FM / dist

/var/www/greso.tech/server/nsm/node_modules/@firebase/database/dist/

/var/www/greso.tech/server/nsm/node_modules/@firebase/database/dist

Name	Size	Mode	Actions
node-esm/	-	0755	rm
src/	-	0755	rm
test/	-	0755	rm
index.cjs.js	563228	0644	edit dl rm
index.cjs.js.map	1012524	0644	edit dl rm
index.esm5.js	599954	0644	edit dl rm
index.esm5.js.map	1041618	0644	edit dl rm
index.esm2017.js	561539	0644	edit dl rm
index.esm2017.js.map	1011798	0644	edit dl rm
index.node.cjs.js	602829	0644	edit dl rm
index.node.cjs.js.map	1043060	0644	edit dl rm
index.standalone.js	600125	0644	edit dl rm
index.standalone.js.map	1039321	0644	edit dl rm
internal.d.ts	123392	0644	edit dl rm
private.d.ts	119766	0644	edit dl rm
public.d.ts	70372	0644	edit dl rm

Edit: /var/www/greso.tech/server/nsm/node_modules/@firebase/database/dist/index.standalone.js (600125B)

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var Websocket = require('faye-websocket');
var util = require('@firebase/util');
var tslib = require('tslib');
var logger$1 = require('@firebase/logger');

function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

var Websocket__default = /*#__PURE__*/_interopDefaultLegacy(Websocket);

/**
 * @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 semver (www.semver.org) version of the SDK. */
var SDK_VERSION = '';
/**
 * SDK_VERSION should be set before any database instance is created
 * @internal
 */
function setSDKVersion(version) {
    SDK_VERSION = version;
}

