firebase-analytics.js

import { registerVersion, _registerComponent, _getProvider, getApp } from 'https://www.gstatic.com/firebasejs/9.8.1/firebase-app.js';

/**
 * @license
 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * The JS SDK supports 5 log levels and also allows a user the ability to
 * silence the logs altogether.
 *
 * The order is a follows:
 * DEBUG < VERBOSE < INFO < WARN < ERROR
 *
 * All of the log types above the current log level will be captured (i.e. if
 * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and
 * `VERBOSE` logs will not)
 */
var LogLevel;
(function (LogLevel) {
    LogLevel[LogLevel["DEBUG"] = 0] = "DEBUG";
    LogLevel[LogLevel["VERBOSE"] = 1] = "VERBOSE";
    LogLevel[LogLevel["INFO"] = 2] = "INFO";
    LogLevel[LogLevel["WARN"] = 3] = "WARN";
    LogLevel[LogLevel["ERROR"] = 4] = "ERROR";
    LogLevel[LogLevel["SILENT"] = 5] = "SILENT";
})(LogLevel || (LogLevel = {}));
const levelStringToEnum = {
    'debug': LogLevel.DEBUG,
    'verbose': LogLevel.VERBOSE,
    'info': LogLevel.INFO,
    'warn': LogLevel.WARN,
    'error': LogLevel.ERROR,
    'silent': LogLevel.SILENT
};
/**
 * The default log level
 */
const defaultLogLevel = LogLevel.INFO;
/**
 * By default, `console.debug` is not displayed in the developer console (in
 * chrome). To avoid forcing users to have to opt-in to these logs twice
 * (i.e. once for firebase, and once in the console), we are sending `DEBUG`
 * logs to the `console.log` function.
 */
const ConsoleMethod = {
    [LogLevel.DEBUG]: 'log',
    [LogLevel.VERBOSE]: 'log',
    [LogLevel.INFO]: 'info',
    [LogLevel.WARN]: 'warn',
    [LogLevel.ERROR]: 'error'
};
/**
 * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR
 * messages on to their corresponding console counterparts (if the log method
 * is supported by the current log level)
 */
const defaultLogHandler = (instance, logType, ...args) => {
    if (logType < instance.logLevel) {
        return;
    }
    const now = new Date().toISOString();
    const method = ConsoleMethod[logType];
    if (method) {
        console[method](`[${now}]  ${instance.name}:`, ...args);
    }
    else {
        throw new Error(`Attempted to log a message with an invalid logType (value: ${logType})`);
    }
};
class Logger {
    /**
     * Gives you an instance of a Logger to capture messages according to
     * Firebase's logging scheme.
     *
     * @param name The name that the logs will be associated with
     */
    constructor(name) {
        this.name = name;
        /**
         * The log level of the given Logger instance.
         */
        this._logLevel = defaultLogLevel;
        /**
         * The main (internal) log handler for the Logger instance.
         * Can be set to a new function in internal package code but not by user.
         */
        this._logHandler = defaultLogHandler;
        /**
         * The optional, additional, user-defined log handler for the Logger instance.
         */
        this._userLogHandler = null;
    }
    get logLevel() {
        return this._logLevel;
    }
    set logLevel(val) {
        if (!(val in LogLevel)) {
            throw new TypeError(`Invalid value "${val}" assigned to \`logLevel\``);
        }
        this._logLevel = val;
    }
    // Workaround for setter/getter having to be the same type.
    setLogLevel(val) {
        this._logLevel = typeof val === 'string' ? levelStringToEnum[val] : val;
    }
    get logHandler() {
        return this._logHandler;
    }
    set logHandler(val) {
        if (typeof val !== 'function') {
            throw new TypeError('Value assigned to `logHandler` must be a function');
        }
        this._logHandler = val;
    }
    get userLogHandler() {
        return this._userLogHandler;
    }
    set userLogHandler(val) {
        this._userLogHandler = val;
    }
    /**
     * The functions below are all based on the `console` interface
     */
    debug(...args) {
        this._userLogHandler && this._userLogHandler(this, LogLevel.DEBUG, ...args);
        this._logHandler(this, LogLevel.DEBUG, ...args);
    }
    log(...args) {
        this._userLogHandler &&
            this._userLogHandler(this, LogLevel.VERBOSE, ...args);
        this._logHandler(this, LogLevel.VERBOSE, ...args);
    }
    info(...args) {
        this._userLogHandler && this._userLogHandler(this, LogLevel.INFO, ...args);
        this._logHandler(this, LogLevel.INFO, ...args);
    }
    warn(...args) {
        this._userLogHandler && this._userLogHandler(this, LogLevel.WARN, ...args);
        this._logHandler(this, LogLevel.WARN, ...args);
    }
    error(...args) {
        this._userLogHandler && this._userLogHandler(this, LogLevel.ERROR, ...args);
        this._logHandler(this, LogLevel.ERROR, ...args);
    }
}

/**
 * @license
 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function isBrowserExtension() {
    const runtime = typeof chrome === 'object'
        ? chrome.runtime
        : typeof browser === 'object'
            ? browser.runtime
            : undefined;
    return typeof runtime === 'object' && runtime.id !== undefined;
}
/**
 * This method checks if indexedDB is supported by current browser/service worker context
 * @return true if indexedDB is supported by current browser/service worker context
 */
function isIndexedDBAvailable() {
    return typeof indexedDB === 'object';
}
/**
 * This method validates browser/sw context for indexedDB by opening a dummy indexedDB database and reject
 * if errors occur during the database open operation.
 *
 * @throws exception if current browser/sw context can't run idb.open (ex: Safari iframe, Firefox
 * private browsing)
 */
function validateIndexedDBOpenable() {
    return new Promise((resolve, reject) => {
        try {
            let preExist = true;
            const DB_CHECK_NAME = 'validate-browser-context-for-indexeddb-analytics-module';
            const request = self.indexedDB.open(DB_CHECK_NAME);
            request.onsuccess = () => {
                request.result.close();
                // delete database only when it doesn't pre-exist
                if (!preExist) {
                    self.indexedDB.deleteDatabase(DB_CHECK_NAME);
                }
                resolve(true);
            };
            request.onupgradeneeded = () => {
                preExist = false;
            };
            request.onerror = () => {
                var _a;
                reject(((_a = request.error) === null || _a === void 0 ? void 0 : _a.message) || '');
            };
        }
        catch (error) {
            reject(error);
        }
    });
}
/**
 *
 * This method checks whether cookie is enabled within current browser
 * @return true if cookie is enabled within current browser
 */
function areCookiesEnabled() {
    if (typeof navigator === 'undefined' || !navigator.cookieEnabled) {
        return false;
    }
    return true;
}

/**
 * @license
 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * @fileoverview Standardized Firebase Error.
 *
 * Usage:
 *
 *   // Typescript string literals for type-safe codes
 *   type Err =
 *     'unknown' |
 *     'object-not-found'
 *     ;
 *
 *   // Closure enum for type-safe error codes
 *   // at-enum {string}
 *   var Err = {
 *     UNKNOWN: 'unknown',
 *     OBJECT_NOT_FOUND: 'object-not-found',
 *   }
 *
 *   let errors: Map<Err, string> = {
 *     'generic-error': "Unknown error",
 *     'file-not-found': "Could not find file: {$file}",
 *   };
 *
 *   // Type-safe function - must pass a valid error code as param.
 *   let error = new ErrorFactory<Err>('service', 'Service', errors);
 *
 *   ...
 *   throw error.create(Err.GENERIC);
 *   ...
 *   throw error.create(Err.FILE_NOT_FOUND, {'file': fileName});
 *   ...
 *   // Service: Could not file file: foo.txt (service/file-not-found).
 *
 *   catch (e) {
 *     assert(e.message === "Could not find file: foo.txt.");
 *     if (e.code === 'service/file-not-found') {
 *       console.log("Could not read file: " + e['file']);
 *     }
 *   }
 */
const ERROR_NAME = 'FirebaseError';
// Based on code from:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types
class FirebaseError extends Error {
    constructor(
    /** The error code for this error. */
    code, message, 
    /** Custom data for this error. */
    customData) {
        super(message);
        this.code = code;
        this.customData = customData;
        /** The custom name for all FirebaseErrors. */
        this.name = ERROR_NAME;
        // Fix For ES5
        // https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work
        Object.setPrototypeOf(this, FirebaseError.prototype);
        // Maintains proper stack trace for where our error was thrown.
        // Only available on V8.
        if (Error.captureStackTrace) {
            Error.captureStackTrace(this, ErrorFactory.prototype.create);
        }
    }
}
class ErrorFactory {
    constructor(service, serviceName, errors) {
        this.service = service;
        this.serviceName = serviceName;
        this.errors = errors;
    }
    create(code, ...data) {
        const customData = data[0] || {};
        const fullCode = `${this.service}/${code}`;
        const template = this.errors[code];
        const message = template ? replaceTemplate(template, customData) : 'Error';
        // Service Name: Error message (service/code).
        const fullMessage = `${this.serviceName}: ${message} (${fullCode}).`;
        const error = new FirebaseError(fullCode, fullMessage, customData);
        return error;
    }
}
function replaceTemplate(template, data) {
    return template.replace(PATTERN, (_, key) => {
        const value = data[key];
        return value != null ? String(value) : `<${key}?>`;
    });
}
const PATTERN = /\{\$([^}]+)}/g;
/**
 * Deep equal two objects. Support Arrays and Objects.
 */
function deepEqual(a, b) {
    if (a === b) {
        return true;
    }
    const aKeys = Object.keys(a);
    const bKeys = Object.keys(b);
    for (const k of aKeys) {
        if (!bKeys.includes(k)) {
            return false;
        }
        const aProp = a[k];
        const bProp = b[k];
        if (isObject(aProp) && isObject(bProp)) {
            if (!deepEqual(aProp, bProp)) {
                return false;
            }
        }
        else if (aProp !== bProp) {
            return false;
        }
    }
    for (const k of bKeys) {
        if (!aKeys.includes(k)) {
            return false;
        }
    }
    return true;
}
function isObject(thing) {
    return thing !== null && typeof thing === 'object';
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * The amount of milliseconds to exponentially increase.
 */
const DEFAULT_INTERVAL_MILLIS = 1000;
/**
 * The factor to backoff by.
 * Should be a number greater than 1.
 */
const DEFAULT_BACKOFF_FACTOR = 2;
/**
 * The maximum milliseconds to increase to.
 *
 * <p>Visible for testing
 */
const MAX_VALUE_MILLIS = 4 * 60 * 60 * 1000; // Four hours, like iOS and Android.
/**
 * The percentage of backoff time to randomize by.
 * See
 * http://go/safe-client-behavior#step-1-determine-the-appropriate-retry-interval-to-handle-spike-traffic
 * for context.
 *
 * <p>Visible for testing
 */
const RANDOM_FACTOR = 0.5;
/**
 * Based on the backoff method from
 * https://github.com/google/closure-library/blob/master/closure/goog/math/exponentialbackoff.js.
 * Extracted here so we don't need to pass metadata and a stateful ExponentialBackoff object around.
 */
function calculateBackoffMillis(backoffCount, intervalMillis = DEFAULT_INTERVAL_MILLIS, backoffFactor = DEFAULT_BACKOFF_FACTOR) {
    // Calculates an exponentially increasing value.
    // Deviation: calculates value from count and a constant interval, so we only need to save value
    // and count to restore state.
    const currBaseValue = intervalMillis * Math.pow(backoffFactor, backoffCount);
    // A random "fuzz" to avoid waves of retries.
    // Deviation: randomFactor is required.
    const randomWait = Math.round(
    // A fraction of the backoff value to add/subtract.
    // Deviation: changes multiplication order to improve readability.
    RANDOM_FACTOR *
        currBaseValue *
        // A random float (rounded to int by Math.round above) in the range [-1, 1]. Determines
        // if we add or subtract.
        (Math.random() - 0.5) *
        2);
    // Limits backoff to max to avoid effectively permanent backoff.
    return Math.min(MAX_VALUE_MILLIS, currBaseValue + randomWait);
}

