\n * where the `update()` was performed, regardless of how many children were\r\n * modified.\r\n *\r\n * Note that modifying data with `update()` will cancel any pending\r\n * transactions at that location, so extreme care should be taken if mixing\r\n * `update()` and `transaction()` to modify the same data.\r\n *\r\n * Passing `null` to `update()` will remove the data at this location.\r\n *\r\n * See\r\n * {@link https://firebase.googleblog.com/2015/09/introducing-multi-location-updates-and_86.html | Introducing multi-location updates and more}.\r\n *\r\n * @param ref - The location to write to.\r\n * @param values - Object containing multiple values.\r\n * @returns Resolves when update on server is complete.\r\n */\r\nfunction update(ref, values) {\r\n    validateFirebaseMergeDataArg('update', values, ref._path, false);\r\n    const deferred = new Deferred();\r\n    repoUpdate(ref._repo, ref._path, values, deferred.wrapCallback(() => { }));\r\n    return deferred.promise;\r\n}\r\n/**\r\n * Gets the most up-to-date result for this query.\r\n *\r\n * @param query - The query to run.\r\n * @returns A `Promise` which resolves to the resulting DataSnapshot if a value is\r\n * available, or rejects if the client is unable to return a value (e.g., if the\r\n * server is unreachable and there is nothing cached).\r\n */\r\nfunction get(query) {\r\n    query = getModularInstance(query);\r\n    return repoGetValue(query._repo, query).then(node => {\r\n        return new DataSnapshot(node, new ReferenceImpl(query._repo, query._path), query._queryParams.getIndex());\r\n    });\r\n}\r\n/**\r\n * Represents registration for 'value' events.\r\n */\r\nclass ValueEventRegistration {\r\n    constructor(callbackContext) {\r\n        this.callbackContext = callbackContext;\r\n    }\r\n    respondsTo(eventType) {\r\n        return eventType === 'value';\r\n    }\r\n    createEvent(change, query) {\r\n        const index = query._queryParams.getIndex();\r\n        return new DataEvent('value', this, new DataSnapshot(change.snapshotNode, new ReferenceImpl(query._repo, query._path), index));\r\n    }\r\n    getEventRunner(eventData) {\r\n        if (eventData.getEventType() === 'cancel') {\r\n            return () => this.callbackContext.onCancel(eventData.error);\r\n        }\r\n        else {\r\n            return () => this.callbackContext.onValue(eventData.snapshot, null);\r\n        }\r\n    }\r\n    createCancelEvent(error, path) {\r\n        if (this.callbackContext.hasCancelCallback) {\r\n            return new CancelEvent(this, error, path);\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n    matches(other) {\r\n        if (!(other instanceof ValueEventRegistration)) {\r\n            return false;\r\n        }\r\n        else if (!other.callbackContext || !this.callbackContext) {\r\n            // If no callback specified, we consider it to match any callback.\r\n            return true;\r\n        }\r\n        else {\r\n            return other.callbackContext.matches(this.callbackContext);\r\n        }\r\n    }\r\n    hasAnyCallback() {\r\n        return this.callbackContext !== null;\r\n    }\r\n}\r\n/**\r\n * Represents the registration of a child_x event.\r\n */\r\nclass ChildEventRegistration {\r\n    constructor(eventType, callbackContext) {\r\n        this.eventType = eventType;\r\n        this.callbackContext = callbackContext;\r\n    }\r\n    respondsTo(eventType) {\r\n        let eventToCheck = eventType === 'children_added' ? 'child_added' : eventType;\r\n        eventToCheck =\r\n            eventToCheck === 'children_removed' ? 'child_removed' : eventToCheck;\r\n        return this.eventType === eventToCheck;\r\n    }\r\n    createCancelEvent(error, path) {\r\n        if (this.callbackContext.hasCancelCallback) {\r\n            return new CancelEvent(this, error, path);\r\n        }\r\n        else {\r\n            return null;\r\n        }\r\n    }\r\n    createEvent(change, query) {\r\n        assert(change.childName != null, 'Child events should have a childName.');\r\n        const childRef = child(new ReferenceImpl(query._repo, query._path), change.childName);\r\n        const index = query._queryParams.getIndex();\r\n        return new DataEvent(change.type, this, new DataSnapshot(change.snapshotNode, childRef, index), change.prevName);\r\n    }\r\n    getEventRunner(eventData) {\r\n        if (eventData.getEventType() === 'cancel') {\r\n            return () => this.callbackContext.onCancel(eventData.error);\r\n        }\r\n        else {\r\n            return () => this.callbackContext.onValue(eventData.snapshot, eventData.prevName);\r\n        }\r\n    }\r\n    matches(other) {\r\n        if (other instanceof ChildEventRegistration) {\r\n            return (this.eventType === other.eventType &&\r\n                (!this.callbackContext ||\r\n                    !other.callbackContext ||\r\n                    this.callbackContext.matches(other.callbackContext)));\r\n        }\r\n        return false;\r\n    }\r\n    hasAnyCallback() {\r\n        return !!this.callbackContext;\r\n    }\r\n}\r\nfunction addEventListener(query, eventType, callback, cancelCallbackOrListenOptions, options) {\r\n    let cancelCallback;\r\n    if (typeof cancelCallbackOrListenOptions === 'object') {\r\n        cancelCallback = undefined;\r\n        options = cancelCallbackOrListenOptions;\r\n    }\r\n    if (typeof cancelCallbackOrListenOptions === 'function') {\r\n        cancelCallback = cancelCallbackOrListenOptions;\r\n    }\r\n    if (options && options.onlyOnce) {\r\n        const userCallback = callback;\r\n        const onceCallback = (dataSnapshot, previousChildName) => {\r\n            repoRemoveEventCallbackForQuery(query._repo, query, container);\r\n            userCallback(dataSnapshot, previousChildName);\r\n        };\r\n        onceCallback.userCallback = callback.userCallback;\r\n        onceCallback.context = callback.context;\r\n        callback = onceCallback;\r\n    }\r\n    const callbackContext = new CallbackContext(callback, cancelCallback || undefined);\r\n    const container = eventType === 'value'\r\n        ? new ValueEventRegistration(callbackContext)\r\n        : new ChildEventRegistration(eventType, callbackContext);\r\n    repoAddEventCallbackForQuery(query._repo, query, container);\r\n    return () => repoRemoveEventCallbackForQuery(query._repo, query, container);\r\n}\r\nfunction onValue(query, callback, cancelCallbackOrListenOptions, options) {\r\n    return addEventListener(query, 'value', callback, cancelCallbackOrListenOptions, options);\r\n}\r\nfunction onChildAdded(query, callback, cancelCallbackOrListenOptions, options) {\r\n    return addEventListener(query, 'child_added', callback, cancelCallbackOrListenOptions, options);\r\n}\r\nfunction onChildChanged(query, callback, cancelCallbackOrListenOptions, options) {\r\n    return addEventListener(query, 'child_changed', callback, cancelCallbackOrListenOptions, options);\r\n}\r\nfunction onChildMoved(query, callback, cancelCallbackOrListenOptions, options) {\r\n    return addEventListener(query, 'child_moved', callback, cancelCallbackOrListenOptions, options);\r\n}\r\nfunction onChildRemoved(query, callback, cancelCallbackOrListenOptions, options) {\r\n    return addEventListener(query, 'child_removed', callback, cancelCallbackOrListenOptions, options);\r\n}\r\n/**\r\n * Detaches a callback previously attached with `on()`.\r\n *\r\n * Detach a callback previously attached with `on()`. Note that if `on()` was\r\n * called multiple times with the same eventType and callback, the callback\r\n * will be called multiple times for each event, and `off()` must be called\r\n * multiple times to remove the callback. Calling `off()` on a parent listener\r\n * will not automatically remove listeners registered on child nodes, `off()`\r\n * must also be called on any child listeners to remove the callback.\r\n *\r\n * If a callback is not specified, all callbacks for the specified eventType\r\n * will be removed. Similarly, if no eventType is specified, all callbacks\r\n * for the `Reference` will be removed.\r\n *\r\n * Individual listeners can also be removed by invoking their unsubscribe\r\n * callbacks.\r\n *\r\n * @param query - The query that the listener was registered with.\r\n * @param eventType - One of the following strings: \"value\", \"child_added\",\r\n * \"child_changed\", \"child_removed\", or \"child_moved.\" If omitted, all callbacks\r\n * for the `Reference` will be removed.\r\n * @param callback - The callback function that was passed to `on()` or\r\n * `undefined` to remove all callbacks.\r\n */\r\nfunction off(query, eventType, callback) {\r\n    let container = null;\r\n    const expCallback = callback ? new CallbackContext(callback) : null;\r\n    if (eventType === 'value') {\r\n        container = new ValueEventRegistration(expCallback);\r\n    }\r\n    else if (eventType) {\r\n        container = new ChildEventRegistration(eventType, expCallback);\r\n    }\r\n    repoRemoveEventCallbackForQuery(query._repo, query, container);\r\n}\r\n/**\r\n * A `QueryConstraint` is used to narrow the set of documents returned by a\r\n * Database query. `QueryConstraint`s are created by invoking {@link endAt},\r\n * {@link endBefore}, {@link startAt}, {@link startAfter}, {@link\r\n * limitToFirst}, {@link limitToLast}, {@link orderByChild},\r\n * {@link orderByChild}, {@link orderByKey} , {@link orderByPriority} ,\r\n * {@link orderByValue}  or {@link equalTo} and\r\n * can then be passed to {@link query} to create a new query instance that\r\n * also contains this `QueryConstraint`.\r\n */\r\nclass QueryConstraint {\r\n}\r\nclass QueryEndAtConstraint extends QueryConstraint {\r\n    constructor(_value, _key) {\r\n        super();\r\n        this._value = _value;\r\n        this._key = _key;\r\n    }\r\n    _apply(query) {\r\n        validateFirebaseDataArg('endAt', this._value, query._path, true);\r\n        const newParams = queryParamsEndAt(query._queryParams, this._value, this._key);\r\n        validateLimit(newParams);\r\n        validateQueryEndpoints(newParams);\r\n        if (query._queryParams.hasEnd()) {\r\n            throw new Error('endAt: Starting point was already set (by another call to endAt, ' +\r\n                'endBefore or equalTo).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a `QueryConstraint` with the specified ending point.\r\n *\r\n * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`\r\n * allows you to choose arbitrary starting and ending points for your queries.\r\n *\r\n * The ending point is inclusive, so children with exactly the specified value\r\n * will be included in the query. The optional key argument can be used to\r\n * further limit the range of the query. If it is specified, then children that\r\n * have exactly the specified value must also have a key name less than or equal\r\n * to the specified key.\r\n *\r\n * You can read more about `endAt()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.\r\n *\r\n * @param value - The value to end at. The argument type depends on which\r\n * `orderBy*()` function was used in this query. Specify a value that matches\r\n * the `orderBy*()` type. When used in combination with `orderByKey()`, the\r\n * value must be a string.\r\n * @param key - The child key to end at, among the children with the previously\r\n * specified priority. This argument is only allowed if ordering by child,\r\n * value, or priority.\r\n */\r\nfunction endAt(value, key) {\r\n    validateKey('endAt', 'key', key, true);\r\n    return new QueryEndAtConstraint(value, key);\r\n}\r\nclass QueryEndBeforeConstraint extends QueryConstraint {\r\n    constructor(_value, _key) {\r\n        super();\r\n        this._value = _value;\r\n        this._key = _key;\r\n    }\r\n    _apply(query) {\r\n        validateFirebaseDataArg('endBefore', this._value, query._path, false);\r\n        const newParams = queryParamsEndBefore(query._queryParams, this._value, this._key);\r\n        validateLimit(newParams);\r\n        validateQueryEndpoints(newParams);\r\n        if (query._queryParams.hasEnd()) {\r\n            throw new Error('endBefore: Starting point was already set (by another call to endAt, ' +\r\n                'endBefore or equalTo).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a `QueryConstraint` with the specified ending point (exclusive).\r\n *\r\n * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`\r\n * allows you to choose arbitrary starting and ending points for your queries.\r\n *\r\n * The ending point is exclusive. If only a value is provided, children\r\n * with a value less than the specified value will be included in the query.\r\n * If a key is specified, then children must have a value lesss than or equal\r\n * to the specified value and a a key name less than the specified key.\r\n *\r\n * @param value - The value to end before. The argument type depends on which\r\n * `orderBy*()` function was used in this query. Specify a value that matches\r\n * the `orderBy*()` type. When used in combination with `orderByKey()`, the\r\n * value must be a string.\r\n * @param key - The child key to end before, among the children with the\r\n * previously specified priority. This argument is only allowed if ordering by\r\n * child, value, or priority.\r\n */\r\nfunction endBefore(value, key) {\r\n    validateKey('endBefore', 'key', key, true);\r\n    return new QueryEndBeforeConstraint(value, key);\r\n}\r\nclass QueryStartAtConstraint extends QueryConstraint {\r\n    constructor(_value, _key) {\r\n        super();\r\n        this._value = _value;\r\n        this._key = _key;\r\n    }\r\n    _apply(query) {\r\n        validateFirebaseDataArg('startAt', this._value, query._path, true);\r\n        const newParams = queryParamsStartAt(query._queryParams, this._value, this._key);\r\n        validateLimit(newParams);\r\n        validateQueryEndpoints(newParams);\r\n        if (query._queryParams.hasStart()) {\r\n            throw new Error('startAt: Starting point was already set (by another call to startAt, ' +\r\n                'startBefore or equalTo).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a `QueryConstraint` with the specified starting point.\r\n *\r\n * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`\r\n * allows you to choose arbitrary starting and ending points for your queries.\r\n *\r\n * The starting point is inclusive, so children with exactly the specified value\r\n * will be included in the query. The optional key argument can be used to\r\n * further limit the range of the query. If it is specified, then children that\r\n * have exactly the specified value must also have a key name greater than or\r\n * equal to the specified key.\r\n *\r\n * You can read more about `startAt()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.\r\n *\r\n * @param value - The value to start at. The argument type depends on which\r\n * `orderBy*()` function was used in this query. Specify a value that matches\r\n * the `orderBy*()` type. When used in combination with `orderByKey()`, the\r\n * value must be a string.\r\n * @param key - The child key to start at. This argument is only allowed if\r\n * ordering by child, value, or priority.\r\n */\r\nfunction startAt(value = null, key) {\r\n    validateKey('startAt', 'key', key, true);\r\n    return new QueryStartAtConstraint(value, key);\r\n}\r\nclass QueryStartAfterConstraint extends QueryConstraint {\r\n    constructor(_value, _key) {\r\n        super();\r\n        this._value = _value;\r\n        this._key = _key;\r\n    }\r\n    _apply(query) {\r\n        validateFirebaseDataArg('startAfter', this._value, query._path, false);\r\n        const newParams = queryParamsStartAfter(query._queryParams, this._value, this._key);\r\n        validateLimit(newParams);\r\n        validateQueryEndpoints(newParams);\r\n        if (query._queryParams.hasStart()) {\r\n            throw new Error('startAfter: Starting point was already set (by another call to startAt, ' +\r\n                'startAfter, or equalTo).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a `QueryConstraint` with the specified starting point (exclusive).\r\n *\r\n * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`\r\n * allows you to choose arbitrary starting and ending points for your queries.\r\n *\r\n * The starting point is exclusive. If only a value is provided, children\r\n * with a value greater than the specified value will be included in the query.\r\n * If a key is specified, then children must have a value greater than or equal\r\n * to the specified value and a a key name greater than the specified key.\r\n *\r\n * @param value - The value to start after. The argument type depends on which\r\n * `orderBy*()` function was used in this query. Specify a value that matches\r\n * the `orderBy*()` type. When used in combination with `orderByKey()`, the\r\n * value must be a string.\r\n * @param key - The child key to start after. This argument is only allowed if\r\n * ordering by child, value, or priority.\r\n */\r\nfunction startAfter(value, key) {\r\n    validateKey('startAfter', 'key', key, true);\r\n    return new QueryStartAfterConstraint(value, key);\r\n}\r\nclass QueryLimitToFirstConstraint extends QueryConstraint {\r\n    constructor(_limit) {\r\n        super();\r\n        this._limit = _limit;\r\n    }\r\n    _apply(query) {\r\n        if (query._queryParams.hasLimit()) {\r\n            throw new Error('limitToFirst: Limit was already set (by another call to limitToFirst ' +\r\n                'or limitToLast).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, queryParamsLimitToFirst(query._queryParams, this._limit), query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that if limited to the first specific number\r\n * of children.\r\n *\r\n * The `limitToFirst()` method is used to set a maximum number of children to be\r\n * synced for a given callback. If we set a limit of 100, we will initially only\r\n * receive up to 100 `child_added` events. If we have fewer than 100 messages\r\n * stored in our Database, a `child_added` event will fire for each message.\r\n * However, if we have over 100 messages, we will only receive a `child_added`\r\n * event for the first 100 ordered messages. As items change, we will receive\r\n * `child_removed` events for each item that drops out of the active list so\r\n * that the total number stays at 100.