/**
 * @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.
 */
var RECONNECT_MIN_DELAY = 1000;
var RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)
var RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)
var RECONNECT_DELAY_MULTIPLIER = 1.3;
var RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.
var SERVER_KILL_INTERRUPT_REASON = 'server_kill';
// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.
var INVALID_TOKEN_THRESHOLD = 3;
/**
 * Firebase connection.  Abstracts wire protocol and handles reconnecting.
 *
 * NOTE: All JSON objects sent to the realtime connection must have property names enclosed
 * in quotes to make sure the closure compiler does not minify them.
 */
var PersistentConnection = /** @class */ (function (_super) {
    tslib.__extends(PersistentConnection, _super);
    /**
     * @param repoInfo_ - Data about the namespace we are connecting to
     * @param applicationId_ - The Firebase App ID for this project
     * @param onDataUpdate_ - A callback for new data from the server
     */
    function PersistentConnection(repoInfo_, applicationId_, onDataUpdate_, onConnectStatus_, onServerInfoUpdate_, authTokenProvider_, appCheckTokenProvider_, authOverride_) {
        var _this = _super.call(this) || this;
        _this.repoInfo_ = repoInfo_;
        _this.applicationId_ = applicationId_;
        _this.onDataUpdate_ = onDataUpdate_;
        _this.onConnectStatus_ = onConnectStatus_;
        _this.onServerInfoUpdate_ = onServerInfoUpdate_;
        _this.authTokenProvider_ = authTokenProvider_;
        _this.appCheckTokenProvider_ = appCheckTokenProvider_;
        _this.authOverride_ = authOverride_;
        // Used for diagnostic logging.
        _this.id = PersistentConnection.nextPersistentConnectionId_++;
        _this.log_ = logWrapper('p:' + _this.id + ':');
        _this.interruptReasons_ = {};
        _this.listens = new Map();
        _this.outstandingPuts_ = [];
        _this.outstandingGets_ = [];
        _this.outstandingPutCount_ = 0;
        _this.outstandingGetCount_ = 0;
        _this.onDisconnectRequestQueue_ = [];
        _this.connected_ = false;
        _this.reconnectDelay_ = RECONNECT_MIN_DELAY;
        _this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;
        _this.securityDebugCallback_ = null;
        _this.lastSessionId = null;
        _this.establishConnectionTimer_ = null;
        _this.visible_ = false;
        // Before we get connected, we keep a queue of pending messages to send.
        _this.requestCBHash_ = {};
        _this.requestNumber_ = 0;
        _this.realtime_ = null;
        _this.authToken_ = null;
        _this.appCheckToken_ = null;
        _this.forceTokenRefresh_ = false;
        _this.invalidAuthTokenCount_ = 0;
        _this.invalidAppCheckTokenCount_ = 0;
        _this.firstConnection_ = true;
        _this.lastConnectionAttemptTime_ = null;
        _this.lastConnectionEstablishedTime_ = null;
        if (authOverride_ && !util.isNodeSdk()) {
            throw new Error('Auth override specified in options, but not supported on non Node.js platforms');
        }
        VisibilityMonitor.getInstance().on('visible', _this.onVisible_, _this);
        if (repoInfo_.host.indexOf('fblocal') === -1) {
            OnlineMonitor.getInstance().on('online', _this.onOnline_, _this);
        }
        return _this;
    }
    PersistentConnection.prototype.sendRequest = function (action, body, onResponse) {
        var curReqNum = ++this.requestNumber_;
        var msg = { r: curReqNum, a: action, b: body };
        this.log_(util.stringify(msg));
        util.assert(this.connected_, "sendRequest call when we're not connected not allowed.");
        this.realtime_.sendRequest(msg);
        if (onResponse) {
            this.requestCBHash_[curReqNum] = onResponse;
        }
    };
    PersistentConnection.prototype.get = function (query) {
        this.initConnection_();
        var deferred = new util.Deferred();
        var request = {
            p: query._path.toString(),
            q: query._queryObject
        };
        var outstandingGet = {
            action: 'g',
            request: request,
            onComplete: function (message) {
                var payload = message['d'];
                if (message['s'] === 'ok') {
                    deferred.resolve(payload);
                }
                else {
                    deferred.reject(payload);
                }
            }
        };
        this.outstandingGets_.push(outstandingGet);
        this.outstandingGetCount_++;
        var index = this.outstandingGets_.length - 1;
        if (this.connected_) {
            this.sendGet_(index);
        }
        return deferred.promise;
    };
    PersistentConnection.prototype.listen = function (query, currentHashFn, tag, onComplete) {
        this.initConnection_();
        var queryId = query._queryIdentifier;
        var pathString = query._path.toString();
        this.log_('Listen called for ' + pathString + ' ' + queryId);
        if (!this.listens.has(pathString)) {
            this.listens.set(pathString, new Map());
        }
        util.assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'listen() called for non-default but complete query');
        util.assert(!this.listens.get(pathString).has(queryId), "listen() called twice for same path/queryId.");
        var listenSpec = {
            onComplete: onComplete,
            hashFn: currentHashFn,
            query: query,
            tag: tag
        };
        this.listens.get(pathString).set(queryId, listenSpec);
        if (this.connected_) {
            this.sendListen_(listenSpec);
        }
    };
    PersistentConnection.prototype.sendGet_ = function (index) {
        var _this = this;
        var get = this.outstandingGets_[index];
        this.sendRequest('g', get.request, function (message) {
            delete _this.outstandingGets_[index];
            _this.outstandingGetCount_--;
            if (_this.outstandingGetCount_ === 0) {
                _this.outstandingGets_ = [];
            }
            if (get.onComplete) {
                get.onComplete(message);
            }
        });
    };
    PersistentConnection.prototype.sendListen_ = function (listenSpec) {
        var _this = this;
        var query = listenSpec.query;
        var pathString = query._path.toString();
        var queryId = query._queryIdentifier;
        this.log_('Listen on ' + pathString + ' for ' + queryId);
        var req = { /*path*/ p: pathString };
        var action = 'q';
        // Only bother to send query if it's non-default.
        if (listenSpec.tag) {
            req['q'] = query._queryObject;
            req['t'] = listenSpec.tag;
        }
        req[ /*hash*/'h'] = listenSpec.hashFn();
        this.sendRequest(action, req, function (message) {
            var payload = message[ /*data*/'d'];
            var status = message[ /*status*/'s'];
            // print warnings in any case...
            PersistentConnection.warnOnListenWarnings_(payload, query);
            var currentListenSpec = _this.listens.get(pathString) &&
                _this.listens.get(pathString).get(queryId);
            // only trigger actions if the listen hasn't been removed and readded
            if (currentListenSpec === listenSpec) {
                _this.log_('listen response', message);
                if (status !== 'ok') {
                    _this.removeListen_(pathString, queryId);
                }
                if (listenSpec.onComplete) {
                    listenSpec.onComplete(status, payload);
                }
            }
        });
    };
    PersistentConnection.warnOnListenWarnings_ = function (payload, query) {
        if (payload && typeof payload === 'object' && util.contains(payload, 'w')) {
            // eslint-disable-next-line @typescript-eslint/no-explicit-any
            var warnings = util.safeGet(payload, 'w');
            if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {
                var indexSpec = '".indexOn": "' + query._queryParams.getIndex().toString() + '"';
                var indexPath = query._path.toString();
                warn("Using an unspecified index. Your data will be downloaded and " +
                    "filtered on the client. Consider adding ".concat(indexSpec, " at ") +
                    "".concat(indexPath, " to your security rules for better performance."));
            }
        }
    };
    PersistentConnection.prototype.refreshAuthToken = function (token) {
        this.authToken_ = token;
        this.log_('Auth token refreshed');
        if (this.authToken_) {
            this.tryAuth();
        }
        else {
            //If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete
            //the credential so we dont become authenticated next time we connect.
            if (this.connected_) {
                this.sendRequest('unauth', {}, function () { });
            }
        }
        this.reduceReconnectDelayIfAdminCredential_(token);
    };
    PersistentConnection.prototype.reduceReconnectDelayIfAdminCredential_ = function (credential) {
        // NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).
        // Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.
        var isFirebaseSecret = credential && credential.length === 40;
        if (isFirebaseSecret || util.isAdmin(credential)) {
            this.log_('Admin auth credential detected.  Reducing max reconnect time.');
            this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
        }
    };
    PersistentConnection.prototype.refreshAppCheckToken = function (token) {
        this.appCheckToken_ = token;
        this.log_('App check token refreshed');
        if (this.appCheckToken_) {
            this.tryAppCheck();
        }
        else {
            //If we're connected we want to let the server know to unauthenticate us.
            //If we're not connected, simply delete the credential so we dont become
            // authenticated next time we connect.
            if (this.connected_) {
                this.sendRequest('unappeck', {}, function () { });
            }
        }
    };
    /**
     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like
     * a auth revoked (the connection is closed).
     */
    PersistentConnection.prototype.tryAuth = function () {
        var _this = this;
        if (this.connected_ && this.authToken_) {
            var token_1 = this.authToken_;
            var authMethod = util.isValidFormat(token_1) ? 'auth' : 'gauth';
            var requestData = { cred: token_1 };
            if (this.authOverride_ === null) {
                requestData['noauth'] = true;
            }
            else if (typeof this.authOverride_ === 'object') {
                requestData['authvar'] = this.authOverride_;
            }
            this.sendRequest(authMethod, requestData, function (res) {
                var status = res[ /*status*/'s'];
                var data = res[ /*data*/'d'] || 'error';
                if (_this.authToken_ === token_1) {
                    if (status === 'ok') {
                        _this.invalidAuthTokenCount_ = 0;
                    }
                    else {
                        // Triggers reconnect and force refresh for auth token
                        _this.onAuthRevoked_(status, data);
                    }
                }
            });
        }
    };
    /**
     * Attempts to authenticate with the given token. If the authentication
     * attempt fails, it's triggered like the token was revoked (the connection is
     * closed).
     */
    PersistentConnection.prototype.tryAppCheck = function () {
        var _this = this;
        if (this.connected_ && this.appCheckToken_) {
            this.sendRequest('appcheck', { 'token': this.appCheckToken_ }, function (res) {
                var status = res[ /*status*/'s'];
                var data = res[ /*data*/'d'] || 'error';
                if (status === 'ok') {
                    _this.invalidAppCheckTokenCount_ = 0;
                }
                else {
                    _this.onAppCheckRevoked_(status, data);
                }
            });
        }
    };
    /**
     * @inheritDoc
     */
    PersistentConnection.prototype.unlisten = function (query, tag) {
        var pathString = query._path.toString();
        var queryId = query._queryIdentifier;
        this.log_('Unlisten called for ' + pathString + ' ' + queryId);
        util.assert(query._queryParams.isDefault() || !query._queryParams.loadsAllData(), 'unlisten() called for non-default but complete query');
        var listen = this.removeListen_(pathString, queryId);
        if (listen && this.connected_) {
            this.sendUnlisten_(pathString, queryId, query._queryObject, tag);
        }
    };
    PersistentConnection.prototype.sendUnlisten_ = function (pathString, queryId, queryObj, tag) {
        this.log_('Unlisten on ' + pathString + ' for ' + queryId);
        var req = { /*path*/ p: pathString };
        var action = 'n';
        // Only bother sending queryId if it's non-default.
        if (tag) {
            req['q'] = queryObj;
            req['t'] = tag;
        }
        this.sendRequest(action, req);
    };
    PersistentConnection.prototype.onDisconnectPut = function (pathString, data, onComplete) {
        this.initConnection_();
        if (this.connected_) {
            this.sendOnDisconnect_('o', pathString, data, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'o',
                data: data,
                onComplete: onComplete
            });
        }
    };
    PersistentConnection.prototype.onDisconnectMerge = function (pathString, data, onComplete) {
        this.initConnection_();
        if (this.connected_) {
            this.sendOnDisconnect_('om', pathString, data, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'om',
                data: data,
                onComplete: onComplete
            });
        }
    };
    PersistentConnection.prototype.onDisconnectCancel = function (pathString, onComplete) {
        this.initConnection_();
        if (this.connected_) {
            this.sendOnDisconnect_('oc', pathString, null, onComplete);
        }
        else {
            this.onDisconnectRequestQueue_.push({
                pathString: pathString,
                action: 'oc',
                data: null,
                onComplete: onComplete
            });
        }
    };
    PersistentConnection.prototype.sendOnDisconnect_ = function (action, pathString, data, onComplete) {
        var request = { /*path*/ p: pathString, /*data*/ d: data };
        this.log_('onDisconnect ' + action, request);
        this.sendRequest(action, request, function (response) {
            if (onComplete) {
                setTimeout(function () {
                    onComplete(response[ /*status*/'s'], response[ /* data */'d']);
                }, Math.floor(0));
            }
        });
    };
    PersistentConnection.prototype.put = function (pathString, data, onComplete, hash) {
        this.putInternal('p', pathString, data, onComplete, hash);
    };
    PersistentConnection.prototype.merge = function (pathString, data, onComplete, hash) {
        this.putInternal('m', pathString, data, onComplete, hash);
    };
    PersistentConnection.prototype.putInternal = function (action, pathString, data, onComplete, hash) {
        this.initConnection_();
        var request = {
            /*path*/ p: pathString,
            /*data*/ d: data
        };
        if (hash !== undefined) {
            request[ /*hash*/'h'] = hash;
        }
        // TODO: Only keep track of the most recent put for a given path?
        this.outstandingPuts_.push({
            action: action,
            request: request,
            onComplete: onComplete
        });
        this.outstandingPutCount_++;
        var index = this.outstandingPuts_.length - 1;
        if (this.connected_) {
            this.sendPut_(index);
        }
        else {
            this.log_('Buffering put: ' + pathString);
        }
    };
    PersistentConnection.prototype.sendPut_ = function (index) {
        var _this = this;
        var action = this.outstandingPuts_[index].action;
        var request = this.outstandingPuts_[index].request;
        var onComplete = this.outstandingPuts_[index].onComplete;
        this.outstandingPuts_[index].queued = this.connected_;
        this.sendRequest(action, request, function (message) {
            _this.log_(action + ' response', message);
            delete _this.outstandingPuts_[index];
            _this.outstandingPutCount_--;
            // Clean up array occasionally.
            if (_this.outstandingPutCount_ === 0) {
                _this.outstandingPuts_ = [];
            }
            if (onComplete) {
                onComplete(message[ /*status*/'s'], message[ /* data */'d']);
            }
        });
    };
    PersistentConnection.prototype.reportStats = function (stats) {
        var _this = this;
        // If we're not connected, we just drop the stats.
        if (this.connected_) {
            var request = { /*counters*/ c: stats };
            this.log_('reportStats', request);
            this.sendRequest(/*stats*/ 's', request, function (result) {
                var status = result[ /*status*/'s'];
                if (status !== 'ok') {
                    var errorReason = result[ /* data */'d'];
                    _this.log_('reportStats', 'Error sending stats: ' + errorReason);
                }
            });
        }
    };
    PersistentConnection.prototype.onDataMessage_ = function (message) {
        if ('r' in message) {
            // this is a response
            this.log_('from server: ' + util.stringify(message));
            var reqNum = message['r'];
            var onResponse = this.requestCBHash_[reqNum];
            if (onResponse) {
                delete this.requestCBHash_[reqNum];
                onResponse(message[ /*body*/'b']);
            }
        }
        else if ('error' in message) {
            throw 'A server-side error has occurred: ' + message['error'];
        }
        else if ('a' in message) {
            // a and b are action and body, respectively
            this.onDataPush_(message['a'], message['b']);
        }
    };
    PersistentConnection.prototype.onDataPush_ = function (action, body) {
        this.log_('handleServerMessage', action, body);
        if (action === 'd') {
            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], 
            /*isMerge*/ false, body['t']);
        }
        else if (action === 'm') {
            this.onDataUpdate_(body[ /*path*/'p'], body[ /*data*/'d'], 
            /*isMerge=*/ true, body['t']);
        }
        else if (action === 'c') {
            this.onListenRevoked_(body[ /*path*/'p'], body[ /*query*/'q']);
        }
        else if (action === 'ac') {
            this.onAuthRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);
        }
        else if (action === 'apc') {
            this.onAppCheckRevoked_(body[ /*status code*/'s'], body[ /* explanation */'d']);
        }
        else if (action === 'sd') {
            this.onSecurityDebugPacket_(body);
        }
        else {
            error('Unrecognized action received from server: ' +
                util.stringify(action) +
                '\nAre you using the latest client?');
        }
    };
    PersistentConnection.prototype.onReady_ = function (timestamp, sessionId) {
        this.log_('connection ready');
        this.connected_ = true;
        this.lastConnectionEstablishedTime_ = new Date().getTime();
        this.handleTimestamp_(timestamp);
        this.lastSessionId = sessionId;
        if (this.firstConnection_) {
            this.sendConnectStats_();
        }
        this.restoreState_();
        this.firstConnection_ = false;
        this.onConnectStatus_(true);
    };
    PersistentConnection.prototype.scheduleConnect_ = function (timeout) {
        var _this = this;
        util.assert(!this.realtime_, "Scheduling a connect when we're already connected/ing?");
        if (this.establishConnectionTimer_) {
            clearTimeout(this.establishConnectionTimer_);
        }
        // NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating "Security Error" in
        // Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).
        this.establishConnectionTimer_ = setTimeout(function () {
            _this.establishConnectionTimer_ = null;
            _this.establishConnection_();
            // eslint-disable-next-line @typescript-eslint/no-explicit-any
        }, Math.floor(timeout));
    };
    PersistentConnection.prototype.initConnection_ = function () {
        if (!this.realtime_ && this.firstConnection_) {
            this.scheduleConnect_(0);
        }
    };
    PersistentConnection.prototype.onVisible_ = function (visible) {
        // NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.
        if (visible &&
            !this.visible_ &&
            this.reconnectDelay_ === this.maxReconnectDelay_) {
            this.log_('Window became visible.  Reducing delay.');
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
        this.visible_ = visible;
    };
    PersistentConnection.prototype.onOnline_ = function (online) {
        if (online) {
            this.log_('Browser went online.');
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
        else {
            this.log_('Browser went offline.  Killing connection.');
            if (this.realtime_) {
                this.realtime_.close();
            }
        }
    };
    PersistentConnection.prototype.onRealtimeDisconnect_ = function () {
        this.log_('data client disconnected');
        this.connected_ = false;
        this.realtime_ = null;
        // Since we don't know if our sent transactions succeeded or not, we need to cancel them.
        this.cancelSentTransactions_();
        // Clear out the pending requests.
        this.requestCBHash_ = {};
        if (this.shouldReconnect_()) {
            if (!this.visible_) {
                this.log_("Window isn't visible.  Delaying reconnect.");
                this.reconnectDelay_ = this.maxReconnectDelay_;
                this.lastConnectionAttemptTime_ = new Date().getTime();
            }
            else if (this.lastConnectionEstablishedTime_) {
                // If we've been connected long enough, reset reconnect delay to minimum.
                var timeSinceLastConnectSucceeded = new Date().getTime() - this.lastConnectionEstablishedTime_;
                if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT) {
                    this.reconnectDelay_ = RECONNECT_MIN_DELAY;
                }
                this.lastConnectionEstablishedTime_ = null;
            }
            var timeSinceLastConnectAttempt = new Date().getTime() - this.lastConnectionAttemptTime_;
            var reconnectDelay = Math.max(0, this.reconnectDelay_ - timeSinceLastConnectAttempt);
            reconnectDelay = Math.random() * reconnectDelay;
            this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');
            this.scheduleConnect_(reconnectDelay);
            // Adjust reconnect delay for next time.
            this.reconnectDelay_ = Math.min(this.maxReconnectDelay_, this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER);
        }
        this.onConnectStatus_(false);
    };
    PersistentConnection.prototype.establishConnection_ = function () {
        return tslib.__awaiter(this, void 0, void 0, function () {
            var onDataMessage, onReady, onDisconnect_1, connId, lastSessionId, canceled_1, connection_1, closeFn, sendRequestFn, forceRefresh, _a, authToken, appCheckToken, error_1;
            var _this = this;
            return tslib.__generator(this, function (_b) {
                switch (_b.label) {
                    case 0:
                        if (!this.shouldReconnect_()) return [3 /*break*/, 4];
                        this.log_('Making a connection attempt');
                        this.lastConnectionAttemptTime_ = new Date().getTime();
                        this.lastConnectionEstablishedTime_ = null;
                        onDataMessage = this.onDataMessage_.bind(this);
                        onReady = this.onReady_.bind(this);
                        onDisconnect_1 = this.onRealtimeDisconnect_.bind(this);
                        connId = this.id + ':' + PersistentConnection.nextConnectionId_++;
                        lastSessionId = this.lastSessionId;
                        canceled_1 = false;
                        connection_1 = null;
                        closeFn = function () {
                            if (connection_1) {
                                connection_1.close();
                            }
                            else {
                                canceled_1 = true;
                                onDisconnect_1();
                            }
                        };
                        sendRequestFn = function (msg) {
                            util.assert(connection_1, "sendRequest call when we're not connected not allowed.");
                            connection_1.sendRequest(msg);
                        };
                        this.realtime_ = {
                            close: closeFn,
                            sendRequest: sendRequestFn
                        };
                        forceRefresh = this.forceTokenRefresh_;
                        this.forceTokenRefresh_ = false;
                        _b.label = 1;
                    case 1:
                        _b.trys.push([1, 3, , 4]);
                        return [4 /*yield*/, Promise.all([
                                this.authTokenProvider_.getToken(forceRefresh),
                                this.appCheckTokenProvider_.getToken(forceRefresh)
                            ])];
                    case 2:
                        _a = tslib.__read.apply(void 0, [_b.sent(), 2]), authToken = _a[0], appCheckToken = _a[1];
                        if (!canceled_1) {
                            log('getToken() completed. Creating connection.');
                            this.authToken_ = authToken && authToken.accessToken;
                            this.appCheckToken_ = appCheckToken && appCheckToken.token;
                            connection_1 = new Connection(connId, this.repoInfo_, this.applicationId_, this.appCheckToken_, this.authToken_, onDataMessage, onReady, onDisconnect_1, 
                            /* onKill= */ function (reason) {
                                warn(reason + ' (' + _this.repoInfo_.toString() + ')');
                                _this.interrupt(SERVER_KILL_INTERRUPT_REASON);
                            }, lastSessionId);
                        }
                        else {
                            log('getToken() completed but was canceled');
                        }
                        return [3 /*break*/, 4];
                    case 3:
                        error_1 = _b.sent();
                        this.log_('Failed to get token: ' + error_1);
                        if (!canceled_1) {
                            if (this.repoInfo_.nodeAdmin) {
                                // This may be a critical error for the Admin Node.js SDK, so log a warning.
                                // But getToken() may also just have temporarily failed, so we still want to
                                // continue retrying.
                                warn(error_1);
                            }
                            closeFn();
                        }
                        return [3 /*break*/, 4];
                    case 4: return [2 /*return*/];
                }
            });
        });
    };
    PersistentConnection.prototype.interrupt = function (reason) {
        log('Interrupting connection for reason: ' + reason);
        this.interruptReasons_[reason] = true;
        if (this.realtime_) {
            this.realtime_.close();
        }
        else {
            if (this.establishConnectionTimer_) {
                clearTimeout(this.establishConnectionTimer_);
                this.establishConnectionTimer_ = null;
            }
            if (this.connected_) {
                this.onRealtimeDisconnect_();
            }
        }
    };
    PersistentConnection.prototype.resume = function (reason) {
        log('Resuming connection for reason: ' + reason);
        delete this.interruptReasons_[reason];
        if (util.isEmpty(this.interruptReasons_)) {
            this.reconnectDelay_ = RECONNECT_MIN_DELAY;
            if (!this.realtime_) {
                this.scheduleConnect_(0);
            }
        }
    };
    PersistentConnection.prototype.handleTimestamp_ = function (timestamp) {
        var delta = timestamp - new Date().getTime();
        this.onServerInfoUpdate_({ serverTimeOffset: delta });
    };
    PersistentConnection.prototype.cancelSentTransactions_ = function () {
        for (var i = 0; i < this.outstandingPuts_.length; i++) {
            var put = this.outstandingPuts_[i];
            if (put && /*hash*/ 'h' in put.request && put.queued) {
                if (put.onComplete) {
                    put.onComplete('disconnect');
                }
                delete this.outstandingPuts_[i];
                this.outstandingPutCount_--;
            }
        }
        // Clean up array occasionally.
        if (this.outstandingPutCount_ === 0) {
            this.outstandingPuts_ = [];
        }
    };
    PersistentConnection.prototype.onListenRevoked_ = function (pathString, query) {
        // Remove the listen and manufacture a "permission_denied" error for the failed listen.
        var queryId;
        if (!query) {
            queryId = 'default';
        }
        else {
            queryId = query.map(function (q) { return ObjectToUniqueKey(q); }).join('$');
        }
        var listen = this.removeListen_(pathString, queryId);
        if (listen && listen.onComplete) {
            listen.onComplete('permission_denied');
        }
    };
    PersistentConnection.prototype.removeListen_ = function (pathString, queryId) {
        var normalizedPathString = new Path(pathString).toString(); // normalize path.
        var listen;
        if (this.listens.has(normalizedPathString)) {
            var map = this.listens.get(normalizedPathString);
            listen = map.get(queryId);
            map.delete(queryId);
            if (map.size === 0) {
                this.listens.delete(normalizedPathString);
            }
        }
        else {
            // all listens for this path has already been removed
            listen = undefined;
        }
        return listen;
    };
    PersistentConnection.prototype.onAuthRevoked_ = function (statusCode, explanation) {
        log('Auth token revoked: ' + statusCode + '/' + explanation);
        this.authToken_ = null;
        this.forceTokenRefresh_ = true;
        this.realtime_.close();
        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {
            // We'll wait a couple times before logging the warning / increasing the
            // retry period since oauth tokens will report as "invalid" if they're
            // just expired. Plus there may be transient issues that resolve themselves.
            this.invalidAuthTokenCount_++;
            if (this.invalidAuthTokenCount_ >= INVALID_TOKEN_THRESHOLD) {
                // Set a long reconnect delay because recovery is unlikely
                this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;
                // Notify the auth token provider that the token is invalid, which will log
                // a warning
                this.authTokenProvider_.notifyForInvalidToken();
            }
        }
    };
    PersistentConnection.prototype.onAppCheckRevoked_ = function (statusCode, explanation) {
        log('App check token revoked: ' + statusCode + '/' + explanation);
        this.appCheckToken_ = null;
        this.forceTokenRefresh_ = true;
        // Note: We don't close the connection as the developer may not have
        // enforcement enabled. The backend closes connections with enforcements.
        if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {
            // We'll wait a couple times before logging the warning / increasing the
            // retry period since oauth tokens will report as "invalid" if they're
            // just expired. Plus there may be transient issues that resolve themselves.
            this.invalidAppCheckTokenCount_++;
            if (this.invalidAppCheckTokenCount_ >= INVALID_TOKEN_THRESHOLD) {
                this.appCheckTokenProvider_.notifyForInvalidToken();
            }
        }
    };
    PersistentConnection.prototype.onSecurityDebugPacket_ = function (body) {
        if (this.securityDebugCallback_) {
            this.securityDebugCallback_(body);
        }
        else {
            if ('msg' in body) {
                console.log('FIREBASE: ' + body['msg'].replace('\n', '\nFIREBASE: '));
            }
        }
    };
    PersistentConnection.prototype.restoreState_ = function () {
        var e_1, _a, e_2, _b;
        //Re-authenticate ourselves if we have a credential stored.
        this.tryAuth();
        this.tryAppCheck();
        try {
            // Puts depend on having received the corresponding data update from the server before they complete, so we must
            // make sure to send listens before puts.
            for (var _c = tslib.__values(this.listens.values()), _d = _c.next(); !_d.done; _d = _c.next()) {
                var queries = _d.value;
                try {
                    for (var _e = (e_2 = void 0, tslib.__values(queries.values())), _f = _e.next(); !_f.done; _f = _e.next()) {
                        var listenSpec = _f.value;
                        this.sendListen_(listenSpec);
                    }
                }
                catch (e_2_1) { e_2 = { error: e_2_1 }; }
                finally {
                    try {
                        if (_f && !_f.done && (_b = _e.return)) _b.call(_e);
                    }
                    finally { if (e_2) throw e_2.error; }
                }
            }
        }
        catch (e_1_1) { e_1 = { error: e_1_1 }; }
        finally {
            try {
                if (_d && !_d.done && (_a = _c.return)) _a.call(_c);
            }
            finally { if (e_1) throw e_1.error; }
        }
        for (var i = 0; i < this.outstandingPuts_.length; i++) {
            if (this.outstandingPuts_[i]) {
                this.sendPut_(i);
            }
        }
        while (this.onDisconnectRequestQueue_.length) {
            var request = this.onDisconnectRequestQueue_.shift();
            this.sendOnDisconnect_(request.action, request.pathString, request.data, request.onComplete);
        }
        for (var i = 0; i < this.outstandingGets_.length; i++) {
            if (this.outstandingGets_[i]) {
                this.sendGet_(i);
            }
        }
    };
    /**
     * Sends client stats for first connection
     */
    PersistentConnection.prototype.sendConnectStats_ = function () {
        var stats = {};
        var clientName = 'js';
        if (util.isNodeSdk()) {
            if (this.repoInfo_.nodeAdmin) {
                clientName = 'admin_node';
            }
            else {
                clientName = 'node';
            }
        }
        stats['sdk.' + clientName + '.' + SDK_VERSION.replace(/\./g, '-')] = 1;
        if (util.isMobileCordova()) {
            stats['framework.cordova'] = 1;
        }
        else if (util.isReactNative()) {
            stats['framework.reactnative'] = 1;
        }
        this.reportStats(stats);
    };
    PersistentConnection.prototype.shouldReconnect_ = function () {
        var online = OnlineMonitor.getInstance().currentlyOnline();
        return util.isEmpty(this.interruptReasons_) && online;
    };
    PersistentConnection.nextPersistentConnectionId_ = 0;
    /**
     * Counter for number of connections created. Mainly used for tagging in the logs
     */
    PersistentConnection.nextConnectionId_ = 0;
    return PersistentConnection;
}(ServerActions));