/**
 * @license
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function getModularInstance(service) {
    if (service && service._delegate) {
        return service._delegate;
    }
    else {
        return service;
    }
}

/**
 * Component for service name T, e.g. `auth`, `auth-internal`
 */
class Component {
    /**
     *
     * @param name The public service name, e.g. app, auth, firestore, database
     * @param instanceFactory Service factory responsible for creating the public interface
     * @param type whether the service provided by the component is public or private
     */
    constructor(name, instanceFactory, type) {
        this.name = name;
        this.instanceFactory = instanceFactory;
        this.type = type;
        this.multipleInstances = false;
        /**
         * Properties to be added to the service namespace
         */
        this.serviceProps = {};
        this.instantiationMode = "LAZY" /* LAZY */;
        this.onInstanceCreated = null;
    }
    setInstantiationMode(mode) {
        this.instantiationMode = mode;
        return this;
    }
    setMultipleInstances(multipleInstances) {
        this.multipleInstances = multipleInstances;
        return this;
    }
    setServiceProps(props) {
        this.serviceProps = props;
        return this;
    }
    setInstanceCreatedCallback(callback) {
        this.onInstanceCreated = callback;
        return this;
    }
}

const instanceOfAny = (object, constructors) => constructors.some((c) => object instanceof c);

let idbProxyableTypes;
let cursorAdvanceMethods;
// This is a function to prevent it throwing up in node environments.
function getIdbProxyableTypes() {
    return (idbProxyableTypes ||
        (idbProxyableTypes = [
            IDBDatabase,
            IDBObjectStore,
            IDBIndex,
            IDBCursor,
            IDBTransaction,
        ]));
}
// This is a function to prevent it throwing up in node environments.
function getCursorAdvanceMethods() {
    return (cursorAdvanceMethods ||
        (cursorAdvanceMethods = [
            IDBCursor.prototype.advance,
            IDBCursor.prototype.continue,
            IDBCursor.prototype.continuePrimaryKey,
        ]));
}
const cursorRequestMap = new WeakMap();
const transactionDoneMap = new WeakMap();
const transactionStoreNamesMap = new WeakMap();
const transformCache = new WeakMap();
const reverseTransformCache = new WeakMap();
function promisifyRequest(request) {
    const promise = new Promise((resolve, reject) => {
        const unlisten = () => {
            request.removeEventListener('success', success);
            request.removeEventListener('error', error);
        };
        const success = () => {
            resolve(wrap(request.result));
            unlisten();
        };
        const error = () => {
            reject(request.error);
            unlisten();
        };
        request.addEventListener('success', success);
        request.addEventListener('error', error);
    });
    promise
        .then((value) => {
        // Since cursoring reuses the IDBRequest (*sigh*), we cache it for later retrieval
        // (see wrapFunction).
        if (value instanceof IDBCursor) {
            cursorRequestMap.set(value, request);
        }
        // Catching to avoid "Uncaught Promise exceptions"
    })
        .catch(() => { });
    // This mapping exists in reverseTransformCache but doesn't doesn't exist in transformCache. This
    // is because we create many promises from a single IDBRequest.
    reverseTransformCache.set(promise, request);
    return promise;
}
function cacheDonePromiseForTransaction(tx) {
    // Early bail if we've already created a done promise for this transaction.
    if (transactionDoneMap.has(tx))
        return;
    const done = new Promise((resolve, reject) => {
        const unlisten = () => {
            tx.removeEventListener('complete', complete);
            tx.removeEventListener('error', error);
            tx.removeEventListener('abort', error);
        };
        const complete = () => {
            resolve();
            unlisten();
        };
        const error = () => {
            reject(tx.error || new DOMException('AbortError', 'AbortError'));
            unlisten();
        };
        tx.addEventListener('complete', complete);
        tx.addEventListener('error', error);
        tx.addEventListener('abort', error);
    });
    // Cache it for later retrieval.
    transactionDoneMap.set(tx, done);
}
let idbProxyTraps = {
    get(target, prop, receiver) {
        if (target instanceof IDBTransaction) {
            // Special handling for transaction.done.
            if (prop === 'done')
                return transactionDoneMap.get(target);
            // Polyfill for objectStoreNames because of Edge.
            if (prop === 'objectStoreNames') {
                return target.objectStoreNames || transactionStoreNamesMap.get(target);
            }
            // Make tx.store return the only store in the transaction, or undefined if there are many.
            if (prop === 'store') {
                return receiver.objectStoreNames[1]
                    ? undefined
                    : receiver.objectStore(receiver.objectStoreNames[0]);
            }
        }
        // Else transform whatever we get back.
        return wrap(target[prop]);
    },
    set(target, prop, value) {
        target[prop] = value;
        return true;
    },
    has(target, prop) {
        if (target instanceof IDBTransaction &&
            (prop === 'done' || prop === 'store')) {
            return true;
        }
        return prop in target;
    },
};
function replaceTraps(callback) {
    idbProxyTraps = callback(idbProxyTraps);
}
function wrapFunction(func) {
    // Due to expected object equality (which is enforced by the caching in `wrap`), we
    // only create one new func per func.
    // Edge doesn't support objectStoreNames (booo), so we polyfill it here.
    if (func === IDBDatabase.prototype.transaction &&
        !('objectStoreNames' in IDBTransaction.prototype)) {
        return function (storeNames, ...args) {
            const tx = func.call(unwrap(this), storeNames, ...args);
            transactionStoreNamesMap.set(tx, storeNames.sort ? storeNames.sort() : [storeNames]);
            return wrap(tx);
        };
    }
    // Cursor methods are special, as the behaviour is a little more different to standard IDB. In
    // IDB, you advance the cursor and wait for a new 'success' on the IDBRequest that gave you the
    // cursor. It's kinda like a promise that can resolve with many values. That doesn't make sense
    // with real promises, so each advance methods returns a new promise for the cursor object, or
    // undefined if the end of the cursor has been reached.
    if (getCursorAdvanceMethods().includes(func)) {
        return function (...args) {
            // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use
            // the original object.
            func.apply(unwrap(this), args);
            return wrap(cursorRequestMap.get(this));
        };
    }
    return function (...args) {
        // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use
        // the original object.
        return wrap(func.apply(unwrap(this), args));
    };
}
function transformCachableValue(value) {
    if (typeof value === 'function')
        return wrapFunction(value);
    // This doesn't return, it just creates a 'done' promise for the transaction,
    // which is later returned for transaction.done (see idbObjectHandler).
    if (value instanceof IDBTransaction)
        cacheDonePromiseForTransaction(value);
    if (instanceOfAny(value, getIdbProxyableTypes()))
        return new Proxy(value, idbProxyTraps);
    // Return the same value back if we're not going to transform it.
    return value;
}
function wrap(value) {
    // We sometimes generate multiple promises from a single IDBRequest (eg when cursoring), because
    // IDB is weird and a single IDBRequest can yield many responses, so these can't be cached.
    if (value instanceof IDBRequest)
        return promisifyRequest(value);
    // If we've already transformed this value before, reuse the transformed value.
    // This is faster, but it also provides object equality.
    if (transformCache.has(value))
        return transformCache.get(value);
    const newValue = transformCachableValue(value);
    // Not all types are transformed.
    // These may be primitive types, so they can't be WeakMap keys.
    if (newValue !== value) {
        transformCache.set(value, newValue);
        reverseTransformCache.set(newValue, value);
    }
    return newValue;
}
const unwrap = (value) => reverseTransformCache.get(value);

/**
 * Open a database.
 *
 * @param name Name of the database.
 * @param version Schema version.
 * @param callbacks Additional callbacks.
 */
function openDB(name, version, { blocked, upgrade, blocking, terminated } = {}) {
    const request = indexedDB.open(name, version);
    const openPromise = wrap(request);
    if (upgrade) {
        request.addEventListener('upgradeneeded', (event) => {
            upgrade(wrap(request.result), event.oldVersion, event.newVersion, wrap(request.transaction));
        });
    }
    if (blocked)
        request.addEventListener('blocked', () => blocked());
    openPromise
        .then((db) => {
        if (terminated)
            db.addEventListener('close', () => terminated());
        if (blocking)
            db.addEventListener('versionchange', () => blocking());
    })
        .catch(() => { });
    return openPromise;
}

const readMethods = ['get', 'getKey', 'getAll', 'getAllKeys', 'count'];
const writeMethods = ['put', 'add', 'delete', 'clear'];
const cachedMethods = new Map();
function getMethod(target, prop) {
    if (!(target instanceof IDBDatabase &&
        !(prop in target) &&
        typeof prop === 'string')) {
        return;
    }
    if (cachedMethods.get(prop))
        return cachedMethods.get(prop);
    const targetFuncName = prop.replace(/FromIndex$/, '');
    const useIndex = prop !== targetFuncName;
    const isWrite = writeMethods.includes(targetFuncName);
    if (
    // Bail if the target doesn't exist on the target. Eg, getAll isn't in Edge.
    !(targetFuncName in (useIndex ? IDBIndex : IDBObjectStore).prototype) ||
        !(isWrite || readMethods.includes(targetFuncName))) {
        return;
    }
    const method = async function (storeName, ...args) {
        // isWrite ? 'readwrite' : undefined gzipps better, but fails in Edge :(
        const tx = this.transaction(storeName, isWrite ? 'readwrite' : 'readonly');
        let target = tx.store;
        if (useIndex)
            target = target.index(args.shift());
        // Must reject if op rejects.
        // If it's a write operation, must reject if tx.done rejects.
        // Must reject with op rejection first.
        // Must resolve with op value.
        // Must handle both promises (no unhandled rejections)
        return (await Promise.all([
            target[targetFuncName](...args),
            isWrite && tx.done,
        ]))[0];
    };
    cachedMethods.set(prop, method);
    return method;
}
replaceTraps((oldTraps) => ({
    ...oldTraps,
    get: (target, prop, receiver) => getMethod(target, prop) || oldTraps.get(target, prop, receiver),
    has: (target, prop) => !!getMethod(target, prop) || oldTraps.has(target, prop),
}));

const name$1 = "@firebase/installations";
const version$1 = "0.5.9";