\r\n *\r\n * You can read more about `limitToFirst()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.\r\n *\r\n * @param limit - The maximum number of nodes to include in this query.\r\n */\r\nfunction limitToFirst(limit) {\r\n    if (typeof limit !== 'number' || Math.floor(limit) !== limit || limit <= 0) {\r\n        throw new Error('limitToFirst: First argument must be a positive integer.');\r\n    }\r\n    return new QueryLimitToFirstConstraint(limit);\r\n}\r\nclass QueryLimitToLastConstraint extends QueryConstraint {\r\n    constructor(_limit) {\r\n        super();\r\n        this._limit = _limit;\r\n    }\r\n    _apply(query) {\r\n        if (query._queryParams.hasLimit()) {\r\n            throw new Error('limitToLast: Limit was already set (by another call to limitToFirst ' +\r\n                'or limitToLast).');\r\n        }\r\n        return new QueryImpl(query._repo, query._path, queryParamsLimitToLast(query._queryParams, this._limit), query._orderByCalled);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that is limited to return only the last\r\n * specified number of children.\r\n *\r\n * The `limitToLast()` method is used to set a maximum number of children to be\r\n * synced for a given callback. If we set a limit of 100, we will initially only\r\n * receive up to 100 `child_added` events. If we have fewer than 100 messages\r\n * stored in our Database, a `child_added` event will fire for each message.\r\n * However, if we have over 100 messages, we will only receive a `child_added`\r\n * event for the last 100 ordered messages. As items change, we will receive\r\n * `child_removed` events for each item that drops out of the active list so\r\n * that the total number stays at 100.\r\n *\r\n * You can read more about `limitToLast()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.\r\n *\r\n * @param limit - The maximum number of nodes to include in this query.\r\n */\r\nfunction limitToLast(limit) {\r\n    if (typeof limit !== 'number' || Math.floor(limit) !== limit || limit <= 0) {\r\n        throw new Error('limitToLast: First argument must be a positive integer.');\r\n    }\r\n    return new QueryLimitToLastConstraint(limit);\r\n}\r\nclass QueryOrderByChildConstraint extends QueryConstraint {\r\n    constructor(_path) {\r\n        super();\r\n        this._path = _path;\r\n    }\r\n    _apply(query) {\r\n        validateNoPreviousOrderByCall(query, 'orderByChild');\r\n        const parsedPath = new Path(this._path);\r\n        if (pathIsEmpty(parsedPath)) {\r\n            throw new Error('orderByChild: cannot pass in empty path. Use orderByValue() instead.');\r\n        }\r\n        const index = new PathIndex(parsedPath);\r\n        const newParams = queryParamsOrderBy(query._queryParams, index);\r\n        validateQueryEndpoints(newParams);\r\n        return new QueryImpl(query._repo, query._path, newParams, \r\n        /*orderByCalled=*/ true);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that orders by the specified child key.\r\n *\r\n * Queries can only order by one key at a time. Calling `orderByChild()`\r\n * multiple times on the same query is an error.\r\n *\r\n * Firebase queries allow you to order your data by any child key on the fly.\r\n * However, if you know in advance what your indexes will be, you can define\r\n * them via the .indexOn rule in your Security Rules for better performance. See\r\n * the{@link https://firebase.google.com/docs/database/security/indexing-data}\r\n * rule for more information.\r\n *\r\n * You can read more about `orderByChild()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.\r\n *\r\n * @param path - The path to order by.\r\n */\r\nfunction orderByChild(path) {\r\n    if (path === '$key') {\r\n        throw new Error('orderByChild: \"$key\" is invalid.  Use orderByKey() instead.');\r\n    }\r\n    else if (path === '$priority') {\r\n        throw new Error('orderByChild: \"$priority\" is invalid.  Use orderByPriority() instead.');\r\n    }\r\n    else if (path === '$value') {\r\n        throw new Error('orderByChild: \"$value\" is invalid.  Use orderByValue() instead.');\r\n    }\r\n    validatePathString('orderByChild', 'path', path, false);\r\n    return new QueryOrderByChildConstraint(path);\r\n}\r\nclass QueryOrderByKeyConstraint extends QueryConstraint {\r\n    _apply(query) {\r\n        validateNoPreviousOrderByCall(query, 'orderByKey');\r\n        const newParams = queryParamsOrderBy(query._queryParams, KEY_INDEX);\r\n        validateQueryEndpoints(newParams);\r\n        return new QueryImpl(query._repo, query._path, newParams, \r\n        /*orderByCalled=*/ true);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that orders by the key.\r\n *\r\n * Sorts the results of a query by their (ascending) key values.\r\n *\r\n * You can read more about `orderByKey()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.\r\n */\r\nfunction orderByKey() {\r\n    return new QueryOrderByKeyConstraint();\r\n}\r\nclass QueryOrderByPriorityConstraint extends QueryConstraint {\r\n    _apply(query) {\r\n        validateNoPreviousOrderByCall(query, 'orderByPriority');\r\n        const newParams = queryParamsOrderBy(query._queryParams, PRIORITY_INDEX);\r\n        validateQueryEndpoints(newParams);\r\n        return new QueryImpl(query._repo, query._path, newParams, \r\n        /*orderByCalled=*/ true);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that orders by priority.\r\n *\r\n * Applications need not use priority but can order collections by\r\n * ordinary properties (see\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}\r\n * for alternatives to priority.\r\n */\r\nfunction orderByPriority() {\r\n    return new QueryOrderByPriorityConstraint();\r\n}\r\nclass QueryOrderByValueConstraint extends QueryConstraint {\r\n    _apply(query) {\r\n        validateNoPreviousOrderByCall(query, 'orderByValue');\r\n        const newParams = queryParamsOrderBy(query._queryParams, VALUE_INDEX);\r\n        validateQueryEndpoints(newParams);\r\n        return new QueryImpl(query._repo, query._path, newParams, \r\n        /*orderByCalled=*/ true);\r\n    }\r\n}\r\n/**\r\n * Creates a new `QueryConstraint` that orders by value.\r\n *\r\n * If the children of a query are all scalar values (string, number, or\r\n * boolean), you can order the results by their (ascending) values.\r\n *\r\n * You can read more about `orderByValue()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.\r\n */\r\nfunction orderByValue() {\r\n    return new QueryOrderByValueConstraint();\r\n}\r\nclass QueryEqualToValueConstraint extends QueryConstraint {\r\n    constructor(_value, _key) {\r\n        super();\r\n        this._value = _value;\r\n        this._key = _key;\r\n    }\r\n    _apply(query) {\r\n        validateFirebaseDataArg('equalTo', this._value, query._path, false);\r\n        if (query._queryParams.hasStart()) {\r\n            throw new Error('equalTo: Starting point was already set (by another call to startAt/startAfter or ' +\r\n                'equalTo).');\r\n        }\r\n        if (query._queryParams.hasEnd()) {\r\n            throw new Error('equalTo: Ending point was already set (by another call to endAt/endBefore or ' +\r\n                'equalTo).');\r\n        }\r\n        return new QueryEndAtConstraint(this._value, this._key)._apply(new QueryStartAtConstraint(this._value, this._key)._apply(query));\r\n    }\r\n}\r\n/**\r\n * Creates a `QueryConstraint` that includes children that match the specified\r\n * value.\r\n *\r\n * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`\r\n * allows you to choose arbitrary starting and ending points for your queries.\r\n *\r\n * The optional key argument can be used to further limit the range of the\r\n * query. If it is specified, then children that have exactly the specified\r\n * value must also have exactly the specified key as their key name. This can be\r\n * used to filter result sets with many matches for the same value.\r\n *\r\n * You can read more about `equalTo()` in\r\n * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.\r\n *\r\n * @param value - The value to match for. The argument type depends on which\r\n * `orderBy*()` function was used in this query. Specify a value that matches\r\n * the `orderBy*()` type. When used in combination with `orderByKey()`, the\r\n * value must be a string.\r\n * @param key - The child key to start at, among the children with the\r\n * previously specified priority. This argument is only allowed if ordering by\r\n * child, value, or priority.\r\n */\r\nfunction equalTo(value, key) {\r\n    validateKey('equalTo', 'key', key, true);\r\n    return new QueryEqualToValueConstraint(value, key);\r\n}\r\n/**\r\n * Creates a new immutable instance of `Query` that is extended to also include\r\n * additional query constraints.\r\n *\r\n * @param query - The Query instance to use as a base for the new constraints.\r\n * @param queryConstraints - The list of `QueryConstraint`s to apply.\r\n * @throws if any of the provided query constraints cannot be combined with the\r\n * existing or new constraints.\r\n */\r\nfunction query(query, ...queryConstraints) {\r\n    let queryImpl = getModularInstance(query);\r\n    for (const constraint of queryConstraints) {\r\n        queryImpl = constraint._apply(queryImpl);\r\n    }\r\n    return queryImpl;\r\n}\r\n/**\r\n * Define reference constructor in various modules\r\n *\r\n * We are doing this here to avoid several circular\r\n * dependency issues\r\n */\r\nsyncPointSetReferenceConstructor(ReferenceImpl);\r\nsyncTreeSetReferenceConstructor(ReferenceImpl);\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * This variable is also defined in the firebase Node.js Admin SDK. Before\r\n * modifying this definition, consult the definition in:\r\n *\r\n * https://github.com/firebase/firebase-admin-node\r\n *\r\n * and make sure the two are consistent.\r\n */\r\nconst FIREBASE_DATABASE_EMULATOR_HOST_VAR = 'FIREBASE_DATABASE_EMULATOR_HOST';\r\n/**\r\n * Creates and caches `Repo` instances.\r\n */\r\nconst repos = {};\r\n/**\r\n * If true, any new `Repo` will be created to use `ReadonlyRestClient` (for testing purposes).\r\n */\r\nlet useRestClient = false;\r\n/**\r\n * Update an existing `Repo` in place to point to a new host/port.\r\n */\r\nfunction repoManagerApplyEmulatorSettings(repo, host, port, tokenProvider) {\r\n    repo.repoInfo_ = new RepoInfo(`${host}:${port}`, \r\n    /* secure= */ false, repo.repoInfo_.namespace, repo.repoInfo_.webSocketOnly, repo.repoInfo_.nodeAdmin, repo.repoInfo_.persistenceKey, repo.repoInfo_.includeNamespaceInQueryParams);\r\n    if (tokenProvider) {\r\n        repo.authTokenProvider_ = tokenProvider;\r\n    }\r\n}\r\n/**\r\n * This function should only ever be called to CREATE a new database instance.\r\n * @internal\r\n */\r\nfunction repoManagerDatabaseFromApp(app, authProvider, appCheckProvider, url, nodeAdmin) {\r\n    let dbUrl = url || app.options.databaseURL;\r\n    if (dbUrl === undefined) {\r\n        if (!app.options.projectId) {\r\n            fatal(\"Can't determine Firebase Database URL. Be sure to include \" +\r\n                ' a Project ID when calling firebase.initializeApp().');\r\n        }\r\n        log('Using default host for project ', app.options.projectId);\r\n        dbUrl = `${app.options.projectId}-default-rtdb.firebaseio.com`;\r\n    }\r\n    let parsedUrl = parseRepoInfo(dbUrl, nodeAdmin);\r\n    let repoInfo = parsedUrl.repoInfo;\r\n    let isEmulator;\r\n    let dbEmulatorHost = undefined;\r\n    if (typeof process !== 'undefined') {\r\n        dbEmulatorHost = process.env[FIREBASE_DATABASE_EMULATOR_HOST_VAR];\r\n    }\r\n    if (dbEmulatorHost) {\r\n        isEmulator = true;\r\n        dbUrl = `http://${dbEmulatorHost}?ns=${repoInfo.namespace}`;\r\n        parsedUrl = parseRepoInfo(dbUrl, nodeAdmin);\r\n        repoInfo = parsedUrl.repoInfo;\r\n    }\r\n    else {\r\n        isEmulator = !parsedUrl.repoInfo.secure;\r\n    }\r\n    const authTokenProvider = nodeAdmin && isEmulator\r\n        ? new EmulatorTokenProvider(EmulatorTokenProvider.OWNER)\r\n        : new FirebaseAuthTokenProvider(app.name, app.options, authProvider);\r\n    validateUrl('Invalid Firebase Database URL', parsedUrl);\r\n    if (!pathIsEmpty(parsedUrl.path)) {\r\n        fatal('Database URL must point to the root of a Firebase Database ' +\r\n            '(not including a child path).');\r\n    }\r\n    const repo = repoManagerCreateRepo(repoInfo, app, authTokenProvider, new AppCheckTokenProvider(app.name, appCheckProvider));\r\n    return new Database(repo, app);\r\n}\r\n/**\r\n * Remove the repo and make sure it is disconnected.\r\n *\r\n */\r\nfunction repoManagerDeleteRepo(repo, appName) {\r\n    const appRepos = repos[appName];\r\n    // This should never happen...\r\n    if (!appRepos || appRepos[repo.key] !== repo) {\r\n        fatal(`Database ${appName}(${repo.repoInfo_}) has already been deleted.`);\r\n    }\r\n    repoInterrupt(repo);\r\n    delete appRepos[repo.key];\r\n}\r\n/**\r\n * Ensures a repo doesn't already exist and then creates one using the\r\n * provided app.\r\n *\r\n * @param repoInfo - The metadata about the Repo\r\n * @returns The Repo object for the specified server / repoName.\r\n */\r\nfunction repoManagerCreateRepo(repoInfo, app, authTokenProvider, appCheckProvider) {\r\n    let appRepos = repos[app.name];\r\n    if (!appRepos) {\r\n        appRepos = {};\r\n        repos[app.name] = appRepos;\r\n    }\r\n    let repo = appRepos[repoInfo.toURLString()];\r\n    if (repo) {\r\n        fatal('Database initialized multiple times. Please make sure the format of the database URL matches with each database() call.');\r\n    }\r\n    repo = new Repo(repoInfo, useRestClient, authTokenProvider, appCheckProvider);\r\n    appRepos[repoInfo.toURLString()] = repo;\r\n    return repo;\r\n}\r\n/**\r\n * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.\r\n */\r\nfunction repoManagerForceRestClient(forceRestClient) {\r\n    useRestClient = forceRestClient;\r\n}\r\n/**\r\n * Class representing a Firebase Realtime Database.\r\n */\r\nclass Database {\r\n    /** @hideconstructor */\r\n    constructor(_repoInternal, \r\n    /** The {@link @firebase/app#FirebaseApp} associated with this Realtime Database instance. */\r\n    app) {\r\n        this._repoInternal = _repoInternal;\r\n        this.app = app;\r\n        /** Represents a `Database` instance. */\r\n        this['type'] = 'database';\r\n        /** Track if the instance has been used (root or repo accessed) */\r\n        this._instanceStarted = false;\r\n    }\r\n    get _repo() {\r\n        if (!this._instanceStarted) {\r\n            repoStart(this._repoInternal, this.app.options.appId, this.app.options['databaseAuthVariableOverride']);\r\n            this._instanceStarted = true;\r\n        }\r\n        return this._repoInternal;\r\n    }\r\n    get _root() {\r\n        if (!this._rootInternal) {\r\n            this._rootInternal = new ReferenceImpl(this._repo, newEmptyPath());\r\n        }\r\n        return this._rootInternal;\r\n    }\r\n    _delete() {\r\n        if (this._rootInternal !== null) {\r\n            repoManagerDeleteRepo(this._repo, this.app.name);\r\n            this._repoInternal = null;\r\n            this._rootInternal = null;\r\n        }\r\n        return Promise.resolve();\r\n    }\r\n    _checkNotDeleted(apiName) {\r\n        if (this._rootInternal === null) {\r\n            fatal('Cannot call ' + apiName + ' on a deleted database.');\r\n        }\r\n    }\r\n}\r\n/**\r\n * Returns the instance of the Realtime Database SDK that is associated\r\n * with the provided {@link @firebase/app#FirebaseApp}. Initializes a new instance with\r\n * with default settings if no instance exists or if the existing instance uses\r\n * a custom database URL.\r\n *\r\n * @param app - The {@link @firebase/app#FirebaseApp} instance that the returned Realtime\r\n * Database instance is associated with.\r\n * @param url - The URL of the Realtime Database instance to connect to. If not\r\n * provided, the SDK connects to the default instance of the Firebase App.\r\n * @returns The `Database` instance of the provided app.\r\n */\r\nfunction getDatabase(app = getApp(), url) {\r\n    return _getProvider(app, 'database').getImmediate({\r\n        identifier: url\r\n    });\r\n}\r\n/**\r\n * Modify the provided instance to communicate with the Realtime Database\r\n * emulator.\r\n *\r\n * <p>Note: This method must be called before performing any other operation.\r\n *\r\n * @param db - The instance to modify.\r\n * @param host - The emulator host (ex: localhost)\r\n * @param port - The emulator port (ex: 8080)\r\n * @param options.mockUserToken - the mock auth token to use for unit testing Security Rules\r\n */\r\nfunction connectDatabaseEmulator(db, host, port, options = {}) {\r\n    db = getModularInstance(db);\r\n    db._checkNotDeleted('useEmulator');\r\n    if (db._instanceStarted) {\r\n        fatal('Cannot call useEmulator() after instance has already been initialized.');\r\n    }\r\n    const repo = db._repoInternal;\r\n    let tokenProvider = undefined;\r\n    if (repo.repoInfo_.nodeAdmin) {\r\n        if (options.mockUserToken) {\r\n            fatal('mockUserToken is not supported by the Admin SDK. For client access with mock users, please use the \"firebase\" package instead of \"firebase-admin\".');\r\n        }\r\n        tokenProvider = new EmulatorTokenProvider(EmulatorTokenProvider.OWNER);\r\n    }\r\n    else if (options.mockUserToken) {\r\n        const token = typeof options.mockUserToken === 'string'\r\n            ? options.mockUserToken\r\n            : createMockUserToken(options.mockUserToken, db.app.options.projectId);\r\n        tokenProvider = new EmulatorTokenProvider(token);\r\n    }\r\n    // Modify the repo to apply emulator settings\r\n    repoManagerApplyEmulatorSettings(repo, host, port, tokenProvider);\r\n}\r\n/**\r\n * Disconnects from the server (all Database operations will be completed\r\n * offline).\r\n *\r\n * The client automatically maintains a persistent connection to the Database\r\n * server, which will remain active indefinitely and reconnect when\r\n * disconnected. However, the `goOffline()` and `goOnline()` methods may be used\r\n * to control the client connection in cases where a persistent connection is\r\n * undesirable.