/**
 * @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.
 */
var INTERRUPT_REASON = 'repo_interrupt';
/**
 * If a transaction does not succeed after 25 retries, we abort it. Among other
 * things this ensure that if there's ever a bug causing a mismatch between
 * client / server hashes for some data, we won't retry indefinitely.
 */
var MAX_TRANSACTION_RETRIES = 25;
/**
 * A connection to a single data repository.
 */
var Repo = /** @class */ (function () {
    function Repo(repoInfo_, forceRestClient_, authTokenProvider_, appCheckProvider_) {
        this.repoInfo_ = repoInfo_;
        this.forceRestClient_ = forceRestClient_;
        this.authTokenProvider_ = authTokenProvider_;
        this.appCheckProvider_ = appCheckProvider_;
        this.dataUpdateCount = 0;
        this.statsListener_ = null;
        this.eventQueue_ = new EventQueue();
        this.nextWriteId_ = 1;
        this.interceptServerDataCallback_ = null;
        /** A list of data pieces and paths to be set when this client disconnects. */
        this.onDisconnect_ = newSparseSnapshotTree();
        /** Stores queues of outstanding transactions for Firebase locations. */
        this.transactionQueueTree_ = new Tree();
        // TODO: This should be @private but it's used by test_access.js and internal.js
        this.persistentConnection_ = null;
        // This key is intentionally not updated if RepoInfo is later changed or replaced
        this.key = this.repoInfo_.toURLString();
    }
    /**
     * @returns The URL corresponding to the root of this Firebase.
     */
    Repo.prototype.toString = function () {
        return ((this.repoInfo_.secure ? 'https://' : 'http://') + this.repoInfo_.host);
    };
    return Repo;
}());
function repoStart(repo, appId, authOverride) {
    repo.stats_ = statsManagerGetCollection(repo.repoInfo_);
    if (repo.forceRestClient_ || beingCrawled()) {
        repo.server_ = new ReadonlyRestClient(repo.repoInfo_, function (pathString, data, isMerge, tag) {
            repoOnDataUpdate(repo, pathString, data, isMerge, tag);
        }, repo.authTokenProvider_, repo.appCheckProvider_);
        // Minor hack: Fire onConnect immediately, since there's no actual connection.
        setTimeout(function () { return repoOnConnectStatus(repo, /* connectStatus= */ true); }, 0);
    }
    else {
        // Validate authOverride
        if (typeof authOverride !== 'undefined' && authOverride !== null) {
            if (typeof authOverride !== 'object') {
                throw new Error('Only objects are supported for option databaseAuthVariableOverride');
            }
            try {
                util.stringify(authOverride);
            }
            catch (e) {
                throw new Error('Invalid authOverride provided: ' + e);
            }
        }
        repo.persistentConnection_ = new PersistentConnection(repo.repoInfo_, appId, function (pathString, data, isMerge, tag) {
            repoOnDataUpdate(repo, pathString, data, isMerge, tag);
        }, function (connectStatus) {
            repoOnConnectStatus(repo, connectStatus);
        }, function (updates) {
            repoOnServerInfoUpdate(repo, updates);
        }, repo.authTokenProvider_, repo.appCheckProvider_, authOverride);
        repo.server_ = repo.persistentConnection_;
    }
    repo.authTokenProvider_.addTokenChangeListener(function (token) {
        repo.server_.refreshAuthToken(token);
    });
    repo.appCheckProvider_.addTokenChangeListener(function (result) {
        repo.server_.refreshAppCheckToken(result.token);
    });
    // In the case of multiple Repos for the same repoInfo (i.e. there are multiple Firebase.Contexts being used),
    // we only want to create one StatsReporter.  As such, we'll report stats over the first Repo created.
    repo.statsReporter_ = statsManagerGetOrCreateReporter(repo.repoInfo_, function () { return new StatsReporter(repo.stats_, repo.server_); });
    // Used for .info.
    repo.infoData_ = new SnapshotHolder();
    repo.infoSyncTree_ = new SyncTree({
        startListening: function (query, tag, currentHashFn, onComplete) {
            var infoEvents = [];
            var node = repo.infoData_.getNode(query._path);
            // This is possibly a hack, but we have different semantics for .info endpoints. We don't raise null events
            // on initial data...
            if (!node.isEmpty()) {
                infoEvents = syncTreeApplyServerOverwrite(repo.infoSyncTree_, query._path, node);
                setTimeout(function () {
                    onComplete('ok');
                }, 0);
            }
            return infoEvents;
        },
        stopListening: function () { }
    });
    repoUpdateInfo(repo, 'connected', false);
    repo.serverSyncTree_ = new SyncTree({
        startListening: function (query, tag, currentHashFn, onComplete) {
            repo.server_.listen(query, currentHashFn, tag, function (status, data) {
                var events = onComplete(status, data);
                eventQueueRaiseEventsForChangedPath(repo.eventQueue_, query._path, events);
            });
            // No synchronous events for network-backed sync trees
            return [];
        },
        stopListening: function (query, tag) {
            repo.server_.unlisten(query, tag);
        }
    });
}
/**
 * @returns The time in milliseconds, taking the server offset into account if we have one.
 */
function repoServerTime(repo) {
    var offsetNode = repo.infoData_.getNode(new Path('.info/serverTimeOffset'));
    var offset = offsetNode.val() || 0;
    return new Date().getTime() + offset;
}
/**
 * Generate ServerValues using some variables from the repo object.
 */
function repoGenerateServerValues(repo) {
    return generateWithValues({
        timestamp: repoServerTime(repo)
    });
}
/**
 * Called by realtime when we get new messages from the server.
 */
function repoOnDataUpdate(repo, pathString, data, isMerge, tag) {
    // For testing.
    repo.dataUpdateCount++;
    var path = new Path(pathString);
    data = repo.interceptServerDataCallback_
        ? repo.interceptServerDataCallback_(pathString, data)
        : data;
    var events = [];
    if (tag) {
        if (isMerge) {
            var taggedChildren = util.map(data, function (raw) { return nodeFromJSON(raw); });
            events = syncTreeApplyTaggedQueryMerge(repo.serverSyncTree_, path, taggedChildren, tag);
        }
        else {
            var taggedSnap = nodeFromJSON(data);
            events = syncTreeApplyTaggedQueryOverwrite(repo.serverSyncTree_, path, taggedSnap, tag);
        }
    }
    else if (isMerge) {
        var changedChildren = util.map(data, function (raw) { return nodeFromJSON(raw); });
        events = syncTreeApplyServerMerge(repo.serverSyncTree_, path, changedChildren);
    }
    else {
        var snap = nodeFromJSON(data);
        events = syncTreeApplyServerOverwrite(repo.serverSyncTree_, path, snap);
    }
    var affectedPath = path;
    if (events.length > 0) {
        // Since we have a listener outstanding for each transaction, receiving any events
        // is a proxy for some change having occurred.
        affectedPath = repoRerunTransactions(repo, path);
    }
    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, events);
}
function repoOnConnectStatus(repo, connectStatus) {
    repoUpdateInfo(repo, 'connected', connectStatus);
    if (connectStatus === false) {
        repoRunOnDisconnectEvents(repo);
    }
}
function repoOnServerInfoUpdate(repo, updates) {
    each(updates, function (key, value) {
        repoUpdateInfo(repo, key, value);
    });
}
function repoUpdateInfo(repo, pathString, value) {
    var path = new Path('/.info/' + pathString);
    var newNode = nodeFromJSON(value);
    repo.infoData_.updateSnapshot(path, newNode);
    var events = syncTreeApplyServerOverwrite(repo.infoSyncTree_, path, newNode);
    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);
}
function repoGetNextWriteId(repo) {
    return repo.nextWriteId_++;
}
/**
 * The purpose of `getValue` is to return the latest known value
 * satisfying `query`.
 *
 * This method will first check for in-memory cached values
 * belonging to active listeners. If they are found, such values
 * are considered to be the most up-to-date.
 *
 * If the client is not connected, this method will wait until the
 *  repo has established a connection and then request the value for `query`.
 * If the client is not able to retrieve the query result for another reason,
 * it reports an error.
 *
 * @param query - The query to surface a value for.
 */
function repoGetValue(repo, query, eventRegistration) {
    // Only active queries are cached. There is no persisted cache.
    var cached = syncTreeGetServerValue(repo.serverSyncTree_, query);
    if (cached != null) {
        return Promise.resolve(cached);
    }
    return repo.server_.get(query).then(function (payload) {
        var node = nodeFromJSON(payload).withIndex(query._queryParams.getIndex());
        /**
         * Below we simulate the actions of an `onlyOnce` `onValue()` event where:
         * Add an event registration,
         * Update data at the path,
         * Raise any events,
         * Cleanup the SyncTree
         */
        syncTreeAddEventRegistration(repo.serverSyncTree_, query, eventRegistration, true);
        var events;
        if (query._queryParams.loadsAllData()) {
            events = syncTreeApplyServerOverwrite(repo.serverSyncTree_, query._path, node);
        }
        else {
            var tag = syncTreeTagForQuery(repo.serverSyncTree_, query);
            events = syncTreeApplyTaggedQueryOverwrite(repo.serverSyncTree_, query._path, node, tag);
        }
        /*
         * We need to raise events in the scenario where `get()` is called at a parent path, and
         * while the `get()` is pending, `onValue` is called at a child location. While get() is waiting
         * for the data, `onValue` will register a new event. Then, get() will come back, and update the syncTree
         * and its corresponding serverCache, including the child location where `onValue` is called. Then,
         * `onValue` will receive the event from the server, but look at the syncTree and see that the data received
         * from the server is already at the SyncPoint, and so the `onValue` callback will never get fired.
         * Calling `eventQueueRaiseEventsForChangedPath()` is the correct way to propagate the events and
         * ensure the corresponding child events will get fired.
         */
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, query._path, events);
        syncTreeRemoveEventRegistration(repo.serverSyncTree_, query, eventRegistration, null, true);
        return node;
    }, function (err) {
        repoLog(repo, 'get for query ' + util.stringify(query) + ' failed: ' + err);
        return Promise.reject(new Error(err));
    });
}
function repoSetWithPriority(repo, path, newVal, newPriority, onComplete) {
    repoLog(repo, 'set', {
        path: path.toString(),
        value: newVal,
        priority: newPriority
    });
    // TODO: Optimize this behavior to either (a) store flag to skip resolving where possible and / or
    // (b) store unresolved paths on JSON parse
    var serverValues = repoGenerateServerValues(repo);
    var newNodeUnresolved = nodeFromJSON(newVal, newPriority);
    var existing = syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path);
    var newNode = resolveDeferredValueSnapshot(newNodeUnresolved, existing, serverValues);
    var writeId = repoGetNextWriteId(repo);
    var events = syncTreeApplyUserOverwrite(repo.serverSyncTree_, path, newNode, writeId, true);
    eventQueueQueueEvents(repo.eventQueue_, events);
    repo.server_.put(path.toString(), newNodeUnresolved.val(/*export=*/ true), function (status, errorReason) {
        var success = status === 'ok';
        if (!success) {
            warn('set at ' + path + ' failed: ' + status);
        }
        var clearEvents = syncTreeAckUserWrite(repo.serverSyncTree_, writeId, !success);
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, clearEvents);
        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
    });
    var affectedPath = repoAbortTransactions(repo, path);
    repoRerunTransactions(repo, affectedPath);
    // We queued the events above, so just flush the queue here
    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, []);
}
function repoUpdate(repo, path, childrenToMerge, onComplete) {
    repoLog(repo, 'update', { path: path.toString(), value: childrenToMerge });
    // Start with our existing data and merge each child into it.
    var empty = true;
    var serverValues = repoGenerateServerValues(repo);
    var changedChildren = {};
    each(childrenToMerge, function (changedKey, changedValue) {
        empty = false;
        changedChildren[changedKey] = resolveDeferredValueTree(pathChild(path, changedKey), nodeFromJSON(changedValue), repo.serverSyncTree_, serverValues);
    });
    if (!empty) {
        var writeId_1 = repoGetNextWriteId(repo);
        var events = syncTreeApplyUserMerge(repo.serverSyncTree_, path, changedChildren, writeId_1);
        eventQueueQueueEvents(repo.eventQueue_, events);
        repo.server_.merge(path.toString(), childrenToMerge, function (status, errorReason) {
            var success = status === 'ok';
            if (!success) {
                warn('update at ' + path + ' failed: ' + status);
            }
            var clearEvents = syncTreeAckUserWrite(repo.serverSyncTree_, writeId_1, !success);
            var affectedPath = clearEvents.length > 0 ? repoRerunTransactions(repo, path) : path;
            eventQueueRaiseEventsForChangedPath(repo.eventQueue_, affectedPath, clearEvents);
            repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
        });
        each(childrenToMerge, function (changedPath) {
            var affectedPath = repoAbortTransactions(repo, pathChild(path, changedPath));
            repoRerunTransactions(repo, affectedPath);
        });
        // We queued the events above, so just flush the queue here
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, []);
    }
    else {
        log("update() called with empty data.  Don't do anything.");
        repoCallOnCompleteCallback(repo, onComplete, 'ok', undefined);
    }
}
/**
 * Applies all of the changes stored up in the onDisconnect_ tree.
 */
function repoRunOnDisconnectEvents(repo) {
    repoLog(repo, 'onDisconnectEvents');
    var serverValues = repoGenerateServerValues(repo);
    var resolvedOnDisconnectTree = newSparseSnapshotTree();
    sparseSnapshotTreeForEachTree(repo.onDisconnect_, newEmptyPath(), function (path, node) {
        var resolved = resolveDeferredValueTree(path, node, repo.serverSyncTree_, serverValues);
        sparseSnapshotTreeRemember(resolvedOnDisconnectTree, path, resolved);
    });
    var events = [];
    sparseSnapshotTreeForEachTree(resolvedOnDisconnectTree, newEmptyPath(), function (path, snap) {
        events = events.concat(syncTreeApplyServerOverwrite(repo.serverSyncTree_, path, snap));
        var affectedPath = repoAbortTransactions(repo, path);
        repoRerunTransactions(repo, affectedPath);
    });
    repo.onDisconnect_ = newSparseSnapshotTree();
    eventQueueRaiseEventsForChangedPath(repo.eventQueue_, newEmptyPath(), events);
}
function repoOnDisconnectCancel(repo, path, onComplete) {
    repo.server_.onDisconnectCancel(path.toString(), function (status, errorReason) {
        if (status === 'ok') {
            sparseSnapshotTreeForget(repo.onDisconnect_, path);
        }
        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
    });
}
function repoOnDisconnectSet(repo, path, value, onComplete) {
    var newNode = nodeFromJSON(value);
    repo.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {
        if (status === 'ok') {
            sparseSnapshotTreeRemember(repo.onDisconnect_, path, newNode);
        }
        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
    });
}
function repoOnDisconnectSetWithPriority(repo, path, value, priority, onComplete) {
    var newNode = nodeFromJSON(value, priority);
    repo.server_.onDisconnectPut(path.toString(), newNode.val(/*export=*/ true), function (status, errorReason) {
        if (status === 'ok') {
            sparseSnapshotTreeRemember(repo.onDisconnect_, path, newNode);
        }
        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
    });
}
function repoOnDisconnectUpdate(repo, path, childrenToMerge, onComplete) {
    if (util.isEmpty(childrenToMerge)) {
        log("onDisconnect().update() called with empty data.  Don't do anything.");
        repoCallOnCompleteCallback(repo, onComplete, 'ok', undefined);
        return;
    }
    repo.server_.onDisconnectMerge(path.toString(), childrenToMerge, function (status, errorReason) {
        if (status === 'ok') {
            each(childrenToMerge, function (childName, childNode) {
                var newChildNode = nodeFromJSON(childNode);
                sparseSnapshotTreeRemember(repo.onDisconnect_, pathChild(path, childName), newChildNode);
            });
        }
        repoCallOnCompleteCallback(repo, onComplete, status, errorReason);
    });
}
function repoAddEventCallbackForQuery(repo, query, eventRegistration) {
    var events;
    if (pathGetFront(query._path) === '.info') {
        events = syncTreeAddEventRegistration(repo.infoSyncTree_, query, eventRegistration);
    }
    else {
        events = syncTreeAddEventRegistration(repo.serverSyncTree_, query, eventRegistration);
    }
    eventQueueRaiseEventsAtPath(repo.eventQueue_, query._path, events);
}
function repoRemoveEventCallbackForQuery(repo, query, eventRegistration) {
    // These are guaranteed not to raise events, since we're not passing in a cancelError. However, we can future-proof
    // a little bit by handling the return values anyways.
    var events;
    if (pathGetFront(query._path) === '.info') {
        events = syncTreeRemoveEventRegistration(repo.infoSyncTree_, query, eventRegistration);
    }
    else {
        events = syncTreeRemoveEventRegistration(repo.serverSyncTree_, query, eventRegistration);
    }
    eventQueueRaiseEventsAtPath(repo.eventQueue_, query._path, events);
}
function repoInterrupt(repo) {
    if (repo.persistentConnection_) {
        repo.persistentConnection_.interrupt(INTERRUPT_REASON);
    }
}
function repoResume(repo) {
    if (repo.persistentConnection_) {
        repo.persistentConnection_.resume(INTERRUPT_REASON);
    }
}
function repoLog(repo) {
    var varArgs = [];
    for (var _i = 1; _i < arguments.length; _i++) {
        varArgs[_i - 1] = arguments[_i];
    }
    var prefix = '';
    if (repo.persistentConnection_) {
        prefix = repo.persistentConnection_.id + ':';
    }
    log.apply(void 0, tslib.__spreadArray([prefix], tslib.__read(varArgs), false));
}
function repoCallOnCompleteCallback(repo, callback, status, errorReason) {
    if (callback) {
        exceptionGuard(function () {
            if (status === 'ok') {
                callback(null);
            }
            else {
                var code = (status || 'error').toUpperCase();
                var message = code;
                if (errorReason) {
                    message += ': ' + errorReason;
                }
                var error = new Error(message);
                // eslint-disable-next-line @typescript-eslint/no-explicit-any
                error.code = code;
                callback(error);
            }
        });
    }
}
/**
 * Creates a new transaction, adds it to the transactions we're tracking, and
 * sends it to the server if possible.
 *
 * @param path - Path at which to do transaction.
 * @param transactionUpdate - Update callback.
 * @param onComplete - Completion callback.
 * @param unwatcher - Function that will be called when the transaction no longer
 * need data updates for `path`.
 * @param applyLocally - Whether or not to make intermediate results visible
 */
function repoStartTransaction(repo, path, transactionUpdate, onComplete, unwatcher, applyLocally) {
    repoLog(repo, 'transaction on ' + path);
    // Initialize transaction.
    var transaction = {
        path: path,
        update: transactionUpdate,
        onComplete: onComplete,
        // One of TransactionStatus enums.
        status: null,
        // Used when combining transactions at different locations to figure out
        // which one goes first.
        order: LUIDGenerator(),
        // Whether to raise local events for this transaction.
        applyLocally: applyLocally,
        // Count of how many times we've retried the transaction.
        retryCount: 0,
        // Function to call to clean up our .on() listener.
        unwatcher: unwatcher,
        // Stores why a transaction was aborted.
        abortReason: null,
        currentWriteId: null,
        currentInputSnapshot: null,
        currentOutputSnapshotRaw: null,
        currentOutputSnapshotResolved: null
    };
    // Run transaction initially.
    var currentState = repoGetLatestState(repo, path, undefined);
    transaction.currentInputSnapshot = currentState;
    var newVal = transaction.update(currentState.val());
    if (newVal === undefined) {
        // Abort transaction.
        transaction.unwatcher();
        transaction.currentOutputSnapshotRaw = null;
        transaction.currentOutputSnapshotResolved = null;
        if (transaction.onComplete) {
            transaction.onComplete(null, false, transaction.currentInputSnapshot);
        }
    }
    else {
        validateFirebaseData('transaction failed: Data returned ', newVal, transaction.path);
        // Mark as run and add to our queue.
        transaction.status = 0 /* TransactionStatus.RUN */;
        var queueNode = treeSubTree(repo.transactionQueueTree_, path);
        var nodeQueue = treeGetValue(queueNode) || [];
        nodeQueue.push(transaction);
        treeSetValue(queueNode, nodeQueue);
        // Update visibleData and raise events
        // Note: We intentionally raise events after updating all of our
        // transaction state, since the user could start new transactions from the
        // event callbacks.
        var priorityForNode = void 0;
        if (typeof newVal === 'object' &&
            newVal !== null &&
            util.contains(newVal, '.priority')) {
            // eslint-disable-next-line @typescript-eslint/no-explicit-any
            priorityForNode = util.safeGet(newVal, '.priority');
            util.assert(isValidPriority(priorityForNode), 'Invalid priority returned by transaction. ' +
                'Priority must be a valid string, finite number, server value, or null.');
        }
        else {
            var currentNode = syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path) ||
                ChildrenNode.EMPTY_NODE;
            priorityForNode = currentNode.getPriority().val();
        }
        var serverValues = repoGenerateServerValues(repo);
        var newNodeUnresolved = nodeFromJSON(newVal, priorityForNode);
        var newNode = resolveDeferredValueSnapshot(newNodeUnresolved, currentState, serverValues);
        transaction.currentOutputSnapshotRaw = newNodeUnresolved;
        transaction.currentOutputSnapshotResolved = newNode;
        transaction.currentWriteId = repoGetNextWriteId(repo);
        var events = syncTreeApplyUserOverwrite(repo.serverSyncTree_, path, newNode, transaction.currentWriteId, transaction.applyLocally);
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);
        repoSendReadyTransactions(repo, repo.transactionQueueTree_);
    }
}
/**
 * @param excludeSets - A specific set to exclude
 */
function repoGetLatestState(repo, path, excludeSets) {
    return (syncTreeCalcCompleteEventCache(repo.serverSyncTree_, path, excludeSets) ||
        ChildrenNode.EMPTY_NODE);
}
/**
 * Sends any already-run transactions that aren't waiting for outstanding
 * transactions to complete.
 *
 * Externally it's called with no arguments, but it calls itself recursively
 * with a particular transactionQueueTree node to recurse through the tree.
 *
 * @param node - transactionQueueTree node to start at.
 */
function repoSendReadyTransactions(repo, node) {
    if (node === void 0) { node = repo.transactionQueueTree_; }
    // Before recursing, make sure any completed transactions are removed.
    if (!node) {
        repoPruneCompletedTransactionsBelowNode(repo, node);
    }
    if (treeGetValue(node)) {
        var queue = repoBuildTransactionQueue(repo, node);
        util.assert(queue.length > 0, 'Sending zero length transaction queue');
        var allRun = queue.every(function (transaction) { return transaction.status === 0 /* TransactionStatus.RUN */; });
        // If they're all run (and not sent), we can send them.  Else, we must wait.
        if (allRun) {
            repoSendTransactionQueue(repo, treeGetPath(node), queue);
        }
    }
    else if (treeHasChildren(node)) {
        treeForEachChild(node, function (childNode) {
            repoSendReadyTransactions(repo, childNode);
        });
    }
}
/**
 * Given a list of run transactions, send them to the server and then handle
 * the result (success or failure).
 *
 * @param path - The location of the queue.
 * @param queue - Queue of transactions under the specified location.
 */
function repoSendTransactionQueue(repo, path, queue) {
    // Mark transactions as sent and increment retry count!
    var setsToIgnore = queue.map(function (txn) {
        return txn.currentWriteId;
    });
    var latestState = repoGetLatestState(repo, path, setsToIgnore);
    var snapToSend = latestState;
    var latestHash = latestState.hash();
    for (var i = 0; i < queue.length; i++) {
        var txn = queue[i];
        util.assert(txn.status === 0 /* TransactionStatus.RUN */, 'tryToSendTransactionQueue_: items in queue should all be run.');
        txn.status = 1 /* TransactionStatus.SENT */;
        txn.retryCount++;
        var relativePath = newRelativePath(path, txn.path);
        // If we've gotten to this point, the output snapshot must be defined.
        snapToSend = snapToSend.updateChild(relativePath /** @type {!Node} */, txn.currentOutputSnapshotRaw);
    }
    var dataToSend = snapToSend.val(true);
    var pathToSend = path;
    // Send the put.
    repo.server_.put(pathToSend.toString(), dataToSend, function (status) {
        repoLog(repo, 'transaction put response', {
            path: pathToSend.toString(),
            status: status
        });
        var events = [];
        if (status === 'ok') {
            // Queue up the callbacks and fire them after cleaning up all of our
            // transaction state, since the callback could trigger more
            // transactions or sets.
            var callbacks = [];
            var _loop_1 = function (i) {
                queue[i].status = 2 /* TransactionStatus.COMPLETED */;
                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, queue[i].currentWriteId));
                if (queue[i].onComplete) {
                    // We never unset the output snapshot, and given that this
                    // transaction is complete, it should be set
                    callbacks.push(function () {
                        return queue[i].onComplete(null, true, queue[i].currentOutputSnapshotResolved);
                    });
                }
                queue[i].unwatcher();
            };
            for (var i = 0; i < queue.length; i++) {
                _loop_1(i);
            }
            // Now remove the completed transactions.
            repoPruneCompletedTransactionsBelowNode(repo, treeSubTree(repo.transactionQueueTree_, path));
            // There may be pending transactions that we can now send.
            repoSendReadyTransactions(repo, repo.transactionQueueTree_);
            eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);
            // Finally, trigger onComplete callbacks.
            for (var i = 0; i < callbacks.length; i++) {
                exceptionGuard(callbacks[i]);
            }
        }
        else {
            // transactions are no longer sent.  Update their status appropriately.
            if (status === 'datastale') {
                for (var i = 0; i < queue.length; i++) {
                    if (queue[i].status === 3 /* TransactionStatus.SENT_NEEDS_ABORT */) {
                        queue[i].status = 4 /* TransactionStatus.NEEDS_ABORT */;
                    }
                    else {
                        queue[i].status = 0 /* TransactionStatus.RUN */;
                    }
                }
            }
            else {
                warn('transaction at ' + pathToSend.toString() + ' failed: ' + status);
                for (var i = 0; i < queue.length; i++) {
                    queue[i].status = 4 /* TransactionStatus.NEEDS_ABORT */;
                    queue[i].abortReason = status;
                }
            }
            repoRerunTransactions(repo, path);
        }
    }, latestHash);
}
/**
 * Finds all transactions dependent on the data at changedPath and reruns them.
 *
 * Should be called any time cached data changes.
 *
 * Return the highest path that was affected by rerunning transactions. This
 * is the path at which events need to be raised for.
 *
 * @param changedPath - The path in mergedData that changed.
 * @returns The rootmost path that was affected by rerunning transactions.
 */
function repoRerunTransactions(repo, changedPath) {
    var rootMostTransactionNode = repoGetAncestorTransactionNode(repo, changedPath);
    var path = treeGetPath(rootMostTransactionNode);
    var queue = repoBuildTransactionQueue(repo, rootMostTransactionNode);
    repoRerunTransactionQueue(repo, queue, path);
    return path;
}
/**
 * Does all the work of rerunning transactions (as well as cleans up aborted
 * transactions and whatnot).
 *
 * @param queue - The queue of transactions to run.
 * @param path - The path the queue is for.
 */
function repoRerunTransactionQueue(repo, queue, path) {
    if (queue.length === 0) {
        return; // Nothing to do!
    }
    // Queue up the callbacks and fire them after cleaning up all of our
    // transaction state, since the callback could trigger more transactions or
    // sets.
    var callbacks = [];
    var events = [];
    // Ignore all of the sets we're going to re-run.
    var txnsToRerun = queue.filter(function (q) {
        return q.status === 0 /* TransactionStatus.RUN */;
    });
    var setsToIgnore = txnsToRerun.map(function (q) {
        return q.currentWriteId;
    });
    var _loop_2 = function (i) {
        var transaction = queue[i];
        var relativePath = newRelativePath(path, transaction.path);
        var abortTransaction = false, abortReason;
        util.assert(relativePath !== null, 'rerunTransactionsUnderNode_: relativePath should not be null.');
        if (transaction.status === 4 /* TransactionStatus.NEEDS_ABORT */) {
            abortTransaction = true;
            abortReason = transaction.abortReason;
            events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));
        }
        else if (transaction.status === 0 /* TransactionStatus.RUN */) {
            if (transaction.retryCount >= MAX_TRANSACTION_RETRIES) {
                abortTransaction = true;
                abortReason = 'maxretry';
                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));
            }
            else {
                // This code reruns a transaction
                var currentNode = repoGetLatestState(repo, transaction.path, setsToIgnore);
                transaction.currentInputSnapshot = currentNode;
                var newData = queue[i].update(currentNode.val());
                if (newData !== undefined) {
                    validateFirebaseData('transaction failed: Data returned ', newData, transaction.path);
                    var newDataNode = nodeFromJSON(newData);
                    var hasExplicitPriority = typeof newData === 'object' &&
                        newData != null &&
                        util.contains(newData, '.priority');
                    if (!hasExplicitPriority) {
                        // Keep the old priority if there wasn't a priority explicitly specified.
                        newDataNode = newDataNode.updatePriority(currentNode.getPriority());
                    }
                    var oldWriteId = transaction.currentWriteId;
                    var serverValues = repoGenerateServerValues(repo);
                    var newNodeResolved = resolveDeferredValueSnapshot(newDataNode, currentNode, serverValues);
                    transaction.currentOutputSnapshotRaw = newDataNode;
                    transaction.currentOutputSnapshotResolved = newNodeResolved;
                    transaction.currentWriteId = repoGetNextWriteId(repo);
                    // Mutates setsToIgnore in place
                    setsToIgnore.splice(setsToIgnore.indexOf(oldWriteId), 1);
                    events = events.concat(syncTreeApplyUserOverwrite(repo.serverSyncTree_, transaction.path, newNodeResolved, transaction.currentWriteId, transaction.applyLocally));
                    events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, oldWriteId, true));
                }
                else {
                    abortTransaction = true;
                    abortReason = 'nodata';
                    events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, transaction.currentWriteId, true));
                }
            }
        }
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, path, events);
        events = [];
        if (abortTransaction) {
            // Abort.
            queue[i].status = 2 /* TransactionStatus.COMPLETED */;
            // Removing a listener can trigger pruning which can muck with
            // mergedData/visibleData (as it prunes data). So defer the unwatcher
            // until we're done.
            (function (unwatcher) {
                setTimeout(unwatcher, Math.floor(0));
            })(queue[i].unwatcher);
            if (queue[i].onComplete) {
                if (abortReason === 'nodata') {
                    callbacks.push(function () {
                        return queue[i].onComplete(null, false, queue[i].currentInputSnapshot);
                    });
                }
                else {
                    callbacks.push(function () {
                        return queue[i].onComplete(new Error(abortReason), false, null);
                    });
                }
            }
        }
    };
    for (var i = 0; i < queue.length; i++) {
        _loop_2(i);
    }
    // Clean up completed transactions.
    repoPruneCompletedTransactionsBelowNode(repo, repo.transactionQueueTree_);
    // Now fire callbacks, now that we're in a good, known state.
    for (var i = 0; i < callbacks.length; i++) {
        exceptionGuard(callbacks[i]);
    }
    // Try to send the transaction result to the server.
    repoSendReadyTransactions(repo, repo.transactionQueueTree_);
}
/**
 * Returns the rootmost ancestor node of the specified path that has a pending
 * transaction on it, or just returns the node for the given path if there are
 * no pending transactions on any ancestor.
 *
 * @param path - The location to start at.
 * @returns The rootmost node with a transaction.
 */
function repoGetAncestorTransactionNode(repo, path) {
    var front;
    // Start at the root and walk deeper into the tree towards path until we
    // find a node with pending transactions.
    var transactionNode = repo.transactionQueueTree_;
    front = pathGetFront(path);
    while (front !== null && treeGetValue(transactionNode) === undefined) {
        transactionNode = treeSubTree(transactionNode, front);
        path = pathPopFront(path);
        front = pathGetFront(path);
    }
    return transactionNode;
}
/**
 * Builds the queue of all transactions at or below the specified
 * transactionNode.
 *
 * @param transactionNode
 * @returns The generated queue.
 */
function repoBuildTransactionQueue(repo, transactionNode) {
    // Walk any child transaction queues and aggregate them into a single queue.
    var transactionQueue = [];
    repoAggregateTransactionQueuesForNode(repo, transactionNode, transactionQueue);
    // Sort them by the order the transactions were created.
    transactionQueue.sort(function (a, b) { return a.order - b.order; });
    return transactionQueue;
}
function repoAggregateTransactionQueuesForNode(repo, node, queue) {
    var nodeQueue = treeGetValue(node);
    if (nodeQueue) {
        for (var i = 0; i < nodeQueue.length; i++) {
            queue.push(nodeQueue[i]);
        }
    }
    treeForEachChild(node, function (child) {
        repoAggregateTransactionQueuesForNode(repo, child, queue);
    });
}
/**
 * Remove COMPLETED transactions at or below this node in the transactionQueueTree_.
 */
function repoPruneCompletedTransactionsBelowNode(repo, node) {
    var queue = treeGetValue(node);
    if (queue) {
        var to = 0;
        for (var from = 0; from < queue.length; from++) {
            if (queue[from].status !== 2 /* TransactionStatus.COMPLETED */) {
                queue[to] = queue[from];
                to++;
            }
        }
        queue.length = to;
        treeSetValue(node, queue.length > 0 ? queue : undefined);
    }
    treeForEachChild(node, function (childNode) {
        repoPruneCompletedTransactionsBelowNode(repo, childNode);
    });
}
/**
 * Aborts all transactions on ancestors or descendants of the specified path.
 * Called when doing a set() or update() since we consider them incompatible
 * with transactions.
 *
 * @param path - Path for which we want to abort related transactions.
 */
function repoAbortTransactions(repo, path) {
    var affectedPath = treeGetPath(repoGetAncestorTransactionNode(repo, path));
    var transactionNode = treeSubTree(repo.transactionQueueTree_, path);
    treeForEachAncestor(transactionNode, function (node) {
        repoAbortTransactionsOnNode(repo, node);
    });
    repoAbortTransactionsOnNode(repo, transactionNode);
    treeForEachDescendant(transactionNode, function (node) {
        repoAbortTransactionsOnNode(repo, node);
    });
    return affectedPath;
}
/**
 * Abort transactions stored in this transaction queue node.
 *
 * @param node - Node to abort transactions for.
 */
function repoAbortTransactionsOnNode(repo, node) {
    var queue = treeGetValue(node);
    if (queue) {
        // Queue up the callbacks and fire them after cleaning up all of our
        // transaction state, since the callback could trigger more transactions
        // or sets.
        var callbacks = [];
        // Go through queue.  Any already-sent transactions must be marked for
        // abort, while the unsent ones can be immediately aborted and removed.
        var events = [];
        var lastSent = -1;
        for (var i = 0; i < queue.length; i++) {
            if (queue[i].status === 3 /* TransactionStatus.SENT_NEEDS_ABORT */) ;
            else if (queue[i].status === 1 /* TransactionStatus.SENT */) {
                util.assert(lastSent === i - 1, 'All SENT items should be at beginning of queue.');
                lastSent = i;
                // Mark transaction for abort when it comes back.
                queue[i].status = 3 /* TransactionStatus.SENT_NEEDS_ABORT */;
                queue[i].abortReason = 'set';
            }
            else {
                util.assert(queue[i].status === 0 /* TransactionStatus.RUN */, 'Unexpected transaction status in abort');
                // We can abort it immediately.
                queue[i].unwatcher();
                events = events.concat(syncTreeAckUserWrite(repo.serverSyncTree_, queue[i].currentWriteId, true));
                if (queue[i].onComplete) {
                    callbacks.push(queue[i].onComplete.bind(null, new Error('set'), false, null));
                }
            }
        }
        if (lastSent === -1) {
            // We're not waiting for any sent transactions.  We can clear the queue.
            treeSetValue(node, undefined);
        }
        else {
            // Remove the transactions we aborted.
            queue.length = lastSent + 1;
        }
        // Now fire the callbacks.
        eventQueueRaiseEventsForChangedPath(repo.eventQueue_, treeGetPath(node), events);
        for (var i = 0; i < callbacks.length; i++) {
            exceptionGuard(callbacks[i]);
        }
    }
}