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const PENDING_TIMEOUT_MS = 10000;
const PACKAGE_VERSION = `w:${version$1}`;
const INTERNAL_AUTH_VERSION = 'FIS_v2';
const INSTALLATIONS_API_URL = 'https://firebaseinstallations.googleapis.com/v1';
const TOKEN_EXPIRATION_BUFFER = 60 * 60 * 1000; // One hour
const SERVICE = 'installations';
const SERVICE_NAME = 'Installations';

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const ERROR_DESCRIPTION_MAP = {
    ["missing-app-config-values" /* MISSING_APP_CONFIG_VALUES */]: 'Missing App configuration value: "{$valueName}"',
    ["not-registered" /* NOT_REGISTERED */]: 'Firebase Installation is not registered.',
    ["installation-not-found" /* INSTALLATION_NOT_FOUND */]: 'Firebase Installation not found.',
    ["request-failed" /* REQUEST_FAILED */]: '{$requestName} request failed with error "{$serverCode} {$serverStatus}: {$serverMessage}"',
    ["app-offline" /* APP_OFFLINE */]: 'Could not process request. Application offline.',
    ["delete-pending-registration" /* DELETE_PENDING_REGISTRATION */]: "Can't delete installation while there is a pending registration request."
};
const ERROR_FACTORY$1 = new ErrorFactory(SERVICE, SERVICE_NAME, ERROR_DESCRIPTION_MAP);
/** Returns true if error is a FirebaseError that is based on an error from the server. */
function isServerError(error) {
    return (error instanceof FirebaseError &&
        error.code.includes("request-failed" /* REQUEST_FAILED */));
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function getInstallationsEndpoint({ projectId }) {
    return `${INSTALLATIONS_API_URL}/projects/${projectId}/installations`;
}
function extractAuthTokenInfoFromResponse(response) {
    return {
        token: response.token,
        requestStatus: 2 /* COMPLETED */,
        expiresIn: getExpiresInFromResponseExpiresIn(response.expiresIn),
        creationTime: Date.now()
    };
}
async function getErrorFromResponse(requestName, response) {
    const responseJson = await response.json();
    const errorData = responseJson.error;
    return ERROR_FACTORY$1.create("request-failed" /* REQUEST_FAILED */, {
        requestName,
        serverCode: errorData.code,
        serverMessage: errorData.message,
        serverStatus: errorData.status
    });
}
function getHeaders$1({ apiKey }) {
    return new Headers({
        'Content-Type': 'application/json',
        Accept: 'application/json',
        'x-goog-api-key': apiKey
    });
}
function getHeadersWithAuth(appConfig, { refreshToken }) {
    const headers = getHeaders$1(appConfig);
    headers.append('Authorization', getAuthorizationHeader(refreshToken));
    return headers;
}
/**
 * Calls the passed in fetch wrapper and returns the response.
 * If the returned response has a status of 5xx, re-runs the function once and
 * returns the response.
 */
async function retryIfServerError(fn) {
    const result = await fn();
    if (result.status >= 500 && result.status < 600) {
        // Internal Server Error. Retry request.
        return fn();
    }
    return result;
}
function getExpiresInFromResponseExpiresIn(responseExpiresIn) {
    // This works because the server will never respond with fractions of a second.
    return Number(responseExpiresIn.replace('s', '000'));
}
function getAuthorizationHeader(refreshToken) {
    return `${INTERNAL_AUTH_VERSION} ${refreshToken}`;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
async function createInstallationRequest({ appConfig, heartbeatServiceProvider }, { fid }) {
    const endpoint = getInstallationsEndpoint(appConfig);
    const headers = getHeaders$1(appConfig);
    // If heartbeat service exists, add the heartbeat string to the header.
    const heartbeatService = heartbeatServiceProvider.getImmediate({
        optional: true
    });
    if (heartbeatService) {
        const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();
        if (heartbeatsHeader) {
            headers.append('x-firebase-client', heartbeatsHeader);
        }
    }
    const body = {
        fid,
        authVersion: INTERNAL_AUTH_VERSION,
        appId: appConfig.appId,
        sdkVersion: PACKAGE_VERSION
    };
    const request = {
        method: 'POST',
        headers,
        body: JSON.stringify(body)
    };
    const response = await retryIfServerError(() => fetch(endpoint, request));
    if (response.ok) {
        const responseValue = await response.json();
        const registeredInstallationEntry = {
            fid: responseValue.fid || fid,
            registrationStatus: 2 /* COMPLETED */,
            refreshToken: responseValue.refreshToken,
            authToken: extractAuthTokenInfoFromResponse(responseValue.authToken)
        };
        return registeredInstallationEntry;
    }
    else {
        throw await getErrorFromResponse('Create Installation', response);
    }
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/** Returns a promise that resolves after given time passes. */
function sleep(ms) {
    return new Promise(resolve => {
        setTimeout(resolve, ms);
    });
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function bufferToBase64UrlSafe(array) {
    const b64 = btoa(String.fromCharCode(...array));
    return b64.replace(/\+/g, '-').replace(/\//g, '_');
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const VALID_FID_PATTERN = /^[cdef][\w-]{21}$/;
const INVALID_FID = '';
/**
 * Generates a new FID using random values from Web Crypto API.
 * Returns an empty string if FID generation fails for any reason.
 */
function generateFid() {
    try {
        // A valid FID has exactly 22 base64 characters, which is 132 bits, or 16.5
        // bytes. our implementation generates a 17 byte array instead.
        const fidByteArray = new Uint8Array(17);
        const crypto = self.crypto || self.msCrypto;
        crypto.getRandomValues(fidByteArray);
        // Replace the first 4 random bits with the constant FID header of 0b0111.
        fidByteArray[0] = 0b01110000 + (fidByteArray[0] % 0b00010000);
        const fid = encode(fidByteArray);
        return VALID_FID_PATTERN.test(fid) ? fid : INVALID_FID;
    }
    catch (_a) {
        // FID generation errored
        return INVALID_FID;
    }
}
/** Converts a FID Uint8Array to a base64 string representation. */
function encode(fidByteArray) {
    const b64String = bufferToBase64UrlSafe(fidByteArray);
    // Remove the 23rd character that was added because of the extra 4 bits at the
    // end of our 17 byte array, and the '=' padding.
    return b64String.substr(0, 22);
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/** Returns a string key that can be used to identify the app. */
function getKey(appConfig) {
    return `${appConfig.appName}!${appConfig.appId}`;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const fidChangeCallbacks = new Map();
/**
 * Calls the onIdChange callbacks with the new FID value, and broadcasts the
 * change to other tabs.
 */
function fidChanged(appConfig, fid) {
    const key = getKey(appConfig);
    callFidChangeCallbacks(key, fid);
    broadcastFidChange(key, fid);
}
function callFidChangeCallbacks(key, fid) {
    const callbacks = fidChangeCallbacks.get(key);
    if (!callbacks) {
        return;
    }
    for (const callback of callbacks) {
        callback(fid);
    }
}
function broadcastFidChange(key, fid) {
    const channel = getBroadcastChannel();
    if (channel) {
        channel.postMessage({ key, fid });
    }
    closeBroadcastChannel();
}
let broadcastChannel = null;
/** Opens and returns a BroadcastChannel if it is supported by the browser. */
function getBroadcastChannel() {
    if (!broadcastChannel && 'BroadcastChannel' in self) {
        broadcastChannel = new BroadcastChannel('[Firebase] FID Change');
        broadcastChannel.onmessage = e => {
            callFidChangeCallbacks(e.data.key, e.data.fid);
        };
    }
    return broadcastChannel;
}
function closeBroadcastChannel() {
    if (fidChangeCallbacks.size === 0 && broadcastChannel) {
        broadcastChannel.close();
        broadcastChannel = null;
    }
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const DATABASE_NAME = 'firebase-installations-database';
const DATABASE_VERSION = 1;
const OBJECT_STORE_NAME = 'firebase-installations-store';
let dbPromise = null;
function getDbPromise() {
    if (!dbPromise) {
        dbPromise = openDB(DATABASE_NAME, DATABASE_VERSION, {
            upgrade: (db, oldVersion) => {
                // We don't use 'break' in this switch statement, the fall-through
                // behavior is what we want, because if there are multiple versions between
                // the old version and the current version, we want ALL the migrations
                // that correspond to those versions to run, not only the last one.
                // eslint-disable-next-line default-case
                switch (oldVersion) {
                    case 0:
                        db.createObjectStore(OBJECT_STORE_NAME);
                }
            }
        });
    }
    return dbPromise;
}
/** Assigns or overwrites the record for the given key with the given value. */
async function set(appConfig, value) {
    const key = getKey(appConfig);
    const db = await getDbPromise();
    const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
    const objectStore = tx.objectStore(OBJECT_STORE_NAME);
    const oldValue = (await objectStore.get(key));
    await objectStore.put(value, key);
    await tx.done;
    if (!oldValue || oldValue.fid !== value.fid) {
        fidChanged(appConfig, value.fid);
    }
    return value;
}
/** Removes record(s) from the objectStore that match the given key. */
async function remove(appConfig) {
    const key = getKey(appConfig);
    const db = await getDbPromise();
    const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
    await tx.objectStore(OBJECT_STORE_NAME).delete(key);
    await tx.done;
}
/**
 * Atomically updates a record with the result of updateFn, which gets
 * called with the current value. If newValue is undefined, the record is
 * deleted instead.
 * @return Updated value
 */
async function update(appConfig, updateFn) {
    const key = getKey(appConfig);
    const db = await getDbPromise();
    const tx = db.transaction(OBJECT_STORE_NAME, 'readwrite');
    const store = tx.objectStore(OBJECT_STORE_NAME);
    const oldValue = (await store.get(key));
    const newValue = updateFn(oldValue);
    if (newValue === undefined) {
        await store.delete(key);
    }
    else {
        await store.put(newValue, key);
    }
    await tx.done;
    if (newValue && (!oldValue || oldValue.fid !== newValue.fid)) {
        fidChanged(appConfig, newValue.fid);
    }
    return newValue;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Updates and returns the InstallationEntry from the database.
 * Also triggers a registration request if it is necessary and possible.
 */
async function getInstallationEntry(installations) {
    let registrationPromise;
    const installationEntry = await update(installations.appConfig, oldEntry => {
        const installationEntry = updateOrCreateInstallationEntry(oldEntry);
        const entryWithPromise = triggerRegistrationIfNecessary(installations, installationEntry);
        registrationPromise = entryWithPromise.registrationPromise;
        return entryWithPromise.installationEntry;
    });
    if (installationEntry.fid === INVALID_FID) {
        // FID generation failed. Waiting for the FID from the server.
        return { installationEntry: await registrationPromise };
    }
    return {
        installationEntry,
        registrationPromise
    };
}
/**
 * Creates a new Installation Entry if one does not exist.
 * Also clears timed out pending requests.
 */
function updateOrCreateInstallationEntry(oldEntry) {
    const entry = oldEntry || {
        fid: generateFid(),
        registrationStatus: 0 /* NOT_STARTED */
    };
    return clearTimedOutRequest(entry);
}
/**
 * If the Firebase Installation is not registered yet, this will trigger the
 * registration and return an InProgressInstallationEntry.
 *
 * If registrationPromise does not exist, the installationEntry is guaranteed
 * to be registered.
 */
function triggerRegistrationIfNecessary(installations, installationEntry) {
    if (installationEntry.registrationStatus === 0 /* NOT_STARTED */) {
        if (!navigator.onLine) {
            // Registration required but app is offline.
            const registrationPromiseWithError = Promise.reject(ERROR_FACTORY$1.create("app-offline" /* APP_OFFLINE */));
            return {
                installationEntry,
                registrationPromise: registrationPromiseWithError
            };
        }
        // Try registering. Change status to IN_PROGRESS.
        const inProgressEntry = {