\r\n *\r\n * While offline, the client will no longer receive data updates from the\r\n * Database. However, all Database operations performed locally will continue to\r\n * immediately fire events, allowing your application to continue behaving\r\n * normally. Additionally, each operation performed locally will automatically\r\n * be queued and retried upon reconnection to the Database server.\r\n *\r\n * To reconnect to the Database and begin receiving remote events, see\r\n * `goOnline()`.\r\n *\r\n * @param db - The instance to disconnect.\r\n */\r\nfunction goOffline(db) {\r\n    db = getModularInstance(db);\r\n    db._checkNotDeleted('goOffline');\r\n    repoInterrupt(db._repo);\r\n}\r\n/**\r\n * Reconnects to the server and synchronizes the offline Database state\r\n * with the server state.\r\n *\r\n * This method should be used after disabling the active connection with\r\n * `goOffline()`. Once reconnected, the client will transmit the proper data\r\n * and fire the appropriate events so that your client \"catches up\"\r\n * automatically.\r\n *\r\n * @param db - The instance to reconnect.\r\n */\r\nfunction goOnline(db) {\r\n    db = getModularInstance(db);\r\n    db._checkNotDeleted('goOnline');\r\n    repoResume(db._repo);\r\n}\r\nfunction enableLogging(logger, persistent) {\r\n    enableLogging$1(logger, persistent);\r\n}\n\n/**\r\n * @license\r\n * Copyright 2021 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nfunction registerDatabase(variant) {\r\n    setSDKVersion(SDK_VERSION$1);\r\n    _registerComponent(new Component('database', (container, { instanceIdentifier: url }) => {\r\n        const app = container.getProvider('app').getImmediate();\r\n        const authProvider = container.getProvider('auth-internal');\r\n        const appCheckProvider = container.getProvider('app-check-internal');\r\n        return repoManagerDatabaseFromApp(app, authProvider, appCheckProvider, url);\r\n    }, \"PUBLIC\" /* PUBLIC */).setMultipleInstances(true));\r\n    registerVersion(name, version, variant);\r\n    // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation\r\n    registerVersion(name, version, 'esm2017');\r\n}\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nconst SERVER_TIMESTAMP = {\r\n    '.sv': 'timestamp'\r\n};\r\n/**\r\n * Returns a placeholder value for auto-populating the current timestamp (time\r\n * since the Unix epoch, in milliseconds) as determined by the Firebase\r\n * servers.\r\n */\r\nfunction serverTimestamp() {\r\n    return SERVER_TIMESTAMP;\r\n}\r\n/**\r\n * Returns a placeholder value that can be used to atomically increment the\r\n * current database value by the provided delta.\r\n *\r\n * @param delta - the amount to modify the current value atomically.\r\n * @returns A placeholder value for modifying data atomically server-side.\r\n */\r\nfunction increment(delta) {\r\n    return {\r\n        '.sv': {\r\n            'increment': delta\r\n        }\r\n    };\r\n}\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\n/**\r\n * A type for the resolve value of {@link runTransaction}.\r\n */\r\nclass TransactionResult {\r\n    /** @hideconstructor */\r\n    constructor(\r\n    /** Whether the transaction was successfully committed. */\r\n    committed, \r\n    /** The resulting data snapshot. */\r\n    snapshot) {\r\n        this.committed = committed;\r\n        this.snapshot = snapshot;\r\n    }\r\n    /** Returns a JSON-serializable representation of this object. */\r\n    toJSON() {\r\n        return { committed: this.committed, snapshot: this.snapshot.toJSON() };\r\n    }\r\n}\r\n/**\r\n * Atomically modifies the data at this location.\r\n *\r\n * Atomically modify the data at this location. Unlike a normal `set()`, which\r\n * just overwrites the data regardless of its previous value, `runTransaction()` is\r\n * used to modify the existing value to a new value, ensuring there are no\r\n * conflicts with other clients writing to the same location at the same time.\r\n *\r\n * To accomplish this, you pass `runTransaction()` an update function which is\r\n * used to transform the current value into a new value. If another client\r\n * writes to the location before your new value is successfully written, your\r\n * update function will be called again with the new current value, and the\r\n * write will be retried. This will happen repeatedly until your write succeeds\r\n * without conflict or you abort the transaction by not returning a value from\r\n * your update function.\r\n *\r\n * Note: Modifying data with `set()` will cancel any pending transactions at\r\n * that location, so extreme care should be taken if mixing `set()` and\r\n * `runTransaction()` to update the same data.\r\n *\r\n * Note: When using transactions with Security and Firebase Rules in place, be\r\n * aware that a client needs `.read` access in addition to `.write` access in\r\n * order to perform a transaction. This is because the client-side nature of\r\n * transactions requires the client to read the data in order to transactionally\r\n * update it.\r\n *\r\n * @param ref - The location to atomically modify.\r\n * @param transactionUpdate - A developer-supplied function which will be passed\r\n * the current data stored at this location (as a JavaScript object). The\r\n * function should return the new value it would like written (as a JavaScript\r\n * object). If `undefined` is returned (i.e. you return with no arguments) the\r\n * transaction will be aborted and the data at this location will not be\r\n * modified.\r\n * @param options - An options object to configure transactions.\r\n * @returns A `Promise` that can optionally be used instead of the `onComplete`\r\n * callback to handle success and failure.\r\n */\r\nfunction runTransaction(ref, \r\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\r\ntransactionUpdate, options) {\r\n    var _a;\r\n    ref = getModularInstance(ref);\r\n    validateWritablePath('Reference.transaction', ref._path);\r\n    if (ref.key === '.length' || ref.key === '.keys') {\r\n        throw ('Reference.transaction failed: ' + ref.key + ' is a read-only object.');\r\n    }\r\n    const applyLocally = (_a = options === null || options === void 0 ? void 0 : options.applyLocally) !== null && _a !== void 0 ? _a : true;\r\n    const deferred = new Deferred();\r\n    const promiseComplete = (error, committed, node) => {\r\n        let dataSnapshot = null;\r\n        if (error) {\r\n            deferred.reject(error);\r\n        }\r\n        else {\r\n            dataSnapshot = new DataSnapshot(node, new ReferenceImpl(ref._repo, ref._path), PRIORITY_INDEX);\r\n            deferred.resolve(new TransactionResult(committed, dataSnapshot));\r\n        }\r\n    };\r\n    // Add a watch to make sure we get server updates.\r\n    const unwatcher = onValue(ref, () => { });\r\n    repoStartTransaction(ref._repo, ref._path, transactionUpdate, promiseComplete, unwatcher, applyLocally);\r\n    return deferred.promise;\r\n}\n\n/**\r\n * @license\r\n * Copyright 2017 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nPersistentConnection;\r\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\r\nPersistentConnection.prototype.simpleListen = function (pathString, onComplete) {\r\n    this.sendRequest('q', { p: pathString }, onComplete);\r\n};\r\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\r\nPersistentConnection.prototype.echo = function (data, onEcho) {\r\n    this.sendRequest('echo', { d: data }, onEcho);\r\n};\r\n// RealTimeConnection properties that we use in tests.\r\nConnection;\r\n/**\r\n * @internal\r\n */\r\nconst hijackHash = function (newHash) {\r\n    const oldPut = PersistentConnection.prototype.put;\r\n    PersistentConnection.prototype.put = function (pathString, data, onComplete, hash) {\r\n        if (hash !== undefined) {\r\n            hash = newHash();\r\n        }\r\n        oldPut.call(this, pathString, data, onComplete, hash);\r\n    };\r\n    return function () {\r\n        PersistentConnection.prototype.put = oldPut;\r\n    };\r\n};\r\nRepoInfo;\r\n/**\r\n * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.\r\n * @internal\r\n */\r\nconst forceRestClient = function (forceRestClient) {\r\n    repoManagerForceRestClient(forceRestClient);\r\n};\n\n/**\r\n * Firebase Realtime Database\r\n *\r\n * @packageDocumentation\r\n */\r\nregisterDatabase();\n\nexport { DataSnapshot, Database, OnDisconnect, QueryConstraint, TransactionResult, QueryImpl as _QueryImpl, QueryParams as _QueryParams, ReferenceImpl as _ReferenceImpl, forceRestClient as _TEST_ACCESS_forceRestClient, hijackHash as _TEST_ACCESS_hijackHash, repoManagerDatabaseFromApp as _repoManagerDatabaseFromApp, setSDKVersion as _setSDKVersion, validatePathString as _validatePathString, validateWritablePath as _validateWritablePath, child, connectDatabaseEmulator, enableLogging, endAt, endBefore, equalTo, get, getDatabase, goOffline, goOnline, increment, limitToFirst, limitToLast, off, onChildAdded, onChildChanged, onChildMoved, onChildRemoved, onDisconnect, onValue, orderByChild, orderByKey, orderByPriority, orderByValue, push, query, ref, refFromURL, remove, runTransaction, serverTimestamp, set, setPriority, setWithPriority, startAfter, startAt, update };\n//# sourceMappingURL=index.esm2017.js.map\n","!function(t,e){\"object\"==typeof exports&&\"undefined\"!=typeof module?module.exports=e():\"function\"==typeof define&&define.amd?define(e):(t=\"undefined\"!=typeof globalThis?globalThis:t||self).dayjs=e()}(this,(function(){\"use strict\";var t=1e3,e=6e4,n=36e5,r=\"millisecond\",i=\"second\",s=\"minute\",u=\"hour\",a=\"day\",o=\"week\",f=\"month\",h=\"quarter\",c=\"year\",d=\"date\",$=\"Invalid 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t,s,n=1e3,i=6e4,e=36e5,r=864e5,o=/\\[([^\\]]+)]|Y{1,4}|M{1,4}|D{1,2}|d{1,4}|H{1,2}|h{1,2}|a|A|m{1,2}|s{1,2}|Z{1,2}|SSS/g,u=31536e6,h=2592e6,a=/^(-|\\+)?P(?:([-+]?[0-9,.]*)Y)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)W)?(?:([-+]?[0-9,.]*)D)?(?:T(?:([-+]?[0-9,.]*)H)?(?:([-+]?[0-9,.]*)M)?(?:([-+]?[0-9,.]*)S)?)?$/,d={years:u,months:h,days:r,hours:e,minutes:i,seconds:n,milliseconds:1,weeks:6048e5},c=function(t){return t instanceof p},f=function(t,s,n){return new p(t,n,s.$l)},m=function(t){return s.p(t)+\"s\"},l=function(t){return t<0},$=function(t){return l(t)?Math.ceil(t):Math.floor(t)},y=function(t){return Math.abs(t)},g=function(t,s){return t?l(t)?{negative:!0,format:\"\"+y(t)+s}:{negative:!1,format:\"\"+t+s}:{negative:!1,format:\"\"}},p=function(){function l(t,s,n){var i=this;if(this.$d={},this.$l=n,void 0===t&&(this.$ms=0,this.parseFromMilliseconds()),s)return f(t*d[m(s)],this);if(\"number\"==typeof t)return this.$ms=t,this.parseFromMilliseconds(),this;if(\"object\"==typeof t)return Object.keys(t).forEach((function(s){i.$d[m(s)]=t[s]})),this.calMilliseconds(),this;if(\"string\"==typeof t){var e=t.match(a);if(e){var r=e.slice(2).map((function(t){return null!=t?Number(t):0}));return this.$d.years=r[0],this.$d.months=r[1],this.$d.weeks=r[2],this.$d.days=r[3],this.$d.hours=r[4],this.$d.minutes=r[5],this.$d.seconds=r[6],this.calMilliseconds(),this}}return this}var y=l.prototype;return y.calMilliseconds=function(){var t=this;this.$ms=Object.keys(this.$d).reduce((function(s,n){return s+(t.$d[n]||0)*d[n]}),0)},y.parseFromMilliseconds=function(){var t=this.$ms;this.$d.years=$(t/u),t%=u,this.$d.months=$(t/h),t%=h,this.$d.days=$(t/r),t%=r,this.$d.hours=$(t/e),t%=e,this.$d.minutes=$(t/i),t%=i,this.$d.seconds=$(t/n),t%=n,this.$d.milliseconds=t},y.toISOString=function(){var t=g(this.$d.years,\"Y\"),s=g(this.$d.months,\"M\"),n=+this.$d.days||0;this.$d.weeks&&(n+=7*this.$d.weeks);var i=g(n,\"D\"),e=g(this.$d.hours,\"H\"),r=g(this.$d.minutes,\"M\"),o=this.$d.seconds||0;this.$d.milliseconds&&(o+=this.$d.milliseconds/1e3);var u=g(o,\"S\"),h=t.negative||s.negative||i.negative||e.negative||r.negative||u.negative,a=e.format||r.format||u.format?\"T\":\"\",d=(h?\"-\":\"\")+\"P\"+t.format+s.format+i.format+a+e.format+r.format+u.format;return\"P\"===d||\"-P\"===d?\"P0D\":d},y.toJSON=function(){return this.toISOString()},y.format=function(t){var n=t||\"YYYY-MM-DDTHH:mm:ss\",i={Y:this.$d.years,YY:s.s(this.$d.years,2,\"0\"),YYYY:s.s(this.$d.years,4,\"0\"),M:this.$d.months,MM:s.s(this.$d.months,2,\"0\"),D:this.$d.days,DD:s.s(this.$d.days,2,\"0\"),H:this.$d.hours,HH:s.s(this.$d.hours,2,\"0\"),m:this.$d.minutes,mm:s.s(this.$d.minutes,2,\"0\"),s:this.$d.seconds,ss:s.s(this.$d.seconds,2,\"0\"),SSS:s.s(this.$d.milliseconds,3,\"0\")};return n.replace(o,(function(t,s){return s||String(i[t])}))},y.as=function(t){return this.$ms/d[m(t)]},y.get=function(t){var s=this.$ms,n=m(t);return\"milliseconds\"===n?s%=1e3:s=\"weeks\"===n?$(s/d[n]):this.$d[n],0===s?0:s},y.add=function(t,s,n){var i;return i=s?t*d[m(s)]:c(t)?t.$ms:f(t,this).$ms,f(this.$ms+i*(n?-1:1),this)},y.subtract=function(t,s){return this.add(t,s,!0)},y.locale=function(t){var s=this.clone();return s.$l=t,s},y.clone=function(){return f(this.$ms,this)},y.humanize=function(s){return t().add(this.$ms,\"ms\").locale(this.$l).fromNow(!s)},y.milliseconds=function(){return this.get(\"milliseconds\")},y.asMilliseconds=function(){return this.as(\"milliseconds\")},y.seconds=function(){return this.get(\"seconds\")},y.asSeconds=function(){return this.as(\"seconds\")},y.minutes=function(){return this.get(\"minutes\")},y.asMinutes=function(){return this.as(\"minutes\")},y.hours=function(){return this.get(\"hours\")},y.asHours=function(){return this.as(\"hours\")},y.days=function(){return this.get(\"days\")},y.asDays=function(){return this.as(\"days\")},y.weeks=function(){return this.get(\"weeks\")},y.asWeeks=function(){return this.as(\"weeks\")},y.months=function(){return this.get(\"months\")},y.asMonths=function(){return this.as(\"months\")},y.years=function(){return this.get(\"years\")},y.asYears=function(){return this.as(\"years\")},l}();return function(n,i,e){t=e,s=e().$utils(),e.duration=function(t,s){var n=e.locale();return f(t,{$l:n},s)},e.isDuration=c;var r=i.prototype.add,o=i.prototype.subtract;i.prototype.add=function(t,s){return c(t)&&(t=t.asMilliseconds()),r.bind(this)(t,s)},i.prototype.subtract=function(t,s){return c(t)&&(t=t.asMilliseconds()),o.bind(this)(t,s)}}}));","import { registerVersion } from '@firebase/app';\nexport * from '@firebase/app';\n\nvar name = \"firebase\";\nvar version = \"9.6.0\";\n\n/**\r\n * @license\r\n * Copyright 2020 Google LLC\r\n *\r\n * Licensed under the Apache License, Version 2.0 (the \"License\");\r\n * you may not use this file except in compliance with the License.\r\n * You may obtain a copy of the License at\r\n *\r\n *   http://www.apache.org/licenses/LICENSE-2.0\r\n *\r\n * Unless required by applicable law or agreed to in writing, software\r\n * distributed under the License is distributed on an \"AS IS\" BASIS,\r\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n * See the License for the specific language governing permissions and\r\n * limitations under the License.\r\n */\r\nregisterVersion(name, version, 'app');\n//# sourceMappingURL=index.esm.js.map\n","import { initializeApp } from 'firebase/app';\nimport { getDatabase } from 'firebase/database';\nconst firebaseConfig = {\n    apiKey: 'AIzaSyC7rv26peiXSqdpqFG1Y9oRk1IXsGC76PI',\n    authDomain: 'iot-stone.firebaseapp.com',\n    databaseURL: 'https://iot-stone-default-rtdb.asia-southeast1.firebasedatabase.app',\n    projectId: 'iot-stone',\n    storageBucket: 'iot-stone.appspot.com',\n    messagingSenderId: '934817472997',\n    appId: '1:934817472997:web:846440d1e9de6c960ecf0c',\n};\nexport const app = initializeApp(firebaseConfig);\nexport const database = getDatabase(app);\n","import { noop, safe_not_equal, subscribe, run_all, is_function } from '../internal/index.mjs';\nexport { get_store_value as get } from '../internal/index.mjs';\n\nconst subscriber_queue = [];\n/**\n * Creates a `Readable` store that allows reading by subscription.\n * @param value initial value\n * @param {StartStopNotifier}start start and stop notifications for subscriptions\n */\nfunction readable(value, start) {\n    return {\n        subscribe: writable(value, start).subscribe\n    };\n}\n/**\n * Create a `Writable` store that allows both updating and reading by subscription.