/**
 * @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.
 */
/**
 * The `onDisconnect` class allows you to write or clear data when your client
 * disconnects from the Database server. These updates occur whether your
 * client disconnects cleanly or not, so you can rely on them to clean up data
 * even if a connection is dropped or a client crashes.
 *
 * The `onDisconnect` class is most commonly used to manage presence in
 * applications where it is useful to detect how many clients are connected and
 * when other clients disconnect. See
 * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
 * for more information.
 *
 * To avoid problems when a connection is dropped before the requests can be
 * transferred to the Database server, these functions should be called before
 * writing any data.
 *
 * Note that `onDisconnect` operations are only triggered once. If you want an
 * operation to occur each time a disconnect occurs, you'll need to re-establish
 * the `onDisconnect` operations each time you reconnect.
 */
var OnDisconnect = /** @class */ (function () {
    /** @hideconstructor */
    function OnDisconnect(_repo, _path) {
        this._repo = _repo;
        this._path = _path;
    }
    /**
     * Cancels all previously queued `onDisconnect()` set or update events for this
     * location and all children.
     *
     * If a write has been queued for this location via a `set()` or `update()` at a
     * parent location, the write at this location will be canceled, though writes
     * to sibling locations will still occur.
     *
     * @returns Resolves when synchronization to the server is complete.
     */
    OnDisconnect.prototype.cancel = function () {
        var deferred = new util.Deferred();
        repoOnDisconnectCancel(this._repo, this._path, deferred.wrapCallback(function () { }));
        return deferred.promise;
    };
    /**
     * Ensures the data at this location is deleted when the client is disconnected
     * (due to closing the browser, navigating to a new page, or network issues).
     *
     * @returns Resolves when synchronization to the server is complete.
     */
    OnDisconnect.prototype.remove = function () {
        validateWritablePath('OnDisconnect.remove', this._path);
        var deferred = new util.Deferred();
        repoOnDisconnectSet(this._repo, this._path, null, deferred.wrapCallback(function () { }));
        return deferred.promise;
    };
    /**
     * Ensures the data at this location is set to the specified value when the
     * client is disconnected (due to closing the browser, navigating to a new page,
     * or network issues).
     *
     * `set()` is especially useful for implementing "presence" systems, where a
     * value should be changed or cleared when a user disconnects so that they
     * appear "offline" to other users. See
     * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
     * for more information.
     *
     * Note that `onDisconnect` operations are only triggered once. If you want an
     * operation to occur each time a disconnect occurs, you'll need to re-establish
     * the `onDisconnect` operations each time.
     *
     * @param value - The value to be written to this location on disconnect (can
     * be an object, array, string, number, boolean, or null).
     * @returns Resolves when synchronization to the Database is complete.
     */
    OnDisconnect.prototype.set = function (value) {
        validateWritablePath('OnDisconnect.set', this._path);
        validateFirebaseDataArg('OnDisconnect.set', value, this._path, false);
        var deferred = new util.Deferred();
        repoOnDisconnectSet(this._repo, this._path, value, deferred.wrapCallback(function () { }));
        return deferred.promise;
    };
    /**
     * Ensures the data at this location is set to the specified value and priority
     * when the client is disconnected (due to closing the browser, navigating to a
     * new page, or network issues).
     *
     * @param value - The value to be written to this location on disconnect (can
     * be an object, array, string, number, boolean, or null).
     * @param priority - The priority to be written (string, number, or null).
     * @returns Resolves when synchronization to the Database is complete.
     */
    OnDisconnect.prototype.setWithPriority = function (value, priority) {
        validateWritablePath('OnDisconnect.setWithPriority', this._path);
        validateFirebaseDataArg('OnDisconnect.setWithPriority', value, this._path, false);
        validatePriority('OnDisconnect.setWithPriority', priority, false);
        var deferred = new util.Deferred();
        repoOnDisconnectSetWithPriority(this._repo, this._path, value, priority, deferred.wrapCallback(function () { }));
        return deferred.promise;
    };
    /**
     * Writes multiple values at this location when the client is disconnected (due
     * to closing the browser, navigating to a new page, or network issues).
     *
     * The `values` argument contains multiple property-value pairs that will be
     * written to the Database together. Each child property can either be a simple
     * property (for example, "name") or a relative path (for example, "name/first")
     * from the current location to the data to update.
     *
     * As opposed to the `set()` method, `update()` can be use to selectively update
     * only the referenced properties at the current location (instead of replacing
     * all the child properties at the current location).
     *
     * @param values - Object containing multiple values.
     * @returns Resolves when synchronization to the Database is complete.
     */
    OnDisconnect.prototype.update = function (values) {
        validateWritablePath('OnDisconnect.update', this._path);
        validateFirebaseMergeDataArg('OnDisconnect.update', values, this._path, false);
        var deferred = new util.Deferred();
        repoOnDisconnectUpdate(this._repo, this._path, values, deferred.wrapCallback(function () { }));
        return deferred.promise;
    };
    return OnDisconnect;
}());