            fid: installationEntry.fid,
            registrationStatus: 1 /* IN_PROGRESS */,
            registrationTime: Date.now()
        };
        const registrationPromise = registerInstallation(installations, inProgressEntry);
        return { installationEntry: inProgressEntry, registrationPromise };
    }
    else if (installationEntry.registrationStatus === 1 /* IN_PROGRESS */) {
        return {
            installationEntry,
            registrationPromise: waitUntilFidRegistration(installations)
        };
    }
    else {
        return { installationEntry };
    }
}
/** This will be executed only once for each new Firebase Installation. */
async function registerInstallation(installations, installationEntry) {
    try {
        const registeredInstallationEntry = await createInstallationRequest(installations, installationEntry);
        return set(installations.appConfig, registeredInstallationEntry);
    }
    catch (e) {
        if (isServerError(e) && e.customData.serverCode === 409) {
            // Server returned a "FID can not be used" error.
            // Generate a new ID next time.
            await remove(installations.appConfig);
        }
        else {
            // Registration failed. Set FID as not registered.
            await set(installations.appConfig, {
                fid: installationEntry.fid,
                registrationStatus: 0 /* NOT_STARTED */
            });
        }
        throw e;
    }
}
/** Call if FID registration is pending in another request. */
async function waitUntilFidRegistration(installations) {
    // Unfortunately, there is no way of reliably observing when a value in
    // IndexedDB changes (yet, see https://github.com/WICG/indexed-db-observers),
    // so we need to poll.
    let entry = await updateInstallationRequest(installations.appConfig);
    while (entry.registrationStatus === 1 /* IN_PROGRESS */) {
        // createInstallation request still in progress.
        await sleep(100);
        entry = await updateInstallationRequest(installations.appConfig);
    }
    if (entry.registrationStatus === 0 /* NOT_STARTED */) {
        // The request timed out or failed in a different call. Try again.
        const { installationEntry, registrationPromise } = await getInstallationEntry(installations);
        if (registrationPromise) {
            return registrationPromise;
        }
        else {
            // if there is no registrationPromise, entry is registered.
            return installationEntry;
        }
    }
    return entry;
}
/**
 * Called only if there is a CreateInstallation request in progress.
 *
 * Updates the InstallationEntry in the DB based on the status of the
 * CreateInstallation request.
 *
 * Returns the updated InstallationEntry.
 */
function updateInstallationRequest(appConfig) {
    return update(appConfig, oldEntry => {
        if (!oldEntry) {
            throw ERROR_FACTORY$1.create("installation-not-found" /* INSTALLATION_NOT_FOUND */);
        }
        return clearTimedOutRequest(oldEntry);
    });
}
function clearTimedOutRequest(entry) {
    if (hasInstallationRequestTimedOut(entry)) {
        return {
            fid: entry.fid,
            registrationStatus: 0 /* NOT_STARTED */
        };
    }
    return entry;
}
function hasInstallationRequestTimedOut(installationEntry) {
    return (installationEntry.registrationStatus === 1 /* IN_PROGRESS */ &&
        installationEntry.registrationTime + PENDING_TIMEOUT_MS < Date.now());
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
async function generateAuthTokenRequest({ appConfig, heartbeatServiceProvider }, installationEntry) {
    const endpoint = getGenerateAuthTokenEndpoint(appConfig, installationEntry);
    const headers = getHeadersWithAuth(appConfig, installationEntry);
    // If heartbeat service exists, add the heartbeat string to the header.
    const heartbeatService = heartbeatServiceProvider.getImmediate({
        optional: true
    });
    if (heartbeatService) {
        const heartbeatsHeader = await heartbeatService.getHeartbeatsHeader();
        if (heartbeatsHeader) {
            headers.append('x-firebase-client', heartbeatsHeader);
        }
    }
    const body = {
        installation: {
            sdkVersion: PACKAGE_VERSION,
            appId: appConfig.appId
        }
    };
    const request = {
        method: 'POST',
        headers,
        body: JSON.stringify(body)
    };
    const response = await retryIfServerError(() => fetch(endpoint, request));
    if (response.ok) {
        const responseValue = await response.json();
        const completedAuthToken = extractAuthTokenInfoFromResponse(responseValue);
        return completedAuthToken;
    }
    else {
        throw await getErrorFromResponse('Generate Auth Token', response);
    }
}
function getGenerateAuthTokenEndpoint(appConfig, { fid }) {
    return `${getInstallationsEndpoint(appConfig)}/${fid}/authTokens:generate`;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Returns a valid authentication token for the installation. Generates a new
 * token if one doesn't exist, is expired or about to expire.
 *
 * Should only be called if the Firebase Installation is registered.
 */
async function refreshAuthToken(installations, forceRefresh = false) {
    let tokenPromise;
    const entry = await update(installations.appConfig, oldEntry => {
        if (!isEntryRegistered(oldEntry)) {
            throw ERROR_FACTORY$1.create("not-registered" /* NOT_REGISTERED */);
        }
        const oldAuthToken = oldEntry.authToken;
        if (!forceRefresh && isAuthTokenValid(oldAuthToken)) {
            // There is a valid token in the DB.
            return oldEntry;
        }
        else if (oldAuthToken.requestStatus === 1 /* IN_PROGRESS */) {
            // There already is a token request in progress.
            tokenPromise = waitUntilAuthTokenRequest(installations, forceRefresh);
            return oldEntry;
        }
        else {
            // No token or token expired.
            if (!navigator.onLine) {
                throw ERROR_FACTORY$1.create("app-offline" /* APP_OFFLINE */);
            }
            const inProgressEntry = makeAuthTokenRequestInProgressEntry(oldEntry);
            tokenPromise = fetchAuthTokenFromServer(installations, inProgressEntry);
            return inProgressEntry;
        }
    });
    const authToken = tokenPromise
        ? await tokenPromise
        : entry.authToken;
    return authToken;
}
/**
 * Call only if FID is registered and Auth Token request is in progress.
 *
 * Waits until the current pending request finishes. If the request times out,
 * tries once in this thread as well.
 */
async function waitUntilAuthTokenRequest(installations, forceRefresh) {
    // Unfortunately, there is no way of reliably observing when a value in
    // IndexedDB changes (yet, see https://github.com/WICG/indexed-db-observers),
    // so we need to poll.
    let entry = await updateAuthTokenRequest(installations.appConfig);
    while (entry.authToken.requestStatus === 1 /* IN_PROGRESS */) {
        // generateAuthToken still in progress.
        await sleep(100);
        entry = await updateAuthTokenRequest(installations.appConfig);
    }
    const authToken = entry.authToken;
    if (authToken.requestStatus === 0 /* NOT_STARTED */) {
        // The request timed out or failed in a different call. Try again.
        return refreshAuthToken(installations, forceRefresh);
    }
    else {
        return authToken;
    }
}
/**
 * Called only if there is a GenerateAuthToken request in progress.
 *
 * Updates the InstallationEntry in the DB based on the status of the
 * GenerateAuthToken request.
 *
 * Returns the updated InstallationEntry.
 */
function updateAuthTokenRequest(appConfig) {
    return update(appConfig, oldEntry => {
        if (!isEntryRegistered(oldEntry)) {
            throw ERROR_FACTORY$1.create("not-registered" /* NOT_REGISTERED */);
        }
        const oldAuthToken = oldEntry.authToken;
        if (hasAuthTokenRequestTimedOut(oldAuthToken)) {
            return Object.assign(Object.assign({}, oldEntry), { authToken: { requestStatus: 0 /* NOT_STARTED */ } });
        }
        return oldEntry;
    });
}
async function fetchAuthTokenFromServer(installations, installationEntry) {
    try {
        const authToken = await generateAuthTokenRequest(installations, installationEntry);
        const updatedInstallationEntry = Object.assign(Object.assign({}, installationEntry), { authToken });
        await set(installations.appConfig, updatedInstallationEntry);
        return authToken;
    }
    catch (e) {
        if (isServerError(e) &&
            (e.customData.serverCode === 401 || e.customData.serverCode === 404)) {
            // Server returned a "FID not found" or a "Invalid authentication" error.
            // Generate a new ID next time.
            await remove(installations.appConfig);
        }
        else {
            const updatedInstallationEntry = Object.assign(Object.assign({}, installationEntry), { authToken: { requestStatus: 0 /* NOT_STARTED */ } });
            await set(installations.appConfig, updatedInstallationEntry);
        }
        throw e;
    }
}
function isEntryRegistered(installationEntry) {
    return (installationEntry !== undefined &&
        installationEntry.registrationStatus === 2 /* COMPLETED */);
}
function isAuthTokenValid(authToken) {
    return (authToken.requestStatus === 2 /* COMPLETED */ &&
        !isAuthTokenExpired(authToken));
}
function isAuthTokenExpired(authToken) {
    const now = Date.now();
    return (now < authToken.creationTime ||
        authToken.creationTime + authToken.expiresIn < now + TOKEN_EXPIRATION_BUFFER);
}
/** Returns an updated InstallationEntry with an InProgressAuthToken. */
function makeAuthTokenRequestInProgressEntry(oldEntry) {
    const inProgressAuthToken = {
        requestStatus: 1 /* IN_PROGRESS */,
        requestTime: Date.now()
    };
    return Object.assign(Object.assign({}, oldEntry), { authToken: inProgressAuthToken });
}
function hasAuthTokenRequestTimedOut(authToken) {
    return (authToken.requestStatus === 1 /* IN_PROGRESS */ &&
        authToken.requestTime + PENDING_TIMEOUT_MS < Date.now());
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Creates a Firebase Installation if there isn't one for the app and
 * returns the Installation ID.
 * @param installations - The `Installations` instance.
 *
 * @public
 */
async function getId(installations) {
    const installationsImpl = installations;
    const { installationEntry, registrationPromise } = await getInstallationEntry(installationsImpl);
    if (registrationPromise) {
        registrationPromise.catch(console.error);
    }
    else {
        // If the installation is already registered, update the authentication
        // token if needed.
        refreshAuthToken(installationsImpl).catch(console.error);
    }
    return installationEntry.fid;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Returns a Firebase Installations auth token, identifying the current
 * Firebase Installation.
 * @param installations - The `Installations` instance.
 * @param forceRefresh - Force refresh regardless of token expiration.
 *
 * @public
 */
async function getToken(installations, forceRefresh = false) {
    const installationsImpl = installations;
    await completeInstallationRegistration(installationsImpl);
    // At this point we either have a Registered Installation in the DB, or we've
    // already thrown an error.
    const authToken = await refreshAuthToken(installationsImpl, forceRefresh);
    return authToken.token;
}
async function completeInstallationRegistration(installations) {
    const { registrationPromise } = await getInstallationEntry(installations);
    if (registrationPromise) {
        // A createInstallation request is in progress. Wait until it finishes.
        await registrationPromise;
    }
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
function extractAppConfig(app) {
    if (!app || !app.options) {
        throw getMissingValueError('App Configuration');
    }
    if (!app.name) {
        throw getMissingValueError('App Name');
    }
    // Required app config keys
    const configKeys = [
        'projectId',
        'apiKey',
        'appId'
    ];
    for (const keyName of configKeys) {
        if (!app.options[keyName]) {
            throw getMissingValueError(keyName);
        }
    }
    return {
        appName: app.name,
        projectId: app.options.projectId,
        apiKey: app.options.apiKey,
        appId: app.options.appId
    };
}
function getMissingValueError(valueName) {
    return ERROR_FACTORY$1.create("missing-app-config-values" /* MISSING_APP_CONFIG_VALUES */, {
        valueName
    });
}