\n * @param {*=}value initial value\n * @param {StartStopNotifier=}start start and stop notifications for subscriptions\n */\nfunction writable(value, start = noop) {\n    let stop;\n    const subscribers = new Set();\n    function set(new_value) {\n        if (safe_not_equal(value, new_value)) {\n            value = new_value;\n            if (stop) { // store is ready\n                const run_queue = !subscriber_queue.length;\n                for (const subscriber of subscribers) {\n                    subscriber[1]();\n                    subscriber_queue.push(subscriber, value);\n                }\n                if (run_queue) {\n                    for (let i = 0; i < subscriber_queue.length; i += 2) {\n                        subscriber_queue[i][0](subscriber_queue[i + 1]);\n                    }\n                    subscriber_queue.length = 0;\n                }\n            }\n        }\n    }\n    function update(fn) {\n        set(fn(value));\n    }\n    function subscribe(run, invalidate = noop) {\n        const subscriber = [run, invalidate];\n        subscribers.add(subscriber);\n        if (subscribers.size === 1) {\n            stop = start(set) || noop;\n        }\n        run(value);\n        return () => {\n            subscribers.delete(subscriber);\n            if (subscribers.size === 0) {\n                stop();\n                stop = null;\n            }\n        };\n    }\n    return { set, update, subscribe };\n}\nfunction derived(stores, fn, initial_value) {\n    const single = !Array.isArray(stores);\n    const stores_array = single\n        ? [stores]\n        : stores;\n    const auto = fn.length < 2;\n    return readable(initial_value, (set) => {\n        let inited = false;\n        const values = [];\n        let pending = 0;\n        let cleanup = noop;\n        const sync = () => {\n            if (pending) {\n                return;\n            }\n            cleanup();\n            const result = fn(single ? values[0] : values, set);\n            if (auto) {\n                set(result);\n            }\n            else {\n                cleanup = is_function(result) ? result : noop;\n            }\n        };\n        const unsubscribers = stores_array.map((store, i) => subscribe(store, (value) => {\n            values[i] = value;\n            pending &= ~(1 << i);\n            if (inited) {\n                sync();\n            }\n        }, () => {\n            pending |= (1 << i);\n        }));\n        inited = true;\n        sync();\n        return function stop() {\n            run_all(unsubscribers);\n            cleanup();\n        };\n    });\n}\n\nexport { derived, readable, writable };\n","import { onValue, ref } from '@firebase/database';\nimport dayjs from 'dayjs';\nimport duration from 'dayjs/plugin/duration';\nimport { database } from '../libs/firebase';\nimport { derived, writable } from 'svelte/store';\ndayjs.extend(duration);\nexport const useRealtimeDB = () => {\n    const state = writable(null);\n    const elapsedTime = derived(state, ($s) => ($s === null || $s === void 0 ? void 0 : $s.elapsedTime) || 0);\n    const formatTime = (second) => {\n        return dayjs.duration(second, 's').format('Y年Mヶ月D日 \\n HH:mm:ss');\n    };\n    const elapsedTimeString = derived(elapsedTime, ($elapsedTime) => {\n        return formatTime(Math.floor($elapsedTime / 1000));\n    });\n    const percentage = derived(elapsedTime, ($elapsedTime) => {\n        const goalTime = 3 * 365 * 24 * 60 * 60 * 1000;\n        return $elapsedTime / goalTime * 100;\n    });\n    const isPressuring = derived(state, ($s) => $s === null || $s === void 0 ? void 0 : $s.isPressuring);\n    const updateState = (res) => {\n        state.set(res);\n    };\n    const subscribeState = () => {\n        const stateRef = ref(database, 'state');\n        onValue(stateRef, (snapshot) => {\n            const res = snapshot.val();\n            updateState(res);\n        });\n    };\n    return {\n        elapsedTime,\n        isPressuring,\n        subscribeState,\n        elapsedTimeString,\n        percentage,\n    };\n};\n","/*! *****************************************************************************\r\nCopyright (c) Microsoft Corporation.\r\n\r\nPermission to use, copy, modify, and/or distribute this software for any\r\npurpose with or without fee is hereby granted.\r\n\r\nTHE SOFTWARE IS PROVIDED \"AS IS\" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH\r\nREGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY\r\nAND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n\r\nvar __assign = function() {\r\n    __assign = Object.assign || function __assign(t) {\r\n        for (var s, i = 1, n = arguments.length; i < n; i++) {\r\n            s = arguments[i];\r\n            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];\r\n        }\r\n        return t;\r\n    };\r\n    return __assign.apply(this, arguments);\r\n};\n\nvar Console = /** @class */ (function () {\n    function Console() {\n    }\n    Console.log = function () {\n        var message = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            message[_i] = arguments[_i];\n        }\n        // eslint-disable-next-line no-console\n        console.log.apply(console, message);\n    };\n    Console.error = function () {\n        var message = [];\n        for (var _i = 0; _i < arguments.length; _i++) {\n            message[_i] = arguments[_i];\n        }\n        // eslint-disable-next-line no-console\n        console.error.apply(console, message);\n    };\n    Console.time = function (label) {\n        // eslint-disable-next-line no-console\n        console.time(label);\n    };\n    Console.timeEnd = function (label) {\n        // eslint-disable-next-line no-console\n        console.timeEnd(label);\n    };\n    return Console;\n}());\n\nvar sky = {\n    50: '#f0f9ff',\n    100: '#e0f2fe',\n    200: '#bae6fd',\n    300: '#7dd3fc',\n    400: '#38bdf8',\n    500: '#0ea5e9',\n    600: '#0284c7',\n    700: '#0369a1',\n    800: '#075985',\n    900: '#0c4a6e',\n};\nvar warned = false;\nvar colors = {\n    black: '#000',\n    white: '#fff',\n    rose: {\n        50: '#fff1f2',\n        100: '#ffe4e6',\n        200: '#fecdd3',\n        300: '#fda4af',\n        400: '#fb7185',\n        500: '#f43f5e',\n        600: '#e11d48',\n        700: '#be123c',\n        800: '#9f1239',\n        900: '#881337',\n    },\n    pink: {\n        50: '#fdf2f8',\n        100: '#fce7f3',\n        200: '#fbcfe8',\n        300: '#f9a8d4',\n        400: '#f472b6',\n        500: '#ec4899',\n        600: '#db2777',\n        700: '#be185d',\n        800: '#9d174d',\n        900: '#831843',\n    },\n    fuchsia: {\n        50: '#fdf4ff',\n        100: '#fae8ff',\n        200: '#f5d0fe',\n        300: '#f0abfc',\n        400: '#e879f9',\n        500: '#d946ef',\n        600: '#c026d3',\n        700: '#a21caf',\n        800: '#86198f',\n        900: '#701a75',\n    },\n    purple: {\n        50: '#faf5ff',\n        100: '#f3e8ff',\n        200: '#e9d5ff',\n        300: '#d8b4fe',\n        400: '#c084fc',\n        500: '#a855f7',\n        600: '#9333ea',\n        700: '#7e22ce',\n        800: '#6b21a8',\n        900: '#581c87',\n    },\n    violet: {\n        50: '#f5f3ff',\n        100: '#ede9fe',\n        200: '#ddd6fe',\n        300: '#c4b5fd',\n        400: '#a78bfa',\n        500: '#8b5cf6',\n        600: '#7c3aed',\n        700: '#6d28d9',\n        800: '#5b21b6',\n        900: '#4c1d95',\n    },\n    indigo: {\n        50: '#eef2ff',\n        100: '#e0e7ff',\n        200: '#c7d2fe',\n        300: '#a5b4fc',\n        400: '#818cf8',\n        500: '#6366f1',\n        600: '#4f46e5',\n        700: '#4338ca',\n        800: '#3730a3',\n        900: '#312e81',\n    },\n    blue: {\n        50: '#eff6ff',\n        100: '#dbeafe',\n        200: '#bfdbfe',\n        300: '#93c5fd',\n        400: '#60a5fa',\n        500: '#3b82f6',\n        600: '#2563eb',\n        700: '#1d4ed8',\n        800: '#1e40af',\n        900: '#1e3a8a',\n    },\n    sky: sky,\n    get lightBlue() {\n        if (!warned) {\n            Console.log('warn - `lightBlue` has been renamed to `sky`.');\n            Console.log('warn - Please update your color palette to eliminate this warning.');\n            warned = true;\n        }\n        return sky;\n    },\n    cyan: {\n        50: '#ecfeff',\n        100: '#cffafe',\n        200: '#a5f3fc',\n        300: '#67e8f9',\n        400: '#22d3ee',\n        500: '#06b6d4',\n        600: '#0891b2',\n        700: '#0e7490',\n        800: '#155e75',\n        900: '#164e63',\n    },\n    teal: {\n        50: '#f0fdfa',\n        100: '#ccfbf1',\n        200: '#99f6e4',\n        300: '#5eead4',\n        400: '#2dd4bf',\n        500: '#14b8a6',\n        600: '#0d9488',\n        700: '#0f766e',\n        800: '#115e59',\n        900: '#134e4a',\n    },\n    emerald: {\n        50: '#ecfdf5',\n        100: '#d1fae5',\n        200: '#a7f3d0',\n        300: '#6ee7b7',\n        400: '#34d399',\n        500: '#10b981',\n        600: '#059669',\n        700: '#047857',\n        800: '#065f46',\n        900: '#064e3b',\n    },\n    green: {\n        50: '#f0fdf4',\n        100: '#dcfce7',\n        200: '#bbf7d0',\n        300: '#86efac',\n        400: '#4ade80',\n        500: '#22c55e',\n        600: '#16a34a',\n        700: '#15803d',\n        800: '#166534',\n        900: '#14532d',\n    },\n    lime: {\n        50: '#f7fee7',\n        100: '#ecfccb',\n        200: '#d9f99d',\n        300: '#bef264',\n        400: '#a3e635',\n        500: '#84cc16',\n        600: '#65a30d',\n        700: '#4d7c0f',\n        800: '#3f6212',\n        900: '#365314',\n    },\n    yellow: {\n        50: '#fefce8',\n        100: '#fef9c3',\n        200: '#fef08a',\n        300: '#fde047',\n        400: '#facc15',\n        500: '#eab308',\n        600: '#ca8a04',\n        700: '#a16207',\n        800: '#854d0e',\n        900: '#713f12',\n    },\n    amber: {\n        50: '#fffbeb',\n        100: '#fef3c7',\n        200: '#fde68a',\n        300: '#fcd34d',\n        400: '#fbbf24',\n        500: '#f59e0b',\n        600: '#d97706',\n        700: '#b45309',\n        800: '#92400e',\n        900: '#78350f',\n    },\n    orange: {\n        50: '#fff7ed',\n        100: '#ffedd5',\n        200: '#fed7aa',\n        300: '#fdba74',\n        400: '#fb923c',\n        500: '#f97316',\n        600: '#ea580c',\n        700: '#c2410c',\n        800: '#9a3412',\n        900: '#7c2d12',\n    },\n    red: {\n        50: '#fef2f2',\n        100: '#fee2e2',\n        200: '#fecaca',\n        300: '#fca5a5',\n        400: '#f87171',\n        500: '#ef4444',\n        600: '#dc2626',\n        700: '#b91c1c',\n        800: '#991b1b',\n        900: '#7f1d1d',\n    },\n    warmGray: {\n        50: '#fafaf9',\n        100: '#f5f5f4',\n        200: '#e7e5e4',\n        300: '#d6d3d1',\n        400: '#a8a29e',\n        500: '#78716c',\n        600: '#57534e',\n        700: '#44403c',\n        800: '#292524',\n        900: '#1c1917',\n    },\n    trueGray: {\n        50: '#fafafa',\n        100: '#f5f5f5',\n        200: '#e5e5e5',\n        300: '#d4d4d4',\n        400: '#a3a3a3',\n        500: '#737373',\n        600: '#525252',\n        700: '#404040',\n        800: '#262626',\n        900: '#171717',\n    },\n    gray: {\n        50: '#fafafa',\n        100: '#f4f4f5',\n        200: '#e4e4e7',\n        300: '#d4d4d8',\n        400: '#a1a1aa',\n        500: '#71717a',\n        600: '#52525b',\n        700: '#3f3f46',\n        800: '#27272a',\n        900: '#18181b',\n    },\n    coolGray: {\n        50: '#f9fafb',\n        100: '#f3f4f6',\n        200: '#e5e7eb',\n        300: '#d1d5db',\n        400: '#9ca3af',\n        500: '#6b7280',\n        600: '#4b5563',\n        700: '#374151',\n        800: '#1f2937',\n        900: '#111827',\n    },\n    blueGray: {\n        50: '#f8fafc',\n        100: '#f1f5f9',\n        200: '#e2e8f0',\n        300: '#cbd5e1',\n        400: '#94a3b8',\n        500: '#64748b',\n        600: '#475569',\n        700: '#334155',\n        800: '#1e293b',\n        900: '#0f172a',\n    },\n    light: {\n        50: '#fdfdfd',\n        100: '#fcfcfc',\n        200: '#fafafa',\n        300: '#f8f9fa',\n        400: '#f6f6f6',\n        500: '#f2f2f2',\n        600: '#f1f3f5',\n        700: '#e9ecef',\n        800: '#dee2e6',\n        900: '#dde1e3',\n    },\n    dark: {\n        50: '#4a4a4a',\n        100: '#3c3c3c',\n        200: '#323232',\n        300: '#2d2d2d',\n        400: '#222222',\n        500: '#1f1f1f',\n        600: '#1c1c1e',\n        700: '#1b1b1b',\n        800: '#181818',\n        900: '#0f0f0f',\n    },\n};\n\nvar keyframes = {\n    spin: {\n        from: {\n            transform: 'rotate(0deg)',\n        },\n        to: {\n            transform: 'rotate(360deg)',\n        },\n    },\n    ping: {\n        '0%': {\n            transform: 'scale(1)',\n            opacity: '1',\n        },\n        '75%, 100%': {\n            transform: 'scale(2)',\n            opacity: '0',\n        },\n    },\n    pulse: {\n        '0%, 100%': {\n            opacity: '1',\n        },\n        '50%': {\n            opacity: '.5',\n        },\n    },\n    bounce: {\n        '0%, 100%': {\n            transform: 'translateY(-25%)',\n            animationTimingFunction: 'cubic-bezier(0.8,0,1,1)',\n        },\n        '50%': {\n            transform: 'translateY(0)',\n            animationTimingFunction: 'cubic-bezier(0,0,0.2,1)',\n        },\n    },\n    shock: {\n        'from, 20%, 53%, 80%, to': {\n            animationTimingFunction: 'cubic-bezier(0.215, 0.61, 0.355, 1)',\n            transform: 'translate3d(0, 0, 0)',\n        },\n        '40%, 43%': {\n            animationTimingFunction: 'cubic-bezier(0.755, 0.05, 0.855, 0.06)',\n            transform: 'translate3d(0, -30px, 0)',\n        },\n        '70%': {\n            animationTimingFunction: 'cubic-bezier(0.755, 0.05, 0.855, 0.06)',\n            transform: 'translate3d(0, -15px, 0)',\n        },\n        '90%': {\n            transform: 'translate3d(0, -4px, 0)',\n        },\n    },\n    flash: {\n        'from, 50%, to': {\n            opacity: '1',\n        },\n        '25%, 75%': {\n            opacity: '0',\n        },\n    },\n    bubble: {\n        'from': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n        '50%': {\n            transform: 'scale3d(1.05, 1.05, 1.05)',\n        },\n        'to': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n    },\n    rubberBand: {\n        'from': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n        '30%': {\n            transform: 'scale3d(1.25, 0.75, 1)',\n        },\n        '40%': {\n            transform: 'scale3d(0.75, 1.25, 1)',\n        },\n        '50%': {\n            transform: 'scale3d(1.15, 0.85, 1)',\n        },\n        '65%': {\n            transform: 'scale3d(0.95, 1.05, 1)',\n        },\n        '75%': {\n            transform: 'scale3d(1.05, 0.95, 1)',\n        },\n        'to': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n    },\n    shakeX: {\n        'from, to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        '10%, 30%, 50%, 70%, 90%': {\n            transform: 'translate3d(-10px, 0, 0)',\n        },\n        '20%, 40%, 60%, 80%': {\n            transform: 'translate3d(10px, 0, 0)',\n        },\n    },\n    shakeY: {\n        'from, to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        '10%, 30%, 50%, 70%, 90%': {\n            transform: 'translate3d(0, -10px, 0)',\n        },\n        '20%, 40%, 60%, 80%': {\n            transform: 'translate3d(0, 10px, 0)',\n        },\n    },\n    headShake: {\n        '0%': {\n            transform: 'translateX(0)',\n        },\n        '6.5%': {\n            transform: 'translateX(-6px) rotateY(-9deg)',\n        },\n        '18.5%': {\n            transform: 'translateX(5px) rotateY(7deg)',\n        },\n        '31.5%': {\n            transform: 'translateX(-3px) rotateY(-5deg)',\n        },\n        '43.5%': {\n            transform: 'translateX(2px) rotateY(3deg)',\n        },\n        '50%': {\n            transform: 'translateX(0)',\n        },\n    },\n    swing: {\n        '20%': {\n            transform: 'rotate3d(0, 0, 1, 15deg)',\n        },\n        '40%': {\n            transform: 'rotate3d(0, 0, 1, -10deg)',\n        },\n        '60%': {\n            transform: 'rotate3d(0, 0, 1, 5deg)',\n        },\n        '80%': {\n            transform: 'rotate3d(0, 0, 1, -5deg)',\n        },\n        'to': {\n            transform: 'rotate3d(0, 0, 1, 0deg)',\n        },\n    },\n    tada: {\n        'from': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n        '10%, 20%': {\n            transform: 'scale3d(0.9, 0.9, 0.9) rotate3d(0, 0, 1, -3deg)',\n        },\n        '30%, 50%, 70%, 90%': {\n            transform: 'scale3d(1.1, 1.1, 1.1) rotate3d(0, 0, 1, 3deg)',\n        },\n        '40%, 60%, 80%': {\n            transform: 'scale3d(1.1, 1.1, 1.1) rotate3d(0, 0, 1, -3deg)',\n        },\n        'to': {\n            transform: 'scale3d(1, 1, 1)',\n        },\n    },\n    wobble: {\n        'from': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        '15%': {\n            transform: 'translate3d(-25%, 0, 0) rotate3d(0, 0, 1, -5deg)',\n        },\n        '30%': {\n            transform: 'translate3d(20%, 0, 0) rotate3d(0, 0, 1, 3deg)',\n        },\n        '45%': {\n            transform: 'translate3d(-15%, 0, 0) rotate3d(0, 0, 1, -3deg)',\n        },\n        '60%': {\n            transform: 'translate3d(10%, 0, 0) rotate3d(0, 0, 1, 2deg)',\n        },\n        '75%': {\n            transform: 'translate3d(-5%, 0, 0) rotate3d(0, 0, 1, -1deg)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    jello: {\n        'from, 11.1% to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        '22.2%': {\n            transform: 'skewX(-12.5deg) skewY(-12.5deg)',\n        },\n        '33.3%': {\n            transform: 'skewX(6.25deg) skewY(6.25deg)',\n        },\n        '44.4%': {\n            transform: 'skewX(-3.125deg) skewY(-3.125deg)',\n        },\n        '55.5%': {\n            transform: 'skewX(1.5625deg) skewY(1.5625deg)',\n        },\n        '66.6%': {\n            transform: 'skewX(-0.78125deg) skewY(-0.78125deg)',\n        },\n        '77.7%': {\n            transform: 'skewX(0.390625deg) skewY(0.390625deg)',\n        },\n        '88.8%': {\n            transform: 'skewX(-0.1953125deg) skewY(-0.1953125deg)',\n        },\n    },\n    heartBeat: {\n        '0%': {\n            transform: 'scale(1)',\n        },\n        '14%': {\n            transform: 'scale(1.3)',\n        },\n        '28%': {\n            transform: 'scale(1)',\n        },\n        '42%': {\n            transform: 'scale(1.3)',\n        },\n        '70%': {\n            transform: 'scale(1)',\n        },\n    },\n    hinge: {\n        '0%': {\n            transformOrigin: 'top left',\n            animationTimingFunction: 'ease-in-out',\n        },\n        '20%, 60%': {\n            transform: 'rotate3d(0, 0, 1, 80deg)',\n            transformOrigin: 'top left',\n            animationTimingFunction: 'ease-in-out',\n        },\n        '40%, 80%': {\n            transform: 'rotate3d(0, 0, 1, 60deg)',\n            transformOrigin: 'top left',\n            animationTimingFunction: 'ease-in-out',\n        },\n        'to': {\n            transform: 'translate3d(0, 700px, 0)',\n            opacity: '0',\n        },\n    },\n    jackInTheBox: {\n        'from': {\n            opacity: '0',\n            transformOrigin: 'center bottom',\n            transform: 'scale(0.1) rotate(30deg)',\n        },\n        '50%': {\n            transform: 'rotate(-10deg)',\n        },\n        '70%': {\n            transform: 'rotate(3deg)',\n        },\n        'to': {\n            transform: 'scale(1)',\n        },\n    },\n    // light speed\n    lightSpeedInRight: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0) skewX(-30deg)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'skewX(20deg)',\n        },\n        '80%': {\n            transform: 'skewX(-5deg)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    lightSpeedInLeft: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0) skewX(-30deg)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'skewX(20deg)',\n        },\n        '80%': {\n            transform: 