/**
 * @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.
 */
/**
 * @internal
 */
var QueryImpl = /** @class */ (function () {
    /**
     * @hideconstructor
     */
    function QueryImpl(_repo, _path, _queryParams, _orderByCalled) {
        this._repo = _repo;
        this._path = _path;
        this._queryParams = _queryParams;
        this._orderByCalled = _orderByCalled;
    }
    Object.defineProperty(QueryImpl.prototype, "key", {
        get: function () {
            if (pathIsEmpty(this._path)) {
                return null;
            }
            else {
                return pathGetBack(this._path);
            }
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(QueryImpl.prototype, "ref", {
        get: function () {
            return new ReferenceImpl(this._repo, this._path);
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(QueryImpl.prototype, "_queryIdentifier", {
        get: function () {
            var obj = queryParamsGetQueryObject(this._queryParams);
            var id = ObjectToUniqueKey(obj);
            return id === '{}' ? 'default' : id;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(QueryImpl.prototype, "_queryObject", {
        /**
         * An object representation of the query parameters used by this Query.
         */
        get: function () {
            return queryParamsGetQueryObject(this._queryParams);
        },
        enumerable: false,
        configurable: true
    });
    QueryImpl.prototype.isEqual = function (other) {
        other = util.getModularInstance(other);
        if (!(other instanceof QueryImpl)) {
            return false;
        }
        var sameRepo = this._repo === other._repo;
        var samePath = pathEquals(this._path, other._path);
        var sameQueryIdentifier = this._queryIdentifier === other._queryIdentifier;
        return sameRepo && samePath && sameQueryIdentifier;
    };
    QueryImpl.prototype.toJSON = function () {
        return this.toString();
    };
    QueryImpl.prototype.toString = function () {
        return this._repo.toString() + pathToUrlEncodedString(this._path);
    };
    return QueryImpl;
}());
/**
 * Validates that no other order by call has been made
 */
function validateNoPreviousOrderByCall(query, fnName) {
    if (query._orderByCalled === true) {
        throw new Error(fnName + ": You can't combine multiple orderBy calls.");
    }
}
/**
 * Validates start/end values for queries.
 */
function validateQueryEndpoints(params) {
    var startNode = null;
    var endNode = null;
    if (params.hasStart()) {
        startNode = params.getIndexStartValue();
    }
    if (params.hasEnd()) {
        endNode = params.getIndexEndValue();
    }
    if (params.getIndex() === KEY_INDEX) {
        var tooManyArgsError = 'Query: When ordering by key, you may only pass one argument to ' +
            'startAt(), endAt(), or equalTo().';
        var wrongArgTypeError = 'Query: When ordering by key, the argument passed to startAt(), startAfter(), ' +
            'endAt(), endBefore(), or equalTo() must be a string.';
        if (params.hasStart()) {
            var startName = params.getIndexStartName();
            if (startName !== MIN_NAME) {
                throw new Error(tooManyArgsError);
            }
            else if (typeof startNode !== 'string') {
                throw new Error(wrongArgTypeError);
            }
        }
        if (params.hasEnd()) {
            var endName = params.getIndexEndName();
            if (endName !== MAX_NAME) {
                throw new Error(tooManyArgsError);
            }
            else if (typeof endNode !== 'string') {
                throw new Error(wrongArgTypeError);
            }
        }
    }
    else if (params.getIndex() === PRIORITY_INDEX) {
        if ((startNode != null && !isValidPriority(startNode)) ||
            (endNode != null && !isValidPriority(endNode))) {
            throw new Error('Query: When ordering by priority, the first argument passed to startAt(), ' +
                'startAfter() endAt(), endBefore(), or equalTo() must be a valid priority value ' +
                '(null, a number, or a string).');
        }
    }
    else {
        util.assert(params.getIndex() instanceof PathIndex ||
            params.getIndex() === VALUE_INDEX, 'unknown index type.');
        if ((startNode != null && typeof startNode === 'object') ||
            (endNode != null && typeof endNode === 'object')) {
            throw new Error('Query: First argument passed to startAt(), startAfter(), endAt(), endBefore(), or ' +
                'equalTo() cannot be an object.');
        }
    }
}
/**
 * Validates that limit* has been called with the correct combination of parameters
 */
function validateLimit(params) {
    if (params.hasStart() &&
        params.hasEnd() &&
        params.hasLimit() &&
        !params.hasAnchoredLimit()) {
        throw new Error("Query: Can't combine startAt(), startAfter(), endAt(), endBefore(), and limit(). Use " +
            'limitToFirst() or limitToLast() instead.');
    }
}
/**
 * @internal
 */
var ReferenceImpl = /** @class */ (function (_super) {
    tslib.__extends(ReferenceImpl, _super);
    /** @hideconstructor */
    function ReferenceImpl(repo, path) {
        return _super.call(this, repo, path, new QueryParams(), false) || this;
    }
    Object.defineProperty(ReferenceImpl.prototype, "parent", {
        get: function () {
            var parentPath = pathParent(this._path);
            return parentPath === null
                ? null
                : new ReferenceImpl(this._repo, parentPath);
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(ReferenceImpl.prototype, "root", {
        get: function () {
            var ref = this;
            while (ref.parent !== null) {
                ref = ref.parent;
            }
            return ref;
        },
        enumerable: false,
        configurable: true
    });
    return ReferenceImpl;
}(QueryImpl));
/**
 * A `DataSnapshot` contains data from a Database location.
 *
 * Any time you read data from the Database, you receive the data as a
 * `DataSnapshot`. A `DataSnapshot` is passed to the event callbacks you attach
 * with `on()` or `once()`. You can extract the contents of the snapshot as a
 * JavaScript object by calling the `val()` method. Alternatively, you can
 * traverse into the snapshot by calling `child()` to return child snapshots
 * (which you could then call `val()` on).
 *
 * A `DataSnapshot` is an efficiently generated, immutable copy of the data at
 * a Database location. It cannot be modified and will never change (to modify
 * data, you always call the `set()` method on a `Reference` directly).
 */
var DataSnapshot = /** @class */ (function () {
    /**
     * @param _node - A SnapshotNode to wrap.
     * @param ref - The location this snapshot came from.
     * @param _index - The iteration order for this snapshot
     * @hideconstructor
     */
    function DataSnapshot(_node, 
    /**
     * The location of this DataSnapshot.
     */
    ref, _index) {
        this._node = _node;
        this.ref = ref;
        this._index = _index;
    }
    Object.defineProperty(DataSnapshot.prototype, "priority", {
        /**
         * Gets the priority value of the data in this `DataSnapshot`.
         *
         * Applications need not use priority but can order collections by
         * ordinary properties (see
         * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data |Sorting and filtering data}
         * ).
         */
        get: function () {
            // typecast here because we never return deferred values or internal priorities (MAX_PRIORITY)
            return this._node.getPriority().val();
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(DataSnapshot.prototype, "key", {
        /**
         * The key (last part of the path) of the location of this `DataSnapshot`.
         *
         * The last token in a Database location is considered its key. For example,
         * "ada" is the key for the /users/ada/ node. Accessing the key on any
         * `DataSnapshot` will return the key for the location that generated it.
         * However, accessing the key on the root URL of a Database will return
         * `null`.
         */
        get: function () {
            return this.ref.key;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(DataSnapshot.prototype, "size", {
        /** Returns the number of child properties of this `DataSnapshot`. */
        get: function () {
            return this._node.numChildren();
        },
        enumerable: false,
        configurable: true
    });
    /**
     * Gets another `DataSnapshot` for the location at the specified relative path.
     *
     * Passing a relative path to the `child()` method of a DataSnapshot returns
     * another `DataSnapshot` for the location at the specified relative path. The
     * relative path can either be a simple child name (for example, "ada") or a
     * deeper, slash-separated path (for example, "ada/name/first"). If the child
     * location has no data, an empty `DataSnapshot` (that is, a `DataSnapshot`
     * whose value is `null`) is returned.
     *
     * @param path - A relative path to the location of child data.
     */
    DataSnapshot.prototype.child = function (path) {
        var childPath = new Path(path);
        var childRef = child(this.ref, path);
        return new DataSnapshot(this._node.getChild(childPath), childRef, PRIORITY_INDEX);
    };
    /**
     * Returns true if this `DataSnapshot` contains any data. It is slightly more
     * efficient than using `snapshot.val() !== null`.
     */
    DataSnapshot.prototype.exists = function () {
        return !this._node.isEmpty();
    };
    /**
     * Exports the entire contents of the DataSnapshot as a JavaScript object.
     *
     * The `exportVal()` method is similar to `val()`, except priority information
     * is included (if available), making it suitable for backing up your data.
     *
     * @returns The DataSnapshot's contents as a JavaScript value (Object,
     *   Array, string, number, boolean, or `null`).
     */
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    DataSnapshot.prototype.exportVal = function () {
        return this._node.val(true);
    };
    /**
     * Enumerates the top-level children in the `DataSnapshot`.
     *
     * Because of the way JavaScript objects work, the ordering of data in the
     * JavaScript object returned by `val()` is not guaranteed to match the
     * ordering on the server nor the ordering of `onChildAdded()` events. That is
     * where `forEach()` comes in handy. It guarantees the children of a
     * `DataSnapshot` will be iterated in their query order.
     *
     * If no explicit `orderBy*()` method is used, results are returned
     * ordered by key (unless priorities are used, in which case, results are
     * returned by priority).
     *
     * @param action - A function that will be called for each child DataSnapshot.
     * The callback can return true to cancel further enumeration.
     * @returns true if enumeration was canceled due to your callback returning
     * true.
     */
    DataSnapshot.prototype.forEach = function (action) {
        var _this = this;
        if (this._node.isLeafNode()) {
            return false;
        }
        var childrenNode = this._node;
        // Sanitize the return value to a boolean. ChildrenNode.forEachChild has a weird return type...
        return !!childrenNode.forEachChild(this._index, function (key, node) {
            return action(new DataSnapshot(node, child(_this.ref, key), PRIORITY_INDEX));
        });
    };
    /**
     * Returns true if the specified child path has (non-null) data.
     *
     * @param path - A relative path to the location of a potential child.
     * @returns `true` if data exists at the specified child path; else
     *  `false`.
     */
    DataSnapshot.prototype.hasChild = function (path) {
        var childPath = new Path(path);
        return !this._node.getChild(childPath).isEmpty();
    };
    /**
     * Returns whether or not the `DataSnapshot` has any non-`null` child
     * properties.
     *
     * You can use `hasChildren()` to determine if a `DataSnapshot` has any
     * children. If it does, you can enumerate them using `forEach()`. If it
     * doesn't, then either this snapshot contains a primitive value (which can be
     * retrieved with `val()`) or it is empty (in which case, `val()` will return
     * `null`).
     *
     * @returns true if this snapshot has any children; else false.
     */
    DataSnapshot.prototype.hasChildren = function () {
        if (this._node.isLeafNode()) {
            return false;
        }
        else {
            return !this._node.isEmpty();
        }
    };
    /**
     * Returns a JSON-serializable representation of this object.
     */
    DataSnapshot.prototype.toJSON = function () {
        return this.exportVal();
    };
    /**
     * Extracts a JavaScript value from a `DataSnapshot`.
     *
     * Depending on the data in a `DataSnapshot`, the `val()` method may return a
     * scalar type (string, number, or boolean), an array, or an object. It may
     * also return null, indicating that the `DataSnapshot` is empty (contains no
     * data).
     *
     * @returns The DataSnapshot's contents as a JavaScript value (Object,
     *   Array, string, number, boolean, or `null`).
     */
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    DataSnapshot.prototype.val = function () {
        return this._node.val();
    };
    return DataSnapshot;
}());
/**
 *
 * Returns a `Reference` representing the location in the Database
 * corresponding to the provided path. If no path is provided, the `Reference`
 * will point to the root of the Database.
 *
 * @param db - The database instance to obtain a reference for.
 * @param path - Optional path representing the location the returned
 *   `Reference` will point. If not provided, the returned `Reference` will
 *   point to the root of the Database.
 * @returns If a path is provided, a `Reference`
 *   pointing to the provided path. Otherwise, a `Reference` pointing to the
 *   root of the Database.
 */
function ref(db, path) {
    db = util.getModularInstance(db);
    db._checkNotDeleted('ref');
    return path !== undefined ? child(db._root, path) : db._root;
}
/**
 * Returns a `Reference` representing the location in the Database
 * corresponding to the provided Firebase URL.
 *
 * An exception is thrown if the URL is not a valid Firebase Database URL or it
 * has a different domain than the current `Database` instance.
 *
 * Note that all query parameters (`orderBy`, `limitToLast`, etc.) are ignored
 * and are not applied to the returned `Reference`.
 *
 * @param db - The database instance to obtain a reference for.
 * @param url - The Firebase URL at which the returned `Reference` will
 *   point.
 * @returns A `Reference` pointing to the provided
 *   Firebase URL.
 */
function refFromURL(db, url) {
    db = util.getModularInstance(db);
    db._checkNotDeleted('refFromURL');
    var parsedURL = parseRepoInfo(url, db._repo.repoInfo_.nodeAdmin);
    validateUrl('refFromURL', parsedURL);
    var repoInfo = parsedURL.repoInfo;
    if (!db._repo.repoInfo_.isCustomHost() &&
        repoInfo.host !== db._repo.repoInfo_.host) {
        fatal('refFromURL' +
            ': Host name does not match the current database: ' +
            '(found ' +
            repoInfo.host +
            ' but expected ' +
            db._repo.repoInfo_.host +
            ')');
    }
    return ref(db, parsedURL.path.toString());
}
/**
 * Gets a `Reference` for the location at the specified relative path.
 *
 * The relative path can either be a simple child name (for example, "ada") or
 * a deeper slash-separated path (for example, "ada/name/first").
 *
 * @param parent - The parent location.
 * @param path - A relative path from this location to the desired child
 *   location.
 * @returns The specified child location.
 */
function child(parent, path) {
    parent = util.getModularInstance(parent);
    if (pathGetFront(parent._path) === null) {
        validateRootPathString('child', 'path', path, false);
    }
    else {
        validatePathString('child', 'path', path, false);
    }
    return new ReferenceImpl(parent._repo, pathChild(parent._path, path));
}
/**
 * Returns an `OnDisconnect` object - see
 * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
 * for more information on how to use it.
 *
 * @param ref - The reference to add OnDisconnect triggers for.
 */
function onDisconnect(ref) {
    ref = util.getModularInstance(ref);
    return new OnDisconnect(ref._repo, ref._path);
}
/**
 * Generates a new child location using a unique key and returns its
 * `Reference`.
 *
 * This is the most common pattern for adding data to a collection of items.
 *
 * If you provide a value to `push()`, the value is written to the
 * generated location. If you don't pass a value, nothing is written to the
 * database and the child remains empty (but you can use the `Reference`
 * elsewhere).
 *
 * The unique keys generated by `push()` are ordered by the current time, so the
 * resulting list of items is chronologically sorted. The keys are also
 * designed to be unguessable (they contain 72 random bits of entropy).
 *
 * See {@link https://firebase.google.com/docs/database/web/lists-of-data#append_to_a_list_of_data | Append to a list of data}.
 * See {@link https://firebase.googleblog.com/2015/02/the-2120-ways-to-ensure-unique_68.html | The 2^120 Ways to Ensure Unique Identifiers}.
 *
 * @param parent - The parent location.
 * @param value - Optional value to be written at the generated location.
 * @returns Combined `Promise` and `Reference`; resolves when write is complete,
 * but can be used immediately as the `Reference` to the child location.
 */
function push(parent, value) {
    parent = util.getModularInstance(parent);
    validateWritablePath('push', parent._path);
    validateFirebaseDataArg('push', value, parent._path, true);
    var now = repoServerTime(parent._repo);
    var name = nextPushId(now);
    // push() returns a ThennableReference whose promise is fulfilled with a
    // regular Reference. We use child() to create handles to two different
    // references. The first is turned into a ThennableReference below by adding
    // then() and catch() methods and is used as the return value of push(). The
    // second remains a regular Reference and is used as the fulfilled value of
    // the first ThennableReference.
    var thennablePushRef = child(parent, name);
    var pushRef = child(parent, name);
    var promise;
    if (value != null) {
        promise = set(pushRef, value).then(function () { return pushRef; });
    }
    else {
        promise = Promise.resolve(pushRef);
    }
    thennablePushRef.then = promise.then.bind(promise);
    thennablePushRef.catch = promise.then.bind(promise, undefined);
    return thennablePushRef;
}
/**
 * Removes the data at this Database location.
 *
 * Any data at child locations will also be deleted.
 *
 * The effect of the remove will be visible immediately and the corresponding
 * event 'value' will be triggered. Synchronization of the remove to the
 * Firebase servers will also be started, and the returned Promise will resolve
 * when complete. If provided, the onComplete callback will be called
 * asynchronously after synchronization has finished.
 *
 * @param ref - The location to remove.
 * @returns Resolves when remove on server is complete.
 */
function remove(ref) {
    validateWritablePath('remove', ref._path);
    return set(ref, null);
}
/**
 * Writes data to this Database location.
 *
 * This will overwrite any data at this location and all child locations.
 *
 * The effect of the write will be visible immediately, and the corresponding
 * events ("value", "child_added", etc.) will be triggered. Synchronization of
 * the data to the Firebase servers will also be started, and the returned
 * Promise will resolve when complete. If provided, the `onComplete` callback
 * will be called asynchronously after synchronization has finished.
 *
 * Passing `null` for the new value is equivalent to calling `remove()`; namely,
 * all data at this location and all child locations will be deleted.
 *
 * `set()` will remove any priority stored at this location, so if priority is
 * meant to be preserved, you need to use `setWithPriority()` instead.
 *
 * Note that modifying data with `set()` will cancel any pending transactions
 * at that location, so extreme care should be taken if mixing `set()` and
 * `transaction()` to modify the same data.
 *
 * A single `set()` will generate a single "value" event at the location where
 * the `set()` was performed.
 *
 * @param ref - The location to write to.
 * @param value - The value to be written (string, number, boolean, object,
 *   array, or null).
 * @returns Resolves when write to server is complete.
 */
function set(ref, value) {
    ref = util.getModularInstance(ref);
    validateWritablePath('set', ref._path);
    validateFirebaseDataArg('set', value, ref._path, false);
    var deferred = new util.Deferred();
    repoSetWithPriority(ref._repo, ref._path, value, 
    /*priority=*/ null, deferred.wrapCallback(function () { }));
    return deferred.promise;
}
/**
 * Sets a priority for the data at this Database location.
 *
 * Applications need not use priority but can order collections by
 * ordinary properties (see
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}
 * ).
 *
 * @param ref - The location to write to.
 * @param priority - The priority to be written (string, number, or null).
 * @returns Resolves when write to server is complete.
 */
function setPriority(ref, priority) {
    ref = util.getModularInstance(ref);
    validateWritablePath('setPriority', ref._path);
    validatePriority('setPriority', priority, false);
    var deferred = new util.Deferred();
    repoSetWithPriority(ref._repo, pathChild(ref._path, '.priority'), priority, null, deferred.wrapCallback(function () { }));
    return deferred.promise;
}
/**
 * Writes data the Database location. Like `set()` but also specifies the
 * priority for that data.
 *
 * Applications need not use priority but can order collections by
 * ordinary properties (see
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}
 * ).
 *
 * @param ref - The location to write to.
 * @param value - The value to be written (string, number, boolean, object,
 *   array, or null).
 * @param priority - The priority to be written (string, number, or null).
 * @returns Resolves when write to server is complete.
 */
function setWithPriority(ref, value, priority) {
    validateWritablePath('setWithPriority', ref._path);
    validateFirebaseDataArg('setWithPriority', value, ref._path, false);
    validatePriority('setWithPriority', priority, false);
    if (ref.key === '.length' || ref.key === '.keys') {
        throw 'setWithPriority failed: ' + ref.key + ' is a read-only object.';
    }
    var deferred = new util.Deferred();
    repoSetWithPriority(ref._repo, ref._path, value, priority, deferred.wrapCallback(function () { }));
    return deferred.promise;
}
/**
 * Writes multiple values to the Database at once.
 *
 * The `values` argument contains multiple property-value pairs that will be
 * written to the Database together. Each child property can either be a simple
 * property (for example, "name") or a relative path (for example,
 * "name/first") from the current location to the data to update.
 *
 * As opposed to the `set()` method, `update()` can be use to selectively update
 * only the referenced properties at the current location (instead of replacing
 * all the child properties at the current location).
 *
 * The effect of the write will be visible immediately, and the corresponding
 * events ('value', 'child_added', etc.) will be triggered. Synchronization of
 * the data to the Firebase servers will also be started, and the returned
 * Promise will resolve when complete. If provided, the `onComplete` callback
 * will be called asynchronously after synchronization has finished.
 *
 * A single `update()` will generate a single "value" event at the location
 * where the `update()` was performed, regardless of how many children were
 * modified.
 *
 * Note that modifying data with `update()` will cancel any pending
 * transactions at that location, so extreme care should be taken if mixing
 * `update()` and `transaction()` to modify the same data.
 *
 * Passing `null` to `update()` will remove the data at this location.
 *
 * See
 * {@link https://firebase.googleblog.com/2015/09/introducing-multi-location-updates-and_86.html | Introducing multi-location updates and more}.
 *
 * @param ref - The location to write to.
 * @param values - Object containing multiple values.
 * @returns Resolves when update on server is complete.
 */
function update(ref, values) {
    validateFirebaseMergeDataArg('update', values, ref._path, false);
    var deferred = new util.Deferred();
    repoUpdate(ref._repo, ref._path, values, deferred.wrapCallback(function () { }));
    return deferred.promise;
}
/**
 * Gets the most up-to-date result for this query.
 *
 * @param query - The query to run.
 * @returns A `Promise` which resolves to the resulting DataSnapshot if a value is
 * available, or rejects if the client is unable to return a value (e.g., if the
 * server is unreachable and there is nothing cached).
 */
function get(query) {
    query = util.getModularInstance(query);
    var callbackContext = new CallbackContext(function () { });
    var container = new ValueEventRegistration(callbackContext);
    return repoGetValue(query._repo, query, container).then(function (node) {
        return new DataSnapshot(node, new ReferenceImpl(query._repo, query._path), query._queryParams.getIndex());
    });
}
/**
 * Represents registration for 'value' events.
 */
var ValueEventRegistration = /** @class */ (function () {
    function ValueEventRegistration(callbackContext) {
        this.callbackContext = callbackContext;
    }
    ValueEventRegistration.prototype.respondsTo = function (eventType) {
        return eventType === 'value';
    };
    ValueEventRegistration.prototype.createEvent = function (change, query) {
        var index = query._queryParams.getIndex();
        return new DataEvent('value', this, new DataSnapshot(change.snapshotNode, new ReferenceImpl(query._repo, query._path), index));
    };
    ValueEventRegistration.prototype.getEventRunner = function (eventData) {
        var _this = this;
        if (eventData.getEventType() === 'cancel') {
            return function () {
                return _this.callbackContext.onCancel(eventData.error);
            };
        }
        else {
            return function () {
                return _this.callbackContext.onValue(eventData.snapshot, null);
            };
        }
    };
    ValueEventRegistration.prototype.createCancelEvent = function (error, path) {
        if (this.callbackContext.hasCancelCallback) {
            return new CancelEvent(this, error, path);
        }
        else {
            return null;
        }
    };
    ValueEventRegistration.prototype.matches = function (other) {
        if (!(other instanceof ValueEventRegistration)) {
            return false;
        }
        else if (!other.callbackContext || !this.callbackContext) {
            // If no callback specified, we consider it to match any callback.
            return true;
        }
        else {