/**
 * @license
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const INSTALLATIONS_NAME = 'installations';
const INSTALLATIONS_NAME_INTERNAL = 'installations-internal';
const publicFactory = (container) => {
    const app = container.getProvider('app').getImmediate();
    // Throws if app isn't configured properly.
    const appConfig = extractAppConfig(app);
    const heartbeatServiceProvider = _getProvider(app, 'heartbeat');
    const installationsImpl = {
        app,
        appConfig,
        heartbeatServiceProvider,
        _delete: () => Promise.resolve()
    };
    return installationsImpl;
};
const internalFactory = (container) => {
    const app = container.getProvider('app').getImmediate();
    // Internal FIS instance relies on public FIS instance.
    const installations = _getProvider(app, INSTALLATIONS_NAME).getImmediate();
    const installationsInternal = {
        getId: () => getId(installations),
        getToken: (forceRefresh) => getToken(installations, forceRefresh)
    };
    return installationsInternal;
};
function registerInstallations() {
    _registerComponent(new Component(INSTALLATIONS_NAME, publicFactory, "PUBLIC" /* PUBLIC */));
    _registerComponent(new Component(INSTALLATIONS_NAME_INTERNAL, internalFactory, "PRIVATE" /* PRIVATE */));
}

/**
 * Firebase Installations
 *
 * @packageDocumentation
 */
registerInstallations();
registerVersion(name$1, version$1);
// BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation
registerVersion(name$1, version$1, 'esm2017');

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Type constant for Firebase Analytics.
 */
const ANALYTICS_TYPE = 'analytics';
// Key to attach FID to in gtag params.
const GA_FID_KEY = 'firebase_id';
const ORIGIN_KEY = 'origin';
const FETCH_TIMEOUT_MILLIS = 60 * 1000;
const DYNAMIC_CONFIG_URL = 'https://firebase.googleapis.com/v1alpha/projects/-/apps/{app-id}/webConfig';
const GTAG_URL = 'https://www.googletagmanager.com/gtag/js';

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const logger = new Logger('@firebase/analytics');