'skewX(-5deg)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    lightSpeedOutLeft: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0) skewX(30deg)',\n        },\n    },\n    lightSpeedOutRight: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0) skewX(30deg)',\n        },\n    },\n    // flip\n    flip: {\n        'from': {\n            transform: 'perspective(400px) scale3d(1, 1, 1) translate3d(0, 0, 0) rotate3d(0, 1, 0, -360deg)',\n            animationTimingFunction: 'ease-out',\n        },\n        '40%': {\n            transform: 'perspective(400px) scale3d(1, 1, 1) translate3d(0, 0, 150px) rotate3d(0, 1, 0, -190deg)',\n            animationTimingFunction: 'ease-out',\n        },\n        '50%': {\n            transform: 'perspective(400px) scale3d(1, 1, 1) translate3d(0, 0, 150px) rotate3d(0, 1, 0, -170deg)',\n            animationTimingFunction: 'ease-in',\n        },\n        '80%': {\n            transform: 'perspective(400px) scale3d(0.95, 0.95, 0.95) translate3d(0, 0, 0) rotate3d(0, 1, 0, 0deg)',\n            animationTimingFunction: 'ease-in',\n        },\n        'to': {\n            transform: 'perspective(400px) scale3d(1, 1, 1) translate3d(0, 0, 0) rotate3d(0, 1, 0, 0deg)',\n            animationTimingFunction: 'ease-in',\n        },\n    },\n    flipInX: {\n        'from': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, 90deg)',\n            animationTimingFunction: 'ease-in',\n            opacity: '0',\n        },\n        '40%': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, -20deg)',\n            animationTimingFunction: 'ease-in',\n        },\n        '60%': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, 10deg)',\n            opacity: '1',\n        },\n        '80%': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, -5deg)',\n        },\n        'to': {\n            transform: 'perspective(400px)',\n        },\n    },\n    flipInY: {\n        'from': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, 90deg)',\n            animationTimingFunction: 'ease-in',\n            opacity: '0',\n        },\n        '40%': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, -20deg)',\n            animationTimingFunction: 'ease-in',\n        },\n        '60%': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, 10deg)',\n            opacity: '1',\n        },\n        '80%': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, -5deg)',\n        },\n        'to': {\n            transform: 'perspective(400px)',\n        },\n    },\n    flipOutX: {\n        'from': {\n            transform: 'perspective(400px)',\n        },\n        '30%': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, -20deg)',\n            opacity: '1',\n        },\n        'to': {\n            transform: 'perspective(400px) rotate3d(1, 0, 0, 90deg)',\n            opacity: '0',\n        },\n    },\n    flipOutY: {\n        'from': {\n            transform: 'perspective(400px)',\n        },\n        '30%': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, -15deg)',\n            opacity: '1',\n        },\n        'to': {\n            transform: 'perspective(400px) rotate3d(0, 1, 0, 90deg)',\n            opacity: '0',\n        },\n    },\n    // rotate in\n    rotateIn: {\n        'from': {\n            transformOrigin: 'center',\n            transform: 'rotate3d(0, 0, 1, -200deg)',\n            opacity: '0',\n        },\n        'to': {\n            transformOrigin: 'center',\n            transform: 'translate3d(0, 0, 0)',\n            opacity: '1',\n        },\n    },\n    rotateInDownLeft: {\n        'from': {\n            transformOrigin: 'left bottom',\n            transform: 'rotate3d(0, 0, 1, -45deg)',\n            opacity: '0',\n        },\n        'to': {\n            transformOrigin: 'left bottom',\n            transform: 'translate3d(0, 0, 0)',\n            opacity: '1',\n        },\n    },\n    rotateInDownRight: {\n        'from': {\n            transformOrigin: 'right bottom',\n            transform: 'rotate3d(0, 0, 1, 45deg)',\n            opacity: '0',\n        },\n        'to': {\n            transformOrigin: 'right bottom',\n            transform: 'translate3d(0, 0, 0)',\n            opacity: '1',\n        },\n    },\n    rotateInUpLeft: {\n        'from': {\n            transformOrigin: 'left top',\n            transform: 'rotate3d(0, 0, 1, 45deg)',\n            opacity: '0',\n        },\n        'to': {\n            transformOrigin: 'left top',\n            transform: 'translate3d(0, 0, 0)',\n            opacity: '1',\n        },\n    },\n    rotateInUpRight: {\n        'from': {\n            transformOrigin: 'right bottom',\n            transform: 'rotate3d(0, 0, 1, -90deg)',\n            opacity: '0',\n        },\n        'to': {\n            transformOrigin: 'right bottom',\n            transform: 'translate3d(0, 0, 0)',\n            opacity: '1',\n        },\n    },\n    rotateOut: {\n        'from': {\n            transformOrigin: 'center',\n            opacity: '1',\n        },\n        'to': {\n            transformOrigin: 'center',\n            transform: 'rotate3d(0, 0, 1, 200deg)',\n            opacity: '0',\n        },\n    },\n    rotateOutDownLeft: {\n        'from': {\n            transformOrigin: 'left bottom',\n            opacity: '1',\n        },\n        'to': {\n            transformOrigin: 'left bottom',\n            transform: 'rotate3d(0, 0, 1, 45deg)',\n            opacity: '0',\n        },\n    },\n    rotateOutDownRight: {\n        'from': {\n            transformOrigin: 'right bottom',\n            opacity: '1',\n        },\n        'to': {\n            transformOrigin: 'right bottom',\n            transform: 'rotate3d(0, 0, 1, -45deg)',\n            opacity: '0',\n        },\n    },\n    rotateOutUpLeft: {\n        'from': {\n            transformOrigin: 'left bottom',\n            opacity: '1',\n        },\n        'to': {\n            transformOrigin: 'left bottom',\n            transform: 'rotate3d(0, 0, 1, -45deg)',\n            opacity: '0',\n        },\n    },\n    rotateOutUpRight: {\n        'from': {\n            transformOrigin: 'right bottom',\n            opacity: '1',\n        },\n        'to': {\n            transformOrigin: 'left bottom',\n            transform: 'rotate3d(0, 0, 1, 90deg)',\n            opacity: '0',\n        },\n    },\n    // roll\n    rollIn: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(-100%, 0, 0) rotate3d(0, 0, 1, -120deg)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    rollOut: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0) rotate3d(0, 0, 1, 120deg)',\n        },\n    },\n    // zoom in\n    zoomIn: {\n        'from': {\n            opacity: '0',\n            transform: 'scale3d(0.3, 0.3, 0.3)',\n        },\n        '50%': {\n            opacity: '1',\n        },\n    },\n    zoomInDown: {\n        'from': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(0, -1000px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(0, 60px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    zoomInLeft: {\n        'from': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(-1000px, 0, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(10px, 0, 0)',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    zoomInRight: {\n        'from': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(1000px, 0, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(-10px, 0, 0)',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    zoomInUp: {\n        'from': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(0, 1000px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(0, -60px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    // bounce in\n    bounceIn: {\n        'from, 20%, 40%, 60%, 80%, to': {\n            animationTimingFunction: 'ease-in-out',\n        },\n        '0%': {\n            opacity: '0',\n            transform: 'scale3d(0.3, 0.3, 0.3)',\n        },\n        '20%': {\n            transform: 'scale3d(1.1, 1.1, 1.1)',\n        },\n        '40%': {\n            transform: 'scale3d(0.9, 0.9, 0.9)',\n        },\n        '60%': {\n            transform: 'scale3d(1.03, 1.03, 1.03)',\n            opacity: '1',\n        },\n        '80%': {\n            transform: 'scale3d(0.97, 0.97, 0.97)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'scale3d(1, 1, 1)',\n        },\n    },\n    bounceInDown: {\n        'from, 60%, 75%, 90%, to': {\n            animationTimingFunction: 'cubic-bezier(0.215, 0.61, 0.355, 1)',\n        },\n        '0%': {\n            opacity: '0',\n            transform: 'translate3d(0, -3000px, 0)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'translate3d(0, 25px, 0)',\n        },\n        '75%': {\n            transform: 'translate3d(0, -10px, 0)',\n        },\n        '90%': {\n            transform: 'translate3d(0, 5px, 0)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    bounceInLeft: {\n        'from, 60%, 75%, 90%, to': {\n            animationTimingFunction: 'cubic-bezier(0.215, 0.61, 0.355, 1)',\n        },\n        '0%': {\n            opacity: '0',\n            transform: 'translate3d(-3000px, 0, 0)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'translate3d(25px, 0, 0)',\n        },\n        '75%': {\n            transform: 'translate3d(-10px, 0, 0)',\n        },\n        '90%': {\n            transform: 'translate3d(5px, 0, 0)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    bounceInRight: {\n        'from, 60%, 75%, 90%, to': {\n            animationTimingFunction: 'cubic-bezier(0.215, 0.61, 0.355, 1)',\n        },\n        '0%': {\n            opacity: '0',\n            transform: 'translate3d(3000px, 0, 0)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'translate3d(-25px, 0, 0)',\n        },\n        '75%': {\n            transform: 'translate3d(10px, 0, 0)',\n        },\n        '90%': {\n            transform: 'translate3d(-5px, 0, 0)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    bounceInUp: {\n        'from, 60%, 75%, 90%, to': {\n            animationTimingFunction: 'cubic-bezier(0.215, 0.61, 0.355, 1)',\n        },\n        '0%': {\n            opacity: '0',\n            transform: 'translate3d(0, 3000px, 0)',\n        },\n        '60%': {\n            opacity: '1',\n            transform: 'translate3d(0, -20px, 0)',\n        },\n        '75%': {\n            transform: 'translate3d(0, 10px, 0)',\n        },\n        '90%': {\n            transform: 'translate3d(0, -5px, 0)',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    // bounce out\n    bounceOut: {\n        '20%': {\n            transform: 'scale3d(0.9, 0.9, 0.9)',\n        },\n        '50%, 55%': {\n            opacity: '1',\n            transform: 'scale3d(1.1, 1.1, 1.1)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'scale3d(0.3, 0.3, 0.3)',\n        },\n    },\n    bounceOutDown: {\n        '20%': {\n            transform: 'translate3d(0, 10px, 0)',\n        },\n        '40%, 45%': {\n            opacity: '1',\n            transform: 'translate3d(0, -20px, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, 2000px, 0)',\n        },\n    },\n    bounceOutLeft: {\n        '20%': {\n            opacity: '1',\n            transform: 'translate3d(20px, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(-2000px, 0, 0)',\n        },\n    },\n    bounceOutRight: {\n        '20%': {\n            opacity: '1',\n            transform: 'translate3d(-20px, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(2000px, 0, 0)',\n        },\n    },\n    bounceOutUp: {\n        '20%': {\n            transform: 'translate3d(0, -10px, 0)',\n        },\n        '40%, 45%': {\n            opacity: '1',\n            transform: 'translate3d(0, 20px, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, -2000px, 0)',\n        },\n    },\n    // zoom out\n    zoomOut: {\n        'from': {\n            opacity: '1',\n        },\n        '50%': {\n            opacity: '0',\n            transform: 'scale3d(0.3, 0.3, 0.3)',\n        },\n        'to': {\n            opacity: '0',\n        },\n    },\n    zoomOutDown: {\n        '40%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(0, -60px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(0, 2000px, 0)',\n            transformOrigin: 'center bottom',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    zoomOutLeft: {\n        '40%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(42px, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'scale(0.1) translate3d(-2000px, 0, 0)',\n            transformOrigin: 'left center',\n        },\n    },\n    zoomOutRight: {\n        '40%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(-42px, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'scale(0.1) translate3d(2000px, 0, 0)',\n            transformOrigin: 'right center',\n        },\n    },\n    zoomOutUp: {\n        '40%': {\n            opacity: '1',\n            transform: 'scale3d(0.475, 0.475, 0.475) translate3d(0, 60px, 0)',\n            animationTimingFunction: 'cubic-bezier(0.55, 0.055, 0.675, 0.19)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'scale3d(0.1, 0.1, 0.1) translate3d(0, -2000px, 0)',\n            transformOrigin: 'center bottom',\n            animationTimingFunction: 'cubic-bezier(0.175, 0.885, 0.32, 1)',\n        },\n    },\n    // slide in\n    slideInDown: {\n        'from': {\n            transform: 'translate3d(0, -100%, 0)',\n            visibility: 'visible',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    slideInLeft: {\n        'from': {\n            transform: 'translate3d(-100%, 0, 0)',\n            visibility: 'visible',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    slideInRight: {\n        'from': {\n            transform: 'translate3d(100%, 0, 0)',\n            visibility: 'visible',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    slideInUp: {\n        'from': {\n            transform: 'translate3d(0, 100%, 0)',\n            visibility: 'visible',\n        },\n        'to': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    // slide out\n    slideOutDown: {\n        'from': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            visibility: 'hidden',\n            transform: 'translate3d(0, 100%, 0)',\n        },\n    },\n    slideOutLeft: {\n        'from': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            visibility: 'hidden',\n            transform: 'translate3d(-100%, 0, 0)',\n        },\n    },\n    slideOutRight: {\n        'from': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            visibility: 'hidden',\n            transform: 'translate3d(100%, 0, 0)',\n        },\n    },\n    slideOutUp: {\n        'from': {\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            visibility: 'hidden',\n            transform: 'translate3d(0, -100%, 0)',\n        },\n    },\n    // fade in\n    fadeIn: {\n        'from': {\n            opacity: '0',\n        },\n        'to': {\n            opacity: '1',\n        },\n    },\n    fadeInDown: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(0, -100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInDownBig: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(0, -2000px, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInLeft: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(-100%, 0, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInLeftBig: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(-2000px, 0, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInRight: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInRightBig: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(2000px, 0, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInUp: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(0, 100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInUpBig: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(0, 2000px, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInTopLeft: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(-100%, -100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInTopRight: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(100%, -100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInBottomLeft: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(-100%, 100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    fadeInBottomRight: {\n        'from': {\n            opacity: '0',\n            transform: 'translate3d(100%, 100%, 0)',\n        },\n        'to': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n    },\n    // fade out\n    fadeOut: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n        },\n    },\n    fadeOutDown: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, 100%, 0)',\n        },\n    },\n    fadeOutDownBig: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, 2000px, 0)',\n        },\n    },\n    fadeOutLeft: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(-100%, 0, 0)',\n        },\n    },\n    fadeOutLeftBig: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(-2000px, 0, 0)',\n        },\n    },\n    fadeOutRight: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, 0, 0)',\n        },\n    },\n    fadeOutRightBig: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(2000px, 0, 0)',\n        },\n    },\n    fadeOutUp: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, -100%, 0)',\n        },\n    },\n    fadeOutUpBig: {\n        'from': {\n            opacity: '1',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(0, -2000px, 0)',\n        },\n    },\n    fadeOutTopLeft: {\n        'from': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(-100%, -100%, 0)',\n        },\n    },\n    fadeOutTopRight: {\n        'from': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, -100%, 0)',\n        },\n    },\n    fadeOutBottomLeft: {\n        'from': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(-100%, 100%, 0)',\n        },\n    },\n    fadeOutBottomRight: {\n        'from': {\n            opacity: '1',\n            transform: 'translate3d(0, 0, 0)',\n        },\n        'to': {\n            opacity: '0',\n            transform: 'translate3d(100%, 100%, 0)',\n        },\n    },\n    // back in\n    backInUp: {\n        '0%': {\n            opacity: '0.7',\n            transform: 'translateY(1200px) scale(0.7)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n    },\n    backInDown: {\n        '0%': {\n            opacity: '0.7',\n            transform: 'translateY(-1200px) scale(0.7)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n    },\n    backInLeft: {\n        '0%': {\n            opacity: '0.7',\n            transform: 'translateX(-2000px) scale(0.7)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateX(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n    },\n    backInRight: {\n        '0%': {\n            opacity: '0.7',\n            transform: 'translateX(2000px) scale(0.7)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n    },\n    // back out\n    backOutUp: {\n        '0%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '0.7',\n            transform: 'translateY(-700px) scale(0.7)',\n        },\n    },\n    backOutDown: {\n        '0%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '0.7',\n            transform: 'translateY(700px) scale(0.7)',\n        },\n    },\n    backOutLeft: {\n        '0%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateX(-2000px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '0.7',\n            transform: 'translateY(-700px) scale(0.7)',\n        },\n    },\n    backOutRight: {\n        '0%': {\n            opacity: '1',\n            transform: 'scale(1)',\n        },\n        '80%': {\n            opacity: '0.7',\n            transform: 'translateY(0px) scale(0.7)',\n        },\n        '100%': {\n            opacity: '0.7',\n            transform: 'translateX(2000px) scale(0.7)',\n        },\n    },\n};\n\nvar variantOrder = [\n    'hover',\n    'focus',\n    'active',\n    'visited',\n    'link',\n    'target',\n    'focus-visible',\n    'focus-within',\n    'checked',\n    'not-checked',\n    'default',\n    'disabled',\n    'enabled',\n    'indeterminate',\n    'invalid',\n    'valid',\n    'optional',\n    'required',\n    'placeholder-shown',\n    'read-only',\n    'read-write',\n    'not-disabled',\n    'first-of-type',\n    'not-first-of-type',\n    'last-of-type',\n    'not-last-of-type',\n    'first',\n    'last',\n    'not-first',\n    'not-last',\n    'only-child',\n    'not-only-child',\n    'only-of-type',\n    'not-only-of-type',\n    'even',\n    'odd',\n    'even-of-type',\n    'odd-of-type',\n    'root',\n    'empty',\n    'before',\n    'after',\n    'first-letter',\n    'first-line',\n    'file-selector-button',\n    'selection',\n    'svg',\n    'all',\n    'children',\n    'siblings',\n    'sibling',\n    'ltr',\n    'rtl',\n    'group-hover',\n    'group-focus',\n    'group-active',\n    'group-visited',\n    'motion-safe',\n    'motion-reduce',\n];\nvar layerOrder;\n(function (layerOrder) {\n    layerOrder[layerOrder[\"base\"] = 10] = \"base\";\n    layerOrder[layerOrder[\"components\"] = 150] = \"components\";\n    layerOrder[layerOrder[\"shortcuts\"] = 160] = \"shortcuts\";\n    layerOrder[layerOrder[\"utilities\"] = 20000] = \"utilities\";\n})(layerOrder || (layerOrder = {}));\nvar pluginOrder;\n(function (pluginOrder) {\n    pluginOrder[pluginOrder[\"container\"] = 100] = \"container\";\n    pluginOrder[pluginOrder[\"space\"] = 200] = \"space\";\n    pluginOrder[pluginOrder[\"divideWidth\"] = 300] = \"divideWidth\";\n    pluginOrder[pluginOrder[\"divideColor\"] = 400] = \"divideColor\";\n    pluginOrder[pluginOrder[\"divideStyle\"] = 500] = \"divideStyle\";\n    pluginOrder[pluginOrder[\"divideOpacity\"] = 600] = \"divideOpacity\";\n    pluginOrder[pluginOrder[\"accessibility\"] = 700] = \"accessibility\";\n    pluginOrder[pluginOrder[\"appearance\"] = 800] = \"appearance\";\n    pluginOrder[pluginOrder[\"backgroundAttachment\"] = 900] = \"backgroundAttachment\";\n    pluginOrder[pluginOrder[\"backgroundClip\"] = 1000] = \"backgroundClip\";\n    pluginOrder[pluginOrder[\"backgroundColor\"] = 1100] = \"backgroundColor\";\n    pluginOrder[pluginOrder[\"backgroundImage\"] = 1200] = \"backgroundImage\";\n    pluginOrder[pluginOrder[\"gradientColorStops\"] = 1300] = \"gradientColorStops\";\n    pluginOrder[pluginOrder[\"backgroundOpacity\"] = 1400] = \"backgroundOpacity\";\n    pluginOrder[pluginOrder[\"backgroundPosition\"] = 1500] = \"backgroundPosition\";\n    pluginOrder[pluginOrder[\"backgroundRepeat\"] = 1600] = \"backgroundRepeat\";\n    pluginOrder[pluginOrder[\"backgroundSize\"] = 1700] = \"backgroundSize\";\n    pluginOrder[pluginOrder[\"backgroundOrigin\"] = 1750] = \"backgroundOrigin\";\n    pluginOrder[pluginOrder[\"borderCollapse\"] = 1800] = \"borderCollapse\";\n    pluginOrder[pluginOrder[\"borderColor\"] = 1900] = \"borderColor\";\n    pluginOrder[pluginOrder[\"borderOpacity\"] = 2000] = \"borderOpacity\";\n    pluginOrder[pluginOrder[\"borderRadius\"] = 2100] = \"borderRadius\";\n    pluginOrder[pluginOrder[\"borderStyle\"] = 2200] = \"borderStyle\";\n    pluginOrder[pluginOrder[\"borderWidth\"] = 2300] = \"borderWidth\";\n    pluginOrder[pluginOrder[\"boxDecorationBreak\"] = 2350] = \"boxDecorationBreak\";\n    pluginOrder[pluginOrder[\"boxSizing\"] = 2400] = \"boxSizing\";\n    pluginOrder[pluginOrder[\"cursor\"] = 2500] = \"cursor\";\n    pluginOrder[pluginOrder[\"captionSide\"] = 2550] = \"captionSide\";\n    pluginOrder[pluginOrder[\"emptyCells\"] = 2560] = \"emptyCells\";\n    pluginOrder[pluginOrder[\"display\"] = 2600] = \"display\";\n    pluginOrder[pluginOrder[\"flexDirection\"] = 2700] = \"flexDirection\";\n    pluginOrder[pluginOrder[\"flexWrap\"] = 2800] = \"flexWrap\";\n    pluginOrder[pluginOrder[\"placeItems\"] = 2900] = \"placeItems\";\n    pluginOrder[pluginOrder[\"placeContent\"] = 3000] = \"placeContent\";\n    pluginOrder[pluginOrder[\"placeSelf\"] = 3100] = \"placeSelf\";\n    pluginOrder[pluginOrder[\"alignItems\"] = 3200] = \"alignItems\";\n    pluginOrder[pluginOrder[\"alignContent\"] = 3300] = \"alignContent\";\n    pluginOrder[pluginOrder[\"alignSelf\"] = 3400] = \"alignSelf\";\n    pluginOrder[pluginOrder[\"justifyItems\"] = 3500] = \"justifyItems\";\n    pluginOrder[pluginOrder[\"justifyContent\"] = 3600] = \"justifyContent\";\n    pluginOrder[pluginOrder[\"justifySelf\"] = 3700] = \"justifySelf\";\n    pluginOrder[pluginOrder[\"flex\"] = 3800] = \"flex\";\n    pluginOrder[pluginOrder[\"flexGrow\"] = 3900] = \"flexGrow\";\n    pluginOrder[pluginOrder[\"flexShrink\"] = 4000] = \"flexShrink\";\n    pluginOrder[pluginOrder[\"order\"] = 4100] = \"order\";\n    pluginOrder[pluginOrder[\"float\"] = 4200] = \"float\";\n    pluginOrder[pluginOrder[\"clear\"] = 4300] = \"clear\";\n    pluginOrder[pluginOrder[\"fontFamily\"] = 4400] = \"fontFamily\";\n    pluginOrder[pluginOrder[\"fontWeight\"] = 4500] = \"fontWeight\";\n    pluginOrder[pluginOrder[\"height\"] = 4600] = \"height\";\n    pluginOrder[pluginOrder[\"fontSize\"] = 4700] = \"fontSize\";\n    pluginOrder[pluginOrder[\"lineHeight\"] = 4800] = \"lineHeight\";\n    pluginOrder[pluginOrder[\"listStylePosition\"] = 4900] = \"listStylePosition\";\n    pluginOrder[pluginOrder[\"listStyleType\"] = 5000] = \"listStyleType\";\n    pluginOrder[pluginOrder[\"margin\"] = 5100] = \"margin\";\n    pluginOrder[pluginOrder[\"maxHeight\"] = 5200] = \"maxHeight\";\n    pluginOrder[pluginOrder[\"maxWidth\"] = 5300] = \"maxWidth\";\n    pluginOrder[pluginOrder[\"minHeight\"] = 5400] = \"minHeight\";\n    pluginOrder[pluginOrder[\"minWidth\"] = 5500] = \"minWidth\";\n    pluginOrder[pluginOrder[\"objectFit\"] = 5600] = \"objectFit\";\n    pluginOrder[pluginOrder[\"objectPosition\"] = 5700] = \"objectPosition\";\n    pluginOrder[pluginOrder[\"opacity\"] = 5800] = \"opacity\";\n    pluginOrder[pluginOrder[\"outline\"] = 5900] = \"outline\";\n    pluginOrder[pluginOrder[\"overflow\"] = 6000] = \"overflow\";\n    pluginOrder[pluginOrder[\"overscrollBehavior\"] = 6100] = \"overscrollBehavior\";\n    pluginOrder[pluginOrder[\"padding\"] = 6200] = \"padding\";\n    pluginOrder[pluginOrder[\"placeholderColor\"] = 6300] = \"placeholderColor\";\n    pluginOrder[pluginOrder[\"placeholderOpacity\"] = 6400] = \"placeholderOpacity\";\n    pluginOrder[pluginOrder[\"caretColor\"] = 6450] = \"caretColor\";\n    pluginOrder[pluginOrder[\"caretOpacity\"] = 6460] = \"caretOpacity\";\n    pluginOrder[pluginOrder[\"tabSize\"] = 6470] = \"tabSize\";\n    pluginOrder[pluginOrder[\"pointerEvents\"] = 6500] = \"pointerEvents\";\n    pluginOrder[pluginOrder[\"position\"] = 6600] = \"position\";\n    pluginOrder[pluginOrder[\"inset\"] = 6700] = \"inset\";\n    pluginOrder[pluginOrder[\"resize\"] = 6800] = \"resize\";\n    pluginOrder[pluginOrder[\"boxShadow\"] = 6900] = \"boxShadow\";\n    pluginOrder[pluginOrder[\"boxShadowColor\"] = 6950] = \"boxShadowColor\";\n    pluginOrder[pluginOrder[\"ringWidth\"] = 7000] = \"ringWidth\";\n    pluginOrder[pluginOrder[\"ringOffsetColor\"] = 7100] = \"ringOffsetColor\";\n    pluginOrder[pluginOrder[\"ringOffsetWidth\"] = 7200] = \"ringOffsetWidth\";\n    pluginOrder[pluginOrder[\"ringColor\"] = 7300] = \"ringColor\";\n    pluginOrder[pluginOrder[\"ringOpacity\"] = 7400] = \"ringOpacity\";\n    pluginOrder[pluginOrder[\"fill\"] = 7500] = \"fill\";\n    pluginOrder[pluginOrder[\"stroke\"] = 7600] = \"stroke\";\n    pluginOrder[pluginOrder[\"strokeWidth\"] = 7700] = \"strokeWidth\";\n    pluginOrder[pluginOrder[\"strokeDashArray\"] = 7750] = \"strokeDashArray\";\n    pluginOrder[pluginOrder[\"strokeDashOffset\"] = 7760] = \"strokeDashOffset\";\n    pluginOrder[pluginOrder[\"tableLayout\"] = 7800] = \"tableLayout\";\n    pluginOrder[pluginOrder[\"textAlign\"] = 7900] = \"textAlign\";\n    pluginOrder[pluginOrder[\"textColor\"] = 8000] = \"textColor\";\n    pluginOrder[pluginOrder[\"textOpacity\"] = 8100] = \"textOpacity\";\n    pluginOrder[pluginOrder[\"textOverflow\"] = 8200] = \"textOverflow\";\n    pluginOrder[pluginOrder[\"textShadow\"] = 8250] = \"textShadow\";\n    pluginOrder[pluginOrder[\"fontStyle\"] = 8300] = \"fontStyle\";\n    pluginOrder[pluginOrder[\"textTransform\"] = 8400] = \"textTransform\";\n    pluginOrder[pluginOrder[\"textDecorationStyle\"] = 8450] = \"textDecorationStyle\";\n    pluginOrder[pluginOrder[\"textDecorationLength\"] = 8455] = \"textDecorationLength\";\n    pluginOrder[pluginOrder[\"textDecorationColor\"] = 8460] = \"textDecorationColor\";\n    pluginOrder[pluginOrder[\"textDecorationOpacity\"] = 8470] = \"textDecorationOpacity\";\n    pluginOrder[pluginOrder[\"textDecorationOffset\"] = 8480] = \"textDecorationOffset\";\n    pluginOrder[pluginOrder[\"textDecoration\"] = 8500] = \"textDecoration\";\n    pluginOrder[pluginOrder[\"textIndent\"] = 8550] = \"textIndent\";\n    pluginOrder[pluginOrder[\"textStrokeColor\"] = 8560] = \"textStrokeColor\";\n    pluginOrder[pluginOrder[\"textStrokeWidth\"] = 8570] = \"textStrokeWidth\";\n    pluginOrder[pluginOrder[\"content\"] = 8580] = \"content\";\n    pluginOrder[pluginOrder[\"fontSmoothing\"] = 8600] = \"fontSmoothing\";\n    pluginOrder[pluginOrder[\"fontVariantNumeric\"] = 8700] = \"fontVariantNumeric\";\n    pluginOrder[pluginOrder[\"letterSpacing\"] = 8800] = \"letterSpacing\";\n    pluginOrder[pluginOrder[\"userSelect\"] = 8900] = \"userSelect\";\n    pluginOrder[pluginOrder[\"verticalAlign\"] = 9000] = \"verticalAlign\";\n    pluginOrder[pluginOrder[\"visibility\"] = 9100] = \"visibility\";\n    pluginOrder[pluginOrder[\"backfaceVisibility\"] = 9150] = \"backfaceVisibility\";\n    pluginOrder[pluginOrder[\"whitespace\"] = 9200] = \"whitespace\";\n    pluginOrder[pluginOrder[\"wordBreak\"] = 9300] = \"wordBreak\";\n    pluginOrder[pluginOrder[\"writingMode\"] = 9340] = \"writingMode\";\n    pluginOrder[pluginOrder[\"hyphens\"] = 9350] = \"hyphens\";\n    pluginOrder[pluginOrder[\"width\"] = 9400] = \"width\";\n    pluginOrder[pluginOrder[\"zIndex\"] = 9500] = \"zIndex\";\n    pluginOrder[pluginOrder[\"isolation\"] = 9550] = \"isolation\";\n    pluginOrder[pluginOrder[\"gap\"] = 9600] = \"gap\";\n    pluginOrder[pluginOrder[\"gridAutoFlow\"] = 9700] = \"gridAutoFlow\";\n    pluginOrder[pluginOrder[\"gridTemplateColumns\"] = 9800] = \"gridTemplateColumns\";\n    pluginOrder[pluginOrder[\"gridAutoColumns\"] = 9900] = \"gridAutoColumns\";\n    pluginOrder[pluginOrder[\"gridColumn\"] = 10000] = \"gridColumn\";\n    pluginOrder[pluginOrder[\"gridColumnStart\"] = 10100] = \"gridColumnStart\";\n    pluginOrder[pluginOrder[\"gridColumnEnd\"] = 10200] = \"gridColumnEnd\";\n    pluginOrder[pluginOrder[\"gridTemplateRows\"] = 10300] = \"gridTemplateRows\";\n    pluginOrder[pluginOrder[\"gridAutoRows\"] = 10400] = \"gridAutoRows\";\n    pluginOrder[pluginOrder[\"gridRow\"] = 10500] = \"gridRow\";\n    pluginOrder[pluginOrder[\"gridRowStart\"] = 10600] = \"gridRowStart\";\n    pluginOrder[pluginOrder[\"gridRowEnd\"] = 10700] = \"gridRowEnd\";\n    pluginOrder[pluginOrder[\"transform\"] = 10800] = \"transform\";\n    pluginOrder[pluginOrder[\"transformOrigin\"] = 10900] = \"transformOrigin\";\n    pluginOrder[pluginOrder[\"scale\"] = 11000] = \"scale\";\n    pluginOrder[pluginOrder[\"rotate\"] = 11100] = \"rotate\";\n    pluginOrder[pluginOrder[\"translate\"] = 11200] = \"translate\";\n    pluginOrder[pluginOrder[\"skew\"] = 11300] = \"skew\";\n    pluginOrder[pluginOrder[\"perspective\"] = 11350] = \"perspective\";\n    pluginOrder[pluginOrder[\"perspectiveOrigin\"] = 11360] = \"perspectiveOrigin\";\n    pluginOrder[pluginOrder[\"transitionProperty\"] = 11400] = \"transitionProperty\";\n    pluginOrder[pluginOrder[\"transitionTimingFunction\"] = 11500] = \"transitionTimingFunction\";\n    pluginOrder[pluginOrder[\"transitionDuration\"] = 11600] = \"transitionDuration\";\n    pluginOrder[pluginOrder[\"transitionDelay\"] = 11700] = \"transitionDelay\";\n    pluginOrder[pluginOrder[\"keyframes\"] = 11800] = \"keyframes\";\n    pluginOrder[pluginOrder[\"animation\"] = 11900] = \"animation\";\n    pluginOrder[pluginOrder[\"imageRendering\"] = 11950] = \"imageRendering\";\n    pluginOrder[pluginOrder[\"mixBlendMode\"] = 12000] = \"mixBlendMode\";\n    pluginOrder[pluginOrder[\"backgroundBlendMode\"] = 12100] = \"backgroundBlendMode\";\n    pluginOrder[pluginOrder[\"filter\"] = 12200] = \"filter\";\n    pluginOrder[pluginOrder[\"blur\"] = 12300] = \"blur\";\n    pluginOrder[pluginOrder[\"brightness\"] = 12400] = \"brightness\";\n    pluginOrder[pluginOrder[\"contrast\"] = 12500] = \"contrast\";\n    pluginOrder[pluginOrder[\"dropShadow\"] = 12600] = \"dropShadow\";\n    pluginOrder[pluginOrder[\"grayscale\"] = 12700] = \"grayscale\";\n    pluginOrder[pluginOrder[\"hueRotate\"] = 12800] = \"hueRotate\";\n    pluginOrder[pluginOrder[\"invert\"] = 12900] = \"invert\";\n    pluginOrder[pluginOrder[\"saturate\"] = 13000] = \"saturate\";\n    pluginOrder[pluginOrder[\"sepia\"] = 13100] = \"sepia\";\n    pluginOrder[pluginOrder[\"backdropFilter\"] = 13200] = \"backdropFilter\";\n    pluginOrder[pluginOrder[\"backdropBlur\"] = 13300] = \"backdropBlur\";\n    pluginOrder[pluginOrder[\"backdropBrightness\"] = 13400] = \"backdropBrightness\";\n    pluginOrder[pluginOrder[\"backdropContrast\"] = 13500] = \"backdropContrast\";\n    pluginOrder[pluginOrder[\"backdropGrayscale\"] = 13600] = \"backdropGrayscale\";\n    pluginOrder[pluginOrder[\"backdropHueRotate\"] = 13700] = \"backdropHueRotate\";\n    pluginOrder[pluginOrder[\"backdropInvert\"] = 13800] = \"backdropInvert\";\n    pluginOrder[pluginOrder[\"backdropOpacity\"] = 13900] = \"backdropOpacity\";\n    pluginOrder[pluginOrder[\"backdropSaturate\"] = 14000] = \"backdropSaturate\";\n    pluginOrder[pluginOrder[\"backdropSepia\"] = 14100] = \"backdropSepia\";\n})(pluginOrder || (pluginOrder = {}));\n\nvar defaultColors = {\n    transparent: 'transparent',\n    current: 'currentColor',\n    light: colors.light,\n    dark: colors.dark,\n    black: colors.black,\n    white: colors.white,\n    gray: colors.coolGray,\n    red: colors.red,\n    yellow: colors.amber,\n    green: colors.emerald,\n    blue: colors.blue,\n    indigo: colors.indigo,\n    purple: colors.violet,\n    pink: colors.pink,\n    rose: colors.rose,\n    fuchsia: colors.fuchsia,\n    violet: colors.violet,\n    cyan: colors.cyan,\n    teal: colors.teal,\n    emerald: colors.emerald,\n    lime: colors.lime,\n    amber: colors.amber,\n    orange: colors.orange,\n    sky: colors.sky,\n    'light-blue': colors.sky,\n    'warm-gray': colors.warmGray,\n    'true-gray': colors.trueGray,\n    'cool-gray': colors.coolGray,\n    'blue-gray': colors.blueGray,\n};\nvar baseConfig = {\n    // purge: [],\n    presets: [],\n    prefixer: true,\n    attributify: false,\n    darkMode: 'class',\n    theme: {\n        screens: {\n            sm: '640px',\n            md: '768px',\n            lg: '1024px',\n            xl: '1280px',\n            '2xl': '1536px',\n        },\n        colors: defaultColors,\n        spacing: {\n            px: '1px',\n            0: '0px',\n            0.5: '0.125rem',\n            1: '0.25rem',\n            1.5: '0.375rem',\n            2: '0.5rem',\n            2.5: '0.625rem',\n            3: '0.75rem',\n            3.5: '0.875rem',\n            4: '1rem',\n            5: '1.25rem',\n            6: '1.5rem',\n            7: '1.75rem',\n            8: '2rem',\n            9: '2.25rem',\n            10: '2.5rem',\n            11: '2.75rem',\n            12: '3rem',\n            14: '3.5rem',\n            16: '4rem',\n            20: '5rem',\n            24: '6rem',\n            28: '7rem',\n            32: '8rem',\n            36: '9rem',\n            40: '10rem',\n            44: '11rem',\n            48: '12rem',\n            52: '13rem',\n            56: '14rem',\n            60: '15rem',\n            64: '16rem',\n            72: '18rem',\n            80: '20rem',\n            96: '24rem',\n            // float -> float/4 rem\n        },\n        animation: {\n            none: 'none',\n            spin: 'spin 1s linear infinite',\n            ping: 'ping 1s cubic-bezier(0, 0, 0.2, 1) infinite',\n            pulse: 'pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite',\n            bounce: 'bounce 1s infinite',\n            'shock': {\n                animation: 'shock',\n                transformOrigin: 'center bottom',\n            },\n            'flash': 'flash',\n            'bubble': 'bubble',\n            'rubber-band': 'rubberBand',\n            'shake-x': 'shakeX',\n            'shake-y': 'shakeY',\n            'head-shake': 'headShake 1s ease-in-out',\n            'swing': {\n                animation: 'swing',\n                transformOrigin: 'top center',\n            },\n            'tada': 'tada',\n            'wobble': 'wobble',\n            'jello': 'jello',\n            'heart-beat': 'heartBeat 1s ease-in-out',\n            'hinge': 'hinge 2s',\n            'jack-in': 'jackInTheBox',\n            'light-speed-in-left': 'lightSpeedInLeft',\n            'light-speed-in-right': 'lightSpeedInRight',\n            'light-speed-out-left': 'lightSpeedOutLeft',\n            'light-speed-out-right': 'lightSpeedOutRight',\n            'flip': {\n                animation: 'flip',\n                backfaceVisibility: 'visible',\n            },\n            'flip-in-x': {\n                animation: 'flipInX',\n                backfaceVisibility: 'visible',\n            },\n            'flip-in-y': {\n                animation: 'flipInY',\n                backfaceVisibility: 'visible',\n            },\n            'flip-out-x': {\n                animation: 'flipOutX',\n                backfaceVisibility: 'visible',\n            },\n            'flip-out-y': {\n                animation: 'flipOutY',\n                backfaceVisibility: 'visible',\n            },\n            'rotate-in': 'rotateIn',\n            'rotate-in-down-left': 'rotateInDownLeft',\n            'rotate-in-down-right': 'rotateInDownRight',\n            'rotate-in-up-left': 'rotateInUpLeft',\n            'rotate-in-up-right': 'rotateInUpRight',\n            'rotate-out': 'rotateOut',\n            'rotate-out-down-left': 'rotateOutDownLeft',\n            'rotate-out-down-right': 'rotateOutDownRight',\n            'rotate-out-up-left': 'rotateOutUpLeft',\n            'rotate-out-up-right': 'rotateOutUpRight',\n            'roll-in': 'rollIn',\n            'roll-out': 'rollOut',\n            'zoom-in': 'zoomIn',\n            'zoom-in-down': 'zoomInDown',\n            'zoom-in-left': 'zoomInLeft',\n            'zoom-in-right': 'zoomInRight',\n            'zoom-in-up': 'zoomInUp',\n            'bounce-in': 'bounceIn 750ms',\n            'bounce-in-down': 'bounceInDown',\n            'bounce-in-left': 'bounceInLeft',\n            'bounce-in-right': 'bounceInRight',\n            'bounce-in-up': 'bounceInUp',\n            'bounce-out': 'bounceOut 750ms',\n            'bounce-out-down': 'bounceOutDown',\n            'bounce-out-left': 'bounceOutLeft',\n            'bounce-out-right': 'bounceOutRight',\n            'bounce-out-up': 'bounceOutUp',\n            'zoom-out': 'zoomOut',\n            'zoom-out-down': 'zoomOutDown',\n            'zoom-out-left': 'zoomOutLeft',\n            'zoom-out-right': 'zoomOutRight',\n            'zoom-out-up': 'zoomOutUp',\n            'slide-in-down': 'slideInDown',\n            'slide-in-left': 'slideInLeft',\n            'slide-in-right': 'slideInRight',\n            'slide-in-up': 'slideInUp',\n            'slide-out-down': 'slideOutDown',\n            'slide-out-left': 'slideOutLeft',\n            'slide-out-right': 'slideOutRight',\n            'slide-out-up': 'slideOutUp',\n            'fade-in': 'fadeIn',\n            'fade-in-down': 'fadeInDown',\n            'fade-in-down-big': 'fadeInDownBig',\n            'fade-in-left': 'fadeInLeft',\n            'fade-in-left-big': 'fadeInLeftBig',\n            'fade-in-right': 'fadeInRight',\n            'fade-in-right-big': 'fadeInRightBig',\n            'fade-in-up': 'fadeInUp',\n            'fade-in-up-big': 'fadeInUpBig',\n            'fade-in-top-left': 'fadeInTopLeft',\n            'fade-in-top-right': 'fadeInTopRight',\n            'fade-in-bottom-left': 'fadeInBottomLeft',\n            'fade-in-bottom-right': 'fadeInBottomRight',\n            'fade-out': 'fadeOut',\n            'fade-out-down': 'fadeOutDown',\n            'fade-out-down-big': 'fadeOutDownBig',\n            'fade-out-left': 'fadeOutLeft',\n            'fade-out-left-big': 'fadeOutLeftBig',\n            'fade-out-right': 'fadeOutRight',\n            'fade-out-right-big': 'fadeOutRightBig',\n            'fade-out-up': 'fadeOutUp',\n            'fade-out-up-big': 'fadeOutUpBig',\n            'back-in-up': 'backInUp',\n            'back-in-down': 'backInDown',\n            'back-in-left': 'backInLeft',\n            'back-in-right': 'backInRight',\n            'back-out-up': 'backOutUp',\n            'back-out-down': 'backOutDown',\n            'back-out-left': 'backOutLeft',\n            'back-out-right': 'backOutRight',\n        },\n        animationDuration: {\n            DEFAULT: '1000ms',\n            75: '75ms',\n            100: '100ms',\n            150: '150ms',\n            200: '200ms',\n            300: '300ms',\n            500: '500ms',\n            700: '700ms',\n            1000: '1000ms',\n            1500: '1500ms',\n            2000: '2000ms',\n            2500: '2500ms',\n            3000: '3000ms',\n            // int >=0 -> int ms\n        },\n        animationDelay: {\n            DEFAULT: '500ms',\n            75: '75ms',\n            100: '100ms',\n            150: '150ms',\n            200: '200ms',\n            300: '300ms',\n            500: '500ms',\n            700: '700ms',\n            1000: '1000ms',\n            1500: '1500ms',\n            2000: '2000ms',\n            2500: '2500ms',\n            3000: '3000ms',\n            // int >=0 -> int ms\n        },\n        animationIterationCount: {\n            DEFAULT: '1',\n            loop: 'infinite',\n            'repeat-1': '1',\n            'repeat-2': '2',\n            'repeat-3': '3',\n            'repeat-4': '4',\n            'repeat-5': '5',\n            'repeat-6': '6',\n            'repeat-7': '7',\n            'repeat-8': '8',\n            'repeat-9': '9',\n            'repeat-10': '10',\n            'repeat-11': '11',\n            'repeat-12': '12',\n        },\n        animationTimingFunction: {\n            DEFAULT: 'ease',\n            linear: 'linear',\n            in: 'ease-in',\n            out: 'ease-out',\n            'in-out': 'ease-in-out',\n        },\n        backdropBlur: function (theme) { return theme('blur'); },\n        backdropBrightness: function (theme) { return theme('brightness'); },\n        backdropContrast: function (theme) { return theme('contrast'); },\n        backdropGrayscale: function (theme) { return theme('grayscale'); },\n        backdropHueRotate: function (theme) { return theme('hueRotate'); },\n        backdropInvert: function (theme) { return theme('invert'); },\n        backdropOpacity: function (theme) { return theme('opacity'); },\n        backdropSaturate: function (theme) { return theme('saturate'); },\n        backdropSepia: function (theme) { return theme('sepia'); },\n        backgroundColor: function (theme) { return theme('colors'); },\n        backgroundImage: {\n            none: 'none',\n            'gradient-1': 'linear-gradient(135deg, #FDEB71 10%, #F8D800 100%)',\n            'gradient-2': 'linear-gradient(135deg, #ABDCFF 10%, #0396FF 100%)',\n            'gradient-3': 'linear-gradient(135deg, #FEB692 10%, #EA5455 100%)',\n            'gradient-4': 'linear-gradient(135deg, #CE9FFC 10%, #7367F0 100%)',\n            'gradient-5': 'linear-gradient(135deg, #90F7EC 10%, #32CCBC 100%)',\n            'gradient-6': 'linear-gradient(135deg, #FFF6B7 10%, #F6416C 100%)',\n            'gradient-7': 'linear-gradient(135deg, #81FBB8 10%, #28C76F 100%)',\n            'gradient-8': 'linear-gradient(135deg, #E2B0FF 10%, #9F44D3 100%)',\n            'gradient-9': 'linear-gradient(135deg, #F97794 10%, #623AA2 100%)',\n            'gradient-10': 'linear-gradient(135deg, #FCCF31 10%, #F55555 100%)',\n            'gradient-11': 'linear-gradient(135deg, #F761A1 10%, #8C1BAB 100%)',\n            'gradient-12': 'linear-gradient(135deg, #43CBFF 10%, #9708CC 100%)',\n            'gradient-13': 'linear-gradient(135deg, #5EFCE8 10%, #736EFE 100%)',\n            'gradient-14': 'linear-gradient(135deg, #FAD7A1 10%, #E96D71 100%)',\n            'gradient-15': 'linear-gradient(135deg, #FFD26F 10%, #3677FF 100%)',\n            'gradient-16': 'linear-gradient(135deg, #A0FE65 10%, #FA016D 100%)',\n            'gradient-17': 'linear-gradient(135deg, #FFDB01 10%, #0E197D 100%)',\n            'gradient-18': 'linear-gradient(135deg, #FEC163 10%, #DE4313 100%)',\n            'gradient-19': 'linear-gradient(135deg, #92FFC0 10%, #002661 100%)',\n            'gradient-20': 'linear-gradient(135deg, #EEAD92 10%, #6018DC 100%)',\n            'gradient-21': 'linear-gradient(135deg, #F6CEEC 10%, #D939CD 100%)',\n            'gradient-22': 'linear-gradient(135deg, #52E5E7 10%, #130CB7 100%)',\n            'gradient-23': 'linear-gradient(135deg, #F1CA74 10%, #A64DB6 100%)',\n            'gradient-24': 'linear-gradient(135deg, #E8D07A 10%, #5312D6 100%)',\n            'gradient-25': 'linear-gradient(135deg, #EECE13 10%, #B210FF 100%)',\n            'gradient-26': 'linear-gradient(135deg, #79F1A4 10%, #0E5CAD 100%)',\n            'gradient-27': 'linear-gradient(135deg, #FDD819 10%, #E80505 100%)',\n            'gradient-28': 'linear-gradient(135deg, #FFF3B0 10%, #CA26FF 100%)',\n            'gradient-29': 'linear-gradient(135deg, #FFF5C3 10%, #9452A5 100%)',\n            'gradient-30': 'linear-gradient(135deg, #F05F57 10%, #360940 100%)',\n            'gradient-31': 'linear-gradient(135deg, #2AFADF 10%, #4C83FF 100%)',\n            'gradient-32': 'linear-gradient(135deg, #FFF886 10%, #F072B6 100%)',\n            'gradient-33': 'linear-gradient(135deg, #97ABFF 10%, #123597 100%)',\n            'gradient-34': 'linear-gradient(135deg, #F5CBFF 10%, #C346C2 100%)',\n            'gradient-35': 'linear-gradient(135deg, #FFF720 10%, #3CD500 100%)',\n            'gradient-36': 'linear-gradient(135deg, #FF6FD8 10%, #3813C2 100%)',\n            'gradient-37': 'linear-gradient(135deg, #EE9AE5 10%, #5961F9 100%)',\n            'gradient-38': 'linear-gradient(135deg, #FFD3A5 10%, #FD6585 100%)',\n            'gradient-39': 'linear-gradient(135deg, #C2FFD8 10%, #465EFB 100%)',\n            'gradient-40': 'linear-gradient(135deg, #FD6585 10%, #0D25B9 100%)',\n            'gradient-41': 'linear-gradient(135deg, #FD6E6A 10%, #FFC600 100%)',\n            'gradient-42': 'linear-gradient(135deg, #65FDF0 10%, #1D6FA3 100%)',\n            'gradient-43': 'linear-gradient(135deg, #6B73FF 10%, #000DFF 100%)',\n            'gradient-44': 'linear-gradient(135deg, #FF7AF5 10%, #513162 100%)',\n            'gradient-45': 'linear-gradient(135deg, #F0FF00 10%, #58CFFB 100%)',\n            'gradient-46': 'linear-gradient(135deg, #FFE985 10%, #FA742B 100%)',\n            'gradient-47': 'linear-gradient(135deg, #FFA6B7 10%, #1E2AD2 100%)',\n            'gradient-48': 'linear-gradient(135deg, #FFAA85 10%, #B3315F 100%)',\n            'gradient-49': 'linear-gradient(135deg, #72EDF2 10%, #5151E5 100%)',\n            'gradient-50': 'linear-gradient(135deg, #FF9D6C 10%, #BB4E75 100%)',\n            'gradient-51': 'linear-gradient(135deg, #F6D242 10%, #FF52E5 100%)',\n            'gradient-52': 'linear-gradient(135deg, #69FF97 10%, #00E4FF 100%)',\n            'gradient-53': 'linear-gradient(135deg, #3B2667 10%, #BC78EC 100%)',\n            'gradient-54': 'linear-gradient(135deg, #70F570 10%, #49C628 100%)',\n            'gradient-55': 'linear-gradient(135deg, #3C8CE7 10%, #00EAFF 100%)',\n            'gradient-56': 'linear-gradient(135deg, #FAB2FF 10%, #1904E5 100%)',\n            'gradient-57': 'linear-gradient(135deg, #81FFEF 10%, #F067B4 100%)',\n            'gradient-58': 'linear-gradient(135deg, #FFA8A8 10%, #FCFF00 100%)',\n            'gradient-59': 'linear-gradient(135deg, #FFCF71 10%, #2376DD 100%)',\n            'gradient-60': 'linear-gradient(135deg, #FF96F9 10%, #C32BAC 100%)',\n            'gradient-to-t': 'linear-gradient(to top, var(--tw-gradient-stops))',\n            'gradient-to-tr': 'linear-gradient(to top right, var(--tw-gradient-stops))',\n            'gradient-to-r': 'linear-gradient(to right, var(--tw-gradient-stops))',\n            'gradient-to-br': 'linear-gradient(to bottom right, var(--tw-gradient-stops))',\n            'gradient-to-b': 'linear-gradient(to bottom, var(--tw-gradient-stops))',\n            'gradient-to-bl': 'linear-gradient(to bottom left, var(--tw-gradient-stops))',\n            'gradient-to-l': 'linear-gradient(to left, var(--tw-gradient-stops))',\n            'gradient-to-tl': 'linear-gradient(to top left, var(--tw-gradient-stops))',\n        },\n        backgroundOpacity: function (theme) { return theme('opacity'); },\n        backgroundPosition: {\n            bottom: 'bottom',\n            center: 'center',\n            left: 'left',\n            'left-bottom': 'left bottom',\n            'left-top': 'left top',\n            right: 'right',\n            'right-bottom': 'right bottom',\n            'right-top': 'right top',\n            top: 'top',\n        },\n        backgroundSize: {\n            auto: 'auto',\n            cover: 'cover',\n            contain: 'contain',\n        },\n        blur: {\n            DEFAULT: '8px',\n            0: '0',\n            sm: '4px',\n            md: '12px',\n            lg: '16px',\n            xl: '24px',\n            '2xl': '40px',\n            '3xl': '64px',\n        },\n        borderColor: function (theme) {\n            var _a;\n            return (__assign({ DEFAULT: theme('colors.gray.200', 'currentColor') }, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})));\n        },\n        borderOpacity: function (theme) { return theme('opacity'); },\n        borderRadius: {\n            DEFAULT: '0.25rem',\n            none: '0px',\n            sm: '0.125rem',\n            md: '0.375rem',\n            lg: '0.5rem',\n            xl: '0.75rem',\n            '2xl': '1rem',\n            '3xl': '1.5rem',\n            // nxl\n            '1': '100%',\n            full: '9999px',\n        },\n        borderWidth: {\n            DEFAULT: '1px',\n            0: '0px',\n            2: '2px',\n            4: '4px',\n            8: '8px',\n            // int >=0 -> int px\n        },\n        boxShadow: {\n            DEFAULT: '0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06)',\n            sm: '0 1px 2px 0 rgba(0, 0, 0, 0.05)',\n            md: '0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06)',\n            lg: '0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05)',\n            xl: '0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04)',\n            '2xl': '0 25px 50px -12px rgba(0, 0, 0, 0.25)',\n            inner: 'inset 0 2px 4px 0 rgba(0, 0, 0, 0.06)',\n            none: 'none',\n        },\n        boxShadowColor: function (theme) { return theme('colors'); },\n        brightness: {\n            0: '0',\n            50: '.5',\n            75: '.75',\n            90: '.9',\n            95: '.95',\n            100: '1',\n            105: '1.05',\n            110: '1.1',\n            125: '1.25',\n            150: '1.5',\n            200: '2',\n        },\n        caretColor: function (theme) {\n            var _a;\n            return (__assign({ auto: 'auto' }, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})));\n        },\n        caretOpacity: function (theme) { return theme('opacity'); },\n        container: {},\n        content: {\n            DEFAULT: '\"\"',\n            'open-quote': 'open-quote',\n            'close-quote': 'close-quote',\n            'open-square': '\"[\"',\n            'close-square': '\"]\"',\n            'open-curly': '\"{\"',\n            'close-curly': '\"}\"',\n            'open-bracket': '\"(\"',\n            'close-bracket': '\")\"',\n        },\n        contrast: {\n            0: '0',\n            50: '.5',\n            75: '.75',\n            100: '1',\n            125: '1.25',\n            150: '1.5',\n            200: '2',\n        },\n        cursor: {\n            auto: 'auto',\n            default: 'default',\n            pointer: 'pointer',\n            wait: 'wait',\n            text: 'text',\n            move: 'move',\n            help: 'help',\n            'not-allowed': 'not-allowed',\n        },\n        divideColor: function (theme) { return theme('borderColor'); },\n        divideOpacity: function (theme) { return theme('borderOpacity'); },\n        divideWidth: function (theme) { return theme('borderWidth'); },\n        dropShadow: {\n            DEFAULT: ['0 1px 2px rgba(0, 0, 0, 0.1)', '0 1px 1px rgba(0, 0, 0, 0.06)'],\n            sm: '0 1px 1px rgba(0,0,0,0.05)',\n            md: ['0 4px 3px rgba(0, 0, 0, 0.07)', '0 2px 2px rgba(0, 0, 0, 0.06)'],\n            lg: ['0 10px 8px rgba(0, 0, 0, 0.04)', '0 4px 3px rgba(0, 0, 0, 0.1)'],\n            xl: ['0 20px 13px rgba(0, 0, 0, 0.03)', '0 8px 5px rgba(0, 0, 0, 0.08)'],\n            '2xl': '0 25px 25px rgba(0, 0, 0, 0.15)',\n            none: '0 0 #0000',\n        },\n        fill: function (theme) {\n            var _a;\n            return (__assign(__assign({}, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})), { none: 'none' }));\n        },\n        flex: {\n            1: '1 1 0%',\n            auto: '1 1 auto',\n            initial: '0 1 auto',\n            none: 'none',\n        },\n        flexGrow: {\n            DEFAULT: '1',\n            0: '0',\n        },\n        flexShrink: {\n            DEFAULT: '1',\n            0: '0',\n        },\n        fontFamily: {\n            sans: [\n                'ui-sans-serif',\n                'system-ui',\n                '-apple-system',\n                'BlinkMacSystemFont',\n                '\"Segoe UI\"',\n                'Roboto',\n                '\"Helvetica Neue\"',\n                'Arial',\n                '\"Noto Sans\"',\n                'sans-serif',\n                '\"Apple Color Emoji\"',\n                '\"Segoe UI Emoji\"',\n                '\"Segoe UI Symbol\"',\n                '\"Noto Color Emoji\"',\n            ],\n            serif: [\n                'ui-serif',\n                'Georgia',\n                'Cambria',\n                '\"Times New Roman\"',\n                'Times',\n                'serif',\n            ],\n            mono: [\n                'ui-monospace',\n                'SFMono-Regular',\n                'Menlo',\n                'Monaco',\n                'Consolas',\n                '\"Liberation Mono\"',\n                '\"Courier New\"',\n                'monospace',\n            ],\n        },\n        fontSize: {\n            xs: ['0.75rem', { lineHeight: '1rem' }],\n            sm: ['0.875rem', { lineHeight: '1.25rem' }],\n            