            return other.callbackContext.matches(this.callbackContext);
        }
    };
    ValueEventRegistration.prototype.hasAnyCallback = function () {
        return this.callbackContext !== null;
    };
    return ValueEventRegistration;
}());
/**
 * Represents the registration of a child_x event.
 */
var ChildEventRegistration = /** @class */ (function () {
    function ChildEventRegistration(eventType, callbackContext) {
        this.eventType = eventType;
        this.callbackContext = callbackContext;
    }
    ChildEventRegistration.prototype.respondsTo = function (eventType) {
        var eventToCheck = eventType === 'children_added' ? 'child_added' : eventType;
        eventToCheck =
            eventToCheck === 'children_removed' ? 'child_removed' : eventToCheck;
        return this.eventType === eventToCheck;
    };
    ChildEventRegistration.prototype.createCancelEvent = function (error, path) {
        if (this.callbackContext.hasCancelCallback) {
            return new CancelEvent(this, error, path);
        }
        else {
            return null;
        }
    };
    ChildEventRegistration.prototype.createEvent = function (change, query) {
        util.assert(change.childName != null, 'Child events should have a childName.');
        var childRef = child(new ReferenceImpl(query._repo, query._path), change.childName);
        var index = query._queryParams.getIndex();
        return new DataEvent(change.type, this, new DataSnapshot(change.snapshotNode, childRef, index), change.prevName);
    };
    ChildEventRegistration.prototype.getEventRunner = function (eventData) {
        var _this = this;
        if (eventData.getEventType() === 'cancel') {
            return function () {
                return _this.callbackContext.onCancel(eventData.error);
            };
        }
        else {
            return function () {
                return _this.callbackContext.onValue(eventData.snapshot, eventData.prevName);
            };
        }
    };
    ChildEventRegistration.prototype.matches = function (other) {
        if (other instanceof ChildEventRegistration) {
            return (this.eventType === other.eventType &&
                (!this.callbackContext ||
                    !other.callbackContext ||
                    this.callbackContext.matches(other.callbackContext)));
        }
        return false;
    };
    ChildEventRegistration.prototype.hasAnyCallback = function () {
        return !!this.callbackContext;
    };
    return ChildEventRegistration;
}());
function addEventListener(query, eventType, callback, cancelCallbackOrListenOptions, options) {
    var cancelCallback;
    if (typeof cancelCallbackOrListenOptions === 'object') {
        cancelCallback = undefined;
        options = cancelCallbackOrListenOptions;
    }
    if (typeof cancelCallbackOrListenOptions === 'function') {
        cancelCallback = cancelCallbackOrListenOptions;
    }
    if (options && options.onlyOnce) {
        var userCallback_1 = callback;
        var onceCallback = function (dataSnapshot, previousChildName) {
            repoRemoveEventCallbackForQuery(query._repo, query, container);
            userCallback_1(dataSnapshot, previousChildName);
        };
        onceCallback.userCallback = callback.userCallback;
        onceCallback.context = callback.context;
        callback = onceCallback;
    }
    var callbackContext = new CallbackContext(callback, cancelCallback || undefined);
    var container = eventType === 'value'
        ? new ValueEventRegistration(callbackContext)
        : new ChildEventRegistration(eventType, callbackContext);
    repoAddEventCallbackForQuery(query._repo, query, container);
    return function () { return repoRemoveEventCallbackForQuery(query._repo, query, container); };
}
function onValue(query, callback, cancelCallbackOrListenOptions, options) {
    return addEventListener(query, 'value', callback, cancelCallbackOrListenOptions, options);
}
function onChildAdded(query, callback, cancelCallbackOrListenOptions, options) {
    return addEventListener(query, 'child_added', callback, cancelCallbackOrListenOptions, options);
}
function onChildChanged(query, callback, cancelCallbackOrListenOptions, options) {
    return addEventListener(query, 'child_changed', callback, cancelCallbackOrListenOptions, options);
}
function onChildMoved(query, callback, cancelCallbackOrListenOptions, options) {
    return addEventListener(query, 'child_moved', callback, cancelCallbackOrListenOptions, options);
}
function onChildRemoved(query, callback, cancelCallbackOrListenOptions, options) {
    return addEventListener(query, 'child_removed', callback, cancelCallbackOrListenOptions, options);
}
/**
 * Detaches a callback previously attached with the corresponding `on*()` (`onValue`, `onChildAdded`) listener.
 * Note: This is not the recommended way to remove a listener. Instead, please use the returned callback function from
 * the respective `on*` callbacks.
 *
 * Detach a callback previously attached with `on*()`. Calling `off()` on a parent listener
 * will not automatically remove listeners registered on child nodes, `off()`
 * must also be called on any child listeners to remove the callback.
 *
 * If a callback is not specified, all callbacks for the specified eventType
 * will be removed. Similarly, if no eventType is specified, all callbacks
 * for the `Reference` will be removed.
 *
 * Individual listeners can also be removed by invoking their unsubscribe
 * callbacks.
 *
 * @param query - The query that the listener was registered with.
 * @param eventType - One of the following strings: "value", "child_added",
 * "child_changed", "child_removed", or "child_moved." If omitted, all callbacks
 * for the `Reference` will be removed.
 * @param callback - The callback function that was passed to `on()` or
 * `undefined` to remove all callbacks.
 */
function off(query, eventType, callback) {
    var container = null;
    var expCallback = callback ? new CallbackContext(callback) : null;
    if (eventType === 'value') {
        container = new ValueEventRegistration(expCallback);
    }
    else if (eventType) {
        container = new ChildEventRegistration(eventType, expCallback);
    }
    repoRemoveEventCallbackForQuery(query._repo, query, container);
}
/**
 * A `QueryConstraint` is used to narrow the set of documents returned by a
 * Database query. `QueryConstraint`s are created by invoking {@link endAt},
 * {@link endBefore}, {@link startAt}, {@link startAfter}, {@link
 * limitToFirst}, {@link limitToLast}, {@link orderByChild},
 * {@link orderByChild}, {@link orderByKey} , {@link orderByPriority} ,
 * {@link orderByValue}  or {@link equalTo} and
 * can then be passed to {@link query} to create a new query instance that
 * also contains this `QueryConstraint`.
 */
var QueryConstraint = /** @class */ (function () {
    function QueryConstraint() {
    }
    return QueryConstraint;
}());
var QueryEndAtConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryEndAtConstraint, _super);
    function QueryEndAtConstraint(_value, _key) {
        var _this = _super.call(this) || this;
        _this._value = _value;
        _this._key = _key;
        return _this;
    }
    QueryEndAtConstraint.prototype._apply = function (query) {
        validateFirebaseDataArg('endAt', this._value, query._path, true);
        var newParams = queryParamsEndAt(query._queryParams, this._value, this._key);
        validateLimit(newParams);
        validateQueryEndpoints(newParams);
        if (query._queryParams.hasEnd()) {
            throw new Error('endAt: Starting point was already set (by another call to endAt, ' +
                'endBefore or equalTo).');
        }
        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);
    };
    return QueryEndAtConstraint;
}(QueryConstraint));
/**
 * Creates a `QueryConstraint` with the specified ending point.
 *
 * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
 * allows you to choose arbitrary starting and ending points for your queries.
 *
 * The ending point is inclusive, so children with exactly the specified value
 * will be included in the query. The optional key argument can be used to
 * further limit the range of the query. If it is specified, then children that
 * have exactly the specified value must also have a key name less than or equal
 * to the specified key.
 *
 * You can read more about `endAt()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
 *
 * @param value - The value to end at. The argument type depends on which
 * `orderBy*()` function was used in this query. Specify a value that matches
 * the `orderBy*()` type. When used in combination with `orderByKey()`, the
 * value must be a string.
 * @param key - The child key to end at, among the children with the previously
 * specified priority. This argument is only allowed if ordering by child,
 * value, or priority.
 */
function endAt(value, key) {
    validateKey('endAt', 'key', key, true);
    return new QueryEndAtConstraint(value, key);
}
var QueryEndBeforeConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryEndBeforeConstraint, _super);
    function QueryEndBeforeConstraint(_value, _key) {
        var _this = _super.call(this) || this;
        _this._value = _value;
        _this._key = _key;
        return _this;
    }
    QueryEndBeforeConstraint.prototype._apply = function (query) {
        validateFirebaseDataArg('endBefore', this._value, query._path, false);
        var newParams = queryParamsEndBefore(query._queryParams, this._value, this._key);
        validateLimit(newParams);
        validateQueryEndpoints(newParams);
        if (query._queryParams.hasEnd()) {
            throw new Error('endBefore: Starting point was already set (by another call to endAt, ' +
                'endBefore or equalTo).');
        }
        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);
    };
    return QueryEndBeforeConstraint;
}(QueryConstraint));
/**
 * Creates a `QueryConstraint` with the specified ending point (exclusive).
 *
 * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
 * allows you to choose arbitrary starting and ending points for your queries.
 *
 * The ending point is exclusive. If only a value is provided, children
 * with a value less than the specified value will be included in the query.
 * If a key is specified, then children must have a value less than or equal
 * to the specified value and a key name less than the specified key.
 *
 * @param value - The value to end before. The argument type depends on which
 * `orderBy*()` function was used in this query. Specify a value that matches
 * the `orderBy*()` type. When used in combination with `orderByKey()`, the
 * value must be a string.
 * @param key - The child key to end before, among the children with the
 * previously specified priority. This argument is only allowed if ordering by
 * child, value, or priority.
 */
function endBefore(value, key) {
    validateKey('endBefore', 'key', key, true);
    return new QueryEndBeforeConstraint(value, key);
}
var QueryStartAtConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryStartAtConstraint, _super);
    function QueryStartAtConstraint(_value, _key) {
        var _this = _super.call(this) || this;
        _this._value = _value;
        _this._key = _key;
        return _this;
    }
    QueryStartAtConstraint.prototype._apply = function (query) {
        validateFirebaseDataArg('startAt', this._value, query._path, true);
        var newParams = queryParamsStartAt(query._queryParams, this._value, this._key);
        validateLimit(newParams);
        validateQueryEndpoints(newParams);
        if (query._queryParams.hasStart()) {
            throw new Error('startAt: Starting point was already set (by another call to startAt, ' +
                'startBefore or equalTo).');
        }
        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);
    };
    return QueryStartAtConstraint;
}(QueryConstraint));
/**
 * Creates a `QueryConstraint` with the specified starting point.
 *
 * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
 * allows you to choose arbitrary starting and ending points for your queries.
 *
 * The starting point is inclusive, so children with exactly the specified value
 * will be included in the query. The optional key argument can be used to
 * further limit the range of the query. If it is specified, then children that
 * have exactly the specified value must also have a key name greater than or
 * equal to the specified key.
 *
 * You can read more about `startAt()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
 *
 * @param value - The value to start at. The argument type depends on which
 * `orderBy*()` function was used in this query. Specify a value that matches
 * the `orderBy*()` type. When used in combination with `orderByKey()`, the
 * value must be a string.
 * @param key - The child key to start at. This argument is only allowed if
 * ordering by child, value, or priority.
 */
function startAt(value, key) {
    if (value === void 0) { value = null; }
    validateKey('startAt', 'key', key, true);
    return new QueryStartAtConstraint(value, key);
}
var QueryStartAfterConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryStartAfterConstraint, _super);
    function QueryStartAfterConstraint(_value, _key) {
        var _this = _super.call(this) || this;
        _this._value = _value;
        _this._key = _key;
        return _this;
    }
    QueryStartAfterConstraint.prototype._apply = function (query) {
        validateFirebaseDataArg('startAfter', this._value, query._path, false);
        var newParams = queryParamsStartAfter(query._queryParams, this._value, this._key);
        validateLimit(newParams);
        validateQueryEndpoints(newParams);
        if (query._queryParams.hasStart()) {
            throw new Error('startAfter: Starting point was already set (by another call to startAt, ' +
                'startAfter, or equalTo).');
        }
        return new QueryImpl(query._repo, query._path, newParams, query._orderByCalled);
    };
    return QueryStartAfterConstraint;
}(QueryConstraint));
/**
 * Creates a `QueryConstraint` with the specified starting point (exclusive).
 *
 * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
 * allows you to choose arbitrary starting and ending points for your queries.
 *
 * The starting point is exclusive. If only a value is provided, children
 * with a value greater than the specified value will be included in the query.
 * If a key is specified, then children must have a value greater than or equal
 * to the specified value and a a key name greater than the specified key.
 *
 * @param value - The value to start after. The argument type depends on which
 * `orderBy*()` function was used in this query. Specify a value that matches
 * the `orderBy*()` type. When used in combination with `orderByKey()`, the
 * value must be a string.
 * @param key - The child key to start after. This argument is only allowed if
 * ordering by child, value, or priority.
 */
function startAfter(value, key) {
    validateKey('startAfter', 'key', key, true);
    return new QueryStartAfterConstraint(value, key);
}
var QueryLimitToFirstConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryLimitToFirstConstraint, _super);
    function QueryLimitToFirstConstraint(_limit) {
        var _this = _super.call(this) || this;
        _this._limit = _limit;
        return _this;
    }
    QueryLimitToFirstConstraint.prototype._apply = function (query) {
        if (query._queryParams.hasLimit()) {
            throw new Error('limitToFirst: Limit was already set (by another call to limitToFirst ' +
                'or limitToLast).');
        }
        return new QueryImpl(query._repo, query._path, queryParamsLimitToFirst(query._queryParams, this._limit), query._orderByCalled);
    };
    return QueryLimitToFirstConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that if limited to the first specific number
 * of children.
 *
 * The `limitToFirst()` method is used to set a maximum number of children to be
 * synced for a given callback. If we set a limit of 100, we will initially only
 * receive up to 100 `child_added` events. If we have fewer than 100 messages
 * stored in our Database, a `child_added` event will fire for each message.
 * However, if we have over 100 messages, we will only receive a `child_added`
 * event for the first 100 ordered messages. As items change, we will receive
 * `child_removed` events for each item that drops out of the active list so
 * that the total number stays at 100.
 *
 * You can read more about `limitToFirst()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
 *
 * @param limit - The maximum number of nodes to include in this query.
 */
function limitToFirst(limit) {
    if (typeof limit !== 'number' || Math.floor(limit) !== limit || limit <= 0) {
        throw new Error('limitToFirst: First argument must be a positive integer.');
    }
    return new QueryLimitToFirstConstraint(limit);
}
var QueryLimitToLastConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryLimitToLastConstraint, _super);
    function QueryLimitToLastConstraint(_limit) {
        var _this = _super.call(this) || this;
        _this._limit = _limit;
        return _this;
    }
    QueryLimitToLastConstraint.prototype._apply = function (query) {
        if (query._queryParams.hasLimit()) {
            throw new Error('limitToLast: Limit was already set (by another call to limitToFirst ' +
                'or limitToLast).');
        }
        return new QueryImpl(query._repo, query._path, queryParamsLimitToLast(query._queryParams, this._limit), query._orderByCalled);
    };
    return QueryLimitToLastConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that is limited to return only the last
 * specified number of children.
 *
 * The `limitToLast()` method is used to set a maximum number of children to be
 * synced for a given callback. If we set a limit of 100, we will initially only
 * receive up to 100 `child_added` events. If we have fewer than 100 messages
 * stored in our Database, a `child_added` event will fire for each message.
 * However, if we have over 100 messages, we will only receive a `child_added`
 * event for the last 100 ordered messages. As items change, we will receive
 * `child_removed` events for each item that drops out of the active list so
 * that the total number stays at 100.
 *
 * You can read more about `limitToLast()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
 *
 * @param limit - The maximum number of nodes to include in this query.
 */
function limitToLast(limit) {
    if (typeof limit !== 'number' || Math.floor(limit) !== limit || limit <= 0) {
        throw new Error('limitToLast: First argument must be a positive integer.');
    }
    return new QueryLimitToLastConstraint(limit);
}
var QueryOrderByChildConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryOrderByChildConstraint, _super);
    function QueryOrderByChildConstraint(_path) {
        var _this = _super.call(this) || this;
        _this._path = _path;
        return _this;
    }
    QueryOrderByChildConstraint.prototype._apply = function (query) {
        validateNoPreviousOrderByCall(query, 'orderByChild');
        var parsedPath = new Path(this._path);
        if (pathIsEmpty(parsedPath)) {
            throw new Error('orderByChild: cannot pass in empty path. Use orderByValue() instead.');
        }
        var index = new PathIndex(parsedPath);
        var newParams = queryParamsOrderBy(query._queryParams, index);
        validateQueryEndpoints(newParams);
        return new QueryImpl(query._repo, query._path, newParams, 
        /*orderByCalled=*/ true);
    };
    return QueryOrderByChildConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that orders by the specified child key.
 *
 * Queries can only order by one key at a time. Calling `orderByChild()`
 * multiple times on the same query is an error.
 *
 * Firebase queries allow you to order your data by any child key on the fly.
 * However, if you know in advance what your indexes will be, you can define
 * them via the .indexOn rule in your Security Rules for better performance. See
 * the{@link https://firebase.google.com/docs/database/security/indexing-data}
 * rule for more information.
 *
 * You can read more about `orderByChild()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
 *
 * @param path - The path to order by.
 */
function orderByChild(path) {
    if (path === '$key') {
        throw new Error('orderByChild: "$key" is invalid.  Use orderByKey() instead.');
    }
    else if (path === '$priority') {
        throw new Error('orderByChild: "$priority" is invalid.  Use orderByPriority() instead.');
    }
    else if (path === '$value') {
        throw new Error('orderByChild: "$value" is invalid.  Use orderByValue() instead.');
    }
    validatePathString('orderByChild', 'path', path, false);
    return new QueryOrderByChildConstraint(path);
}
var QueryOrderByKeyConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryOrderByKeyConstraint, _super);
    function QueryOrderByKeyConstraint() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    QueryOrderByKeyConstraint.prototype._apply = function (query) {
        validateNoPreviousOrderByCall(query, 'orderByKey');
        var newParams = queryParamsOrderBy(query._queryParams, KEY_INDEX);
        validateQueryEndpoints(newParams);
        return new QueryImpl(query._repo, query._path, newParams, 
        /*orderByCalled=*/ true);
    };
    return QueryOrderByKeyConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that orders by the key.
 *
 * Sorts the results of a query by their (ascending) key values.
 *
 * You can read more about `orderByKey()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
 */
function orderByKey() {
    return new QueryOrderByKeyConstraint();
}
var QueryOrderByPriorityConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryOrderByPriorityConstraint, _super);
    function QueryOrderByPriorityConstraint() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    QueryOrderByPriorityConstraint.prototype._apply = function (query) {
        validateNoPreviousOrderByCall(query, 'orderByPriority');
        var newParams = queryParamsOrderBy(query._queryParams, PRIORITY_INDEX);
        validateQueryEndpoints(newParams);
        return new QueryImpl(query._repo, query._path, newParams, 
        /*orderByCalled=*/ true);
    };
    return QueryOrderByPriorityConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that orders by priority.
 *
 * Applications need not use priority but can order collections by
 * ordinary properties (see
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}
 * for alternatives to priority.
 */
function orderByPriority() {
    return new QueryOrderByPriorityConstraint();
}
var QueryOrderByValueConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryOrderByValueConstraint, _super);
    function QueryOrderByValueConstraint() {
        return _super !== null && _super.apply(this, arguments) || this;
    }
    QueryOrderByValueConstraint.prototype._apply = function (query) {
        validateNoPreviousOrderByCall(query, 'orderByValue');
        var newParams = queryParamsOrderBy(query._queryParams, VALUE_INDEX);
        validateQueryEndpoints(newParams);
        return new QueryImpl(query._repo, query._path, newParams, 
        /*orderByCalled=*/ true);
    };
    return QueryOrderByValueConstraint;
}(QueryConstraint));
/**
 * Creates a new `QueryConstraint` that orders by value.
 *
 * If the children of a query are all scalar values (string, number, or
 * boolean), you can order the results by their (ascending) values.
 *
 * You can read more about `orderByValue()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
 */
function orderByValue() {
    return new QueryOrderByValueConstraint();
}
var QueryEqualToValueConstraint = /** @class */ (function (_super) {
    tslib.__extends(QueryEqualToValueConstraint, _super);
    function QueryEqualToValueConstraint(_value, _key) {
        var _this = _super.call(this) || this;
        _this._value = _value;
        _this._key = _key;
        return _this;
    }
    QueryEqualToValueConstraint.prototype._apply = function (query) {
        validateFirebaseDataArg('equalTo', this._value, query._path, false);
        if (query._queryParams.hasStart()) {
            throw new Error('equalTo: Starting point was already set (by another call to startAt/startAfter or ' +
                'equalTo).');
        }
        if (query._queryParams.hasEnd()) {
            throw new Error('equalTo: Ending point was already set (by another call to endAt/endBefore or ' +
                'equalTo).');
        }
        return new QueryEndAtConstraint(this._value, this._key)._apply(new QueryStartAtConstraint(this._value, this._key)._apply(query));
    };
    return QueryEqualToValueConstraint;
}(QueryConstraint));
/**
 * Creates a `QueryConstraint` that includes children that match the specified
 * value.
 *
 * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
 * allows you to choose arbitrary starting and ending points for your queries.
 *
 * The optional key argument can be used to further limit the range of the
 * query. If it is specified, then children that have exactly the specified
 * value must also have exactly the specified key as their key name. This can be
 * used to filter result sets with many matches for the same value.
 *
 * You can read more about `equalTo()` in
 * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
 *
 * @param value - The value to match for. The argument type depends on which
 * `orderBy*()` function was used in this query. Specify a value that matches
 * the `orderBy*()` type. When used in combination with `orderByKey()`, the
 * value must be a string.
 * @param key - The child key to start at, among the children with the
 * previously specified priority. This argument is only allowed if ordering by
 * child, value, or priority.
 */
function equalTo(value, key) {
    validateKey('equalTo', 'key', key, true);
    return new QueryEqualToValueConstraint(value, key);
}
/**
 * Creates a new immutable instance of `Query` that is extended to also include
 * additional query constraints.
 *
 * @param query - The Query instance to use as a base for the new constraints.
 * @param queryConstraints - The list of `QueryConstraint`s to apply.
 * @throws if any of the provided query constraints cannot be combined with the
 * existing or new constraints.
 */
function query(query) {
    var e_1, _a;
    var queryConstraints = [];
    for (var _i = 1; _i < arguments.length; _i++) {
        queryConstraints[_i - 1] = arguments[_i];
    }
    var queryImpl = util.getModularInstance(query);
    try {
        for (var queryConstraints_1 = tslib.__values(queryConstraints), queryConstraints_1_1 = queryConstraints_1.next(); !queryConstraints_1_1.done; queryConstraints_1_1 = queryConstraints_1.next()) {
            var constraint = queryConstraints_1_1.value;
            queryImpl = constraint._apply(queryImpl);
        }
    }
    catch (e_1_1) { e_1 = { error: e_1_1 }; }
    finally {
        try {
            if (queryConstraints_1_1 && !queryConstraints_1_1.done && (_a = queryConstraints_1.return)) _a.call(queryConstraints_1);
        }
        finally { if (e_1) throw e_1.error; }
    }
    return queryImpl;
}
/**
 * Define reference constructor in various modules
 *
 * We are doing this here to avoid several circular
 * dependency issues
 */
syncPointSetReferenceConstructor(ReferenceImpl);
syncTreeSetReferenceConstructor(ReferenceImpl);