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Makeshift polyfill for Promise.allSettled(). Resolves when all promises
 * have either resolved or rejected.
 *
 * @param promises Array of promises to wait for.
 */
function promiseAllSettled(promises) {
    return Promise.all(promises.map(promise => promise.catch(e => e)));
}
/**
 * Inserts gtag script tag into the page to asynchronously download gtag.
 * @param dataLayerName Name of datalayer (most often the default, "_dataLayer").
 */
function insertScriptTag(dataLayerName, measurementId) {
    const script = document.createElement('script');
    // We are not providing an analyticsId in the URL because it would trigger a `page_view`
    // without fid. We will initialize ga-id using gtag (config) command together with fid.
    script.src = `${GTAG_URL}?l=${dataLayerName}&id=${measurementId}`;
    script.async = true;
    document.head.appendChild(script);
}
/**
 * Get reference to, or create, global datalayer.
 * @param dataLayerName Name of datalayer (most often the default, "_dataLayer").
 */
function getOrCreateDataLayer(dataLayerName) {
    // Check for existing dataLayer and create if needed.
    let dataLayer = [];
    if (Array.isArray(window[dataLayerName])) {
        dataLayer = window[dataLayerName];
    }
    else {
        window[dataLayerName] = dataLayer;
    }
    return dataLayer;
}
/**
 * Wrapped gtag logic when gtag is called with 'config' command.
 *
 * @param gtagCore Basic gtag function that just appends to dataLayer.
 * @param initializationPromisesMap Map of appIds to their initialization promises.
 * @param dynamicConfigPromisesList Array of dynamic config fetch promises.
 * @param measurementIdToAppId Map of GA measurementIDs to corresponding Firebase appId.
 * @param measurementId GA Measurement ID to set config for.
 * @param gtagParams Gtag config params to set.
 */
async function gtagOnConfig(gtagCore, initializationPromisesMap, dynamicConfigPromisesList, measurementIdToAppId, measurementId, gtagParams) {
    // If config is already fetched, we know the appId and can use it to look up what FID promise we
    /// are waiting for, and wait only on that one.
    const correspondingAppId = measurementIdToAppId[measurementId];
    try {
        if (correspondingAppId) {
            await initializationPromisesMap[correspondingAppId];
        }
        else {
            // If config is not fetched yet, wait for all configs (we don't know which one we need) and
            // find the appId (if any) corresponding to this measurementId. If there is one, wait on
            // that appId's initialization promise. If there is none, promise resolves and gtag
            // call goes through.
            const dynamicConfigResults = await promiseAllSettled(dynamicConfigPromisesList);
            const foundConfig = dynamicConfigResults.find(config => config.measurementId === measurementId);
            if (foundConfig) {
                await initializationPromisesMap[foundConfig.appId];
            }
        }
    }
    catch (e) {
        logger.error(e);
    }
    gtagCore("config" /* CONFIG */, measurementId, gtagParams);
}
/**
 * Wrapped gtag logic when gtag is called with 'event' command.
 *
 * @param gtagCore Basic gtag function that just appends to dataLayer.
 * @param initializationPromisesMap Map of appIds to their initialization promises.
 * @param dynamicConfigPromisesList Array of dynamic config fetch promises.
 * @param measurementId GA Measurement ID to log event to.
 * @param gtagParams Params to log with this event.
 */
async function gtagOnEvent(gtagCore, initializationPromisesMap, dynamicConfigPromisesList, measurementId, gtagParams) {
    try {
        let initializationPromisesToWaitFor = [];
        // If there's a 'send_to' param, check if any ID specified matches
        // an initializeIds() promise we are waiting for.
        if (gtagParams && gtagParams['send_to']) {
            let gaSendToList = gtagParams['send_to'];
            // Make it an array if is isn't, so it can be dealt with the same way.
            if (!Array.isArray(gaSendToList)) {
                gaSendToList = [gaSendToList];
            }
            // Checking 'send_to' fields requires having all measurement ID results back from
            // the dynamic config fetch.
            const dynamicConfigResults = await promiseAllSettled(dynamicConfigPromisesList);
            for (const sendToId of gaSendToList) {
                // Any fetched dynamic measurement ID that matches this 'send_to' ID
                const foundConfig = dynamicConfigResults.find(config => config.measurementId === sendToId);
                const initializationPromise = foundConfig && initializationPromisesMap[foundConfig.appId];
                if (initializationPromise) {
                    initializationPromisesToWaitFor.push(initializationPromise);
                }
                else {
                    // Found an item in 'send_to' that is not associated
                    // directly with an FID, possibly a group.  Empty this array,
                    // exit the loop early, and let it get populated below.
                    initializationPromisesToWaitFor = [];
                    break;
                }
            }
        }
        // This will be unpopulated if there was no 'send_to' field , or
        // if not all entries in the 'send_to' field could be mapped to
        // a FID. In these cases, wait on all pending initialization promises.
        if (initializationPromisesToWaitFor.length === 0) {
            initializationPromisesToWaitFor = Object.values(initializationPromisesMap);
        }
        // Run core gtag function with args after all relevant initialization
        // promises have been resolved.
        await Promise.all(initializationPromisesToWaitFor);
        // Workaround for http://b/141370449 - third argument cannot be undefined.
        gtagCore("event" /* EVENT */, measurementId, gtagParams || {});
    }
    catch (e) {
        logger.error(e);
    }
}
/**
 * Wraps a standard gtag function with extra code to wait for completion of
 * relevant initialization promises before sending requests.
 *
 * @param gtagCore Basic gtag function that just appends to dataLayer.
 * @param initializationPromisesMap Map of appIds to their initialization promises.
 * @param dynamicConfigPromisesList Array of dynamic config fetch promises.
 * @param measurementIdToAppId Map of GA measurementIDs to corresponding Firebase appId.
 */
function wrapGtag(gtagCore, 
/**
 * Allows wrapped gtag calls to wait on whichever intialization promises are required,
 * depending on the contents of the gtag params' `send_to` field, if any.
 */
initializationPromisesMap, 
/**
 * Wrapped gtag calls sometimes require all dynamic config fetches to have returned
 * before determining what initialization promises (which include FIDs) to wait for.
 */
dynamicConfigPromisesList, 
/**
 * Wrapped gtag config calls can narrow down which initialization promise (with FID)
 * to wait for if the measurementId is already fetched, by getting the corresponding appId,
 * which is the key for the initialization promises map.
 */
measurementIdToAppId) {
    /**
     * Wrapper around gtag that ensures FID is sent with gtag calls.
     * @param command Gtag command type.
     * @param idOrNameOrParams Measurement ID if command is EVENT/CONFIG, params if command is SET.
     * @param gtagParams Params if event is EVENT/CONFIG.
     */
    async function gtagWrapper(command, idOrNameOrParams, gtagParams) {
        try {
            // If event, check that relevant initialization promises have completed.
            if (command === "event" /* EVENT */) {
                // If EVENT, second arg must be measurementId.
                await gtagOnEvent(gtagCore, initializationPromisesMap, dynamicConfigPromisesList, idOrNameOrParams, gtagParams);
            }
            else if (command === "config" /* CONFIG */) {
                // If CONFIG, second arg must be measurementId.
                await gtagOnConfig(gtagCore, initializationPromisesMap, dynamicConfigPromisesList, measurementIdToAppId, idOrNameOrParams, gtagParams);
            }
            else {
                // If SET, second arg must be params.
                gtagCore("set" /* SET */, idOrNameOrParams);
            }
        }
        catch (e) {
            logger.error(e);
        }
    }
    return gtagWrapper;
}
/**
 * Creates global gtag function or wraps existing one if found.
 * This wrapped function attaches Firebase instance ID (FID) to gtag 'config' and
 * 'event' calls that belong to the GAID associated with this Firebase instance.
 *
 * @param initializationPromisesMap Map of appIds to their initialization promises.
 * @param dynamicConfigPromisesList Array of dynamic config fetch promises.
 * @param measurementIdToAppId Map of GA measurementIDs to corresponding Firebase appId.
 * @param dataLayerName Name of global GA datalayer array.
 * @param gtagFunctionName Name of global gtag function ("gtag" if not user-specified).
 */
function wrapOrCreateGtag(initializationPromisesMap, dynamicConfigPromisesList, measurementIdToAppId, dataLayerName, gtagFunctionName) {
    // Create a basic core gtag function
    let gtagCore = function (..._args) {
        // Must push IArguments object, not an array.
        window[dataLayerName].push(arguments);
    };
    // Replace it with existing one if found
    if (window[gtagFunctionName] &&
        typeof window[gtagFunctionName] === 'function') {
        // @ts-ignore
        gtagCore = window[gtagFunctionName];
    }
    window[gtagFunctionName] = wrapGtag(gtagCore, initializationPromisesMap, dynamicConfigPromisesList, measurementIdToAppId);
    return {
        gtagCore,
        wrappedGtag: window[gtagFunctionName]
    };
}
/**
 * Returns first script tag in DOM matching our gtag url pattern.
 */
function findGtagScriptOnPage() {
    const scriptTags = window.document.getElementsByTagName('script');
    for (const tag of Object.values(scriptTags)) {
        if (tag.src && tag.src.includes(GTAG_URL)) {
            return tag;
        }
    }
    return null;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
const ERRORS = {
    ["already-exists" /* ALREADY_EXISTS */]: 'A Firebase Analytics instance with the appId {$id} ' +
        ' already exists. ' +
        'Only one Firebase Analytics instance can be created for each appId.',
    ["already-initialized" /* ALREADY_INITIALIZED */]: 'initializeAnalytics() cannot be called again with different options than those ' +
        'it was initially called with. It can be called again with the same options to ' +
        'return the existing instance, or getAnalytics() can be used ' +
        'to get a reference to the already-intialized instance.',
    ["already-initialized-settings" /* ALREADY_INITIALIZED_SETTINGS */]: 'Firebase Analytics has already been initialized.' +
        'settings() must be called before initializing any Analytics instance' +
        'or it will have no effect.',
    ["interop-component-reg-failed" /* INTEROP_COMPONENT_REG_FAILED */]: 'Firebase Analytics Interop Component failed to instantiate: {$reason}',
    ["invalid-analytics-context" /* INVALID_ANALYTICS_CONTEXT */]: 'Firebase Analytics is not supported in this environment. ' +
        'Wrap initialization of analytics in analytics.isSupported() ' +
        'to prevent initialization in unsupported environments. Details: {$errorInfo}',
    ["indexeddb-unavailable" /* INDEXEDDB_UNAVAILABLE */]: 'IndexedDB unavailable or restricted in this environment. ' +
        'Wrap initialization of analytics in analytics.isSupported() ' +
        'to prevent initialization in unsupported environments. Details: {$errorInfo}',
    ["fetch-throttle" /* FETCH_THROTTLE */]: 'The config fetch request timed out while in an exponential backoff state.' +
        ' Unix timestamp in milliseconds when fetch request throttling ends: {$throttleEndTimeMillis}.',
    ["config-fetch-failed" /* CONFIG_FETCH_FAILED */]: 'Dynamic config fetch failed: [{$httpStatus}] {$responseMessage}',
    ["no-api-key" /* NO_API_KEY */]: 'The "apiKey" field is empty in the local Firebase config. Firebase Analytics requires this field to' +
        'contain a valid API key.',
    ["no-app-id" /* NO_APP_ID */]: 'The "appId" field is empty in the local Firebase config. Firebase Analytics requires this field to' +
        'contain a valid app ID.'
};
const ERROR_FACTORY = new ErrorFactory('analytics', 'Analytics', ERRORS);

/**
 * @license
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Backoff factor for 503 errors, which we want to be conservative about
 * to avoid overloading servers. Each retry interval will be
 * BASE_INTERVAL_MILLIS * LONG_RETRY_FACTOR ^ retryCount, so the second one
 * will be ~30 seconds (with fuzzing).
 */
const LONG_RETRY_FACTOR = 30;
/**
 * Base wait interval to multiplied by backoffFactor^backoffCount.
 */
const BASE_INTERVAL_MILLIS = 1000;
/**
 * Stubbable retry data storage class.
 */
class RetryData {
    constructor(throttleMetadata = {}, intervalMillis = BASE_INTERVAL_MILLIS) {
        this.throttleMetadata = throttleMetadata;
        this.intervalMillis = intervalMillis;
    }
    getThrottleMetadata(appId) {
        return this.throttleMetadata[appId];
    }
    setThrottleMetadata(appId, metadata) {
        this.throttleMetadata[appId] = metadata;
    }
    deleteThrottleMetadata(appId) {
        delete this.throttleMetadata[appId];
    }
}
const defaultRetryData = new RetryData();
/**
 * Set GET request headers.
 * @param apiKey App API key.
 */
function getHeaders(apiKey) {
    return new Headers({
        Accept: 'application/json',
        'x-goog-api-key': apiKey
    });
}
/**
 * Fetches dynamic config from backend.
 * @param app Firebase app to fetch config for.
 */
async function fetchDynamicConfig(appFields) {
    var _a;
    const { appId, apiKey } = appFields;
    const request = {
        method: 'GET',
        headers: getHeaders(apiKey)
    };
    const appUrl = DYNAMIC_CONFIG_URL.replace('{app-id}', appId);
    const response = await fetch(appUrl, request);
    if (response.status !== 200 && response.status !== 304) {
        let errorMessage = '';
        try {
            // Try to get any error message text from server response.
            const jsonResponse = (await response.json());
            if ((_a = jsonResponse.error) === null || _a === void 0 ? void 0 : _a.message) {
                errorMessage = jsonResponse.error.message;
            }
        }
        catch (_ignored) { }
        throw ERROR_FACTORY.create("config-fetch-failed" /* CONFIG_FETCH_FAILED */, {
            httpStatus: response.status,
            responseMessage: errorMessage
        });
    }
    return response.json();
}
/**
 * Fetches dynamic config from backend, retrying if failed.
 * @param app Firebase app to fetch config for.
 */
async function fetchDynamicConfigWithRetry(app, 
// retryData and timeoutMillis are parameterized to allow passing a different value for testing.
retryData = defaultRetryData, timeoutMillis) {
    const { appId, apiKey, measurementId } = app.options;
    if (!appId) {
        throw ERROR_FACTORY.create("no-app-id" /* NO_APP_ID */);
    }
    if (!apiKey) {
        if (measurementId) {
            return {
                measurementId,
                appId
            };
        }
        throw ERROR_FACTORY.create("no-api-key" /* NO_API_KEY */);
    }
    const throttleMetadata = retryData.getThrottleMetadata(appId) || {
        backoffCount: 0,
        throttleEndTimeMillis: Date.now()
    };
    const signal = new AnalyticsAbortSignal();
    setTimeout(async () => {
        // Note a very low delay, eg < 10ms, can elapse before listeners are initialized.
        signal.abort();
    }, timeoutMillis !== undefined ? timeoutMillis : FETCH_TIMEOUT_MILLIS);
    return attemptFetchDynamicConfigWithRetry({ appId, apiKey, measurementId }, throttleMetadata, signal, retryData);
}
/**
 * Runs one retry attempt.
 * @param appFields Necessary app config fields.
 * @param throttleMetadata Ongoing metadata to determine throttling times.
 * @param signal Abort signal.
 */
async function attemptFetchDynamicConfigWithRetry(appFields, { throttleEndTimeMillis, backoffCount }, signal, retryData = defaultRetryData // for testing
) {
    const { appId, measurementId } = appFields;
    // Starts with a (potentially zero) timeout to support resumption from stored state.
    // Ensures the throttle end time is honored if the last attempt timed out.
    // Note the SDK will never make a request if the fetch timeout expires at this point.
    try {
        await setAbortableTimeout(signal, throttleEndTimeMillis);
    }
    catch (e) {
        if (measurementId) {
            logger.warn(`Timed out fetching this Firebase app's measurement ID from the server.` +
                ` Falling back to the measurement ID ${measurementId}` +
                ` provided in the "measurementId" field in the local Firebase config. [${e.message}]`);
            return { appId, measurementId };
        }
        throw e;
    }
    try {
        const response = await fetchDynamicConfig(appFields);
        // Note the SDK only clears throttle state if response is success or non-retriable.
        retryData.deleteThrottleMetadata(appId);
        return response;
    }
    catch (e) {
        if (!isRetriableError(e)) {
            retryData.deleteThrottleMetadata(appId);
            if (measurementId) {
                logger.warn(`Failed to fetch this Firebase app's measurement ID from the server.` +
                    ` Falling back to the measurement ID ${measurementId}` +
                    ` provided in the "measurementId" field in the local Firebase config. [${e.message}]`);
                return { appId, measurementId };
            }
            else {
                throw e;
            }
        }
        const backoffMillis = Number(e.customData.httpStatus) === 503
            ? calculateBackoffMillis(backoffCount, retryData.intervalMillis, LONG_RETRY_FACTOR)
            : calculateBackoffMillis(backoffCount, retryData.intervalMillis);
        // Increments backoff state.
        const throttleMetadata = {
            throttleEndTimeMillis: Date.now() + backoffMillis,
            backoffCount: backoffCount + 1
        };
        // Persists state.
        retryData.setThrottleMetadata(appId, throttleMetadata);
        logger.debug(`Calling attemptFetch again in ${backoffMillis} millis`);
        return attemptFetchDynamicConfigWithRetry(appFields, throttleMetadata, signal, retryData);
    }
}
/**
 * Supports waiting on a backoff by:
 *
 * <ul>
 *   <li>Promisifying setTimeout, so we can set a timeout in our Promise chain</li>
 *   <li>Listening on a signal bus for abort events, just like the Fetch API</li>
 *   <li>Failing in the same way the Fetch API fails, so timing out a live request and a throttled
 *       request appear the same.</li>
 * </ul>
 *
 * <p>Visible for testing.
 */
function setAbortableTimeout(signal, throttleEndTimeMillis) {
    return new Promise((resolve, reject) => {
        // Derives backoff from given end time, normalizing negative numbers to zero.
        const backoffMillis = Math.max(throttleEndTimeMillis - Date.now(), 0);
        const timeout = setTimeout(resolve, backoffMillis);
        // Adds listener, rather than sets onabort, because signal is a shared object.
        signal.addEventListener(() => {
            clearTimeout(timeout);
            // If the request completes before this timeout, the rejection has no effect.
            reject(ERROR_FACTORY.create("fetch-throttle" /* FETCH_THROTTLE */, {
                throttleEndTimeMillis
            }));
        });
    });
}
/**
 * Returns true if the {@link Error} indicates a fetch request may succeed later.
 */
function isRetriableError(e) {
    if (!(e instanceof FirebaseError) || !e.customData) {
        return false;
    }
    // Uses string index defined by ErrorData, which FirebaseError implements.
    const httpStatus = Number(e.customData['httpStatus']);
    return (httpStatus === 429 ||
        httpStatus === 500 ||
        httpStatus === 503 ||
        httpStatus === 504);
}
/**
 * Shims a minimal AbortSignal (copied from Remote Config).
 *
 * <p>AbortController's AbortSignal conveniently decouples fetch timeout logic from other aspects
 * of networking, such as retries. Firebase doesn't use AbortController enough to justify a
 * polyfill recommendation, like we do with the Fetch API, but this minimal shim can easily be
 * swapped out if/when we do.
 */
class AnalyticsAbortSignal {
    constructor() {
        this.listeners = [];
    }
    addEventListener(listener) {
        this.listeners.push(listener);
    }
    abort() {
        this.listeners.forEach(listener => listener());
    }
}

/**
 * @license
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
async function validateIndexedDB() {
    if (!isIndexedDBAvailable()) {
        logger.warn(ERROR_FACTORY.create("indexeddb-unavailable" /* INDEXEDDB_UNAVAILABLE */, {
            errorInfo: 'IndexedDB is not available in this environment.'
        }).message);
        return false;
    }
    else {
        try {
            await validateIndexedDBOpenable();
        }
        catch (e) {
            logger.warn(ERROR_FACTORY.create("indexeddb-unavailable" /* INDEXEDDB_UNAVAILABLE */, {
                errorInfo: e
            }).message);
            return false;
        }
    }
    return true;
}
/**
 * Initialize the analytics instance in gtag.js by calling config command with fid.
 *
 * NOTE: We combine analytics initialization and setting fid together because we want fid to be
 * part of the `page_view` event that's sent during the initialization
 * @param app Firebase app
 * @param gtagCore The gtag function that's not wrapped.
 * @param dynamicConfigPromisesList Array of all dynamic config promises.
 * @param measurementIdToAppId Maps measurementID to appID.
 * @param installations _FirebaseInstallationsInternal instance.
 *
 * @returns Measurement ID.
 */
async function _initializeAnalytics(app, dynamicConfigPromisesList, measurementIdToAppId, installations, gtagCore, dataLayerName, options) {
    var _a;
    const dynamicConfigPromise = fetchDynamicConfigWithRetry(app);
    // Once fetched, map measurementIds to appId, for ease of lookup in wrapped gtag function.
    dynamicConfigPromise
        .then(config => {
        measurementIdToAppId[config.measurementId] = config.appId;
        if (app.options.measurementId &&
            config.measurementId !== app.options.measurementId) {
            logger.warn(`The measurement ID in the local Firebase config (${app.options.measurementId})` +
                ` does not match the measurement ID fetched from the server (${config.measurementId}).` +
                ` To ensure analytics events are always sent to the correct Analytics property,` +
                ` update the` +
                ` measurement ID field in the local config or remove it from the local config.`);
        }
    })
        .catch(e => logger.error(e));
    // Add to list to track state of all dynamic config promises.
    dynamicConfigPromisesList.push(dynamicConfigPromise);
    const fidPromise = validateIndexedDB().then(envIsValid => {
        if (envIsValid) {
            return installations.getId();
        }
        else {
            return undefined;
        }
    });
    const [dynamicConfig, fid] = await Promise.all([
        dynamicConfigPromise,
        fidPromise
    ]);
    // Detect if user has already put the gtag <script> tag on this page.
    if (!findGtagScriptOnPage()) {
        insertScriptTag(dataLayerName, dynamicConfig.measurementId);
    }
    // This command initializes gtag.js and only needs to be called once for the entire web app,
    // but since it is idempotent, we can call it multiple times.
    // We keep it together with other initialization logic for better code structure.
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    gtagCore('js', new Date());
    // User config added first. We don't want users to accidentally overwrite
    // base Firebase config properties.
    const configProperties = (_a = options === null || options === void 0 ? void 0 : options.config) !== null && _a !== void 0 ? _a : {};
    // guard against developers accidentally setting properties with prefix `firebase_`
    configProperties[ORIGIN_KEY] = 'firebase';
    configProperties.update = true;
    if (fid != null) {
        configProperties[GA_FID_KEY] = fid;
    }
    // It should be the first config command called on this GA-ID
    // Initialize this GA-ID and set FID on it using the gtag config API.
    // Note: This will trigger a page_view event unless 'send_page_view' is set to false in
    // `configProperties`.
    gtagCore("config" /* CONFIG */, dynamicConfig.measurementId, configProperties);
    return dynamicConfig.measurementId;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Analytics Service class.
 */
class AnalyticsService {
    constructor(app) {
        this.app = app;
    }
    _delete() {
        delete initializationPromisesMap[this.app.options.appId];
        return Promise.resolve();
    }
}
/**
 * Maps appId to full initialization promise. Wrapped gtag calls must wait on
 * all or some of these, depending on the call's `send_to` param and the status
 * of the dynamic config fetches (see below).
 */
let initializationPromisesMap = {};
/**
 * List of dynamic config fetch promises. In certain cases, wrapped gtag calls
 * wait on all these to be complete in order to determine if it can selectively
 * wait for only certain initialization (FID) promises or if it must wait for all.
 */
let dynamicConfigPromisesList = [];
/**
 * Maps fetched measurementIds to appId. Populated when the app's dynamic config
 * fetch completes. If already populated, gtag config calls can use this to
 * selectively wait for only this app's initialization promise (FID) instead of all
 * initialization promises.
 */
const measurementIdToAppId = {};
/**
 * Name for window global data layer array used by GA: defaults to 'dataLayer'.
 */
let dataLayerName = 'dataLayer';
/**
 * Name for window global gtag function used by GA: defaults to 'gtag'.
 */
let gtagName = 'gtag';
/**
 * Reproduction of standard gtag function or reference to existing
 * gtag function on window object.
 */
let gtagCoreFunction;
/**
 * Wrapper around gtag function that ensures FID is sent with all
 * relevant event and config calls.
 */
let wrappedGtagFunction;
/**
 * Flag to ensure page initialization steps (creation or wrapping of
 * dataLayer and gtag script) are only run once per page load.
 */
let globalInitDone = false;
/**
 * Configures Firebase Analytics to use custom `gtag` or `dataLayer` names.
 * Intended to be used if `gtag.js` script has been installed on
 * this page independently of Firebase Analytics, and is using non-default
 * names for either the `gtag` function or for `dataLayer`.
 * Must be called before calling `getAnalytics()` or it won't
 * have any effect.
 *
 * @public
 *
 * @param options - Custom gtag and dataLayer names.
 */
function settings(options) {
    if (globalInitDone) {
        throw ERROR_FACTORY.create("already-initialized" /* ALREADY_INITIALIZED */);
    }
    if (options.dataLayerName) {
        dataLayerName = options.dataLayerName;
    }
    if (options.gtagName) {
        gtagName = options.gtagName;
    }
}
/**
 * Returns true if no environment mismatch is found.
 * If environment mismatches are found, throws an INVALID_ANALYTICS_CONTEXT
 * error that also lists details for each mismatch found.
 */
function warnOnBrowserContextMismatch() {
    const mismatchedEnvMessages = [];
    if (isBrowserExtension()) {
        mismatchedEnvMessages.push('This is a browser extension environment.');
    }
    if (!areCookiesEnabled()) {
        mismatchedEnvMessages.push('Cookies are not available.');
    }
    if (mismatchedEnvMessages.length > 0) {
        const details = mismatchedEnvMessages
            .map((message, index) => `(${index + 1}) ${message}`)
            .join(' ');
        const err = ERROR_FACTORY.create("invalid-analytics-context" /* INVALID_ANALYTICS_CONTEXT */, {
            errorInfo: details
        });
        logger.warn(err.message);
    }
}
/**
 * Analytics instance factory.
 * @internal
 */
function factory(app, installations, options) {
    warnOnBrowserContextMismatch();
    const appId = app.options.appId;
    if (!appId) {
        throw ERROR_FACTORY.create("no-app-id" /* NO_APP_ID */);
    }
    if (!app.options.apiKey) {
        if (app.options.measurementId) {
            logger.warn(`The "apiKey" field is empty in the local Firebase config. This is needed to fetch the latest` +
                ` measurement ID for this Firebase app. Falling back to the measurement ID ${app.options.measurementId}` +
                ` provided in the "measurementId" field in the local Firebase config.`);
        }
        else {
            throw ERROR_FACTORY.create("no-api-key" /* NO_API_KEY */);
        }
    }
    if (initializationPromisesMap[appId] != null) {
        throw ERROR_FACTORY.create("already-exists" /* ALREADY_EXISTS */, {
            id: appId
        });
    }
    if (!globalInitDone) {
        // Steps here should only be done once per page: creation or wrapping
        // of dataLayer and global gtag function.
        getOrCreateDataLayer(dataLayerName);
        const { wrappedGtag, gtagCore } = wrapOrCreateGtag(initializationPromisesMap, dynamicConfigPromisesList, measurementIdToAppId, dataLayerName, gtagName);
        wrappedGtagFunction = wrappedGtag;
        gtagCoreFunction = gtagCore;
        globalInitDone = true;
    }
    // Async but non-blocking.
    // This map reflects the completion state of all promises for each appId.
    initializationPromisesMap[appId] = _initializeAnalytics(app, dynamicConfigPromisesList, measurementIdToAppId, installations, gtagCoreFunction, dataLayerName, options);
    const analyticsInstance = new AnalyticsService(app);
    return analyticsInstance;
}