base: ['1rem', { lineHeight: '1.5rem' }],\n            lg: ['1.125rem', { lineHeight: '1.75rem' }],\n            xl: ['1.25rem', { lineHeight: '1.75rem' }],\n            '2xl': ['1.5rem', { lineHeight: '2rem' }],\n            '3xl': ['1.875rem', { lineHeight: '2.25rem' }],\n            '4xl': ['2.25rem', { lineHeight: '2.5rem' }],\n            '5xl': ['3rem', { lineHeight: '1' }],\n            '6xl': ['3.75rem', { lineHeight: '1' }],\n            '7xl': ['4.5rem', { lineHeight: '1' }],\n            '8xl': ['6rem', { lineHeight: '1' }],\n            '9xl': ['8rem', { lineHeight: '1' }],\n            // nxl -> [n rem, lineHeight: 1]\n        },\n        fontWeight: {\n            thin: '100',\n            extralight: '200',\n            light: '300',\n            normal: '400',\n            medium: '500',\n            semibold: '600',\n            bold: '700',\n            extrabold: '800',\n            black: '900',\n            // int[0, 900] -> int\n        },\n        gap: function (theme) { return theme('spacing'); },\n        gradientColorStops: function (theme) { return theme('colors'); },\n        grayscale: {\n            DEFAULT: '100%',\n            0: '0',\n        },\n        gridAutoColumns: {\n            auto: 'auto',\n            min: 'min-content',\n            max: 'max-content',\n            fr: 'minmax(0, 1fr)',\n        },\n        gridAutoRows: {\n            auto: 'auto',\n            min: 'min-content',\n            max: 'max-content',\n            fr: 'minmax(0, 1fr)',\n        },\n        gridColumn: {\n            auto: 'auto',\n            'span-1': 'span 1 / span 1',\n            'span-2': 'span 2 / span 2',\n            'span-3': 'span 3 / span 3',\n            'span-4': 'span 4 / span 4',\n            'span-5': 'span 5 / span 5',\n            'span-6': 'span 6 / span 6',\n            'span-7': 'span 7 / span 7',\n            'span-8': 'span 8 / span 8',\n            'span-9': 'span 9 / span 9',\n            'span-10': 'span 10 / span 10',\n            'span-11': 'span 11 / span 11',\n            'span-12': 'span 12 / span 12',\n            // span-int(>=1) -> span int / span int\n            'span-full': '1 / -1',\n        },\n        gridColumnEnd: {\n            auto: 'auto',\n            1: '1',\n            2: '2',\n            3: '3',\n            4: '4',\n            5: '5',\n            6: '6',\n            7: '7',\n            8: '8',\n            9: '9',\n            10: '10',\n            11: '11',\n            12: '12',\n            13: '13',\n            // int >=1 -> int\n        },\n        gridColumnStart: {\n            auto: 'auto',\n            1: '1',\n            2: '2',\n            3: '3',\n            4: '4',\n            5: '5',\n            6: '6',\n            7: '7',\n            8: '8',\n            9: '9',\n            10: '10',\n            11: '11',\n            12: '12',\n            13: '13',\n            // int >=1 -> int\n        },\n        gridRow: {\n            auto: 'auto',\n            'span-1': 'span 1 / span 1',\n            'span-2': 'span 2 / span 2',\n            'span-3': 'span 3 / span 3',\n            'span-4': 'span 4 / span 4',\n            'span-5': 'span 5 / span 5',\n            'span-6': 'span 6 / span 6',\n            // span-int(>=1) -> span int / span int\n            'span-full': '1 / -1',\n        },\n        gridRowStart: {\n            auto: 'auto',\n            1: '1',\n            2: '2',\n            3: '3',\n            4: '4',\n            5: '5',\n            6: '6',\n            7: '7',\n            // int >=1 -> int\n        },\n        gridRowEnd: {\n            auto: 'auto',\n            1: '1',\n            2: '2',\n            3: '3',\n            4: '4',\n            5: '5',\n            6: '6',\n            7: '7',\n            // int >=1 -> int\n        },\n        gridTemplateColumns: {\n            none: 'none',\n            1: 'repeat(1, minmax(0, 1fr))',\n            2: 'repeat(2, minmax(0, 1fr))',\n            3: 'repeat(3, minmax(0, 1fr))',\n            4: 'repeat(4, minmax(0, 1fr))',\n            5: 'repeat(5, minmax(0, 1fr))',\n            6: 'repeat(6, minmax(0, 1fr))',\n            7: 'repeat(7, minmax(0, 1fr))',\n            8: 'repeat(8, minmax(0, 1fr))',\n            9: 'repeat(9, minmax(0, 1fr))',\n            10: 'repeat(10, minmax(0, 1fr))',\n            11: 'repeat(11, minmax(0, 1fr))',\n            12: 'repeat(12, minmax(0, 1fr))',\n            // int >=1 -> repeat(int, minmax(0, 1fr))\n        },\n        gridTemplateRows: {\n            none: 'none',\n            1: 'repeat(1, minmax(0, 1fr))',\n            2: 'repeat(2, minmax(0, 1fr))',\n            3: 'repeat(3, minmax(0, 1fr))',\n            4: 'repeat(4, minmax(0, 1fr))',\n            5: 'repeat(5, minmax(0, 1fr))',\n            6: 'repeat(6, minmax(0, 1fr))',\n            // int >=1 -> repeat(int, minmax(0, 1fr))\n        },\n        height: function (theme, _a) {\n            var _b, _c;\n            var breakpoints = _a.breakpoints;\n            return (__assign(__assign(__assign({ auto: 'auto' }, ((_b = theme('spacing')) !== null && _b !== void 0 ? _b : {})), { '1/2': '50%', '1/3': '33.333333%', '2/3': '66.666667%', '1/4': '25%', '2/4': '50%', '3/4': '75%', '1/5': '20%', '2/5': '40%', '3/5': '60%', '4/5': '80%', '1/6': '16.666667%', '2/6': '33.333333%', '3/6': '50%', '4/6': '66.666667%', '5/6': '83.333333%', \n                // fraction -> percent\n                xs: '20rem', sm: '24rem', md: '28rem', lg: '32rem', xl: '36rem', '2xl': '42rem', '3xl': '48rem', '4xl': '56rem', '5xl': '64rem', '6xl': '72rem', '7xl': '80rem', \n                // nxl\n                full: '100%', min: 'min-content', max: 'max-content', prose: '65ch', screen: '100vh' }), breakpoints((_c = theme('screens')) !== null && _c !== void 0 ? _c : {})));\n        },\n        hueRotate: {\n            '-180': '-180deg',\n            '-90': '-90deg',\n            '-60': '-60deg',\n            '-30': '-30deg',\n            '-15': '-15deg',\n            0: '0deg',\n            15: '15deg',\n            30: '30deg',\n            60: '60deg',\n            90: '90deg',\n            180: '180deg',\n        },\n        inset: function (theme, _a) {\n            var _b;\n            var negative = _a.negative;\n            return (__assign(__assign(__assign({ auto: 'auto' }, ((_b = theme('spacing')) !== null && _b !== void 0 ? _b : {})), negative(theme('spacing'))), { '1/2': '50%', '1/3': '33.333333%', '2/3': '66.666667%', '1/4': '25%', '2/4': '50%', '3/4': '75%', full: '100%', '-1/2': '-50%', '-1/3': '-33.333333%', '-2/3': '-66.666667%', '-1/4': '-25%', '-2/4': '-50%', '-3/4': '-75%', '-full': '-100%' }));\n        },\n        invert: {\n            DEFAULT: '100%',\n            0: '0',\n        },\n        keyframes: keyframes,\n        letterSpacing: {\n            tighter: '-0.05em',\n            tight: '-0.025em',\n            normal: '0em',\n            wide: '0.025em',\n            wider: '0.05em',\n            widest: '0.1em',\n        },\n        lineHeight: {\n            none: '1',\n            tight: '1.25',\n            snug: '1.375',\n            normal: '1.5',\n            relaxed: '1.625',\n            loose: '2',\n            3: '.75rem',\n            4: '1rem',\n            5: '1.25rem',\n            6: '1.5rem',\n            7: '1.75rem',\n            8: '2rem',\n            9: '2.25rem',\n            10: '2.5rem',\n            // int>=0 -> int/4 rem\n        },\n        listStyleType: {\n            none: 'none',\n            circle: 'circle',\n            square: 'square',\n            disc: 'disc',\n            decimal: 'decimal',\n            'zero-decimal': 'decimal-leading-zero',\n            greek: 'lower-greek',\n            roman: 'lower-roman',\n            alpha: 'lower-alpha',\n            'upper-roman': 'upper-roman',\n            'upper-alpha': 'upper-alpha',\n        },\n        margin: function (theme, _a) {\n            var _b;\n            var negative = _a.negative;\n            return (__assign(__assign({ auto: 'auto' }, ((_b = theme('spacing')) !== null && _b !== void 0 ? _b : {})), negative(theme('spacing'))));\n        },\n        maxHeight: function (theme, _a) {\n            var _b, _c;\n            var breakpoints = _a.breakpoints;\n            return (__assign(__assign(__assign({ none: 'none' }, ((_b = theme('spacing')) !== null && _b !== void 0 ? _b : {})), { xs: '20rem', sm: '24rem', md: '28rem', lg: '32rem', xl: '36rem', '2xl': '42rem', '3xl': '48rem', '4xl': '56rem', '5xl': '64rem', '6xl': '72rem', '7xl': '80rem', \n                // nxl\n                full: '100%', min: 'min-content', max: 'max-content', prose: '65ch', screen: '100vh' }), breakpoints((_c = theme('screens')) !== null && _c !== void 0 ? _c : {})));\n        },\n        maxWidth: function (theme, _a) {\n            var _b, _c;\n            var breakpoints = _a.breakpoints;\n            return (__assign(__assign(__assign({ none: 'none' }, ((_b = theme('spacing')) !== null && _b !== void 0 ? _b : {})), { xs: '20rem', sm: '24rem', md: '28rem', lg: '32rem', xl: '36rem', '2xl': '42rem', '3xl': '48rem', '4xl': '56rem', '5xl': '64rem', '6xl': '72rem', '7xl': '80rem', \n                // nxl\n                full: '100%', min: 'min-content', max: 'max-content', prose: '65ch', screen: '100vw' }), breakpoints((_c = theme('screens')) !== null && _c !== void 0 ? _c : {})));\n        },\n        minHeight: function (theme) { return theme('maxHeight'); },\n        minWidth: function (theme) { return theme('maxWidth'); },\n        objectPosition: {\n            bottom: 'bottom',\n            center: 'center',\n            left: 'left',\n            'left-bottom': 'left bottom',\n            'left-top': 'left top',\n            right: 'right',\n            'right-bottom': 'right bottom',\n            'right-top': 'right top',\n            top: 'top',\n        },\n        opacity: {\n            0: '0',\n            5: '0.05',\n            10: '0.1',\n            20: '0.2',\n            25: '0.25',\n            30: '0.3',\n            40: '0.4',\n            50: '0.5',\n            60: '0.6',\n            70: '0.7',\n            75: '0.75',\n            80: '0.8',\n            90: '0.9',\n            95: '0.95',\n            100: '1',\n            // float -> float/100\n        },\n        order: {\n            first: '-9999',\n            last: '9999',\n            none: '0',\n            1: '1',\n            2: '2',\n            3: '3',\n            4: '4',\n            5: '5',\n            6: '6',\n            7: '7',\n            8: '8',\n            9: '9',\n            10: '10',\n            11: '11',\n            12: '12',\n            // int[1, 9999]\n        },\n        outline: {\n            none: ['2px solid transparent', '2px'],\n            // white: ['2px dotted white', '2px'],\n            // black: ['2px dotted black', '2px'],\n        },\n        outlineColor: function (theme) { return theme('colors'); },\n        padding: function (theme) { return theme('spacing'); },\n        perspective: function (theme) {\n            var _a;\n            return (__assign(__assign({ none: 'none' }, ((_a = theme('spacing')) !== null && _a !== void 0 ? _a : {})), { xs: '20rem', sm: '24rem', md: '28rem', lg: '32rem', xl: '36rem', '2xl': '42rem', '3xl': '48rem', '4xl': '56rem', '5xl': '64rem', '6xl': '72rem', '7xl': '80rem' }));\n        },\n        perspectiveOrigin: {\n            center: 'center',\n            top: 'top',\n            'top-right': 'top right',\n            right: 'right',\n            'bottom-right': 'bottom right',\n            bottom: 'bottom',\n            'bottom-left': 'bottom left',\n            left: 'left',\n            'top-left': 'top left',\n        },\n        placeholderColor: function (theme) { return theme('colors'); },\n        placeholderOpacity: function (theme) { return theme('opacity'); },\n        ringColor: function (theme) {\n            var _a;\n            return (__assign({ DEFAULT: theme('colors.blue.500', '#3b82f6') }, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})));\n        },\n        ringOffsetColor: function (theme) { return theme('colors'); },\n        ringOffsetWidth: {\n            0: '0px',\n            1: '1px',\n            2: '2px',\n            4: '4px',\n            8: '8px',\n            // float -> float px\n        },\n        ringOpacity: function (theme) {\n            var _a;\n            return (__assign({ DEFAULT: '0.5' }, ((_a = theme('opacity')) !== null && _a !== void 0 ? _a : {})));\n        },\n        ringWidth: {\n            DEFAULT: '3px',\n            0: '0px',\n            1: '1px',\n            2: '2px',\n            4: '4px',\n            8: '8px',\n            // float -> float px\n        },\n        rotate: {\n            '-180': '-180deg',\n            '-90': '-90deg',\n            '-45': '-45deg',\n            '-12': '-12deg',\n            '-6': '-6deg',\n            '-3': '-3deg',\n            '-2': '-2deg',\n            '-1': '-1deg',\n            0: '0deg',\n            1: '1deg',\n            2: '2deg',\n            3: '3deg',\n            6: '6deg',\n            12: '12deg',\n            45: '45deg',\n            90: '90deg',\n            180: '180deg',\n            // float[0, 360] -> float[0deg, 360deg]\n            // ...negative\n        },\n        saturate: {\n            DEFAULT: '0',\n            0: '0',\n            50: '.5',\n            100: '1',\n            150: '1.5',\n            200: '2',\n        },\n        scale: {\n            0: '0',\n            50: '.5',\n            75: '.75',\n            90: '.9',\n            95: '.95',\n            100: '1',\n            105: '1.05',\n            110: '1.1',\n            125: '1.25',\n            150: '1.5',\n            // int >=0 -> int/100\n        },\n        sepia: {\n            DEFAULT: '100%',\n            0: '0',\n        },\n        skew: {\n            '-12': '-12deg',\n            '-6': '-6deg',\n            '-3': '-3deg',\n            '-2': '-2deg',\n            '-1': '-1deg',\n            0: '0deg',\n            1: '1deg',\n            2: '2deg',\n            3: '3deg',\n            6: '6deg',\n            12: '12deg',\n            // float[0, 360] -> float[0deg, 360deg]\n            // ...negative\n        },\n        space: function (theme, _a) {\n            var negative = _a.negative;\n            return (__assign(__assign({}, theme('spacing')), negative(theme('spacing'))));\n        },\n        stroke: function (theme) {\n            var _a;\n            return (__assign(__assign({}, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})), { none: 'none' }));\n        },\n        strokeWidth: {\n            0: '0',\n            1: '1',\n            2: '2',\n        },\n        strokeDashArray: {\n            0: '0',\n            1: '1',\n            2: '2',\n        },\n        strokeDashOffset: {\n            0: '0',\n            1: '1',\n            2: '2',\n        },\n        tabSize: {\n            DEFAULT: '4',\n            0: '0',\n            2: '2',\n            4: '4',\n            8: '8',\n            // int >=0 -> int px\n        },\n        textColor: function (theme) { return theme('colors'); },\n        textOpacity: function (theme) { return theme('opacity'); },\n        textShadow: {\n            DEFAULT: '0px 0px 1px rgb(0 0 0 / 20%), 0px 0px 1px rgb(1 0 5 / 10%)',\n            sm: '1px 1px 3px rgb(36 37 47 / 25%)',\n            md: '0px 1px 2px rgb(30 29 39 / 19%), 1px 2px 4px rgb(54 64 147 / 18%)',\n            lg: '3px 3px 6px rgb(0 0 0 / 26%), 0 0 5px rgb(15 3 86 / 22%)',\n            xl: '1px 1px 3px rgb(0 0 0 / 29%), 2px 4px 7px rgb(73 64 125 / 35%)',\n            none: 'none',\n        },\n        textDecorationColor: function (theme) { return theme('colors'); },\n        textDecorationOpacity: function (theme) { return theme('opacity'); },\n        textDecorationLength: {\n            'auto': 'auto',\n            0: '0px',\n            2: '2px',\n            4: '4px',\n            8: '8px',\n        },\n        textDecorationOffset: {\n            'auto': 'auto',\n            0: '0px',\n            1: '1px',\n            2: '2px',\n            4: '4px',\n            8: '8px',\n        },\n        textIndent: {\n            DEFAULT: '1.5rem',\n            xs: '0.5rem',\n            sm: '1rem',\n            md: '1.5rem',\n            lg: '2rem',\n            xl: '2.5rem',\n            '2xl': '3rem',\n            '3xl': '4rem',\n        },\n        textStrokeColor: function (theme) {\n            var _a;\n            return (__assign({ DEFAULT: theme('colors.gray.200', 'currentColor') }, ((_a = theme('colors')) !== null && _a !== void 0 ? _a : {})));\n        },\n        textStrokeWidth: {\n            DEFAULT: 'medium',\n            'none': '0',\n            'sm': 'thin',\n            'md': 'medium',\n            'lg': 'thick',\n        },\n        transformOrigin: {\n            center: 'center',\n            top: 'top',\n            'top-right': 'top right',\n            right: 'right',\n            'bottom-right': 'bottom right',\n            bottom: 'bottom',\n            'bottom-left': 'bottom left',\n            left: 'left',\n            'top-left': 'top left',\n        },\n        transitionDuration: {\n            DEFAULT: '150ms',\n            75: '75ms',\n            100: '100ms',\n            150: '150ms',\n            200: '200ms',\n            300: '300ms',\n            500: '500ms',\n            700: '700ms',\n            1000: '1000ms',\n            // int >=0 -> int ms\n        },\n        transitionDelay: {\n            75: '75ms',\n            100: '100ms',\n            150: '150ms',\n            200: '200ms',\n            300: '300ms',\n            500: '500ms',\n            700: '700ms',\n            1000: '1000ms',\n            // int >=0 -> int ms\n        },\n        transitionProperty: {\n            DEFAULT: 'background-color, border-color, color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter',\n            none: 'none',\n            all: 'all',\n            colors: 'background-color, border-color, color, fill, stroke',\n            opacity: 'opacity',\n            shadow: 'box-shadow',\n            transform: 'transform',\n        },\n        transitionTimingFunction: {\n            DEFAULT: 'cubic-bezier(0.4, 0, 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