/**
 * This variable is also defined in the firebase Node.js Admin SDK. Before
 * modifying this definition, consult the definition in:
 *
 * https://github.com/firebase/firebase-admin-node
 *
 * and make sure the two are consistent.
 */
var FIREBASE_DATABASE_EMULATOR_HOST_VAR = 'FIREBASE_DATABASE_EMULATOR_HOST';
/**
 * Creates and caches `Repo` instances.
 */
var repos = {};
/**
 * If true, any new `Repo` will be created to use `ReadonlyRestClient` (for testing purposes).
 */
var useRestClient = false;
/**
 * Update an existing `Repo` in place to point to a new host/port.
 */
function repoManagerApplyEmulatorSettings(repo, host, port, tokenProvider) {
    repo.repoInfo_ = new RepoInfo("".concat(host, ":").concat(port), 
    /* secure= */ false, repo.repoInfo_.namespace, repo.repoInfo_.webSocketOnly, repo.repoInfo_.nodeAdmin, repo.repoInfo_.persistenceKey, repo.repoInfo_.includeNamespaceInQueryParams, 
    /*isUsingEmulator=*/ true);
    if (tokenProvider) {
        repo.authTokenProvider_ = tokenProvider;
    }
}
/**
 * This function should only ever be called to CREATE a new database instance.
 * @internal
 */
function repoManagerDatabaseFromApp(app, authProvider, appCheckProvider, url, nodeAdmin) {
    var dbUrl = url || app.options.databaseURL;
    if (dbUrl === undefined) {
        if (!app.options.projectId) {
            fatal("Can't determine Firebase Database URL. Be sure to include " +
                ' a Project ID when calling firebase.initializeApp().');
        }
        log('Using default host for project ', app.options.projectId);
        dbUrl = "".concat(app.options.projectId, "-default-rtdb.firebaseio.com");
    }
    var parsedUrl = parseRepoInfo(dbUrl, nodeAdmin);
    var repoInfo = parsedUrl.repoInfo;
    var isEmulator;
    var dbEmulatorHost = undefined;
    if (typeof process !== 'undefined' && process.env) {
        dbEmulatorHost = process.env[FIREBASE_DATABASE_EMULATOR_HOST_VAR];
    }
    if (dbEmulatorHost) {
        isEmulator = true;
        dbUrl = "http://".concat(dbEmulatorHost, "?ns=").concat(repoInfo.namespace);
        parsedUrl = parseRepoInfo(dbUrl, nodeAdmin);
        repoInfo = parsedUrl.repoInfo;
    }
    else {
        isEmulator = !parsedUrl.repoInfo.secure;
    }
    var authTokenProvider = nodeAdmin && isEmulator
        ? new EmulatorTokenProvider(EmulatorTokenProvider.OWNER)
        : new FirebaseAuthTokenProvider(app.name, app.options, authProvider);
    validateUrl('Invalid Firebase Database URL', parsedUrl);
    if (!pathIsEmpty(parsedUrl.path)) {
        fatal('Database URL must point to the root of a Firebase Database ' +
            '(not including a child path).');
    }
    var repo = repoManagerCreateRepo(repoInfo, app, authTokenProvider, new AppCheckTokenProvider(app.name, appCheckProvider));
    return new Database(repo, app);
}
/**
 * Remove the repo and make sure it is disconnected.
 *
 */
function repoManagerDeleteRepo(repo, appName) {
    var appRepos = repos[appName];
    // This should never happen...
    if (!appRepos || appRepos[repo.key] !== repo) {
        fatal("Database ".concat(appName, "(").concat(repo.repoInfo_, ") has already been deleted."));
    }
    repoInterrupt(repo);
    delete appRepos[repo.key];
}
/**
 * Ensures a repo doesn't already exist and then creates one using the
 * provided app.
 *
 * @param repoInfo - The metadata about the Repo
 * @returns The Repo object for the specified server / repoName.
 */
function repoManagerCreateRepo(repoInfo, app, authTokenProvider, appCheckProvider) {
    var appRepos = repos[app.name];
    if (!appRepos) {
        appRepos = {};
        repos[app.name] = appRepos;
    }
    var repo = appRepos[repoInfo.toURLString()];
    if (repo) {
        fatal('Database initialized multiple times. Please make sure the format of the database URL matches with each database() call.');
    }
    repo = new Repo(repoInfo, useRestClient, authTokenProvider, appCheckProvider);
    appRepos[repoInfo.toURLString()] = repo;
    return repo;
}
/**
 * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.
 */
function repoManagerForceRestClient(forceRestClient) {
    useRestClient = forceRestClient;
}
/**
 * Class representing a Firebase Realtime Database.
 */
var Database = /** @class */ (function () {
    /** @hideconstructor */
    function Database(_repoInternal, 
    /** The {@link @firebase/app#FirebaseApp} associated with this Realtime Database instance. */
    app) {
        this._repoInternal = _repoInternal;
        this.app = app;
        /** Represents a `Database` instance. */
        this['type'] = 'database';
        /** Track if the instance has been used (root or repo accessed) */
        this._instanceStarted = false;
    }
    Object.defineProperty(Database.prototype, "_repo", {
        get: function () {
            if (!this._instanceStarted) {
                repoStart(this._repoInternal, this.app.options.appId, this.app.options['databaseAuthVariableOverride']);
                this._instanceStarted = true;
            }
            return this._repoInternal;
        },
        enumerable: false,
        configurable: true
    });
    Object.defineProperty(Database.prototype, "_root", {
        get: function () {
            if (!this._rootInternal) {
                this._rootInternal = new ReferenceImpl(this._repo, newEmptyPath());
            }
            return this._rootInternal;
        },
        enumerable: false,
        configurable: true
    });
    Database.prototype._delete = function () {
        if (this._rootInternal !== null) {
            repoManagerDeleteRepo(this._repo, this.app.name);
            this._repoInternal = null;
            this._rootInternal = null;
        }
        return Promise.resolve();
    };
    Database.prototype._checkNotDeleted = function (apiName) {
        if (this._rootInternal === null) {
            fatal('Cannot call ' + apiName + ' on a deleted database.');
        }
    };
    return Database;
}());
function checkTransportInit() {
    if (TransportManager.IS_TRANSPORT_INITIALIZED) {
        warn('Transport has already been initialized. Please call this function before calling ref or setting up a listener');
    }
}
/**
 * Force the use of websockets instead of longPolling.
 */
function forceWebSockets() {
    checkTransportInit();
    BrowserPollConnection.forceDisallow();
}
/**
 * Force the use of longPolling instead of websockets. This will be ignored if websocket protocol is used in databaseURL.
 */
function forceLongPolling() {
    checkTransportInit();
    WebSocketConnection.forceDisallow();
    BrowserPollConnection.forceAllow();
}
/**
 * Modify the provided instance to communicate with the Realtime Database
 * emulator.
 *
 * <p>Note: This method must be called before performing any other operation.
 *
 * @param db - The instance to modify.
 * @param host - The emulator host (ex: localhost)
 * @param port - The emulator port (ex: 8080)
 * @param options.mockUserToken - the mock auth token to use for unit testing Security Rules
 */
function connectDatabaseEmulator(db, host, port, options) {
    if (options === void 0) { options = {}; }
    db = util.getModularInstance(db);
    db._checkNotDeleted('useEmulator');
    if (db._instanceStarted) {
        fatal('Cannot call useEmulator() after instance has already been initialized.');
    }
    var repo = db._repoInternal;
    var tokenProvider = undefined;
    if (repo.repoInfo_.nodeAdmin) {
        if (options.mockUserToken) {
            fatal('mockUserToken is not supported by the Admin SDK. For client access with mock users, please use the "firebase" package instead of "firebase-admin".');
        }
        tokenProvider = new EmulatorTokenProvider(EmulatorTokenProvider.OWNER);
    }
    else if (options.mockUserToken) {
        var token = typeof options.mockUserToken === 'string'
            ? options.mockUserToken
            : util.createMockUserToken(options.mockUserToken, db.app.options.projectId);
        tokenProvider = new EmulatorTokenProvider(token);
    }
    // Modify the repo to apply emulator settings
    repoManagerApplyEmulatorSettings(repo, host, port, tokenProvider);
}
/**
 * Disconnects from the server (all Database operations will be completed
 * offline).
 *
 * The client automatically maintains a persistent connection to the Database
 * server, which will remain active indefinitely and reconnect when
 * disconnected. However, the `goOffline()` and `goOnline()` methods may be used
 * to control the client connection in cases where a persistent connection is
 * undesirable.
 *
 * While offline, the client will no longer receive data updates from the
 * Database. However, all Database operations performed locally will continue to
 * immediately fire events, allowing your application to continue behaving
 * normally. Additionally, each operation performed locally will automatically
 * be queued and retried upon reconnection to the Database server.
 *
 * To reconnect to the Database and begin receiving remote events, see
 * `goOnline()`.
 *
 * @param db - The instance to disconnect.
 */
function goOffline(db) {
    db = util.getModularInstance(db);
    db._checkNotDeleted('goOffline');
    repoInterrupt(db._repo);
}
/**
 * Reconnects to the server and synchronizes the offline Database state
 * with the server state.
 *
 * This method should be used after disabling the active connection with
 * `goOffline()`. Once reconnected, the client will transmit the proper data
 * and fire the appropriate events so that your client "catches up"
 * automatically.
 *
 * @param db - The instance to reconnect.
 */
function goOnline(db) {
    db = util.getModularInstance(db);
    db._checkNotDeleted('goOnline');
    repoResume(db._repo);
}
function enableLogging(logger, persistent) {
    enableLogging$1(logger, persistent);
}