/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * Logs an analytics event through the Firebase SDK.
 *
 * @param gtagFunction Wrapped gtag function that waits for fid to be set before sending an event
 * @param eventName Google Analytics event name, choose from standard list or use a custom string.
 * @param eventParams Analytics event parameters.
 */
async function logEvent$1(gtagFunction, initializationPromise, eventName, eventParams, options) {
    if (options && options.global) {
        gtagFunction("event" /* EVENT */, eventName, eventParams);
        return;
    }
    else {
        const measurementId = await initializationPromise;
        const params = Object.assign(Object.assign({}, eventParams), { 'send_to': measurementId });
        gtagFunction("event" /* EVENT */, eventName, params);
    }
}
/**
 * Set screen_name parameter for this Google Analytics ID.
 *
 * @param gtagFunction Wrapped gtag function that waits for fid to be set before sending an event
 * @param screenName Screen name string to set.
 */
async function setCurrentScreen$1(gtagFunction, initializationPromise, screenName, options) {
    if (options && options.global) {
        gtagFunction("set" /* SET */, { 'screen_name': screenName });
        return Promise.resolve();
    }
    else {
        const measurementId = await initializationPromise;
        gtagFunction("config" /* CONFIG */, measurementId, {
            update: true,
            'screen_name': screenName
        });
    }
}
/**
 * Set user_id parameter for this Google Analytics ID.
 *
 * @param gtagFunction Wrapped gtag function that waits for fid to be set before sending an event
 * @param id User ID string to set
 */
async function setUserId$1(gtagFunction, initializationPromise, id, options) {
    if (options && options.global) {
        gtagFunction("set" /* SET */, { 'user_id': id });
        return Promise.resolve();
    }
    else {
        const measurementId = await initializationPromise;
        gtagFunction("config" /* CONFIG */, measurementId, {
            update: true,
            'user_id': id
        });
    }
}
/**
 * Set all other user properties other than user_id and screen_name.
 *
 * @param gtagFunction Wrapped gtag function that waits for fid to be set before sending an event
 * @param properties Map of user properties to set
 */
async function setUserProperties$1(gtagFunction, initializationPromise, properties, options) {
    if (options && options.global) {
        const flatProperties = {};
        for (const key of Object.keys(properties)) {
            // use dot notation for merge behavior in gtag.js
            flatProperties[`user_properties.${key}`] = properties[key];
        }
        gtagFunction("set" /* SET */, flatProperties);
        return Promise.resolve();
    }
    else {
        const measurementId = await initializationPromise;
        gtagFunction("config" /* CONFIG */, measurementId, {
            update: true,
            'user_properties': properties
        });
    }
}
/**
 * Set whether collection is enabled for this ID.
 *
 * @param enabled If true, collection is enabled for this ID.
 */
async function setAnalyticsCollectionEnabled$1(initializationPromise, enabled) {
    const measurementId = await initializationPromise;
    window[`ga-disable-${measurementId}`] = !enabled;
}

/* eslint-disable @typescript-eslint/no-explicit-any */
/**
 * Returns an {@link Analytics} instance for the given app.
 *
 * @public
 *
 * @param app - The {@link https://www.gstatic.com/firebasejs/9.8.1/firebase-app.js#FirebaseApp} to use.
 */
function getAnalytics(app = getApp()) {
    app = getModularInstance(app);
    // Dependencies
    const analyticsProvider = _getProvider(app, ANALYTICS_TYPE);
    if (analyticsProvider.isInitialized()) {
        return analyticsProvider.getImmediate();
    }
    return initializeAnalytics(app);
}
/**
 * Returns an {@link Analytics} instance for the given app.
 *
 * @public
 *
 * @param app - The {@link https://www.gstatic.com/firebasejs/9.8.1/firebase-app.js#FirebaseApp} to use.
 */
function initializeAnalytics(app, options = {}) {
    // Dependencies
    const analyticsProvider = _getProvider(app, ANALYTICS_TYPE);
    if (analyticsProvider.isInitialized()) {
        const existingInstance = analyticsProvider.getImmediate();
        if (deepEqual(options, analyticsProvider.getOptions())) {
            return existingInstance;
        }
        else {
            throw ERROR_FACTORY.create("already-initialized" /* ALREADY_INITIALIZED */);
        }
    }
    const analyticsInstance = analyticsProvider.initialize({ options });
    return analyticsInstance;
}
/**
 * This is a public static method provided to users that wraps four different checks:
 *
 * 1. Check if it's not a browser extension environment.
 * 2. Check if cookies are enabled in current browser.
 * 3. Check if IndexedDB is supported by the browser environment.
 * 4. Check if the current browser context is valid for using `IndexedDB.open()`.
 *
 * @public
 *
 */
async function isSupported() {
    if (isBrowserExtension()) {
        return false;
    }
    if (!areCookiesEnabled()) {
        return false;
    }
    if (!isIndexedDBAvailable()) {
        return false;
    }
    try {
        const isDBOpenable = await validateIndexedDBOpenable();
        return isDBOpenable;
    }
    catch (error) {
        return false;
    }
}
/**
 * Use gtag `config` command to set `screen_name`.
 *
 * @public
 *
 * @param analyticsInstance - The {@link Analytics} instance.
 * @param screenName - Screen name to set.
 */
function setCurrentScreen(analyticsInstance, screenName, options) {
    analyticsInstance = getModularInstance(analyticsInstance);
    setCurrentScreen$1(wrappedGtagFunction, initializationPromisesMap[analyticsInstance.app.options.appId], screenName, options).catch(e => logger.error(e));
}
/**
 * Use gtag `config` command to set `user_id`.
 *
 * @public
 *
 * @param analyticsInstance - The {@link Analytics} instance.
 * @param id - User ID to set.
 */
function setUserId(analyticsInstance, id, options) {
    analyticsInstance = getModularInstance(analyticsInstance);
    setUserId$1(wrappedGtagFunction, initializationPromisesMap[analyticsInstance.app.options.appId], id, options).catch(e => logger.error(e));
}
/**
 * Use gtag `config` command to set all params specified.
 *
 * @public
 */
function setUserProperties(analyticsInstance, properties, options) {
    analyticsInstance = getModularInstance(analyticsInstance);
    setUserProperties$1(wrappedGtagFunction, initializationPromisesMap[analyticsInstance.app.options.appId], properties, options).catch(e => logger.error(e));
}
/**
 * Sets whether Google Analytics collection is enabled for this app on this device.
 * Sets global `window['ga-disable-analyticsId'] = true;`
 *
 * @public
 *
 * @param analyticsInstance - The {@link Analytics} instance.
 * @param enabled - If true, enables collection, if false, disables it.
 */
function setAnalyticsCollectionEnabled(analyticsInstance, enabled) {
    analyticsInstance = getModularInstance(analyticsInstance);
    setAnalyticsCollectionEnabled$1(initializationPromisesMap[analyticsInstance.app.options.appId], enabled).catch(e => logger.error(e));
}
/**
 * Sends a Google Analytics event with given `eventParams`. This method
 * automatically associates this logged event with this Firebase web
 * app instance on this device.
 * List of official event parameters can be found in the gtag.js
 * reference documentation:
 * {@link https://developers.google.com/gtagjs/reference/ga4-events
 * | the GA4 reference documentation}.
 *
 * @public
 */
function logEvent(analyticsInstance, eventName, eventParams, options) {
    analyticsInstance = getModularInstance(analyticsInstance);
    logEvent$1(wrappedGtagFunction, initializationPromisesMap[analyticsInstance.app.options.appId], eventName, eventParams, options).catch(e => logger.error(e));
}

const name = "@firebase/analytics";
const version = "0.7.9";

/**
 * Firebase Analytics
 *
 * @packageDocumentation
 */
function registerAnalytics() {
    _registerComponent(new Component(ANALYTICS_TYPE, (container, { options: analyticsOptions }) => {
        // getImmediate for FirebaseApp will always succeed
        const app = container.getProvider('app').getImmediate();
        const installations = container
            .getProvider('installations-internal')
            .getImmediate();
        return factory(app, installations, analyticsOptions);
    }, "PUBLIC" /* PUBLIC */));
    _registerComponent(new Component('analytics-internal', internalFactory, "PRIVATE" /* PRIVATE */));
    registerVersion(name, version);
    // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation
    registerVersion(name, version, 'esm2017');
    function internalFactory(container) {
        try {
            const analytics = container.getProvider(ANALYTICS_TYPE).getImmediate();
            return {
                logEvent: (eventName, eventParams, options) => logEvent(analytics, eventName, eventParams, options)
            };
        }
        catch (e) {
            throw ERROR_FACTORY.create("interop-component-reg-failed" /* INTEROP_COMPONENT_REG_FAILED */, {
                reason: e
            });
        }
    }
}
registerAnalytics();

export { getAnalytics, initializeAnalytics, isSupported, logEvent, setAnalyticsCollectionEnabled, setCurrentScreen, setUserId, setUserProperties, settings };

//# sourceMappingURL=firebase-analytics.js.map