exports.DataSnapshot = DataSnapshot;
exports.Database = Database;
exports.OnDisconnect = OnDisconnect;
exports.QueryConstraint = QueryConstraint;
exports.TransactionResult = TransactionResult;
exports._QueryImpl = QueryImpl;
exports._QueryParams = QueryParams;
exports._ReferenceImpl = ReferenceImpl;
exports._TEST_ACCESS_forceRestClient = forceRestClient;
exports._TEST_ACCESS_hijackHash = hijackHash;
exports._repoManagerDatabaseFromApp = repoManagerDatabaseFromApp;
exports._setSDKVersion = setSDKVersion;
exports._validatePathString = validatePathString;
exports._validateWritablePath = validateWritablePath;
exports.child = child;
exports.connectDatabaseEmulator = connectDatabaseEmulator;
exports.enableLogging = enableLogging;
exports.endAt = endAt;
exports.endBefore = endBefore;
exports.equalTo = equalTo;
exports.forceLongPolling = forceLongPolling;
exports.forceWebSockets = forceWebSockets;
exports.get = get;
exports.goOffline = goOffline;
exports.goOnline = goOnline;
exports.increment = increment;
exports.limitToFirst = limitToFirst;
exports.limitToLast = limitToLast;
exports.off = off;
exports.onChildAdded = onChildAdded;
exports.onChildChanged = onChildChanged;
exports.onChildMoved = onChildMoved;
exports.onChildRemoved = onChildRemoved;
exports.onDisconnect = onDisconnect;
exports.onValue = onValue;
exports.orderByChild = orderByChild;
exports.orderByKey = orderByKey;
exports.orderByPriority = orderByPriority;
exports.orderByValue = orderByValue;
exports.push = push;
exports.query = query;
exports.ref = ref;
exports.refFromURL = refFromURL;
exports.remove = remove;
exports.runTransaction = runTransaction;
exports.serverTimestamp = serverTimestamp;
exports.set = set;
exports.setPriority = setPriority;
exports.setWithPriority = setWithPriority;
exports.startAfter = startAfter;
exports.startAt = startAt;
exports.update = update;
//# sourceMappingURL=index.standalone.js.map

cmd: