Modules

node_modules/@firebase/database/dist/index.d.ts

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+import { FirebaseNamespace } from '@firebase/app-types';
+import { Database } from './src/api/Database';
+import { Query } from './src/api/Query';
+import { Reference } from './src/api/Reference';
+import { enableLogging } from './src/core/util/util';
+import * as types from '@firebase/database-types';
+declare const ServerValue: {
+    TIMESTAMP: {
+        '.sv': string;
+    };
+};
+export declare function registerDatabase(instance: FirebaseNamespace): void;
+export { Database, Query, Reference, enableLogging, ServerValue };
+export { DataSnapshot } from './src/api/DataSnapshot';
+export { OnDisconnect } from './src/api/onDisconnect';
+declare module '@firebase/app-types' {
+    interface FirebaseNamespace {
+        database?: {
+            (app?: FirebaseApp): types.FirebaseDatabase;
+            enableLogging: typeof types.enableLogging;
+            ServerValue: types.ServerValue;
+            Database: typeof types.FirebaseDatabase;
+        };
+    }
+    interface FirebaseApp {
+        database?(databaseURL?: string): types.FirebaseDatabase;
+    }
+}

node_modules/@firebase/database/dist/index.node.d.ts

@@ -0,0 +1,72 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { FirebaseNamespace, FirebaseApp } from '@firebase/app-types';
+import { Database } from './src/api/Database';
+import { DataSnapshot } from './src/api/DataSnapshot';
+import { Query } from './src/api/Query';
+import { Reference } from './src/api/Reference';
+import { enableLogging } from './src/core/util/util';
+import * as INTERNAL from './src/api/internal';
+import * as TEST_ACCESS from './src/api/test_access';
+import * as types from '@firebase/database-types';
+declare const ServerValue: {
+    TIMESTAMP: {
+        '.sv': string;
+    };
+};
+/**
+ * A one off register function which returns a database based on the app and
+ * passed database URL.
+ *
+ * @param app A valid FirebaseApp-like object
+ * @param url A valid Firebase databaseURL
+ * @param version custom version e.g. firebase-admin version
+ */
+export declare function initStandalone(app: FirebaseApp, url: string, version: string): {
+    instance: Database;
+    namespace: {
+        Reference: typeof Reference;
+        Query: typeof Query;
+        Database: typeof Database;
+        DataSnapshot: typeof DataSnapshot;
+        enableLogging: (logger_?: boolean | ((a: string) => void), persistent?: boolean) => void;
+        INTERNAL: typeof INTERNAL;
+        ServerValue: {
+            TIMESTAMP: {
+                '.sv': string;
+            };
+        };
+        TEST_ACCESS: typeof TEST_ACCESS;
+    };
+};
+export declare function registerDatabase(instance: FirebaseNamespace): void;
+export { Database, Query, Reference, enableLogging, ServerValue };
+export { DataSnapshot } from './src/api/DataSnapshot';
+export { OnDisconnect } from './src/api/onDisconnect';
+declare module '@firebase/app-types' {
+    interface FirebaseNamespace {
+        database?: {
+            (app?: FirebaseApp): types.FirebaseDatabase;
+            enableLogging: typeof types.enableLogging;
+            ServerValue: types.ServerValue;
+            Database: typeof types.FirebaseDatabase;
+        };
+    }
+    interface FirebaseApp {
+        database?(): types.FirebaseDatabase;
+    }
+}

node_modules/@firebase/database/dist/src/api/DataSnapshot.d.ts

@@ -0,0 +1,99 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../core/snap/Node';
+import { Reference } from './Reference';
+import { Index } from '../core/snap/indexes/Index';
+/**
+ * Class representing a firebase data snapshot.  It wraps a SnapshotNode and
+ * surfaces the public methods (val, forEach, etc.) we want to expose.
+ */
+export declare class DataSnapshot {
+    private readonly node_;
+    private readonly ref_;
+    private readonly index_;
+    /**
+     * @param {!Node} node_ A SnapshotNode to wrap.
+     * @param {!Reference} ref_ The ref of the location this snapshot came from.
+     * @param {!Index} index_ The iteration order for this snapshot
+     */
+    constructor(node_: Node, ref_: Reference, index_: Index);
+    /**
+     * Retrieves the snapshot contents as JSON.  Returns null if the snapshot is
+     * empty.
+     *
+     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.
+     */
+    val(): unknown;
+    /**
+     * Returns the snapshot contents as JSON, including priorities of node.  Suitable for exporting
+     * the entire node contents.
+     * @return {*} JSON representation of the DataSnapshot contents, or null if empty.
+     */
+    exportVal(): unknown;
+    toJSON(): unknown;
+    /**
+     * Returns whether the snapshot contains a non-null value.
+     *
+     * @return {boolean} Whether the snapshot contains a non-null value, or is empty.
+     */
+    exists(): boolean;
+    /**
+     * Returns a DataSnapshot of the specified child node's contents.
+     *
+     * @param {!string} childPathString Path to a child.
+     * @return {!DataSnapshot} DataSnapshot for child node.
+     */
+    child(childPathString: string): DataSnapshot;
+    /**
+     * Returns whether the snapshot contains a child at the specified path.
+     *
+     * @param {!string} childPathString Path to a child.
+     * @return {boolean} Whether the child exists.
+     */
+    hasChild(childPathString: string): boolean;
+    /**
+     * Returns the priority of the object, or null if no priority was set.
+     *
+     * @return {string|number|null} The priority.
+     */
+    getPriority(): string | number | null;
+    /**
+     * Iterates through child nodes and calls the specified action for each one.
+     *
+     * @param {function(!DataSnapshot)} action Callback function to be called
+     * for each child.
+     * @return {boolean} True if forEach was canceled by action returning true for
+     * one of the child nodes.
+     */
+    forEach(action: (d: DataSnapshot) => boolean | void): boolean;
+    /**
+     * Returns whether this DataSnapshot has children.
+     * @return {boolean} True if the DataSnapshot contains 1 or more child nodes.
+     */
+    hasChildren(): boolean;
+    get key(): string;
+    /**
+     * Returns the number of children for this DataSnapshot.
+     * @return {number} The number of children that this DataSnapshot contains.
+     */
+    numChildren(): number;
+    /**
+     * @return {Reference} The Firebase reference for the location this snapshot's data came from.
+     */
+    getRef(): Reference;
+    get ref(): Reference;
+}

node_modules/@firebase/database/dist/src/api/Database.d.ts

@@ -0,0 +1,73 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Reference } from './Reference';
+import { Repo } from '../core/Repo';
+import { FirebaseApp } from '@firebase/app-types';
+import { FirebaseService } from '@firebase/app-types/private';
+/**
+ * Class representing a firebase database.
+ * @implements {FirebaseService}
+ */
+export declare class Database implements FirebaseService {
+    private repo_;
+    INTERNAL: DatabaseInternals;
+    private root_;
+    static readonly ServerValue: {
+        TIMESTAMP: {
+            '.sv': string;
+        };
+    };
+    /**
+     * The constructor should not be called by users of our public API.
+     * @param {!Repo} repo_
+     */
+    constructor(repo_: Repo);
+    get app(): FirebaseApp;
+    /**
+     * Returns a reference to the root or to the path specified in the provided
+     * argument.
+     *
+     * @param {string|Reference=} path The relative string path or an existing
+     * Reference to a database location.
+     * @throws If a Reference is provided, throws if it does not belong to the
+     * same project.
+     * @return {!Reference} Firebase reference.
+     */
+    ref(path?: string): Reference;
+    ref(path?: Reference): Reference;
+    /**
+     * Returns a reference to the root or the path specified in url.
+     * We throw a exception if the url is not in the same domain as the
+     * current repo.
+     * @param {string} url
+     * @return {!Reference} Firebase reference.
+     */
+    refFromURL(url: string): Reference;
+    /**
+     * @param {string} apiName
+     */
+    private checkDeleted_;
+    goOffline(): void;
+    goOnline(): void;
+}
+export declare class DatabaseInternals {
+    database: Database;
+    /** @param {!Database} database */
+    constructor(database: Database);
+    /** @return {Promise<void>} */
+    delete(): Promise<void>;
+}

node_modules/@firebase/database/dist/src/api/Query.d.ts

@@ -0,0 +1,187 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../core/util/Path';
+import { Repo } from '../core/Repo';
+import { QueryParams } from '../core/view/QueryParams';
+import { Reference } from './Reference';
+import { DataSnapshot } from './DataSnapshot';
+export interface SnapshotCallback {
+    (a: DataSnapshot, b?: string | null): unknown;
+}
+/**
+ * A Query represents a filter to be applied to a firebase location.  This object purely represents the
+ * query expression (and exposes our public API to build the query).  The actual query logic is in ViewBase.js.
+ *
+ * Since every Firebase reference is a query, Firebase inherits from this object.
+ */
+export declare class Query {
+    repo: Repo;
+    path: Path;
+    private queryParams_;
+    private orderByCalled_;
+    static set __referenceConstructor(val: new (repo: Repo, path: Path) => Query);
+    static get __referenceConstructor(): new (repo: Repo, path: Path) => Query;
+    constructor(repo: Repo, path: Path, queryParams_: QueryParams, orderByCalled_: boolean);
+    /**
+     * Validates start/end values for queries.
+     * @param {!QueryParams} params
+     * @private
+     */
+    private static validateQueryEndpoints_;
+    /**
+     * Validates that limit* has been called with the correct combination of parameters
+     * @param {!QueryParams} params
+     * @private
+     */
+    private static validateLimit_;
+    /**
+     * Validates that no other order by call has been made
+     * @param {!string} fnName
+     * @private
+     */
+    private validateNoPreviousOrderByCall_;
+    /**
+     * @return {!QueryParams}
+     */
+    getQueryParams(): QueryParams;
+    /**
+     * @return {!Reference}
+     */
+    getRef(): Reference;
+    /**
+     * @param {!string} eventType
+     * @param {!function(DataSnapshot, string=)} callback
+     * @param {(function(Error)|Object)=} cancelCallbackOrContext
+     * @param {Object=} context
+     * @return {!function(DataSnapshot, string=)}
+     */
+    on(eventType: string, callback: SnapshotCallback, cancelCallbackOrContext?: ((a: Error) => unknown) | object | null, context?: object | null): SnapshotCallback;
+    /**
+     * @param {!function(!DataSnapshot)} callback
+     * @param {?function(Error)} cancelCallback
+     * @param {?Object} context
+     * @protected
+     */
+    protected onValueEvent(callback: (a: DataSnapshot) => void, cancelCallback: ((a: Error) => void) | null, context: object | null): void;
+    /**
+     * @param {!Object.<string, !function(!DataSnapshot, ?string)>} callbacks
+     * @param {?function(Error)} cancelCallback
+     * @param {?Object} context
+     * @protected
+     */
+    onChildEvent(callbacks: {
+        [k: string]: SnapshotCallback;
+    }, cancelCallback: ((a: Error) => unknown) | null, context: object | null): void;
+    /**
+     * @param {string=} eventType
+     * @param {(function(!DataSnapshot, ?string=))=} callback
+     * @param {Object=} context
+     */
+    off(eventType?: string, callback?: SnapshotCallback, context?: object | null): void;
+    /**
+     * Attaches a listener, waits for the first event, and then removes the listener
+     * @param {!string} eventType
+     * @param {!function(!DataSnapshot, string=)} userCallback
+     * @param failureCallbackOrContext
+     * @param context
+     * @return {!firebase.Promise}
+     */
+    once(eventType: string, userCallback?: SnapshotCallback, failureCallbackOrContext?: ((a: Error) => void) | object | null, context?: object | null): Promise<DataSnapshot>;
+    /**
+     * Set a limit and anchor it to the start of the window.
+     * @param {!number} limit
+     * @return {!Query}
+     */
+    limitToFirst(limit: number): Query;
+    /**
+     * Set a limit and anchor it to the end of the window.
+     * @param {!number} limit
+     * @return {!Query}
+     */
+    limitToLast(limit: number): Query;
+    /**
+     * Given a child path, return a new query ordered by the specified grandchild path.
+     * @param {!string} path
+     * @return {!Query}
+     */
+    orderByChild(path: string): Query;
+    /**
+     * Return a new query ordered by the KeyIndex
+     * @return {!Query}
+     */
+    orderByKey(): Query;
+    /**
+     * Return a new query ordered by the PriorityIndex
+     * @return {!Query}
+     */
+    orderByPriority(): Query;
+    /**
+     * Return a new query ordered by the ValueIndex
+     * @return {!Query}
+     */
+    orderByValue(): Query;
+    /**
+     * @param {number|string|boolean|null} value
+     * @param {?string=} name
+     * @return {!Query}
+     */
+    startAt(value?: number | string | boolean | null, name?: string | null): Query;
+    /**
+     * @param {number|string|boolean|null} value
+     * @param {?string=} name
+     * @return {!Query}
+     */
+    endAt(value?: number | string | boolean | null, name?: string | null): Query;
+    /**
+     * Load the selection of children with exactly the specified value, and, optionally,
+     * the specified name.
+     * @param {number|string|boolean|null} value
+     * @param {string=} name
+     * @return {!Query}
+     */
+    equalTo(value: number | string | boolean | null, name?: string): Query;
+    /**
+     * @return {!string} URL for this location.
+     */
+    toString(): string;
+    toJSON(): string;
+    /**
+     * An object representation of the query parameters used by this Query.
+     * @return {!Object}
+     */
+    queryObject(): object;
+    /**
+     * @return {!string}
+     */
+    queryIdentifier(): string;
+    /**
+     * Return true if this query and the provided query are equivalent; otherwise, return false.
+     * @param {Query} other
+     * @return {boolean}
+     */
+    isEqual(other: Query): boolean;
+    /**
+     * Helper used by .on and .once to extract the context and or cancel arguments.
+     * @param {!string} fnName The function name (on or once)
+     * @param {(function(Error)|Object)=} cancelOrContext
+     * @param {Object=} context
+     * @return {{cancel: ?function(Error), context: ?Object}}
+     * @private
+     */
+    private static getCancelAndContextArgs_;
+    get ref(): Reference;
+}

node_modules/@firebase/database/dist/src/api/Reference.d.ts

@@ -0,0 +1,106 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { OnDisconnect } from './onDisconnect';
+import { TransactionResult } from './TransactionResult';
+import { Query } from './Query';
+import { Repo } from '../core/Repo';
+import { Path } from '../core/util/Path';
+import { Database } from './Database';
+import { DataSnapshot } from './DataSnapshot';
+export interface ReferenceConstructor {
+    new (repo: Repo, path: Path): Reference;
+}
+export declare class Reference extends Query {
+    then: Promise<Reference>['then'];
+    catch: Promise<Reference>['catch'];
+    /**
+     * Call options:
+     *   new Reference(Repo, Path) or
+     *   new Reference(url: string, string|RepoManager)
+     *
+     * Externally - this is the firebase.database.Reference type.
+     *
+     * @param {!Repo} repo
+     * @param {(!Path)} path
+     * @extends {Query}
+     */
+    constructor(repo: Repo, path: Path);
+    /** @return {?string} */
+    getKey(): string | null;
+    /**
+     * @param {!(string|Path)} pathString
+     * @return {!Reference}
+     */
+    child(pathString: string | Path): Reference;
+    /** @return {?Reference} */
+    getParent(): Reference | null;
+    /** @return {!Reference} */
+    getRoot(): Reference;
+    /** @return {!Database} */
+    databaseProp(): Database;
+    /**
+     * @param {*} newVal
+     * @param {function(?Error)=} onComplete
+     * @return {!Promise}
+     */
+    set(newVal: unknown, onComplete?: (a: Error | null) => void): Promise<unknown>;
+    /**
+     * @param {!Object} objectToMerge
+     * @param {function(?Error)=} onComplete
+     * @return {!Promise}
+     */
+    update(objectToMerge: object, onComplete?: (a: Error | null) => void): Promise<unknown>;
+    /**
+     * @param {*} newVal
+     * @param {string|number|null} newPriority
+     * @param {function(?Error)=} onComplete
+     * @return {!Promise}
+     */
+    setWithPriority(newVal: unknown, newPriority: string | number | null, onComplete?: (a: Error | null) => void): Promise<unknown>;
+    /**
+     * @param {function(?Error)=} onComplete
+     * @return {!Promise}
+     */
+    remove(onComplete?: (a: Error | null) => void): Promise<unknown>;
+    /**
+     * @param {function(*):*} transactionUpdate
+     * @param {(function(?Error, boolean, ?DataSnapshot))=} onComplete
+     * @param {boolean=} applyLocally
+     * @return {!Promise}
+     */
+    transaction(transactionUpdate: (a: unknown) => unknown, onComplete?: (a: Error | null, b: boolean, c: DataSnapshot | null) => void, applyLocally?: boolean): Promise<TransactionResult>;
+    /**
+     * @param {string|number|null} priority
+     * @param {function(?Error)=} onComplete
+     * @return {!Promise}
+     */
+    setPriority(priority: string | number | null, onComplete?: (a: Error | null) => void): Promise<unknown>;
+    /**
+     * @param {*=} value
+     * @param {function(?Error)=} onComplete
+     * @return {!Reference}
+     */
+    push(value?: unknown, onComplete?: (a: Error | null) => void): Reference;
+    /**
+     * @return {!OnDisconnect}
+     */
+    onDisconnect(): OnDisconnect;
+    get database(): Database;
+    get key(): string | null;
+    get parent(): Reference | null;
+    get root(): Reference;
+}

node_modules/@firebase/database/dist/src/api/TransactionResult.d.ts

@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { DataSnapshot } from './DataSnapshot';
+export declare class TransactionResult {
+    committed: boolean;
+    snapshot: DataSnapshot;
+    /**
+     * A type for the resolve value of Firebase.transaction.
+     * @constructor
+     * @dict
+     * @param {boolean} committed
+     * @param {DataSnapshot} snapshot
+     */
+    constructor(committed: boolean, snapshot: DataSnapshot);
+    toJSON(): object;
+}

node_modules/@firebase/database/dist/src/api/internal.d.ts

@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Reference } from './Reference';
+/**
+ * INTERNAL methods for internal-use only (tests, etc.).
+ *
+ * Customers shouldn't use these or else should be aware that they could break at any time.
+ *
+ * @const
+ */
+export declare const forceLongPolling: () => void;
+export declare const forceWebSockets: () => void;
+export declare const isWebSocketsAvailable: () => boolean;
+export declare const setSecurityDebugCallback: (ref: Reference, callback: (a: object) => void) => void;
+export declare const stats: (ref: Reference, showDelta?: boolean) => void;
+export declare const statsIncrementCounter: (ref: Reference, metric: string) => void;
+export declare const dataUpdateCount: (ref: Reference) => number;
+export declare const interceptServerData: (ref: Reference, callback: (a: string, b: unknown) => void) => void;

node_modules/@firebase/database/dist/src/api/onDisconnect.d.ts

@@ -0,0 +1,60 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Repo } from '../core/Repo';
+import { Path } from '../core/util/Path';
+import { Indexable } from '../core/util/misc';
+/**
+ * @constructor
+ */
+export declare class OnDisconnect {
+    private repo_;
+    private path_;
+    /**
+     * @param {!Repo} repo_
+     * @param {!Path} path_
+     */
+    constructor(repo_: Repo, path_: Path);
+    /**
+     * @param {function(?Error)=} onComplete
+     * @return {!firebase.Promise}
+     */
+    cancel(onComplete?: (a: Error | null) => void): Promise<void>;
+    /**
+     * @param {function(?Error)=} onComplete
+     * @return {!firebase.Promise}
+     */
+    remove(onComplete?: (a: Error | null) => void): Promise<void>;
+    /**
+     * @param {*} value
+     * @param {function(?Error)=} onComplete
+     * @return {!firebase.Promise}
+     */
+    set(value: unknown, onComplete?: (a: Error | null) => void): Promise<void>;
+    /**
+     * @param {*} value
+     * @param {number|string|null} priority
+     * @param {function(?Error)=} onComplete
+     * @return {!firebase.Promise}
+     */
+    setWithPriority(value: unknown, priority: number | string | null, onComplete?: (a: Error | null) => void): Promise<void>;
+    /**
+     * @param {!Object} objectToMerge
+     * @param {function(?Error)=} onComplete
+     * @return {!firebase.Promise}
+     */
+    update(objectToMerge: Indexable, onComplete?: (a: Error | null) => void): Promise<void>;
+}

node_modules/@firebase/database/dist/src/api/test_access.d.ts

@@ -0,0 +1,42 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+import { PersistentConnection } from '../core/PersistentConnection';
+import { Connection } from '../realtime/Connection';
+import { Query } from './Query';
+export declare const DataConnection: typeof PersistentConnection;
+export declare const RealTimeConnection: typeof Connection;
+/**
+ * @param {function(): string} newHash
+ * @return {function()}
+ */
+export declare const hijackHash: (newHash: () => string) => () => void;
+/**
+ * @type {function(new:RepoInfo, !string, boolean, !string, boolean): undefined}
+ */
+export declare const ConnectionTarget: typeof RepoInfo;
+/**
+ * @param {!Query} query
+ * @return {!string}
+ */
+export declare const queryIdentifier: (query: Query) => string;
+/**
+ * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.
+ *
+ * @param {boolean} forceRestClient
+ */
+export declare const forceRestClient: (forceRestClient: boolean) => void;

node_modules/@firebase/database/dist/src/core/AuthTokenProvider.d.ts

@@ -0,0 +1,37 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { FirebaseAuthTokenData } from '@firebase/app-types/private';
+import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
+import { Provider } from '@firebase/component';
+import { FirebaseApp } from '@firebase/app-types';
+/**
+ * Abstraction around FirebaseApp's token fetching capabilities.
+ */
+export declare class AuthTokenProvider {
+    private app_;
+    private authProvider_;
+    private auth_;
+    constructor(app_: FirebaseApp, authProvider_: Provider<FirebaseAuthInternalName>);
+    /**
+     * @param {boolean} forceRefresh
+     * @return {!Promise<FirebaseAuthTokenData>}
+     */
+    getToken(forceRefresh: boolean): Promise<FirebaseAuthTokenData>;
+    addTokenChangeListener(listener: (token: string | null) => void): void;
+    removeTokenChangeListener(listener: (token: string | null) => void): void;
+    notifyForInvalidToken(): void;
+}

node_modules/@firebase/database/dist/src/core/CompoundWrite.d.ts

@@ -0,0 +1,77 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { ImmutableTree } from './util/ImmutableTree';
+import { Path } from './util/Path';
+import { Node, NamedNode } from './snap/Node';
+/**
+ * This class holds a collection of writes that can be applied to nodes in unison. It abstracts away the logic with
+ * dealing with priority writes and multiple nested writes. At any given path there is only allowed to be one write
+ * modifying that path. Any write to an existing path or shadowing an existing path will modify that existing write
+ * to reflect the write added.
+ */
+export declare class CompoundWrite {
+    private writeTree_;
+    constructor(writeTree_: ImmutableTree<Node>);
+    static Empty: CompoundWrite;
+    addWrite(path: Path, node: Node): CompoundWrite;
+    addWrites(path: Path, updates: {
+        [name: string]: Node;
+    }): CompoundWrite;
+    /**
+     * Will remove a write at the given path and deeper paths. This will <em>not</em> modify a write at a higher
+     * location, which must be removed by calling this method with that path.
+     *
+     * @param path The path at which a write and all deeper writes should be removed
+     * @return {!CompoundWrite} The new CompoundWrite with the removed path
+     */
+    removeWrite(path: Path): CompoundWrite;
+    /**
+     * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be
+     * considered "complete".
+     *
+     * @param path The path to check for
+     * @return Whether there is a complete write at that path
+     */
+    hasCompleteWrite(path: Path): boolean;
+    /**
+     * Returns a node for a path if and only if the node is a "complete" overwrite at that path. This will not aggregate
+     * writes from deeper paths, but will return child nodes from a more shallow path.
+     *
+     * @param path The path to get a complete write
+     * @return The node if complete at that path, or null otherwise.
+     */
+    getCompleteNode(path: Path): Node | null;
+    /**
+     * Returns all children that are guaranteed to be a complete overwrite.
+     *
+     * @return A list of all complete children.
+     */
+    getCompleteChildren(): NamedNode[];
+    childCompoundWrite(path: Path): CompoundWrite;
+    /**
+     * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.
+     * @return Whether this CompoundWrite is empty
+     */
+    isEmpty(): boolean;
+    /**
+     * Applies this CompoundWrite to a node. The node is returned with all writes from this CompoundWrite applied to the
+     * node
+     * @param node The node to apply this CompoundWrite to
+     * @return The node with all writes applied
+     */
+    apply(node: Node): Node;
+}

node_modules/@firebase/database/dist/src/core/PersistentConnection.d.ts

@@ -0,0 +1,142 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { ServerActions } from './ServerActions';
+import { AuthTokenProvider } from './AuthTokenProvider';
+import { RepoInfo } from './RepoInfo';
+import { Query } from '../api/Query';
+/**
+ * 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.
+ */
+export declare class PersistentConnection extends ServerActions {
+    private repoInfo_;
+    private onDataUpdate_;
+    private onConnectStatus_;
+    private onServerInfoUpdate_;
+    private authTokenProvider_;
+    private authOverride_?;
+    id: number;
+    private log_;
+    private interruptReasons_;
+    /** Map<path, Map<queryId, ListenSpec>> */
+    private readonly listens;
+    private outstandingPuts_;
+    private outstandingPutCount_;
+    private onDisconnectRequestQueue_;
+    private connected_;
+    private reconnectDelay_;
+    private maxReconnectDelay_;
+    private securityDebugCallback_;
+    lastSessionId: string | null;
+    private establishConnectionTimer_;
+    private visible_;
+    private requestCBHash_;
+    private requestNumber_;
+    private realtime_;
+    private authToken_;
+    private forceTokenRefresh_;
+    private invalidAuthTokenCount_;
+    private firstConnection_;
+    private lastConnectionAttemptTime_;
+    private lastConnectionEstablishedTime_;
+    private static nextPersistentConnectionId_;
+    /**
+     * Counter for number of connections created. Mainly used for tagging in the logs
+     */
+    private static nextConnectionId_;
+    /**
+     * @implements {ServerActions}
+     * @param repoInfo_ Data about the namespace we are connecting to
+     * @param onDataUpdate_ A callback for new data from the server
+     */
+    constructor(repoInfo_: RepoInfo, onDataUpdate_: (a: string, b: unknown, c: boolean, d: number | null) => void, onConnectStatus_: (a: boolean) => void, onServerInfoUpdate_: (a: unknown) => void, authTokenProvider_: AuthTokenProvider, authOverride_?: object | null);
+    protected sendRequest(action: string, body: unknown, onResponse?: (a: unknown) => void): void;
+    /**
+     * @inheritDoc
+     */
+    listen(query: Query, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    private sendListen_;
+    private static warnOnListenWarnings_;
+    /**
+     * @inheritDoc
+     */
+    refreshAuthToken(token: string): void;
+    private reduceReconnectDelayIfAdminCredential_;
+    /**
+     * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like
+     * a auth revoked (the connection is closed).
+     */
+    tryAuth(): void;
+    /**
+     * @inheritDoc
+     */
+    unlisten(query: Query, tag: number | null): void;
+    private sendUnlisten_;
+    /**
+     * @inheritDoc
+     */
+    onDisconnectPut(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    /**
+     * @inheritDoc
+     */
+    onDisconnectMerge(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    /**
+     * @inheritDoc
+     */
+    onDisconnectCancel(pathString: string, onComplete?: (a: string, b: string) => void): void;
+    private sendOnDisconnect_;
+    /**
+     * @inheritDoc
+     */
+    put(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void, hash?: string): void;
+    /**
+     * @inheritDoc
+     */
+    merge(pathString: string, data: unknown, onComplete: (a: string, b: string | null) => void, hash?: string): void;
+    putInternal(action: string, pathString: string, data: unknown, onComplete: (a: string, b: string | null) => void, hash?: string): void;
+    private sendPut_;
+    /**
+     * @inheritDoc
+     */
+    reportStats(stats: {
+        [k: string]: unknown;
+    }): void;
+    private onDataMessage_;
+    private onDataPush_;
+    private onReady_;
+    private scheduleConnect_;
+    private onVisible_;
+    private onOnline_;
+    private onRealtimeDisconnect_;
+    private establishConnection_;
+    interrupt(reason: string): void;
+    resume(reason: string): void;
+    private handleTimestamp_;
+    private cancelSentTransactions_;
+    private onListenRevoked_;
+    private removeListen_;
+    private onAuthRevoked_;
+    private onSecurityDebugPacket_;
+    private restoreState_;
+    /**
+     * Sends client stats for first connection
+     */
+    private sendConnectStats_;
+    private shouldReconnect_;
+}

node_modules/@firebase/database/dist/src/core/ReadonlyRestClient.d.ts

@@ -0,0 +1,72 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { ServerActions } from './ServerActions';
+import { RepoInfo } from './RepoInfo';
+import { AuthTokenProvider } from './AuthTokenProvider';
+import { Query } from '../api/Query';
+/**
+ * An implementation of ServerActions that communicates with the server via REST requests.
+ * This is mostly useful for compatibility with crawlers, where we don't want to spin up a full
+ * persistent connection (using WebSockets or long-polling)
+ */
+export declare class ReadonlyRestClient extends ServerActions {
+    private repoInfo_;
+    private onDataUpdate_;
+    private authTokenProvider_;
+    reportStats(stats: {
+        [k: string]: unknown;
+    }): void;
+    /** @private {function(...[*])} */
+    private log_;
+    /**
+     * We don't actually need to track listens, except to prevent us calling an onComplete for a listen
+     * that's been removed. :-/
+     *
+     * @private {!Object.<string, !Object>}
+     */
+    private listens_;
+    /**
+     * @param {!Query} query
+     * @param {?number=} tag
+     * @return {string}
+     * @private
+     */
+    static getListenId_(query: Query, tag?: number | null): string;
+    /**
+     * @param {!RepoInfo} repoInfo_ Data about the namespace we are connecting to
+     * @param {function(string, *, boolean, ?number)} onDataUpdate_ A callback for new data from the server
+     * @param {AuthTokenProvider} authTokenProvider_
+     * @implements {ServerActions}
+     */
+    constructor(repoInfo_: RepoInfo, onDataUpdate_: (a: string, b: unknown, c: boolean, d: number | null) => void, authTokenProvider_: AuthTokenProvider);
+    /** @inheritDoc */
+    listen(query: Query, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    /** @inheritDoc */
+    unlisten(query: Query, tag: number | null): void;
+    /** @inheritDoc */
+    refreshAuthToken(token: string): void;
+    /**
+     * Performs a REST request to the given path, with the provided query string parameters,
+     * and any auth credentials we have.
+     *
+     * @param {!string} pathString
+     * @param {!Object.<string, *>} queryStringParameters
+     * @param {?function(?number, *=)} callback
+     * @private
+     */
+    private restRequest_;
+}

node_modules/@firebase/database/dist/src/core/Repo.d.ts

@@ -0,0 +1,100 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './util/Path';
+import { PersistentConnection } from './PersistentConnection';
+import { FirebaseApp } from '@firebase/app-types';
+import { RepoInfo } from './RepoInfo';
+import { Database } from '../api/Database';
+import { Query } from '../api/Query';
+import { EventRegistration } from './view/EventRegistration';
+import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
+import { Provider } from '@firebase/component';
+import { Indexable } from './util/misc';
+/**
+ * A connection to a single data repository.
+ */
+export declare class Repo {
+    repoInfo_: RepoInfo;
+    app: FirebaseApp;
+    dataUpdateCount: number;
+    private infoSyncTree_;
+    private serverSyncTree_;
+    private stats_;
+    private statsListener_;
+    private eventQueue_;
+    private nextWriteId_;
+    private server_;
+    private statsReporter_;
+    private transactionsInit_;
+    private infoData_;
+    private abortTransactions_;
+    private rerunTransactions_;
+    private interceptServerDataCallback_;
+    private __database;
+    /** A list of data pieces and paths to be set when this client disconnects. */
+    private onDisconnect_;
+    persistentConnection_: PersistentConnection | null;
+    constructor(repoInfo_: RepoInfo, forceRestClient: boolean, app: FirebaseApp, authProvider: Provider<FirebaseAuthInternalName>);
+    /**
+     * @return The URL corresponding to the root of this Firebase.
+     */
+    toString(): string;
+    /**
+     * @return The namespace represented by the repo.
+     */
+    name(): string;
+    /**
+     * @return The time in milliseconds, taking the server offset into account if we have one.
+     */
+    serverTime(): number;
+    /**
+     * Generate ServerValues using some variables from the repo object.
+     */
+    generateServerValues(): Indexable;
+    /**
+     * Called by realtime when we get new messages from the server.
+     */
+    private onDataUpdate_;
+    interceptServerData_(callback: ((a: string, b: unknown) => unknown) | null): void;
+    private onConnectStatus_;
+    private onServerInfoUpdate_;
+    private updateInfo_;
+    private getNextWriteId_;
+    setWithPriority(path: Path, newVal: unknown, newPriority: number | string | null, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    update(path: Path, childrenToMerge: {
+        [k: string]: unknown;
+    }, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    /**
+     * Applies all of the changes stored up in the onDisconnect_ tree.
+     */
+    private runOnDisconnectEvents_;
+    onDisconnectCancel(path: Path, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    onDisconnectSet(path: Path, value: unknown, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    onDisconnectSetWithPriority(path: Path, value: unknown, priority: unknown, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    onDisconnectUpdate(path: Path, childrenToMerge: {
+        [k: string]: unknown;
+    }, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+    addEventCallbackForQuery(query: Query, eventRegistration: EventRegistration): void;
+    removeEventCallbackForQuery(query: Query, eventRegistration: EventRegistration): void;
+    interrupt(): void;
+    resume(): void;
+    stats(showDelta?: boolean): void;
+    statsIncrementCounter(metric: string): void;
+    private log_;
+    callOnCompleteCallback(callback: ((status: Error | null, errorReason?: string) => void) | null, status: string, errorReason?: string | null): void;
+    get database(): Database;
+}

node_modules/@firebase/database/dist/src/core/RepoInfo.d.ts

@@ -0,0 +1,57 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * A class that holds metadata about a Repo object
+ *
+ * @constructor
+ */
+export declare class RepoInfo {
+    secure: boolean;
+    namespace: string;
+    webSocketOnly: boolean;
+    persistenceKey: string;
+    includeNamespaceInQueryParams: boolean;
+    host: string;
+    domain: string;
+    internalHost: string;
+    /**
+     * @param {string} host Hostname portion of the url for the repo
+     * @param {boolean} secure Whether or not this repo is accessed over ssl
+     * @param {string} namespace The namespace represented by the repo
+     * @param {boolean} webSocketOnly Whether to prefer websockets over all other transports (used by Nest).
+     * @param {string=} persistenceKey Override the default session persistence storage key
+     */
+    constructor(host: string, secure: boolean, namespace: string, webSocketOnly: boolean, persistenceKey?: string, includeNamespaceInQueryParams?: boolean);
+    needsQueryParam(): boolean;
+    isCacheableHost(): boolean;
+    isDemoHost(): boolean;
+    isCustomHost(): boolean;
+    updateHost(newHost: string): void;
+    /**
+     * Returns the websocket URL for this repo
+     * @param {string} type of connection
+     * @param {Object} params list
+     * @return {string} The URL for this repo
+     */
+    connectionURL(type: string, params: {
+        [k: string]: string;
+    }): string;
+    /** @return {string} */
+    toString(): string;
+    /** @return {string} */
+    toURLString(): string;
+}

node_modules/@firebase/database/dist/src/core/RepoManager.d.ts

@@ -0,0 +1,67 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { FirebaseApp } from '@firebase/app-types';
+import { Repo } from './Repo';
+import './Repo_transaction';
+import { Database } from '../api/Database';
+import { RepoInfo } from './RepoInfo';
+import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
+import { Provider } from '@firebase/component';
+/**
+ * Creates and caches Repo instances.
+ */
+export declare class RepoManager {
+    /**
+     * @private {!Object.<string, Object<string, !fb.core.Repo>>}
+     */
+    private repos_;
+    /**
+     * If true, new Repos will be created to use ReadonlyRestClient (for testing purposes).
+     * @private {boolean}
+     */
+    private useRestClient_;
+    static getInstance(): RepoManager;
+    interrupt(): void;
+    resume(): void;
+    /**
+     * This function should only ever be called to CREATE a new database instance.
+     *
+     * @param {!FirebaseApp} app
+     * @return {!Database}
+     */
+    databaseFromApp(app: FirebaseApp, authProvider: Provider<FirebaseAuthInternalName>, url?: string): Database;
+    /**
+     * Remove the repo and make sure it is disconnected.
+     *
+     * @param {!Repo} repo
+     */
+    deleteRepo(repo: Repo): void;
+    /**
+     * Ensures a repo doesn't already exist and then creates one using the
+     * provided app.
+     *
+     * @param {!RepoInfo} repoInfo The metadata about the Repo
+     * @param {!FirebaseApp} app
+     * @return {!Repo} The Repo object for the specified server / repoName.
+     */
+    createRepo(repoInfo: RepoInfo, app: FirebaseApp, authProvider: Provider<FirebaseAuthInternalName>): Repo;
+    /**
+     * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.
+     * @param {boolean} forceRestClient
+     */
+    forceRestClient(forceRestClient: boolean): void;
+}

node_modules/@firebase/database/dist/src/core/Repo_transaction.d.ts

@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { DataSnapshot } from '../api/DataSnapshot';
+import { Path } from './util/Path';
+/**
+ * @enum {number}
+ */
+export declare enum TransactionStatus {
+    RUN = 0,
+    SENT = 1,
+    COMPLETED = 2,
+    SENT_NEEDS_ABORT = 3,
+    NEEDS_ABORT = 4
+}
+declare module './Repo' {
+    interface Repo {
+        startTransaction(path: Path, transactionUpdate: (a: unknown) => void, onComplete: ((a: Error, b: boolean, c: DataSnapshot) => void) | null, applyLocally: boolean): void;
+    }
+}

node_modules/@firebase/database/dist/src/core/ServerActions.d.ts

@@ -0,0 +1,81 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Query } from '../api/Query';
+/**
+ * Interface defining the set of actions that can be performed against the Firebase server
+ * (basically corresponds to our wire protocol).
+ *
+ * @interface
+ */
+export declare abstract class ServerActions {
+    /**
+     * @param {!Query} query
+     * @param {function():string} currentHashFn
+     * @param {?number} tag
+     * @param {function(string, *)} onComplete
+     */
+    abstract listen(query: Query, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    /**
+     * Remove a listen.
+     *
+     * @param {!Query} query
+     * @param {?number} tag
+     */
+    abstract unlisten(query: Query, tag: number | null): void;
+    /**
+     * @param {string} pathString
+     * @param {*} data
+     * @param {function(string, string)=} onComplete
+     * @param {string=} hash
+     */
+    put(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void, hash?: string): void;
+    /**
+     * @param {string} pathString
+     * @param {*} data
+     * @param {function(string, ?string)} onComplete
+     * @param {string=} hash
+     */
+    merge(pathString: string, data: unknown, onComplete: (a: string, b: string | null) => void, hash?: string): void;
+    /**
+     * Refreshes the auth token for the current connection.
+     * @param {string} token The authentication token
+     */
+    refreshAuthToken(token: string): void;
+    /**
+     * @param {string} pathString
+     * @param {*} data
+     * @param {function(string, string)=} onComplete
+     */
+    onDisconnectPut(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    /**
+     * @param {string} pathString
+     * @param {*} data
+     * @param {function(string, string)=} onComplete
+     */
+    onDisconnectMerge(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    /**
+     * @param {string} pathString
+     * @param {function(string, string)=} onComplete
+     */
+    onDisconnectCancel(pathString: string, onComplete?: (a: string, b: string) => void): void;
+    /**
+     * @param {Object.<string, *>} stats
+     */
+    reportStats(stats: {
+        [k: string]: unknown;
+    }): void;
+}

node_modules/@firebase/database/dist/src/core/SnapshotHolder.d.ts

@@ -0,0 +1,28 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './util/Path';
+import { Node } from './snap/Node';
+/**
+ * Mutable object which basically just stores a reference to the "latest" immutable snapshot.
+ *
+ * @constructor
+ */
+export declare class SnapshotHolder {
+    private rootNode_;
+    getNode(path: Path): Node;
+    updateSnapshot(path: Path, newSnapshotNode: Node): void;
+}

node_modules/@firebase/database/dist/src/core/SparseSnapshotTree.d.ts

@@ -0,0 +1,61 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './util/Path';
+import { Node } from './snap/Node';
+/**
+ * Helper class to store a sparse set of snapshots.
+ */
+export declare class SparseSnapshotTree {
+    private value;
+    private readonly children;
+    /**
+     * Gets the node stored at the given path if one exists.
+     *
+     * @param path Path to look up snapshot for.
+     * @return The retrieved node, or null.
+     */
+    find(path: Path): Node | null;
+    /**
+     * Stores the given node at the specified path. If there is already a node
+     * at a shallower path, it merges the new data into that snapshot node.
+     *
+     * @param path Path to look up snapshot for.
+     * @param data The new data, or null.
+     */
+    remember(path: Path, data: Node): void;
+    /**
+     * Purge the data at path from the cache.
+     *
+     * @param path Path to look up snapshot for.
+     * @return True if this node should now be removed.
+     */
+    forget(path: Path): boolean;
+    /**
+     * Recursively iterates through all of the stored tree and calls the
+     * callback on each one.
+     *
+     * @param prefixPath Path to look up node for.
+     * @param func The function to invoke for each tree.
+     */
+    forEachTree(prefixPath: Path, func: (a: Path, b: Node) => unknown): void;
+    /**
+     * Iterates through each immediate child and triggers the callback.
+     *
+     * @param func The function to invoke for each child.
+     */
+    forEachChild(func: (a: string, b: SparseSnapshotTree) => void): void;
+}

node_modules/@firebase/database/dist/src/core/SyncPoint.d.ts

@@ -0,0 +1,84 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { View } from './view/View';
+import { Operation } from './operation/Operation';
+import { WriteTreeRef } from './WriteTree';
+import { Query } from '../api/Query';
+import { EventRegistration } from './view/EventRegistration';
+import { Node } from './snap/Node';
+import { Path } from './util/Path';
+import { Event } from './view/Event';
+import { ReferenceConstructor } from '../api/Reference';
+/**
+ * SyncPoint represents a single location in a SyncTree with 1 or more event registrations, meaning we need to
+ * maintain 1 or more Views at this location to cache server data and raise appropriate events for server changes
+ * and user writes (set, transaction, update).
+ *
+ * It's responsible for:
+ *  - Maintaining the set of 1 or more views necessary at this location (a SyncPoint with 0 views should be removed).
+ *  - Proxying user / server operations to the views as appropriate (i.e. applyServerOverwrite,
+ *    applyUserOverwrite, etc.)
+ */
+export declare class SyncPoint {
+    static set __referenceConstructor(val: ReferenceConstructor);
+    static get __referenceConstructor(): ReferenceConstructor;
+    /**
+     * The Views being tracked at this location in the tree, stored as a map where the key is a
+     * queryId and the value is the View for that query.
+     *
+     * NOTE: This list will be quite small (usually 1, but perhaps 2 or 3; any more is an odd use case).
+     */
+    private readonly views;
+    isEmpty(): boolean;
+    applyOperation(operation: Operation, writesCache: WriteTreeRef, optCompleteServerCache: Node | null): Event[];
+    /**
+     * Add an event callback for the specified query.
+     *
+     * @param {!Query} query
+     * @param {!EventRegistration} eventRegistration
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} serverCache Complete server cache, if we have it.
+     * @param {boolean} serverCacheComplete
+     * @return {!Array.<!Event>} Events to raise.
+     */
+    addEventRegistration(query: Query, eventRegistration: EventRegistration, writesCache: WriteTreeRef, serverCache: Node | null, serverCacheComplete: boolean): Event[];
+    /**
+     * Remove event callback(s).  Return cancelEvents if a cancelError is specified.
+     *
+     * If query is the default query, we'll check all views for the specified eventRegistration.
+     * If eventRegistration is null, we'll remove all callbacks for the specified view(s).
+     *
+     * @param {!Query} query
+     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.
+     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.
+     * @return {{removed:!Array.<!Query>, events:!Array.<!Event>}} removed queries and any cancel events
+     */
+    removeEventRegistration(query: Query, eventRegistration: EventRegistration | null, cancelError?: Error): {
+        removed: Query[];
+        events: Event[];
+    };
+    getQueryViews(): View[];
+    /**
+     * @param path The path to the desired complete snapshot
+     * @return A complete cache, if it exists
+     */
+    getCompleteServerCache(path: Path): Node | null;
+    viewForQuery(query: Query): View | null;
+    viewExistsForQuery(query: Query): boolean;
+    hasCompleteView(): boolean;
+    getCompleteView(): View | null;
+}

node_modules/@firebase/database/dist/src/core/SyncTree.d.ts

@@ -0,0 +1,234 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './util/Path';
+import { Query } from '../api/Query';
+import { Node } from './snap/Node';
+import { Event } from './view/Event';
+import { EventRegistration } from './view/EventRegistration';
+/**
+ * @typedef {{
+ *   startListening: function(
+ *     !Query,
+ *     ?number,
+ *     function():string,
+ *     function(!string, *):!Array.<!Event>
+ *   ):!Array.<!Event>,
+ *
+ *   stopListening: function(!Query, ?number)
+ * }}
+ */
+export interface ListenProvider {
+    startListening(query: Query, tag: number | null, hashFn: () => string, onComplete: (a: string, b?: unknown) => Event[]): Event[];
+    stopListening(a: Query, b: number | null): void;
+}
+/**
+ * SyncTree is the central class for managing event callback registration, data caching, views
+ * (query processing), and event generation.  There are typically two SyncTree instances for
+ * each Repo, one for the normal Firebase data, and one for the .info data.
+ *
+ * It has a number of responsibilities, including:
+ *  - Tracking all user event callbacks (registered via addEventRegistration() and removeEventRegistration()).
+ *  - Applying and caching data changes for user set(), transaction(), and update() calls
+ *    (applyUserOverwrite(), applyUserMerge()).
+ *  - Applying and caching data changes for server data changes (applyServerOverwrite(),
+ *    applyServerMerge()).
+ *  - Generating user-facing events for server and user changes (all of the apply* methods
+ *    return the set of events that need to be raised as a result).
+ *  - Maintaining the appropriate set of server listens to ensure we are always subscribed
+ *    to the correct set of paths and queries to satisfy the current set of user event
+ *    callbacks (listens are started/stopped using the provided listenProvider).
+ *
+ * NOTE: Although SyncTree tracks event callbacks and calculates events to raise, the actual
+ * events are returned to the caller rather than raised synchronously.
+ *
+ * @constructor
+ */
+export declare class SyncTree {
+    private listenProvider_;
+    /**
+     * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.
+     */
+    private syncPointTree_;
+    /**
+     * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).
+     */
+    private pendingWriteTree_;
+    private readonly tagToQueryMap;
+    private readonly queryToTagMap;
+    /**
+     * @param {!ListenProvider} listenProvider_ Used by SyncTree to start / stop listening
+     *   to server data.
+     */
+    constructor(listenProvider_: ListenProvider);
+    /**
+     * Apply the data changes for a user-generated set() or transaction() call.
+     *
+     * @return Events to raise.
+     */
+    applyUserOverwrite(path: Path, newData: Node, writeId: number, visible?: boolean): Event[];
+    /**
+     * Apply the data from a user-generated update() call
+     *
+     * @return Events to raise.
+     */
+    applyUserMerge(path: Path, changedChildren: {
+        [k: string]: Node;
+    }, writeId: number): Event[];
+    /**
+     * Acknowledge a pending user write that was previously registered with applyUserOverwrite() or applyUserMerge().
+     *
+     * @param revert True if the given write failed and needs to be reverted
+     * @return Events to raise.
+     */
+    ackUserWrite(writeId: number, revert?: boolean): Event[];
+    /**
+     * Apply new server data for the specified path..
+     *
+     * @return Events to raise.
+     */
+    applyServerOverwrite(path: Path, newData: Node): Event[];
+    /**
+     * Apply new server data to be merged in at the specified path.
+     *
+     * @return Events to raise.
+     */
+    applyServerMerge(path: Path, changedChildren: {
+        [k: string]: Node;
+    }): Event[];
+    /**
+     * Apply a listen complete for a query
+     *
+     * @return Events to raise.
+     */
+    applyListenComplete(path: Path): Event[];
+    /**
+     * Apply new server data for the specified tagged query.
+     *
+     * @return Events to raise.
+     */
+    applyTaggedQueryOverwrite(path: Path, snap: Node, tag: number): Event[];
+    /**
+     * Apply server data to be merged in for the specified tagged query.
+     *
+     * @return Events to raise.
+     */
+    applyTaggedQueryMerge(path: Path, changedChildren: {
+        [k: string]: Node;
+    }, tag: number): Event[];
+    /**
+     * Apply a listen complete for a tagged query
+     *
+     * @return Events to raise.
+     */
+    applyTaggedListenComplete(path: Path, tag: number): Event[];
+    /**
+     * Add an event callback for the specified query.
+     *
+     * @return Events to raise.
+     */
+    addEventRegistration(query: Query, eventRegistration: EventRegistration): Event[];
+    /**
+     * Remove event callback(s).
+     *
+     * If query is the default query, we'll check all queries for the specified eventRegistration.
+     * If eventRegistration is null, we'll remove all callbacks for the specified query/queries.
+     *
+     * @param eventRegistration If null, all callbacks are removed.
+     * @param cancelError If a cancelError is provided, appropriate cancel events will be returned.
+     * @return Cancel events, if cancelError was provided.
+     */
+    removeEventRegistration(query: Query, eventRegistration: EventRegistration | null, cancelError?: Error): Event[];
+    /**
+     * Returns a complete cache, if we have one, of the data at a particular path. The location must have a listener above
+     * it, but as this is only used by transaction code, that should always be the case anyways.
+     *
+     * Note: this method will *include* hidden writes from transaction with applyLocally set to false.
+     *
+     * @param path The path to the data we want
+     * @param writeIdsToExclude A specific set to be excluded
+     */
+    calcCompleteEventCache(path: Path, writeIdsToExclude?: number[]): Node | null;
+    /**
+     * This collapses multiple unfiltered views into a single view, since we only need a single
+     * listener for them.
+     */
+    private collectDistinctViewsForSubTree_;
+    private removeTags_;
+    /**
+     * Normalizes a query to a query we send the server for listening
+     *
+     * @return The normalized query
+     */
+    private static queryForListening_;
+    /**
+     * For a given new listen, manage the de-duplication of outstanding subscriptions.
+     *
+     * @return This method can return events to support synchronous data sources
+     */
+    private setupListener_;
+    private createListenerForView_;
+    /**
+     * Given a query, computes a "queryKey" suitable for use in our queryToTagMap_.
+     */
+    private static makeQueryKey_;
+    /**
+     * Given a queryKey (created by makeQueryKey), parse it back into a path and queryId.
+     */
+    private static parseQueryKey_;
+    /**
+     * Return the query associated with the given tag, if we have one
+     */
+    private queryKeyForTag_;
+    /**
+     * Return the tag associated with the given query.
+     */
+    private tagForQuery_;
+    /**
+     * Static tracker for next query tag.
+     */
+    private static nextQueryTag_;
+    /**
+     * Static accessor for query tags.
+     */
+    private static getNextQueryTag_;
+    /**
+     * A helper method to apply tagged operations
+     */
+    private applyTaggedOperation_;
+    /**
+     * A helper method that visits all descendant and ancestor SyncPoints, applying the operation.
+     *
+     * NOTES:
+     * - Descendant SyncPoints will be visited first (since we raise events depth-first).
+     *
+     * - We call applyOperation() on each SyncPoint passing three things:
+     *   1. A version of the Operation that has been made relative to the SyncPoint location.
+     *   2. A WriteTreeRef of any writes we have cached at the SyncPoint location.
+     *   3. A snapshot Node with cached server data, if we have it.
+     *
+     * - We concatenate all of the events returned by each SyncPoint and return the result.
+     */
+    private applyOperationToSyncPoints_;
+    /**
+     * Recursive helper for applyOperationToSyncPoints_
+     */
+    private applyOperationHelper_;
+    /**
+     * Recursive helper for applyOperationToSyncPoints_
+     */
+    private applyOperationDescendantsHelper_;
+}

node_modules/@firebase/database/dist/src/core/WriteTree.d.ts

@@ -0,0 +1,295 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './util/Path';
+import { ChildrenNode } from './snap/ChildrenNode';
+import { NamedNode, Node } from './snap/Node';
+import { CacheNode } from './view/CacheNode';
+import { Index } from './snap/indexes/Index';
+/**
+ * Defines a single user-initiated write operation. May be the result of a set(), transaction(), or update() call. In
+ * the case of a set() or transaction, snap wil be non-null.  In the case of an update(), children will be non-null.
+ */
+export interface WriteRecord {
+    writeId: number;
+    path: Path;
+    snap?: Node | null;
+    children?: {
+        [k: string]: Node;
+    } | null;
+    visible: boolean;
+}
+/**
+ * WriteTree tracks all pending user-initiated writes and has methods to calculate the result of merging them
+ * with underlying server data (to create "event cache" data).  Pending writes are added with addOverwrite()
+ * and addMerge(), and removed with removeWrite().
+ *
+ * @constructor
+ */
+export declare class WriteTree {
+    /**
+     * A tree tracking the result of applying all visible writes.  This does not include transactions with
+     * applyLocally=false or writes that are completely shadowed by other writes.
+     *
+     * @type {!CompoundWrite}
+     * @private
+     */
+    private visibleWrites_;
+    /**
+     * A list of all pending writes, regardless of visibility and shadowed-ness.  Used to calculate arbitrary
+     * sets of the changed data, such as hidden writes (from transactions) or changes with certain writes excluded (also
+     * used by transactions).
+     *
+     * @type {!Array.<!WriteRecord>}
+     * @private
+     */
+    private allWrites_;
+    private lastWriteId_;
+    /**
+     * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.
+     *
+     * @param {!Path} path
+     * @return {!WriteTreeRef}
+     */
+    childWrites(path: Path): WriteTreeRef;
+    /**
+     * Record a new overwrite from user code.
+     *
+     * @param {!Path} path
+     * @param {!Node} snap
+     * @param {!number} writeId
+     * @param {boolean=} visible This is set to false by some transactions. It should be excluded from event caches
+     */
+    addOverwrite(path: Path, snap: Node, writeId: number, visible?: boolean): void;
+    /**
+     * Record a new merge from user code.
+     *
+     * @param {!Path} path
+     * @param {!Object.<string, !Node>} changedChildren
+     * @param {!number} writeId
+     */
+    addMerge(path: Path, changedChildren: {
+        [k: string]: Node;
+    }, writeId: number): void;
+    /**
+     * @param {!number} writeId
+     * @return {?WriteRecord}
+     */
+    getWrite(writeId: number): WriteRecord | null;
+    /**
+     * Remove a write (either an overwrite or merge) that has been successfully acknowledge by the server. Recalculates
+     * the tree if necessary.  We return true if it may have been visible, meaning views need to reevaluate.
+     *
+     * @param {!number} writeId
+     * @return {boolean} true if the write may have been visible (meaning we'll need to reevaluate / raise
+     * events as a result).
+     */
+    removeWrite(writeId: number): boolean;
+    /**
+     * Return a complete snapshot for the given path if there's visible write data at that path, else null.
+     * No server data is considered.
+     *
+     * @param {!Path} path
+     * @return {?Node}
+     */
+    getCompleteWriteData(path: Path): Node | null;
+    /**
+     * Given optional, underlying server data, and an optional set of constraints (exclude some sets, include hidden
+     * writes), attempt to calculate a complete snapshot for the given path
+     *
+     * @param {!Path} treePath
+     * @param {?Node} completeServerCache
+     * @param {Array.<number>=} writeIdsToExclude An optional set to be excluded
+     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false
+     * @return {?Node}
+     */
+    calcCompleteEventCache(treePath: Path, completeServerCache: Node | null, writeIdsToExclude?: number[], includeHiddenWrites?: boolean): Node | null;
+    /**
+     * With optional, underlying server data, attempt to return a children node of children that we have complete data for.
+     * Used when creating new views, to pre-fill their complete event children snapshot.
+     *
+     * @param {!Path} treePath
+     * @param {?ChildrenNode} completeServerChildren
+     * @return {!ChildrenNode}
+     */
+    calcCompleteEventChildren(treePath: Path, completeServerChildren: ChildrenNode | null): Node;
+    /**
+     * Given that the underlying server data has updated, determine what, if anything, needs to be
+     * applied to the event cache.
+     *
+     * Possibilities:
+     *
+     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data
+     *
+     * 2. Some write is completely shadowing. No events to be raised
+     *
+     * 3. Is partially shadowed. Events
+     *
+     * Either existingEventSnap or existingServerSnap must exist
+     *
+     * @param {!Path} treePath
+     * @param {!Path} childPath
+     * @param {?Node} existingEventSnap
+     * @param {?Node} existingServerSnap
+     * @return {?Node}
+     */
+    calcEventCacheAfterServerOverwrite(treePath: Path, childPath: Path, existingEventSnap: Node | null, existingServerSnap: Node | null): Node | null;
+    /**
+     * Returns a complete child for a given server snap after applying all user writes or null if there is no
+     * complete child for this ChildKey.
+     *
+     * @param {!Path} treePath
+     * @param {!string} childKey
+     * @param {!CacheNode} existingServerSnap
+     * @return {?Node}
+     */
+    calcCompleteChild(treePath: Path, childKey: string, existingServerSnap: CacheNode): Node | null;
+    /**
+     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at
+     * a higher path, this will return the child of that write relative to the write and this path.
+     * Returns null if there is no write at this path.
+     */
+    shadowingWrite(path: Path): Node | null;
+    /**
+     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside
+     * the window, but may now be in the window.
+     */
+    calcIndexedSlice(treePath: Path, completeServerData: Node | null, startPost: NamedNode, count: number, reverse: boolean, index: Index): NamedNode[];
+    private recordContainsPath_;
+    /**
+     * Re-layer the writes and merges into a tree so we can efficiently calculate event snapshots
+     */
+    private resetTree_;
+    /**
+     * The default filter used when constructing the tree. Keep everything that's visible.
+     */
+    private static DefaultFilter_;
+    /**
+     * Static method. Given an array of WriteRecords, a filter for which ones to include, and a path, construct the tree of
+     * event data at that path.
+     */
+    private static layerTree_;
+}
+/**
+ * A WriteTreeRef wraps a WriteTree and a path, for convenient access to a particular subtree.  All of the methods
+ * just proxy to the underlying WriteTree.
+ *
+ * @constructor
+ */
+export declare class WriteTreeRef {
+    /**
+     * The path to this particular write tree ref. Used for calling methods on writeTree_ while exposing a simpler
+     * interface to callers.
+     *
+     * @type {!Path}
+     * @private
+     * @const
+     */
+    private readonly treePath_;
+    /**
+     * * A reference to the actual tree of write data. All methods are pass-through to the tree, but with the appropriate
+     * path prefixed.
+     *
+     * This lets us make cheap references to points in the tree for sync points without having to copy and maintain all of
+     * the data.
+     *
+     * @type {!WriteTree}
+     * @private
+     * @const
+     */
+    private readonly writeTree_;
+    /**
+     * @param {!Path} path
+     * @param {!WriteTree} writeTree
+     */
+    constructor(path: Path, writeTree: WriteTree);
+    /**
+     * If possible, returns a complete event cache, using the underlying server data if possible. In addition, can be used
+     * to get a cache that includes hidden writes, and excludes arbitrary writes. Note that customizing the returned node
+     * can lead to a more expensive calculation.
+     *
+     * @param {?Node} completeServerCache
+     * @param {Array.<number>=} writeIdsToExclude Optional writes to exclude.
+     * @param {boolean=} includeHiddenWrites Defaults to false, whether or not to layer on writes with visible set to false
+     * @return {?Node}
+     */
+    calcCompleteEventCache(completeServerCache: Node | null, writeIdsToExclude?: number[], includeHiddenWrites?: boolean): Node | null;
+    /**
+     * If possible, returns a children node containing all of the complete children we have data for. The returned data is a
+     * mix of the given server data and write data.
+     *
+     * @param {?ChildrenNode} completeServerChildren
+     * @return {!ChildrenNode}
+     */
+    calcCompleteEventChildren(completeServerChildren: ChildrenNode | null): ChildrenNode;
+    /**
+     * Given that either the underlying server data has updated or the outstanding writes have updated, determine what,
+     * if anything, needs to be applied to the event cache.
+     *
+     * Possibilities:
+     *
+     * 1. No writes are shadowing. Events should be raised, the snap to be applied comes from the server data
+     *
+     * 2. Some write is completely shadowing. No events to be raised
+     *
+     * 3. Is partially shadowed. Events should be raised
+     *
+     * Either existingEventSnap or existingServerSnap must exist, this is validated via an assert
+     *
+     * @param {!Path} path
+     * @param {?Node} existingEventSnap
+     * @param {?Node} existingServerSnap
+     * @return {?Node}
+     */
+    calcEventCacheAfterServerOverwrite(path: Path, existingEventSnap: Node | null, existingServerSnap: Node | null): Node | null;
+    /**
+     * Returns a node if there is a complete overwrite for this path. More specifically, if there is a write at
+     * a higher path, this will return the child of that write relative to the write and this path.
+     * Returns null if there is no write at this path.
+     *
+     * @param {!Path} path
+     * @return {?Node}
+     */
+    shadowingWrite(path: Path): Node | null;
+    /**
+     * This method is used when processing child remove events on a query. If we can, we pull in children that were outside
+     * the window, but may now be in the window
+     *
+     * @param {?Node} completeServerData
+     * @param {!NamedNode} startPost
+     * @param {!number} count
+     * @param {boolean} reverse
+     * @param {!Index} index
+     * @return {!Array.<!NamedNode>}
+     */
+    calcIndexedSlice(completeServerData: Node | null, startPost: NamedNode, count: number, reverse: boolean, index: Index): NamedNode[];
+    /**
+     * Returns a complete child for a given server snap after applying all user writes or null if there is no
+     * complete child for this ChildKey.
+     *
+     * @param {!string} childKey
+     * @param {!CacheNode} existingServerCache
+     * @return {?Node}
+     */
+    calcCompleteChild(childKey: string, existingServerCache: CacheNode): Node | null;
+    /**
+     * Return a WriteTreeRef for a child.
+     *
+     * @param {string} childName
+     * @return {!WriteTreeRef}
+     */
+    child(childName: string): WriteTreeRef;
+}

node_modules/@firebase/database/dist/src/core/operation/AckUserWrite.d.ts

@@ -0,0 +1,42 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+import { Operation, OperationSource, OperationType } from './Operation';
+import { ImmutableTree } from '../util/ImmutableTree';
+export declare class AckUserWrite implements Operation {
+    /** @inheritDoc */ path: Path;
+    /** @inheritDoc */ affectedTree: ImmutableTree<boolean>;
+    /** @inheritDoc */ revert: boolean;
+    /** @inheritDoc */
+    type: OperationType;
+    /** @inheritDoc */
+    source: OperationSource;
+    /**
+     *
+     * @param {!Path} path
+     * @param {!ImmutableTree<!boolean>} affectedTree A tree containing true for each affected path. Affected paths can't overlap.
+     * @param {!boolean} revert
+     */
+    constructor(
+    /** @inheritDoc */ path: Path, 
+    /** @inheritDoc */ affectedTree: ImmutableTree<boolean>, 
+    /** @inheritDoc */ revert: boolean);
+    /**
+     * @inheritDoc
+     */
+    operationForChild(childName: string): AckUserWrite;
+}

node_modules/@firebase/database/dist/src/core/operation/ListenComplete.d.ts

@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+import { Operation, OperationSource, OperationType } from './Operation';
+/**
+ * @param {!OperationSource} source
+ * @param {!Path} path
+ * @constructor
+ * @implements {Operation}
+ */
+export declare class ListenComplete implements Operation {
+    source: OperationSource;
+    path: Path;
+    /** @inheritDoc */
+    type: OperationType;
+    constructor(source: OperationSource, path: Path);
+    operationForChild(childName: string): ListenComplete;
+}

node_modules/@firebase/database/dist/src/core/operation/Merge.d.ts

@@ -0,0 +1,46 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Operation, OperationSource, OperationType } from './Operation';
+import { Path } from '../util/Path';
+import { ImmutableTree } from '../util/ImmutableTree';
+import { Node } from '../snap/Node';
+/**
+ * @param {!OperationSource} source
+ * @param {!Path} path
+ * @param {!ImmutableTree.<!Node>} children
+ * @constructor
+ * @implements {Operation}
+ */
+export declare class Merge implements Operation {
+    /** @inheritDoc */ source: OperationSource;
+    /** @inheritDoc */ path: Path;
+    /** @inheritDoc */ children: ImmutableTree<Node>;
+    /** @inheritDoc */
+    type: OperationType;
+    constructor(
+    /** @inheritDoc */ source: OperationSource, 
+    /** @inheritDoc */ path: Path, 
+    /** @inheritDoc */ children: ImmutableTree<Node>);
+    /**
+     * @inheritDoc
+     */
+    operationForChild(childName: string): Operation;
+    /**
+     * @inheritDoc
+     */
+    toString(): string;
+}

node_modules/@firebase/database/dist/src/core/operation/Operation.d.ts

@@ -0,0 +1,78 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+/**
+ *
+ * @enum
+ */
+export declare enum OperationType {
+    OVERWRITE = 0,
+    MERGE = 1,
+    ACK_USER_WRITE = 2,
+    LISTEN_COMPLETE = 3
+}
+/**
+ * @interface
+ */
+export interface Operation {
+    /**
+     * @type {!OperationSource}
+     */
+    source: OperationSource;
+    /**
+     * @type {!OperationType}
+     */
+    type: OperationType;
+    /**
+     * @type {!Path}
+     */
+    path: Path;
+    /**
+     * @param {string} childName
+     * @return {?Operation}
+     */
+    operationForChild(childName: string): Operation | null;
+}
+/**
+ * @param {boolean} fromUser
+ * @param {boolean} fromServer
+ * @param {?string} queryId
+ * @param {boolean} tagged
+ * @constructor
+ */
+export declare class OperationSource {
+    fromUser: boolean;
+    fromServer: boolean;
+    queryId: string | null;
+    tagged: boolean;
+    constructor(fromUser: boolean, fromServer: boolean, queryId: string | null, tagged: boolean);
+    /**
+     * @const
+     * @type {!OperationSource}
+     */
+    static User: OperationSource;
+    /**
+     * @const
+     * @type {!OperationSource}
+     */
+    static Server: OperationSource;
+    /**
+     * @param {string} queryId
+     * @return {!OperationSource}
+     */
+    static forServerTaggedQuery: (queryId: string) => OperationSource;
+}

node_modules/@firebase/database/dist/src/core/operation/Overwrite.d.ts

@@ -0,0 +1,35 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Operation, OperationSource, OperationType } from './Operation';
+import { Path } from '../util/Path';
+import { Node } from '../snap/Node';
+/**
+ * @param {!OperationSource} source
+ * @param {!Path} path
+ * @param {!Node} snap
+ * @constructor
+ * @implements {Operation}
+ */
+export declare class Overwrite implements Operation {
+    source: OperationSource;
+    path: Path;
+    snap: Node;
+    /** @inheritDoc */
+    type: OperationType;
+    constructor(source: OperationSource, path: Path, snap: Node);
+    operationForChild(childName: string): Overwrite;
+}

node_modules/@firebase/database/dist/src/core/snap/ChildrenNode.d.ts

@@ -0,0 +1,180 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { SortedMap, SortedMapIterator } from '../util/SortedMap';
+import { Node, NamedNode } from './Node';
+import { IndexMap } from './IndexMap';
+import { Index } from './indexes/Index';
+import { Path } from '../util/Path';
+export interface ChildrenNodeConstructor {
+    new (children_: SortedMap<string, Node>, priorityNode_: Node | null, indexMap_: IndexMap): ChildrenNode;
+    EMPTY_NODE: ChildrenNode;
+}
+/**
+ * ChildrenNode is a class for storing internal nodes in a DataSnapshot
+ * (i.e. nodes with children).  It implements Node and stores the
+ * list of children in the children property, sorted by child name.
+ *
+ * @constructor
+ * @implements {Node}
+ */
+export declare class ChildrenNode implements Node {
+    private readonly children_;
+    private readonly priorityNode_;
+    private indexMap_;
+    private lazyHash_;
+    static get EMPTY_NODE(): ChildrenNode;
+    /**
+     *
+     * @param {!SortedMap.<string, !Node>} children_ List of children
+     * of this node..
+     * @param {?Node} priorityNode_ The priority of this node (as a snapshot node).
+     * @param {!IndexMap} indexMap_
+     */
+    constructor(children_: SortedMap<string, Node>, priorityNode_: Node | null, indexMap_: IndexMap);
+    /** @inheritDoc */
+    isLeafNode(): boolean;
+    /** @inheritDoc */
+    getPriority(): Node;
+    /** @inheritDoc */
+    updatePriority(newPriorityNode: Node): Node;
+    /** @inheritDoc */
+    getImmediateChild(childName: string): Node;
+    /** @inheritDoc */
+    getChild(path: Path): Node;
+    /** @inheritDoc */
+    hasChild(childName: string): boolean;
+    /** @inheritDoc */
+    updateImmediateChild(childName: string, newChildNode: Node): Node;
+    /** @inheritDoc */
+    updateChild(path: Path, newChildNode: Node): Node;
+    /** @inheritDoc */
+    isEmpty(): boolean;
+    /** @inheritDoc */
+    numChildren(): number;
+    /**
+     * @private
+     * @type {RegExp}
+     */
+    private static INTEGER_REGEXP_;
+    /** @inheritDoc */
+    val(exportFormat?: boolean): object;
+    /** @inheritDoc */
+    hash(): string;
+    /** @inheritDoc */
+    getPredecessorChildName(childName: string, childNode: Node, index: Index): string;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {?string}
+     */
+    getFirstChildName(indexDefinition: Index): string | null;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {?NamedNode}
+     */
+    getFirstChild(indexDefinition: Index): NamedNode | null;
+    /**
+     * Given an index, return the key name of the largest value we have, according to that index
+     * @param {!Index} indexDefinition
+     * @return {?string}
+     */
+    getLastChildName(indexDefinition: Index): string | null;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {?NamedNode}
+     */
+    getLastChild(indexDefinition: Index): NamedNode | null;
+    /**
+     * @inheritDoc
+     */
+    forEachChild(index: Index, action: (key: string, node: Node) => boolean | void): boolean;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {SortedMapIterator}
+     */
+    getIterator(indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    /**
+     *
+     * @param {!NamedNode} startPost
+     * @param {!Index} indexDefinition
+     * @return {!SortedMapIterator}
+     */
+    getIteratorFrom(startPost: NamedNode, indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {!SortedMapIterator}
+     */
+    getReverseIterator(indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    /**
+     * @param {!NamedNode} endPost
+     * @param {!Index} indexDefinition
+     * @return {!SortedMapIterator}
+     */
+    getReverseIteratorFrom(endPost: NamedNode, indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    /**
+     * @inheritDoc
+     */
+    compareTo(other: ChildrenNode): number;
+    /**
+     * @inheritDoc
+     */
+    withIndex(indexDefinition: Index): Node;
+    /**
+     * @inheritDoc
+     */
+    isIndexed(index: Index): boolean;
+    /**
+     * @inheritDoc
+     */
+    equals(other: Node): boolean;
+    /**
+     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used
+     * instead.
+     *
+     * @private
+     * @param {!Index} indexDefinition
+     * @return {?SortedMap.<NamedNode, Node>}
+     */
+    private resolveIndex_;
+}
+/**
+ * @constructor
+ * @extends {ChildrenNode}
+ * @private
+ */
+export declare class MaxNode extends ChildrenNode {
+    constructor();
+    compareTo(other: Node): number;
+    equals(other: Node): boolean;
+    getPriority(): MaxNode;
+    getImmediateChild(childName: string): ChildrenNode;
+    isEmpty(): boolean;
+}
+/**
+ * Marker that will sort higher than any other snapshot.
+ * @type {!MAX_NODE}
+ * @const
+ */
+export declare const MAX_NODE: MaxNode;
+/**
+ * Document NamedNode extensions
+ */
+declare module './Node' {
+    interface NamedNode {
+        MIN: NamedNode;
+        MAX: NamedNode;
+    }
+}

node_modules/@firebase/database/dist/src/core/snap/IndexMap.d.ts

@@ -0,0 +1,43 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { NamedNode, Node } from './Node';
+import { SortedMap } from '../util/SortedMap';
+import { Index } from './indexes/Index';
+export declare class IndexMap {
+    private indexes_;
+    private indexSet_;
+    /**
+     * The default IndexMap for nodes without a priority
+     */
+    static get Default(): IndexMap;
+    constructor(indexes_: {
+        [k: string]: SortedMap<NamedNode, Node> | /*FallbackType*/ object;
+    }, indexSet_: {
+        [k: string]: Index;
+    });
+    get(indexKey: string): SortedMap<NamedNode, Node> | null;
+    hasIndex(indexDefinition: Index): boolean;
+    addIndex(indexDefinition: Index, existingChildren: SortedMap<string, Node>): IndexMap;
+    /**
+     * Ensure that this node is properly tracked in any indexes that we're maintaining
+     */
+    addToIndexes(namedNode: NamedNode, existingChildren: SortedMap<string, Node>): IndexMap;
+    /**
+     * Create a new IndexMap instance with the given value removed
+     */
+    removeFromIndexes(namedNode: NamedNode, existingChildren: SortedMap<string, Node>): IndexMap;
+}

node_modules/@firebase/database/dist/src/core/snap/LeafNode.d.ts

@@ -0,0 +1,107 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from './Node';
+import { Path } from '../util/Path';
+import { Index } from './indexes/Index';
+import { ChildrenNodeConstructor } from './ChildrenNode';
+import { Indexable } from '../util/misc';
+/**
+ * LeafNode is a class for storing leaf nodes in a DataSnapshot.  It
+ * implements Node and stores the value of the node (a string,
+ * number, or boolean) accessible via getValue().
+ */
+export declare class LeafNode implements Node {
+    private readonly value_;
+    private priorityNode_;
+    static set __childrenNodeConstructor(val: ChildrenNodeConstructor);
+    static get __childrenNodeConstructor(): ChildrenNodeConstructor;
+    /**
+     * The sort order for comparing leaf nodes of different types. If two leaf nodes have
+     * the same type, the comparison falls back to their value
+     * @type {Array.<!string>}
+     * @const
+     */
+    static VALUE_TYPE_ORDER: string[];
+    private lazyHash_;
+    /**
+     * @implements {Node}
+     * @param {!(string|number|boolean|Object)} value_ The value to store in this leaf node.
+     *                                         The object type is possible in the event of a deferred value
+     * @param {!Node=} priorityNode_ The priority of this node.
+     */
+    constructor(value_: string | number | boolean | Indexable, priorityNode_?: Node);
+    /** @inheritDoc */
+    isLeafNode(): boolean;
+    /** @inheritDoc */
+    getPriority(): Node;
+    /** @inheritDoc */
+    updatePriority(newPriorityNode: Node): Node;
+    /** @inheritDoc */
+    getImmediateChild(childName: string): Node;
+    /** @inheritDoc */
+    getChild(path: Path): Node;
+    /**
+     * @inheritDoc
+     */
+    hasChild(): boolean;
+    /** @inheritDoc */
+    getPredecessorChildName(childName: string, childNode: Node): null;
+    /** @inheritDoc */
+    updateImmediateChild(childName: string, newChildNode: Node): Node;
+    /** @inheritDoc */
+    updateChild(path: Path, newChildNode: Node): Node;
+    /** @inheritDoc */
+    isEmpty(): boolean;
+    /** @inheritDoc */
+    numChildren(): number;
+    /** @inheritDoc */
+    forEachChild(index: Index, action: (s: string, n: Node) => void): boolean;
+    /**
+     * @inheritDoc
+     */
+    val(exportFormat?: boolean): {};
+    /** @inheritDoc */
+    hash(): string;
+    /**
+     * Returns the value of the leaf node.
+     * @return {Object|string|number|boolean} The value of the node.
+     */
+    getValue(): Indexable | string | number | boolean;
+    /**
+     * @inheritDoc
+     */
+    compareTo(other: Node): number;
+    /**
+     * Comparison specifically for two leaf nodes
+     * @param {!LeafNode} otherLeaf
+     * @return {!number}
+     * @private
+     */
+    private compareToLeafNode_;
+    /**
+     * @inheritDoc
+     */
+    withIndex(): Node;
+    /**
+     * @inheritDoc
+     */
+    isIndexed(): boolean;
+    /**
+     * @inheritDoc
+     */
+    equals(other: Node): boolean;
+}

node_modules/@firebase/database/dist/src/core/snap/Node.d.ts

@@ -0,0 +1,148 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+import { Index } from './indexes/Index';
+/**
+ * Node is an interface defining the common functionality for nodes in
+ * a DataSnapshot.
+ *
+ * @interface
+ */
+export interface Node {
+    /**
+     * Whether this node is a leaf node.
+     * @return {boolean} Whether this is a leaf node.
+     */
+    isLeafNode(): boolean;
+    /**
+     * Gets the priority of the node.
+     * @return {!Node} The priority of the node.
+     */
+    getPriority(): Node;
+    /**
+     * Returns a duplicate node with the new priority.
+     * @param {!Node} newPriorityNode New priority to set for the node.
+     * @return {!Node} Node with new priority.
+     */
+    updatePriority(newPriorityNode: Node): Node;
+    /**
+     * Returns the specified immediate child, or null if it doesn't exist.
+     * @param {string} childName The name of the child to retrieve.
+     * @return {!Node} The retrieved child, or an empty node.
+     */
+    getImmediateChild(childName: string): Node;
+    /**
+     * Returns a child by path, or null if it doesn't exist.
+     * @param {!Path} path The path of the child to retrieve.
+     * @return {!Node} The retrieved child or an empty node.
+     */
+    getChild(path: Path): Node;
+    /**
+     * Returns the name of the child immediately prior to the specified childNode, or null.
+     * @param {!string} childName The name of the child to find the predecessor of.
+     * @param {!Node} childNode The node to find the predecessor of.
+     * @param {!Index} index The index to use to determine the predecessor
+     * @return {?string} The name of the predecessor child, or null if childNode is the first child.
+     */
+    getPredecessorChildName(childName: string, childNode: Node, index: Index): string | null;
+    /**
+     * Returns a duplicate node, with the specified immediate child updated.
+     * Any value in the node will be removed.
+     * @param {string} childName The name of the child to update.
+     * @param {!Node} newChildNode The new child node
+     * @return {!Node} The updated node.
+     */
+    updateImmediateChild(childName: string, newChildNode: Node): Node;
+    /**
+     * Returns a duplicate node, with the specified child updated.  Any value will
+     * be removed.
+     * @param {!Path} path The path of the child to update.
+     * @param {!Node} newChildNode The new child node, which may be an empty node
+     * @return {!Node} The updated node.
+     */
+    updateChild(path: Path, newChildNode: Node): Node;
+    /**
+     * True if the immediate child specified exists
+     * @param {!string} childName
+     * @return {boolean}
+     */
+    hasChild(childName: string): boolean;
+    /**
+     * @return {boolean} True if this node has no value or children.
+     */
+    isEmpty(): boolean;
+    /**
+     * @return {number} The number of children of this node.
+     */
+    numChildren(): number;
+    /**
+     * Calls action for each child.
+     * @param {!Index} index
+     * @param {function(string, !Node)} action Action to be called for
+     * each child.  It's passed the child name and the child node.
+     * @return {*} The first truthy value return by action, or the last falsey one
+     */
+    forEachChild(index: Index, action: (a: string, b: Node) => void): unknown;
+    /**
+     * @param exportFormat True for export format (also wire protocol format).
+     * @return Value of this node as JSON.
+     */
+    val(exportFormat?: boolean): unknown;
+    /**
+     * @return {string} hash representing the node contents.
+     */
+    hash(): string;
+    /**
+     * @param {!Node} other Another node
+     * @return {!number} -1 for less than, 0 for equal, 1 for greater than other
+     */
+    compareTo(other: Node): number;
+    /**
+     * @param {!Node} other
+     * @return {boolean} Whether or not this snapshot equals other
+     */
+    equals(other: Node): boolean;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {!Node} This node, with the specified index now available
+     */
+    withIndex(indexDefinition: Index): Node;
+    /**
+     * @param {!Index} indexDefinition
+     * @return {boolean}
+     */
+    isIndexed(indexDefinition: Index): boolean;
+}
+/**
+ *
+ * @param {!string} name
+ * @param {!Node} node
+ * @constructor
+ * @struct
+ */
+export declare class NamedNode {
+    name: string;
+    node: Node;
+    constructor(name: string, node: Node);
+    /**
+     *
+     * @param {!string} name
+     * @param {!Node} node
+     * @return {NamedNode}
+     */
+    static Wrap(name: string, node: Node): NamedNode;
+}

node_modules/@firebase/database/dist/src/core/snap/childSet.d.ts

@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { SortedMap } from '../util/SortedMap';
+import { NamedNode } from './Node';
+/**
+ * Takes a list of child nodes and constructs a SortedSet using the given comparison
+ * function
+ *
+ * Uses the algorithm described in the paper linked here:
+ * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.46.1458
+ *
+ * @template K, V
+ * @param {Array.<!NamedNode>} childList Unsorted list of children
+ * @param {function(!NamedNode, !NamedNode):number} cmp The comparison method to be used
+ * @param {(function(NamedNode):K)=} keyFn An optional function to extract K from a node wrapper, if K's
+ *                                                        type is not NamedNode
+ * @param {(function(K, K):number)=} mapSortFn An optional override for comparator used by the generated sorted map
+ * @return {SortedMap.<K, V>}
+ */
+export declare const buildChildSet: <K, V>(childList: NamedNode[], cmp: (a: NamedNode, b: NamedNode) => number, keyFn?: (a: NamedNode) => K, mapSortFn?: (a: K, b: K) => number) => SortedMap<K, V>;

node_modules/@firebase/database/dist/src/core/snap/comparators.d.ts

@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { NamedNode } from './Node';
+export declare function NAME_ONLY_COMPARATOR(left: NamedNode, right: NamedNode): number;
+export declare function NAME_COMPARATOR(left: string, right: string): number;

node_modules/@firebase/database/dist/src/core/snap/indexes/Index.d.ts

@@ -0,0 +1,69 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node, NamedNode } from '../Node';
+import { Comparator } from '../../util/SortedMap';
+/**
+ *
+ * @constructor
+ */
+export declare abstract class Index {
+    /**
+     * @param {!NamedNode} a
+     * @param {!NamedNode} b
+     * @return {number}
+     */
+    abstract compare(a: NamedNode, b: NamedNode): number;
+    /**
+     * @param {!Node} node
+     * @return {boolean}
+     */
+    abstract isDefinedOn(node: Node): boolean;
+    /**
+     * @return {function(!NamedNode, !NamedNode):number} A standalone comparison function for
+     * this index
+     */
+    getCompare(): Comparator<NamedNode>;
+    /**
+     * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,
+     * it's possible that the changes are isolated to parts of the snapshot that are not indexed.
+     *
+     * @param {!Node} oldNode
+     * @param {!Node} newNode
+     * @return {boolean} True if the portion of the snapshot being indexed changed between oldNode and newNode
+     */
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    /**
+     * @return {!NamedNode} a node wrapper that will sort equal to or less than
+     * any other node wrapper, using this index
+     */
+    minPost(): NamedNode;
+    /**
+     * @return {!NamedNode} a node wrapper that will sort greater than or equal to
+     * any other node wrapper, using this index
+     */
+    abstract maxPost(): NamedNode;
+    /**
+     * @param {*} indexValue
+     * @param {string} name
+     * @return {!NamedNode}
+     */
+    abstract makePost(indexValue: unknown, name: string): NamedNode;
+    /**
+     * @return {!string} String representation for inclusion in a query spec
+     */
+    abstract toString(): string;
+}

node_modules/@firebase/database/dist/src/core/snap/indexes/KeyIndex.d.ts

@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Index } from './Index';
+import { Node, NamedNode } from '../Node';
+import { ChildrenNode } from '../ChildrenNode';
+export declare class KeyIndex extends Index {
+    static get __EMPTY_NODE(): ChildrenNode;
+    static set __EMPTY_NODE(val: ChildrenNode);
+    /**
+     * @inheritDoc
+     */
+    compare(a: NamedNode, b: NamedNode): number;
+    /**
+     * @inheritDoc
+     */
+    isDefinedOn(node: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    minPost(): any;
+    /**
+     * @inheritDoc
+     */
+    maxPost(): NamedNode;
+    /**
+     * @param {*} indexValue
+     * @param {string} name
+     * @return {!NamedNode}
+     */
+    makePost(indexValue: string, name: string): NamedNode;
+    /**
+     * @return {!string} String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const KEY_INDEX: KeyIndex;

node_modules/@firebase/database/dist/src/core/snap/indexes/PathIndex.d.ts

@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Index } from './Index';
+import { NamedNode, Node } from '../Node';
+import { Path } from '../../util/Path';
+/**
+ * @param {!Path} indexPath
+ * @constructor
+ * @extends {Index}
+ */
+export declare class PathIndex extends Index {
+    private indexPath_;
+    constructor(indexPath_: Path);
+    /**
+     * @param {!Node} snap
+     * @return {!Node}
+     * @protected
+     */
+    protected extractChild(snap: Node): Node;
+    /**
+     * @inheritDoc
+     */
+    isDefinedOn(node: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    compare(a: NamedNode, b: NamedNode): number;
+    /**
+     * @inheritDoc
+     */
+    makePost(indexValue: object, name: string): NamedNode;
+    /**
+     * @inheritDoc
+     */
+    maxPost(): NamedNode;
+    /**
+     * @inheritDoc
+     */
+    toString(): string;
+}

node_modules/@firebase/database/dist/src/core/snap/indexes/PriorityIndex.d.ts

@@ -0,0 +1,58 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Index } from './Index';
+import { NamedNode, Node } from '../Node';
+export declare function setNodeFromJSON(val: (a: unknown) => Node): void;
+export declare function setMaxNode(val: Node): void;
+/**
+ * @constructor
+ * @extends {Index}
+ * @private
+ */
+export declare class PriorityIndex extends Index {
+    /**
+     * @inheritDoc
+     */
+    compare(a: NamedNode, b: NamedNode): number;
+    /**
+     * @inheritDoc
+     */
+    isDefinedOn(node: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    minPost(): NamedNode;
+    /**
+     * @inheritDoc
+     */
+    maxPost(): NamedNode;
+    /**
+     * @param {*} indexValue
+     * @param {string} name
+     * @return {!NamedNode}
+     */
+    makePost(indexValue: unknown, name: string): NamedNode;
+    /**
+     * @return {!string} String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const PRIORITY_INDEX: PriorityIndex;

node_modules/@firebase/database/dist/src/core/snap/indexes/ValueIndex.d.ts

@@ -0,0 +1,56 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Index } from './Index';
+import { NamedNode, Node } from '../Node';
+/**
+ * @constructor
+ * @extends {Index}
+ * @private
+ */
+export declare class ValueIndex extends Index {
+    /**
+     * @inheritDoc
+     */
+    compare(a: NamedNode, b: NamedNode): number;
+    /**
+     * @inheritDoc
+     */
+    isDefinedOn(node: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    /**
+     * @inheritDoc
+     */
+    minPost(): NamedNode;
+    /**
+     * @inheritDoc
+     */
+    maxPost(): NamedNode;
+    /**
+     * @param {*} indexValue
+     * @param {string} name
+     * @return {!NamedNode}
+     */
+    makePost(indexValue: object, name: string): NamedNode;
+    /**
+     * @return {!string} String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const VALUE_INDEX: ValueIndex;

node_modules/@firebase/database/dist/src/core/snap/nodeFromJSON.d.ts

@@ -0,0 +1,25 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from './Node';
+/**
+ * Constructs a snapshot node representing the passed JSON and returns it.
+ * @param {*} json JSON to create a node for.
+ * @param {?string|?number=} priority Optional priority to use.  This will be ignored if the
+ * passed JSON contains a .priority property.
+ * @return {!Node}
+ */
+export declare function nodeFromJSON(json: unknown | null, priority?: unknown): Node;

node_modules/@firebase/database/dist/src/core/snap/snap.d.ts

@@ -0,0 +1,29 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from './Node';
+export declare function setMaxNode(val: Node): void;
+/**
+ * @param {(!string|!number)} priority
+ * @return {!string}
+ */
+export declare const priorityHashText: (priority: string | number) => string;
+/**
+ * Validates that a priority snapshot Node is valid.
+ *
+ * @param {!Node} priorityNode
+ */
+export declare const validatePriorityNode: (priorityNode: Node) => void;

node_modules/@firebase/database/dist/src/core/stats/StatsCollection.d.ts

@@ -0,0 +1,28 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * Tracks a collection of stats.
+ *
+ * @constructor
+ */
+export declare class StatsCollection {
+    private counters_;
+    incrementCounter(name: string, amount?: number): void;
+    get(): {
+        [k: string]: number;
+    };
+}

node_modules/@firebase/database/dist/src/core/stats/StatsListener.d.ts

@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { StatsCollection } from './StatsCollection';
+/**
+ * Returns the delta from the previous call to get stats.
+ *
+ * @param collection_ The collection to "listen" to.
+ * @constructor
+ */
+export declare class StatsListener {
+    private collection_;
+    private last_;
+    constructor(collection_: StatsCollection);
+    get(): {
+        [k: string]: number;
+    };
+}

node_modules/@firebase/database/dist/src/core/stats/StatsManager.d.ts

@@ -0,0 +1,24 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { StatsCollection } from './StatsCollection';
+import { RepoInfo } from '../RepoInfo';
+export declare class StatsManager {
+    private static collections_;
+    private static reporters_;
+    static getCollection(repoInfo: RepoInfo): StatsCollection;
+    static getOrCreateReporter<T>(repoInfo: RepoInfo, creatorFunction: () => T): T;
+}

node_modules/@firebase/database/dist/src/core/stats/StatsReporter.d.ts

@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { StatsCollection } from './StatsCollection';
+import { ServerActions } from '../ServerActions';
+/**
+ * @constructor
+ */
+export declare class StatsReporter {
+    private server_;
+    private statsListener_;
+    private statsToReport_;
+    /**
+     * @param collection
+     * @param server_
+     */
+    constructor(collection: StatsCollection, server_: ServerActions);
+    includeStat(stat: string): void;
+    private reportStats_;
+}

node_modules/@firebase/database/dist/src/core/storage/DOMStorageWrapper.d.ts

@@ -0,0 +1,55 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * Wraps a DOM Storage object and:
+ * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.
+ * - prefixes names with "firebase:" to avoid collisions with app data.
+ *
+ * We automatically (see storage.js) create two such wrappers, one for sessionStorage,
+ * and one for localStorage.
+ *
+ * @constructor
+ */
+export declare class DOMStorageWrapper {
+    private domStorage_;
+    private prefix_;
+    /**
+     * @param {Storage} domStorage_ The underlying storage object (e.g. localStorage or sessionStorage)
+     */
+    constructor(domStorage_: Storage);
+    /**
+     * @param {string} key The key to save the value under
+     * @param {?Object} value The value being stored, or null to remove the key.
+     */
+    set(key: string, value: unknown | null): void;
+    /**
+     * @param {string} key
+     * @return {*} The value that was stored under this key, or null
+     */
+    get(key: string): unknown;
+    /**
+     * @param {string} key
+     */
+    remove(key: string): void;
+    isInMemoryStorage: boolean;
+    /**
+     * @param {string} name
+     * @return {string}
+     */
+    prefixedName_(name: string): string;
+    toString(): string;
+}

node_modules/@firebase/database/dist/src/core/storage/MemoryStorage.d.ts

@@ -0,0 +1,29 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * An in-memory storage implementation that matches the API of DOMStorageWrapper
+ * (TODO: create interface for both to implement).
+ *
+ * @constructor
+ */
+export declare class MemoryStorage {
+    private cache_;
+    set(key: string, value: unknown | null): void;
+    get(key: string): unknown;
+    remove(key: string): void;
+    isInMemoryStorage: boolean;
+}

node_modules/@firebase/database/dist/src/core/storage/storage.d.ts

@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { DOMStorageWrapper } from './DOMStorageWrapper';
+import { MemoryStorage } from './MemoryStorage';
+/** A storage object that lasts across sessions */
+export declare const PersistentStorage: DOMStorageWrapper | MemoryStorage;
+/** A storage object that only lasts one session */
+export declare const SessionStorage: DOMStorageWrapper | MemoryStorage;

node_modules/@firebase/database/dist/src/core/util/EventEmitter.d.ts

@@ -0,0 +1,45 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * Base class to be used if you want to emit events. Call the constructor with
+ * the set of allowed event names.
+ */
+export declare abstract class EventEmitter {
+    private allowedEvents_;
+    private listeners_;
+    /**
+     * @param {!Array.<string>} allowedEvents_
+     */
+    constructor(allowedEvents_: string[]);
+    /**
+     * To be overridden by derived classes in order to fire an initial event when
+     * somebody subscribes for data.
+     *
+     * @param {!string} eventType
+     * @return {Array.<*>} Array of parameters to trigger initial event with.
+     */
+    abstract getInitialEvent(eventType: string): unknown[];
+    /**
+     * To be called by derived classes to trigger events.
+     * @param {!string} eventType
+     * @param {...*} varArgs
+     */
+    protected trigger(eventType: string, ...varArgs: unknown[]): void;
+    on(eventType: string, callback: (a: unknown) => void, context: unknown): void;
+    off(eventType: string, callback: (a: unknown) => void, context: unknown): void;
+    private validateEventType_;
+}

node_modules/@firebase/database/dist/src/core/util/ImmutableTree.d.ts

@@ -0,0 +1,157 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { SortedMap } from './SortedMap';
+import { Path } from './Path';
+/**
+ * A tree with immutable elements.
+ */
+export declare class ImmutableTree<T> {
+    readonly value: T | null;
+    readonly children: SortedMap<string, ImmutableTree<T>>;
+    static Empty: ImmutableTree<any>;
+    /**
+     * @template T
+     * @param {!Object.<string, !T>} obj
+     * @return {!ImmutableTree.<!T>}
+     */
+    static fromObject<T>(obj: {
+        [k: string]: T;
+    }): ImmutableTree<T>;
+    /**
+     * @template T
+     * @param {?T} value
+     * @param {SortedMap.<string, !ImmutableTree.<T>>=} children
+     */
+    constructor(value: T | null, children?: SortedMap<string, ImmutableTree<T>>);
+    /**
+     * True if the value is empty and there are no children
+     * @return {boolean}
+     */
+    isEmpty(): boolean;
+    /**
+     * Given a path and predicate, return the first node and the path to that node
+     * where the predicate returns true.
+     *
+     * TODO Do a perf test -- If we're creating a bunch of {path: value:} objects
+     * on the way back out, it may be better to pass down a pathSoFar obj.
+     *
+     * @param {!Path} relativePath The remainder of the path
+     * @param {function(T):boolean} predicate The predicate to satisfy to return a
+     *   node
+     * @return {?{path:!Path, value:!T}}
+     */
+    findRootMostMatchingPathAndValue(relativePath: Path, predicate: (a: T) => boolean): {
+        path: Path;
+        value: T;
+    } | null;
+    /**
+     * Find, if it exists, the shortest subpath of the given path that points a defined
+     * value in the tree
+     * @param {!Path} relativePath
+     * @return {?{path: !Path, value: !T}}
+     */
+    findRootMostValueAndPath(relativePath: Path): {
+        path: Path;
+        value: T;
+    } | null;
+    /**
+     * @param {!Path} relativePath
+     * @return {!ImmutableTree.<T>} The subtree at the given path
+     */
+    subtree(relativePath: Path): ImmutableTree<T>;
+    /**
+     * Sets a value at the specified path.
+     *
+     * @param {!Path} relativePath Path to set value at.
+     * @param {?T} toSet Value to set.
+     * @return {!ImmutableTree.<T>} Resulting tree.
+     */
+    set(relativePath: Path, toSet: T | null): ImmutableTree<T>;
+    /**
+     * Removes the value at the specified path.
+     *
+     * @param {!Path} relativePath Path to value to remove.
+     * @return {!ImmutableTree.<T>} Resulting tree.
+     */
+    remove(relativePath: Path): ImmutableTree<T>;
+    /**
+     * Gets a value from the tree.
+     *
+     * @param {!Path} relativePath Path to get value for.
+     * @return {?T} Value at path, or null.
+     */
+    get(relativePath: Path): T | null;
+    /**
+     * Replace the subtree at the specified path with the given new tree.
+     *
+     * @param {!Path} relativePath Path to replace subtree for.
+     * @param {!ImmutableTree} newTree New tree.
+     * @return {!ImmutableTree} Resulting tree.
+     */
+    setTree(relativePath: Path, newTree: ImmutableTree<T>): ImmutableTree<T>;
+    /**
+     * Performs a depth first fold on this tree. Transforms a tree into a single
+     * value, given a function that operates on the path to a node, an optional
+     * current value, and a map of child names to folded subtrees
+     * @template V
+     * @param {function(Path, ?T, Object.<string, V>):V} fn
+     * @return {V}
+     */
+    fold<V>(fn: (path: Path, value: T, children: {
+        [k: string]: V;
+    }) => V): V;
+    /**
+     * Recursive helper for public-facing fold() method
+     * @template V
+     * @param {!Path} pathSoFar
+     * @param {function(Path, ?T, Object.<string, V>):V} fn
+     * @return {V}
+     * @private
+     */
+    private fold_;
+    /**
+     * Find the first matching value on the given path. Return the result of applying f to it.
+     * @template V
+     * @param {!Path} path
+     * @param {!function(!Path, !T):?V} f
+     * @return {?V}
+     */
+    findOnPath<V>(path: Path, f: (path: Path, value: T) => V | null): V | null;
+    private findOnPath_;
+    /**
+     *
+     * @param {!Path} path
+     * @param {!function(!Path, !T)} f
+     * @returns {!ImmutableTree.<T>}
+     */
+    foreachOnPath(path: Path, f: (path: Path, value: T) => void): ImmutableTree<T>;
+    private foreachOnPath_;
+    /**
+     * Calls the given function for each node in the tree that has a value.
+     *
+     * @param {function(!Path, !T)} f A function to be called with
+     *   the path from the root of the tree to a node, and the value at that node.
+     *   Called in depth-first order.
+     */
+    foreach(f: (path: Path, value: T) => void): void;
+    private foreach_;
+    /**
+     *
+     * @param {function(string, !T)} f
+     */
+    foreachChild(f: (name: string, value: T) => void): void;
+}

node_modules/@firebase/database/dist/src/core/util/NextPushId.d.ts

@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * Fancy ID generator that creates 20-character string identifiers with the
+ * following properties:
+ *
+ * 1. They're based on timestamp so that they sort *after* any existing ids.
+ * 2. They contain 72-bits of random data after the timestamp so that IDs won't
+ *    collide with other clients' IDs.
+ * 3. They sort *lexicographically* (so the timestamp is converted to characters
+ *    that will sort properly).
+ * 4. They're monotonically increasing. Even if you generate more than one in
+ *    the same timestamp, the latter ones will sort after the former ones. We do
+ *    this by using the previous random bits but "incrementing" them by 1 (only
+ *    in the case of a timestamp collision).
+ */
+export declare const nextPushId: (now: number) => string;

node_modules/@firebase/database/dist/src/core/util/OnlineMonitor.d.ts

@@ -0,0 +1,40 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { EventEmitter } from './EventEmitter';
+/**
+ * Monitors online state (as reported by window.online/offline events).
+ *
+ * The expectation is that this could have many false positives (thinks we are online
+ * when we're not), but no false negatives.  So we can safely use it to determine when
+ * we definitely cannot reach the internet.
+ *
+ * @extends {EventEmitter}
+ */
+export declare class OnlineMonitor extends EventEmitter {
+    private online_;
+    static getInstance(): OnlineMonitor;
+    constructor();
+    /**
+     * @param {!string} eventType
+     * @return {Array.<boolean>}
+     */
+    getInitialEvent(eventType: string): boolean[];
+    /**
+     * @return {boolean}
+     */
+    currentlyOnline(): boolean;
+}

node_modules/@firebase/database/dist/src/core/util/Path.d.ts

@@ -0,0 +1,132 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * An immutable object representing a parsed path.  It's immutable so that you
+ * can pass them around to other functions without worrying about them changing
+ * it.
+ */
+export declare class Path {
+    private pieces_;
+    private pieceNum_;
+    /**
+     * Singleton to represent an empty path
+     *
+     * @const
+     */
+    static get Empty(): Path;
+    /**
+     * @param {string|Array.<string>} pathOrString Path string to parse,
+     *      or another path, or the raw tokens array
+     * @param {number=} pieceNum
+     */
+    constructor(pathOrString: string | string[], pieceNum?: number);
+    getFront(): string | null;
+    /**
+     * @return {number} The number of segments in this path
+     */
+    getLength(): number;
+    /**
+     * @return {!Path}
+     */
+    popFront(): Path;
+    /**
+     * @return {?string}
+     */
+    getBack(): string | null;
+    toString(): string;
+    toUrlEncodedString(): string;
+    /**
+     * Shallow copy of the parts of the path.
+     *
+     * @param {number=} begin
+     * @return {!Array<string>}
+     */
+    slice(begin?: number): string[];
+    /**
+     * @return {?Path}
+     */
+    parent(): Path | null;
+    /**
+     * @param {string|!Path} childPathObj
+     * @return {!Path}
+     */
+    child(childPathObj: string | Path): Path;
+    /**
+     * @return {boolean} True if there are no segments in this path
+     */
+    isEmpty(): boolean;
+    /**
+     * @param {!Path} outerPath
+     * @param {!Path} innerPath
+     * @return {!Path} The path from outerPath to innerPath
+     */
+    static relativePath(outerPath: Path, innerPath: Path): Path;
+    /**
+     * @param {!Path} left
+     * @param {!Path} right
+     * @return {number} -1, 0, 1 if left is less, equal, or greater than the right.
+     */
+    static comparePaths(left: Path, right: Path): number;
+    /**
+     *
+     * @param {Path} other
+     * @return {boolean} true if paths are the same.
+     */
+    equals(other: Path): boolean;
+    /**
+     *
+     * @param {!Path} other
+     * @return {boolean} True if this path is a parent (or the same as) other
+     */
+    contains(other: Path): boolean;
+}
+/**
+ * Dynamic (mutable) path used to count path lengths.
+ *
+ * This class is used to efficiently check paths for valid
+ * length (in UTF8 bytes) and depth (used in path validation).
+ *
+ * Throws Error exception if path is ever invalid.
+ *
+ * The definition of a path always begins with '/'.
+ */
+export declare class ValidationPath {
+    private errorPrefix_;
+    /** @type {!Array<string>} */
+    private parts_;
+    /** @type {number} Initialize to number of '/' chars needed in path. */
+    private byteLength_;
+    /**
+     * @param {!Path} path Initial Path.
+     * @param {string} errorPrefix_ Prefix for any error messages.
+     */
+    constructor(path: Path, errorPrefix_: string);
+    /** @const {number} Maximum key depth. */
+    static get MAX_PATH_DEPTH(): number;
+    /** @const {number} Maximum number of (UTF8) bytes in a Firebase path. */
+    static get MAX_PATH_LENGTH_BYTES(): number;
+    /** @param {string} child */
+    push(child: string): void;
+    pop(): void;
+    private checkValid_;
+    /**
+     * String for use in error messages - uses '.' notation for path.
+     *
+     * @return {string}
+     */
+    toErrorString(): string;
+}

node_modules/@firebase/database/dist/src/core/util/ServerValues.d.ts

@@ -0,0 +1,57 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { SparseSnapshotTree } from '../SparseSnapshotTree';
+import { Node } from '../snap/Node';
+/**
+ * Generate placeholders for deferred values.
+ * @param {?Object} values
+ * @return {!Object}
+ */
+export declare const generateWithValues: (values: {
+    [k: string]: unknown;
+}) => {
+    [k: string]: unknown;
+};
+/**
+ * Value to use when firing local events. When writing server values, fire
+ * local events with an approximate value, otherwise return value as-is.
+ * @param {(Object|string|number|boolean)} value
+ * @param {!Object} serverValues
+ * @return {!(string|number|boolean)}
+ */
+export declare const resolveDeferredValue: (value: string | number | boolean | {
+    [k: string]: any;
+}, serverValues: {
+    [k: string]: any;
+}) => string | number | boolean;
+/**
+ * Recursively replace all deferred values and priorities in the tree with the
+ * specified generated replacement values.
+ * @param {!SparseSnapshotTree} tree
+ * @param {!Object} serverValues
+ * @return {!SparseSnapshotTree}
+ */
+export declare const resolveDeferredValueTree: (tree: SparseSnapshotTree, serverValues: object) => SparseSnapshotTree;
+/**
+ * Recursively replace all deferred values and priorities in the node with the
+ * specified generated replacement values.  If there are no server values in the node,
+ * it'll be returned as-is.
+ * @param {!Node} node
+ * @param {!Object} serverValues
+ * @return {!Node}
+ */
+export declare const resolveDeferredValueSnapshot: (node: Node, serverValues: object) => Node;

node_modules/@firebase/database/dist/src/core/util/SortedMap.d.ts

@@ -0,0 +1,362 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @fileoverview Implementation of an immutable SortedMap using a Left-leaning
+ * Red-Black Tree, adapted from the implementation in Mugs
+ * (http://mads379.github.com/mugs/) by Mads Hartmann Jensen
+ * (mads379@gmail.com).
+ *
+ * Original paper on Left-leaning Red-Black Trees:
+ *   http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf
+ *
+ * Invariant 1: No red node has a red child
+ * Invariant 2: Every leaf path has the same number of black nodes
+ * Invariant 3: Only the left child can be red (left leaning)
+ */
+export declare type Comparator<K> = (key1: K, key2: K) => number;
+/**
+ * An iterator over an LLRBNode.
+ */
+export declare class SortedMapIterator<K, V, T> {
+    private isReverse_;
+    private resultGenerator_;
+    /** @private
+     * @type {Array.<!LLRBNode>}
+     */
+    private nodeStack_;
+    /**
+     * @template K, V, T
+     * @param {LLRBNode|LLRBEmptyNode} node Node to iterate.
+     * @param {?K} startKey
+     * @param {function(K, K): number} comparator
+     * @param {boolean} isReverse_ Whether or not to iterate in reverse
+     * @param {(function(K, V):T)=} resultGenerator_
+     */
+    constructor(node: LLRBNode<K, V> | LLRBEmptyNode<K, V>, startKey: K | null, comparator: Comparator<K>, isReverse_: boolean, resultGenerator_?: ((k: K, v: V) => T) | null);
+    getNext(): T;
+    hasNext(): boolean;
+    peek(): T;
+}
+/**
+ * Represents a node in a Left-leaning Red-Black tree.
+ */
+export declare class LLRBNode<K, V> {
+    key: K;
+    value: V;
+    color: boolean;
+    left: LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    right: LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    /**
+     * @template K, V
+     * @param {!K} key Key associated with this node.
+     * @param {!V} value Value associated with this node.
+     * @param {?boolean} color Whether this node is red.
+     * @param {?(LLRBNode|LLRBEmptyNode)=} left Left child.
+     * @param {?(LLRBNode|LLRBEmptyNode)=} right Right child.
+     */
+    constructor(key: K, value: V, color: boolean | null, left?: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null, right?: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null);
+    static RED: boolean;
+    static BLACK: boolean;
+    /**
+     * Returns a copy of the current node, optionally replacing pieces of it.
+     *
+     * @param {?K} key New key for the node, or null.
+     * @param {?V} value New value for the node, or null.
+     * @param {?boolean} color New color for the node, or null.
+     * @param {?LLRBNode|LLRBEmptyNode} left New left child for the node, or null.
+     * @param {?LLRBNode|LLRBEmptyNode} right New right child for the node, or null.
+     * @return {!LLRBNode} The node copy.
+     */
+    copy(key: K | null, value: V | null, color: boolean | null, left: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null, right: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null): LLRBNode<K, V>;
+    /**
+     * @return {number} The total number of nodes in the tree.
+     */
+    count(): number;
+    /**
+     * @return {boolean} True if the tree is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * Traverses the tree in key order and calls the specified action function
+     * for each node.
+     *
+     * @param {function(!K, !V):*} action Callback function to be called for each
+     *   node.  If it returns true, traversal is aborted.
+     * @return {*} The first truthy value returned by action, or the last falsey
+     *   value returned by action
+     */
+    inorderTraversal(action: (k: K, v: V) => unknown): boolean;
+    /**
+     * Traverses the tree in reverse key order and calls the specified action function
+     * for each node.
+     *
+     * @param {function(!Object, !Object)} action Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @return {*} True if traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    /**
+     * @return {!Object} The minimum node in the tree.
+     * @private
+     */
+    private min_;
+    /**
+     * @return {!K} The maximum key in the tree.
+     */
+    minKey(): K;
+    /**
+     * @return {!K} The maximum key in the tree.
+     */
+    maxKey(): K;
+    /**
+     *
+     * @param {!Object} key Key to insert.
+     * @param {!Object} value Value to insert.
+     * @param {Comparator} comparator Comparator.
+     * @return {!LLRBNode} New tree, with the key/value added.
+     */
+    insert(key: K, value: V, comparator: Comparator<K>): LLRBNode<K, V>;
+    /**
+     * @private
+     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the minimum key removed.
+     */
+    private removeMin_;
+    /**
+     * @param {!Object} key The key of the item to remove.
+     * @param {Comparator} comparator Comparator.
+     * @return {!LLRBNode|LLRBEmptyNode} New tree, with the specified item removed.
+     */
+    remove(key: K, comparator: Comparator<K>): LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    /**
+     * @private
+     * @return {boolean} Whether this is a RED node.
+     */
+    isRed_(): boolean;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree after performing any needed rotations.
+     */
+    private fixUp_;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree, after moveRedLeft.
+     */
+    private moveRedLeft_;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree, after moveRedRight.
+     */
+    private moveRedRight_;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree, after rotateLeft.
+     */
+    private rotateLeft_;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree, after rotateRight.
+     */
+    private rotateRight_;
+    /**
+     * @private
+     * @return {!LLRBNode} New tree, after colorFlip.
+     */
+    private colorFlip_;
+    /**
+     * For testing.
+     *
+     * @private
+     * @return {boolean} True if all is well.
+     */
+    private checkMaxDepth_;
+    /**
+     * @private
+     * @return {number} Not sure what this returns exactly. :-).
+     */
+    check_(): number;
+}
+/**
+ * Represents an empty node (a leaf node in the Red-Black Tree).
+ */
+export declare class LLRBEmptyNode<K, V> {
+    key: K;
+    value: V;
+    left: LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    right: LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    color: boolean;
+    /**
+     * Returns a copy of the current node.
+     *
+     * @return {!LLRBEmptyNode} The node copy.
+     */
+    copy(key: K | null, value: V | null, color: boolean | null, left: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null, right: LLRBNode<K, V> | LLRBEmptyNode<K, V> | null): LLRBEmptyNode<K, V>;
+    /**
+     * Returns a copy of the tree, with the specified key/value added.
+     *
+     * @param {!K} key Key to be added.
+     * @param {!V} value Value to be added.
+     * @param {Comparator} comparator Comparator.
+     * @return {!LLRBNode} New tree, with item added.
+     */
+    insert(key: K, value: V, comparator: Comparator<K>): LLRBNode<K, V>;
+    /**
+     * Returns a copy of the tree, with the specified key removed.
+     *
+     * @param {!K} key The key to remove.
+     * @param {Comparator} comparator Comparator.
+     * @return {!LLRBEmptyNode} New tree, with item removed.
+     */
+    remove(key: K, comparator: Comparator<K>): LLRBEmptyNode<K, V>;
+    /**
+     * @return {number} The total number of nodes in the tree.
+     */
+    count(): number;
+    /**
+     * @return {boolean} True if the tree is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * Traverses the tree in key order and calls the specified action function
+     * for each node.
+     *
+     * @param {function(!K, !V):*} action Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @return {boolean} True if traversal was aborted.
+     */
+    inorderTraversal(action: (k: K, v: V) => unknown): boolean;
+    /**
+     * Traverses the tree in reverse key order and calls the specified action function
+     * for each node.
+     *
+     * @param {function(!K, !V)} action Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @return {boolean} True if traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    /**
+     * @return {null}
+     */
+    minKey(): null;
+    /**
+     * @return {null}
+     */
+    maxKey(): null;
+    /**
+     * @private
+     * @return {number} Not sure what this returns exactly. :-).
+     */
+    check_(): number;
+    /**
+     * @private
+     * @return {boolean} Whether this node is red.
+     */
+    isRed_(): boolean;
+}
+/**
+ * An immutable sorted map implementation, based on a Left-leaning Red-Black
+ * tree.
+ */
+export declare class SortedMap<K, V> {
+    private comparator_;
+    private root_;
+    /**
+     * Always use the same empty node, to reduce memory.
+     * @const
+     */
+    static EMPTY_NODE: LLRBEmptyNode<unknown, unknown>;
+    /**
+     * @template K, V
+     * @param {function(K, K):number} comparator_ Key comparator.
+     * @param {LLRBNode=} root_ (Optional) Root node for the map.
+     */
+    constructor(comparator_: Comparator<K>, root_?: LLRBNode<K, V> | LLRBEmptyNode<K, V>);
+    /**
+     * Returns a copy of the map, with the specified key/value added or replaced.
+     * (TODO: We should perhaps rename this method to 'put')
+     *
+     * @param {!K} key Key to be added.
+     * @param {!V} value Value to be added.
+     * @return {!SortedMap.<K, V>} New map, with item added.
+     */
+    insert(key: K, value: V): SortedMap<K, V>;
+    /**
+     * Returns a copy of the map, with the specified key removed.
+     *
+     * @param {!K} key The key to remove.
+     * @return {!SortedMap.<K, V>} New map, with item removed.
+     */
+    remove(key: K): SortedMap<K, V>;
+    /**
+     * Returns the value of the node with the given key, or null.
+     *
+     * @param {!K} key The key to look up.
+     * @return {?V} The value of the node with the given key, or null if the
+     * key doesn't exist.
+     */
+    get(key: K): V | null;
+    /**
+     * Returns the key of the item *before* the specified key, or null if key is the first item.
+     * @param {K} key The key to find the predecessor of
+     * @return {?K} The predecessor key.
+     */
+    getPredecessorKey(key: K): K | null;
+    /**
+     * @return {boolean} True if the map is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * @return {number} The total number of nodes in the map.
+     */
+    count(): number;
+    /**
+     * @return {?K} The minimum key in the map.
+     */
+    minKey(): K | null;
+    /**
+     * @return {?K} The maximum key in the map.
+     */
+    maxKey(): K | null;
+    /**
+     * Traverses the map in key order and calls the specified action function
+     * for each key/value pair.
+     *
+     * @param {function(!K, !V):*} action Callback function to be called
+     * for each key/value pair.  If action returns true, traversal is aborted.
+     * @return {*} The first truthy value returned by action, or the last falsey
+     *   value returned by action
+     */
+    inorderTraversal(action: (k: K, v: V) => unknown): boolean;
+    /**
+     * Traverses the map in reverse key order and calls the specified action function
+     * for each key/value pair.
+     *
+     * @param {function(!Object, !Object)} action Callback function to be called
+     * for each key/value pair.  If action returns true, traversal is aborted.
+     * @return {*} True if the traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    /**
+     * Returns an iterator over the SortedMap.
+     * @template T
+     * @param {(function(K, V):T)=} resultGenerator
+     * @return {SortedMapIterator.<K, V, T>} The iterator.
+     */
+    getIterator<T>(resultGenerator?: (k: K, v: V) => T): SortedMapIterator<K, V, T>;
+    getIteratorFrom<T>(key: K, resultGenerator?: (k: K, v: V) => T): SortedMapIterator<K, V, T>;
+    getReverseIteratorFrom<T>(key: K, resultGenerator?: (k: K, v: V) => T): SortedMapIterator<K, V, T>;
+    getReverseIterator<T>(resultGenerator?: (k: K, v: V) => T): SortedMapIterator<K, V, T>;
+}

node_modules/@firebase/database/dist/src/core/util/Tree.d.ts

@@ -0,0 +1,134 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from './Path';
+/**
+ * Node in a Tree.
+ */
+export declare class TreeNode<T> {
+    children: {
+        [name: string]: TreeNode<T>;
+    };
+    childCount: number;
+    value: T | null;
+}
+/**
+ * A light-weight tree, traversable by path.  Nodes can have both values and children.
+ * Nodes are not enumerated (by forEachChild) unless they have a value or non-empty
+ * children.
+ */
+export declare class Tree<T> {
+    private name_;
+    private parent_;
+    private node_;
+    /**
+     * @template T
+     * @param {string=} name_ Optional name of the node.
+     * @param {Tree=} parent_ Optional parent node.
+     * @param {TreeNode=} node_ Optional node to wrap.
+     */
+    constructor(name_?: string, parent_?: Tree<T> | null, node_?: TreeNode<T>);
+    /**
+     * Returns a sub-Tree for the given path.
+     *
+     * @param {!(string|Path)} pathObj Path to look up.
+     * @return {!Tree.<T>} Tree for path.
+     */
+    subTree(pathObj: string | Path): Tree<T>;
+    /**
+     * Returns the data associated with this tree node.
+     *
+     * @return {?T} The data or null if no data exists.
+     */
+    getValue(): T | null;
+    /**
+     * Sets data to this tree node.
+     *
+     * @param {!T} value Value to set.
+     */
+    setValue(value: T): void;
+    /**
+     * Clears the contents of the tree node (its value and all children).
+     */
+    clear(): void;
+    /**
+     * @return {boolean} Whether the tree has any children.
+     */
+    hasChildren(): boolean;
+    /**
+     * @return {boolean} Whether the tree is empty (no value or children).
+     */
+    isEmpty(): boolean;
+    /**
+     * Calls action for each child of this tree node.
+     *
+     * @param {function(!Tree.<T>)} action Action to be called for each child.
+     */
+    forEachChild(action: (tree: Tree<T>) => void): void;
+    /**
+     * Does a depth-first traversal of this node's descendants, calling action for each one.
+     *
+     * @param {function(!Tree.<T>)} action Action to be called for each child.
+     * @param {boolean=} includeSelf Whether to call action on this node as well. Defaults to
+     *   false.
+     * @param {boolean=} childrenFirst Whether to call action on children before calling it on
+     *   parent.
+     */
+    forEachDescendant(action: (tree: Tree<T>) => void, includeSelf?: boolean, childrenFirst?: boolean): void;
+    /**
+     * Calls action on each ancestor node.
+     *
+     * @param {function(!Tree.<T>)} action Action to be called on each parent; return
+     *   true to abort.
+     * @param {boolean=} includeSelf Whether to call action on this node as well.
+     * @return {boolean} true if the action callback returned true.
+     */
+    forEachAncestor(action: (tree: Tree<T>) => unknown, includeSelf?: boolean): boolean;
+    /**
+     * Does a depth-first traversal of this node's descendants.  When a descendant with a value
+     * is found, action is called on it and traversal does not continue inside the node.
+     * Action is *not* called on this node.
+     *
+     * @param {function(!Tree.<T>)} action Action to be called for each child.
+     */
+    forEachImmediateDescendantWithValue(action: (tree: Tree<T>) => void): void;
+    /**
+     * @return {!Path} The path of this tree node, as a Path.
+     */
+    path(): Path;
+    /**
+     * @return {string} The name of the tree node.
+     */
+    name(): string;
+    /**
+     * @return {?Tree} The parent tree node, or null if this is the root of the tree.
+     */
+    parent(): Tree<T> | null;
+    /**
+     * Adds or removes this child from its parent based on whether it's empty or not.
+     *
+     * @private
+     */
+    private updateParents_;
+    /**
+     * Adds or removes the passed child to this tree node, depending on whether it's empty.
+     *
+     * @param {string} childName The name of the child to update.
+     * @param {!Tree.<T>} child The child to update.
+     * @private
+     */
+    private updateChild_;
+}

node_modules/@firebase/database/dist/src/core/util/VisibilityMonitor.d.ts

@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { EventEmitter } from './EventEmitter';
+/**
+ * @extends {EventEmitter}
+ */
+export declare class VisibilityMonitor extends EventEmitter {
+    private visible_;
+    static getInstance(): VisibilityMonitor;
+    constructor();
+    /**
+     * @param {!string} eventType
+     * @return {Array.<boolean>}
+     */
+    getInitialEvent(eventType: string): boolean[];
+}

node_modules/@firebase/database/dist/src/core/util/libs/parser.d.ts

@@ -0,0 +1,42 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../Path';
+import { RepoInfo } from '../../RepoInfo';
+/**
+ *
+ * @param {!string} dataURL
+ * @return {{repoInfo: !RepoInfo, path: !Path}}
+ */
+export declare const parseRepoInfo: (dataURL: string) => {
+    repoInfo: RepoInfo;
+    path: Path;
+};
+/**
+ *
+ * @param {!string} dataURL
+ * @return {{host: string, port: number, domain: string, subdomain: string, secure: boolean, scheme: string, pathString: string, namespace: string}}
+ */
+export declare const parseDatabaseURL: (dataURL: string) => {
+    host: string;
+    port: number;
+    domain: string;
+    subdomain: string;
+    secure: boolean;
+    scheme: string;
+    pathString: string;
+    namespace: string;
+};

node_modules/@firebase/database/dist/src/core/util/misc.d.ts

@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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.
+ */
+export interface Indexable {
+    [key: string]: unknown;
+}

node_modules/@firebase/database/dist/src/core/util/util.d.ts

@@ -0,0 +1,224 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Query } from '../../api/Query';
+/**
+ * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).
+ * @type {function(): number} Generated ID.
+ */
+export declare const LUIDGenerator: () => number;
+/**
+ * Sha1 hash of the input string
+ * @param {!string} str The string to hash
+ * @return {!string} The resulting hash
+ */
+export declare const sha1: (str: string) => string;
+/**
+ * Use this for all debug messages in Firebase.
+ * @type {?function(string)}
+ */
+export declare let logger: ((a: string) => void) | null;
+/**
+ * The implementation of Firebase.enableLogging (defined here to break dependencies)
+ * @param {boolean|?function(string)} logger_ A flag to turn on logging, or a custom logger
+ * @param {boolean=} persistent Whether or not to persist logging settings across refreshes
+ */
+export declare const enableLogging: (logger_?: boolean | ((a: string) => void), persistent?: boolean) => void;
+/**
+ *
+ * @param {...(string|Arguments)} varArgs
+ */
+export declare const log: (...varArgs: unknown[]) => void;
+/**
+ * @param {!string} prefix
+ * @return {function(...[*])}
+ */
+export declare const logWrapper: (prefix: string) => (...varArgs: unknown[]) => void;
+/**
+ * @param {...string} varArgs
+ */
+export declare const error: (...varArgs: string[]) => void;
+/**
+ * @param {...string} varArgs
+ */
+export declare const fatal: (...varArgs: string[]) => never;
+/**
+ * @param {...*} varArgs
+ */
+export declare const warn: (...varArgs: unknown[]) => void;
+/**
+ * Logs a warning if the containing page uses https. Called when a call to new Firebase
+ * does not use https.
+ */
+export declare const warnIfPageIsSecure: () => void;
+/**
+ * @param {!String} methodName
+ */
+export declare const warnAboutUnsupportedMethod: (methodName: string) => void;
+/**
+ * Returns true if data is NaN, or +/- Infinity.
+ * @param {*} data
+ * @return {boolean}
+ */
+export declare const isInvalidJSONNumber: (data: unknown) => boolean;
+/**
+ * @param {function()} fn
+ */
+export declare const executeWhenDOMReady: (fn: () => void) => void;
+/**
+ * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names
+ * @type {!string}
+ */
+export declare const MIN_NAME = "[MIN_NAME]";
+/**
+ * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names
+ * @type {!string}
+ */
+export declare const MAX_NAME = "[MAX_NAME]";
+/**
+ * Compares valid Firebase key names, plus min and max name
+ * @param {!string} a
+ * @param {!string} b
+ * @return {!number}
+ */
+export declare const nameCompare: (a: string, b: string) => number;
+/**
+ * @param {!string} a
+ * @param {!string} b
+ * @return {!number} comparison result.
+ */
+export declare const stringCompare: (a: string, b: string) => number;
+/**
+ * @param {string} key
+ * @param {Object} obj
+ * @return {*}
+ */
+export declare const requireKey: (key: string, obj: {
+    [k: string]: unknown;
+}) => unknown;
+/**
+ * @param {*} obj
+ * @return {string}
+ */
+export declare const ObjectToUniqueKey: (obj: unknown) => string;
+/**
+ * Splits a string into a number of smaller segments of maximum size
+ * @param {!string} str The string
+ * @param {!number} segsize The maximum number of chars in the string.
+ * @return {Array.<string>} The string, split into appropriately-sized chunks
+ */
+export declare const splitStringBySize: (str: string, segsize: number) => string[];
+/**
+ * Apply a function to each (key, value) pair in an object or
+ * apply a function to each (index, value) pair in an array
+ * @param obj The object or array to iterate over
+ * @param fn The function to apply
+ */
+export declare function each(obj: object, fn: (k: string, v: unknown) => void): void;
+/**
+ * Like goog.bind, but doesn't bother to create a closure if opt_context is null/undefined.
+ * @param {function(*)} callback Callback function.
+ * @param {?Object=} context Optional context to bind to.
+ * @return {function(*)}
+ */
+export declare const bindCallback: (callback: (a: unknown) => void, context?: object) => Function;
+/**
+ * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)
+ * I made one modification at the end and removed the NaN / Infinity
+ * handling (since it seemed broken [caused an overflow] and we don't need it).  See MJL comments.
+ * @param {!number} v A double
+ * @return {string}
+ */
+export declare const doubleToIEEE754String: (v: number) => string;
+/**
+ * Used to detect if we're in a Chrome content script (which executes in an
+ * isolated environment where long-polling doesn't work).
+ * @return {boolean}
+ */
+export declare const isChromeExtensionContentScript: () => boolean;
+/**
+ * Used to detect if we're in a Windows 8 Store app.
+ * @return {boolean}
+ */
+export declare const isWindowsStoreApp: () => boolean;
+/**
+ * Converts a server error code to a Javascript Error
+ * @param {!string} code
+ * @param {!Query} query
+ * @return {Error}
+ */
+export declare const errorForServerCode: (code: string, query: Query) => Error;
+/**
+ * Used to test for integer-looking strings
+ * @type {RegExp}
+ * @private
+ */
+export declare const INTEGER_REGEXP_: RegExp;
+/**
+ * If the string contains a 32-bit integer, return it.  Else return null.
+ * @param {!string} str
+ * @return {?number}
+ */
+export declare const tryParseInt: (str: string) => number;
+/**
+ * Helper to run some code but catch any exceptions and re-throw them later.
+ * Useful for preventing user callbacks from breaking internal code.
+ *
+ * Re-throwing the exception from a setTimeout is a little evil, but it's very
+ * convenient (we don't have to try to figure out when is a safe point to
+ * re-throw it), and the behavior seems reasonable:
+ *
+ * * If you aren't pausing on exceptions, you get an error in the console with
+ *   the correct stack trace.
+ * * If you're pausing on all exceptions, the debugger will pause on your
+ *   exception and then again when we rethrow it.
+ * * If you're only pausing on uncaught exceptions, the debugger will only pause
+ *   on us re-throwing it.
+ *
+ * @param {!function()} fn The code to guard.
+ */
+export declare const exceptionGuard: (fn: () => void) => void;
+/**
+ * Helper function to safely call opt_callback with the specified arguments.  It:
+ * 1. Turns into a no-op if opt_callback is null or undefined.
+ * 2. Wraps the call inside exceptionGuard to prevent exceptions from breaking our state.
+ *
+ * @param {?Function=} callback Optional onComplete callback.
+ * @param {...*} varArgs Arbitrary args to be passed to opt_onComplete
+ */
+export declare const callUserCallback: (callback?: Function, ...varArgs: unknown[]) => void;
+/**
+ * @return {boolean} true if we think we're currently being crawled.
+ */
+export declare const beingCrawled: () => boolean;
+/**
+ * Export a property of an object using a getter function.
+ *
+ * @param {!Object} object
+ * @param {string} name
+ * @param {!function(): *} fnGet
+ */
+export declare const exportPropGetter: (object: object, name: string, fnGet: () => unknown) => void;
+/**
+ * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.
+ *
+ * It is removed with clearTimeout() as normal.
+ *
+ * @param {Function} fn Function to run.
+ * @param {number} time Milliseconds to wait before running.
+ * @return {number|Object} The setTimeout() return value.
+ */
+export declare const setTimeoutNonBlocking: (fn: Function, time: number) => number | object;

node_modules/@firebase/database/dist/src/core/util/validation.d.ts

@@ -0,0 +1,108 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path, ValidationPath } from './Path';
+import { RepoInfo } from '../RepoInfo';
+/**
+ * True for invalid Firebase keys
+ * @type {RegExp}
+ * @private
+ */
+export declare const INVALID_KEY_REGEX_: RegExp;
+/**
+ * True for invalid Firebase paths.
+ * Allows '/' in paths.
+ * @type {RegExp}
+ * @private
+ */
+export declare const INVALID_PATH_REGEX_: RegExp;
+/**
+ * Maximum number of characters to allow in leaf value
+ * @type {number}
+ * @private
+ */
+export declare const MAX_LEAF_SIZE_: number;
+/**
+ * @param {*} key
+ * @return {boolean}
+ */
+export declare const isValidKey: (key: unknown) => boolean;
+/**
+ * @param {string} pathString
+ * @return {boolean}
+ */
+export declare const isValidPathString: (pathString: string) => boolean;
+/**
+ * @param {string} pathString
+ * @return {boolean}
+ */
+export declare const isValidRootPathString: (pathString: string) => boolean;
+/**
+ * @param {*} priority
+ * @return {boolean}
+ */
+export declare const isValidPriority: (priority: unknown) => boolean;
+/**
+ * Pre-validate a datum passed as an argument to Firebase function.
+ *
+ * @param {string} fnName
+ * @param {number} argumentNumber
+ * @param {*} data
+ * @param {!Path} path
+ * @param {boolean} optional
+ */
+export declare const validateFirebaseDataArg: (fnName: string, argumentNumber: number, data: unknown, path: Path, optional: boolean) => void;
+/**
+ * Validate a data object client-side before sending to server.
+ *
+ * @param {string} errorPrefix
+ * @param {*} data
+ * @param {!Path|!ValidationPath} path_
+ */
+export declare const validateFirebaseData: (errorPrefix: string, data: unknown, path_: Path | ValidationPath) => void;
+/**
+ * Pre-validate paths passed in the firebase function.
+ *
+ * @param {string} errorPrefix
+ * @param {Array<!Path>} mergePaths
+ */
+export declare const validateFirebaseMergePaths: (errorPrefix: string, mergePaths: Path[]) => void;
+/**
+ * pre-validate an object passed as an argument to firebase function (
+ * must be an object - e.g. for firebase.update()).
+ *
+ * @param {string} fnName
+ * @param {number} argumentNumber
+ * @param {*} data
+ * @param {!Path} path
+ * @param {boolean} optional
+ */
+export declare const validateFirebaseMergeDataArg: (fnName: string, argumentNumber: number, data: unknown, path: Path, optional: boolean) => void;
+export declare const validatePriority: (fnName: string, argumentNumber: number, priority: unknown, optional: boolean) => void;
+export declare const validateEventType: (fnName: string, argumentNumber: number, eventType: string, optional: boolean) => void;
+export declare const validateKey: (fnName: string, argumentNumber: number, key: string, optional: boolean) => void;
+export declare const validatePathString: (fnName: string, argumentNumber: number, pathString: string, optional: boolean) => void;
+export declare const validateRootPathString: (fnName: string, argumentNumber: number, pathString: string, optional: boolean) => void;
+export declare const validateWritablePath: (fnName: string, path: Path) => void;
+export declare const validateUrl: (fnName: string, argumentNumber: number, parsedUrl: {
+    repoInfo: RepoInfo;
+    path: Path;
+}) => void;
+export declare const validateCredential: (fnName: string, argumentNumber: number, cred: unknown, optional: boolean) => void;
+export declare const validateBoolean: (fnName: string, argumentNumber: number, bool: unknown, optional: boolean) => void;
+export declare const validateString: (fnName: string, argumentNumber: number, string: unknown, optional: boolean) => void;
+export declare const validateObject: (fnName: string, argumentNumber: number, obj: unknown, optional: boolean) => void;
+export declare const validateObjectContainsKey: (fnName: string, argumentNumber: number, obj: unknown, key: string, optional: boolean, optType?: string) => void;

node_modules/@firebase/database/dist/src/core/version.d.ts

@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2019 Google Inc.
+ *
+ * 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. */
+export declare let SDK_VERSION: string;
+export declare function setSDKVersion(version: string): void;

node_modules/@firebase/database/dist/src/core/view/CacheNode.d.ts

@@ -0,0 +1,59 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../snap/Node';
+import { Path } from '../util/Path';
+/**
+ * A cache node only stores complete children. Additionally it holds a flag whether the node can be considered fully
+ * initialized in the sense that we know at one point in time this represented a valid state of the world, e.g.
+ * initialized with data from the server, or a complete overwrite by the client. The filtered flag also tracks
+ * whether a node potentially had children removed due to a filter.
+ */
+export declare class CacheNode {
+    private node_;
+    private fullyInitialized_;
+    private filtered_;
+    /**
+     * @param {!Node} node_
+     * @param {boolean} fullyInitialized_
+     * @param {boolean} filtered_
+     */
+    constructor(node_: Node, fullyInitialized_: boolean, filtered_: boolean);
+    /**
+     * Returns whether this node was fully initialized with either server data or a complete overwrite by the client
+     * @return {boolean}
+     */
+    isFullyInitialized(): boolean;
+    /**
+     * Returns whether this node is potentially missing children due to a filter applied to the node
+     * @return {boolean}
+     */
+    isFiltered(): boolean;
+    /**
+     * @param {!Path} path
+     * @return {boolean}
+     */
+    isCompleteForPath(path: Path): boolean;
+    /**
+     * @param {!string} key
+     * @return {boolean}
+     */
+    isCompleteForChild(key: string): boolean;
+    /**
+     * @return {!Node}
+     */
+    getNode(): Node;
+}

node_modules/@firebase/database/dist/src/core/view/Change.d.ts

@@ -0,0 +1,74 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../snap/Node';
+/**
+ * @constructor
+ * @struct
+ * @param {!string} type The event type
+ * @param {!Node} snapshotNode The data
+ * @param {string=} childName The name for this child, if it's a child event
+ * @param {Node=} oldSnap Used for intermediate processing of child changed events
+ * @param {string=} prevName The name for the previous child, if applicable
+ */
+export declare class Change {
+    type: string;
+    snapshotNode: Node;
+    childName?: string;
+    oldSnap?: Node;
+    prevName?: string | null;
+    constructor(type: string, snapshotNode: Node, childName?: string, oldSnap?: Node, prevName?: string | null);
+    /**
+     * @param {!Node} snapshot
+     * @return {!Change}
+     */
+    static valueChange(snapshot: Node): Change;
+    /**
+     * @param {string} childKey
+     * @param {!Node} snapshot
+     * @return {!Change}
+     */
+    static childAddedChange(childKey: string, snapshot: Node): Change;
+    /**
+     * @param {string} childKey
+     * @param {!Node} snapshot
+     * @return {!Change}
+     */
+    static childRemovedChange(childKey: string, snapshot: Node): Change;
+    /**
+     * @param {string} childKey
+     * @param {!Node} newSnapshot
+     * @param {!Node} oldSnapshot
+     * @return {!Change}
+     */
+    static childChangedChange(childKey: string, newSnapshot: Node, oldSnapshot: Node): Change;
+    /**
+     * @param {string} childKey
+     * @param {!Node} snapshot
+     * @return {!Change}
+     */
+    static childMovedChange(childKey: string, snapshot: Node): Change;
+    /** Event type for a child added */
+    static CHILD_ADDED: string;
+    /** Event type for a child removed */
+    static CHILD_REMOVED: string;
+    /** Event type for a child changed */
+    static CHILD_CHANGED: string;
+    /** Event type for a child moved */
+    static CHILD_MOVED: string;
+    /** Event type for a value change */
+    static VALUE: string;
+}

node_modules/@firebase/database/dist/src/core/view/ChildChangeAccumulator.d.ts

@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Change } from './Change';
+export declare class ChildChangeAccumulator {
+    private readonly changeMap;
+    trackChildChange(change: Change): void;
+    getChanges(): Change[];
+}

node_modules/@firebase/database/dist/src/core/view/CompleteChildSource.d.ts

@@ -0,0 +1,91 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { NamedNode, Node } from '../snap/Node';
+import { Index } from '../snap/indexes/Index';
+import { WriteTreeRef } from '../WriteTree';
+import { ViewCache } from './ViewCache';
+/**
+ * Since updates to filtered nodes might require nodes to be pulled in from "outside" the node, this interface
+ * can help to get complete children that can be pulled in.
+ * A class implementing this interface takes potentially multiple sources (e.g. user writes, server data from
+ * other views etc.) to try it's best to get a complete child that might be useful in pulling into the view.
+ *
+ * @interface
+ */
+export interface CompleteChildSource {
+    /**
+     * @param {!string} childKey
+     * @return {?Node}
+     */
+    getCompleteChild(childKey: string): Node | null;
+    /**
+     * @param {!Index} index
+     * @param {!NamedNode} child
+     * @param {boolean} reverse
+     * @return {?NamedNode}
+     */
+    getChildAfterChild(index: Index, child: NamedNode, reverse: boolean): NamedNode | null;
+}
+/**
+ * An implementation of CompleteChildSource that never returns any additional children
+ *
+ * @private
+ * @constructor
+ * @implements CompleteChildSource
+ */
+export declare class NoCompleteChildSource_ implements CompleteChildSource {
+    /**
+     * @inheritDoc
+     */
+    getCompleteChild(childKey?: string): Node | null;
+    /**
+     * @inheritDoc
+     */
+    getChildAfterChild(index?: Index, child?: NamedNode, reverse?: boolean): NamedNode | null;
+}
+/**
+ * Singleton instance.
+ * @const
+ * @type {!CompleteChildSource}
+ */
+export declare const NO_COMPLETE_CHILD_SOURCE: NoCompleteChildSource_;
+/**
+ * An implementation of CompleteChildSource that uses a WriteTree in addition to any other server data or
+ * old event caches available to calculate complete children.
+ *
+ *
+ * @implements CompleteChildSource
+ */
+export declare class WriteTreeCompleteChildSource implements CompleteChildSource {
+    private writes_;
+    private viewCache_;
+    private optCompleteServerCache_;
+    /**
+     * @param {!WriteTreeRef} writes_
+     * @param {!ViewCache} viewCache_
+     * @param {?Node} optCompleteServerCache_
+     */
+    constructor(writes_: WriteTreeRef, viewCache_: ViewCache, optCompleteServerCache_?: Node | null);
+    /**
+     * @inheritDoc
+     */
+    getCompleteChild(childKey: string): Node | null;
+    /**
+     * @inheritDoc
+     */
+    getChildAfterChild(index: Index, child: NamedNode, reverse: boolean): NamedNode | null;
+}

node_modules/@firebase/database/dist/src/core/view/Event.d.ts

@@ -0,0 +1,102 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+import { EventRegistration } from './EventRegistration';
+import { DataSnapshot } from '../../api/DataSnapshot';
+/**
+ * Encapsulates the data needed to raise an event
+ * @interface
+ */
+export interface Event {
+    /**
+     * @return {!Path}
+     */
+    getPath(): Path;
+    /**
+     * @return {!string}
+     */
+    getEventType(): string;
+    /**
+     * @return {!function()}
+     */
+    getEventRunner(): () => void;
+    /**
+     * @return {!string}
+     */
+    toString(): string;
+}
+export declare type EventType = 'value' | ' child_added' | ' child_changed' | ' child_moved' | ' child_removed';
+/**
+ * Encapsulates the data needed to raise an event
+ * @implements {Event}
+ */
+export declare class DataEvent implements Event {
+    eventType: EventType;
+    eventRegistration: EventRegistration;
+    snapshot: DataSnapshot;
+    prevName?: string | null;
+    /**
+     * @param {!string} eventType One of: value, child_added, child_changed, child_moved, child_removed
+     * @param {!EventRegistration} eventRegistration The function to call to with the event data. User provided
+     * @param {!DataSnapshot} snapshot The data backing the event
+     * @param {?string=} prevName Optional, the name of the previous child for child_* events.
+     */
+    constructor(eventType: EventType, eventRegistration: EventRegistration, snapshot: DataSnapshot, prevName?: string | null);
+    /**
+     * @inheritDoc
+     */
+    getPath(): Path;
+    /**
+     * @inheritDoc
+     */
+    getEventType(): string;
+    /**
+     * @inheritDoc
+     */
+    getEventRunner(): () => void;
+    /**
+     * @inheritDoc
+     */
+    toString(): string;
+}
+export declare class CancelEvent implements Event {
+    eventRegistration: EventRegistration;
+    error: Error;
+    path: Path;
+    /**
+     * @param {EventRegistration} eventRegistration
+     * @param {Error} error
+     * @param {!Path} path
+     */
+    constructor(eventRegistration: EventRegistration, error: Error, path: Path);
+    /**
+     * @inheritDoc
+     */
+    getPath(): Path;
+    /**
+     * @inheritDoc
+     */
+    getEventType(): string;
+    /**
+     * @inheritDoc
+     */
+    getEventRunner(): () => void;
+    /**
+     * @inheritDoc
+     */
+    toString(): string;
+}

node_modules/@firebase/database/dist/src/core/view/EventGenerator.d.ts

@@ -0,0 +1,77 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../snap/Node';
+import { Change } from './Change';
+import { Query } from '../../api/Query';
+import { EventRegistration } from './EventRegistration';
+import { Event } from './Event';
+/**
+ * An EventGenerator is used to convert "raw" changes (Change) as computed by the
+ * CacheDiffer into actual events (Event) that can be raised.  See generateEventsForChanges()
+ * for details.
+ *
+ * @constructor
+ */
+export declare class EventGenerator {
+    private query_;
+    private index_;
+    /**
+     *
+     * @param {!Query} query_
+     */
+    constructor(query_: Query);
+    /**
+     * Given a set of raw changes (no moved events and prevName not specified yet), and a set of
+     * EventRegistrations that should be notified of these changes, generate the actual events to be raised.
+     *
+     * Notes:
+     *  - child_moved events will be synthesized at this time for any child_changed events that affect
+     *    our index.
+     *  - prevName will be calculated based on the index ordering.
+     *
+     * @param {!Array.<!Change>} changes
+     * @param {!Node} eventCache
+     * @param {!Array.<!EventRegistration>} eventRegistrations
+     * @return {!Array.<!Event>}
+     */
+    generateEventsForChanges(changes: Change[], eventCache: Node, eventRegistrations: EventRegistration[]): Event[];
+    /**
+     * Given changes of a single change type, generate the corresponding events.
+     *
+     * @param {!Array.<!Event>} events
+     * @param {!string} eventType
+     * @param {!Array.<!Change>} changes
+     * @param {!Array.<!EventRegistration>} registrations
+     * @param {!Node} eventCache
+     * @private
+     */
+    private generateEventsForType_;
+    /**
+     * @param {!Change} change
+     * @param {!Node} eventCache
+     * @return {!Change}
+     * @private
+     */
+    private materializeSingleChange_;
+    /**
+     * @param {!Change} a
+     * @param {!Change} b
+     * @return {number}
+     * @private
+     */
+    private compareChanges_;
+}

node_modules/@firebase/database/dist/src/core/view/EventQueue.d.ts

@@ -0,0 +1,99 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Path } from '../util/Path';
+import { Event } from './Event';
+/**
+ * The event queue serves a few purposes:
+ * 1. It ensures we maintain event order in the face of event callbacks doing operations that result in more
+ *    events being queued.
+ * 2. raiseQueuedEvents() handles being called reentrantly nicely.  That is, if in the course of raising events,
+ *    raiseQueuedEvents() is called again, the "inner" call will pick up raising events where the "outer" call
+ *    left off, ensuring that the events are still raised synchronously and in order.
+ * 3. You can use raiseEventsAtPath and raiseEventsForChangedPath to ensure only relevant previously-queued
+ *    events are raised synchronously.
+ *
+ * NOTE: This can all go away if/when we move to async events.
+ *
+ * @constructor
+ */
+export declare class EventQueue {
+    /**
+     * @private
+     * @type {!Array.<EventList>}
+     */
+    private eventLists_;
+    /**
+     * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.
+     * @private
+     * @type {!number}
+     */
+    private recursionDepth_;
+    /**
+     * @param {!Array.<Event>} eventDataList The new events to queue.
+     */
+    queueEvents(eventDataList: Event[]): void;
+    /**
+     * Queues the specified events and synchronously raises all events (including previously queued ones)
+     * for the specified path.
+     *
+     * It is assumed that the new events are all for the specified path.
+     *
+     * @param {!Path} path The path to raise events for.
+     * @param {!Array.<Event>} eventDataList The new events to raise.
+     */
+    raiseEventsAtPath(path: Path, eventDataList: Event[]): void;
+    /**
+     * Queues the specified events and synchronously raises all events (including previously queued ones) for
+     * locations related to the specified change path (i.e. all ancestors and descendants).
+     *
+     * It is assumed that the new events are all related (ancestor or descendant) to the specified path.
+     *
+     * @param {!Path} changedPath The path to raise events for.
+     * @param {!Array.<!Event>} eventDataList The events to raise
+     */
+    raiseEventsForChangedPath(changedPath: Path, eventDataList: Event[]): void;
+    /**
+     * @param {!function(!Path):boolean} predicate
+     * @private
+     */
+    private raiseQueuedEventsMatchingPredicate_;
+}
+/**
+ * @param {!Path} path
+ * @constructor
+ */
+export declare class EventList {
+    private readonly path_;
+    /**
+     * @type {!Array.<Event>}
+     * @private
+     */
+    private events_;
+    constructor(path_: Path);
+    /**
+     * @param {!Event} eventData
+     */
+    add(eventData: Event): void;
+    /**
+     * Iterates through the list and raises each event
+     */
+    raise(): void;
+    /**
+     * @return {!Path}
+     */
+    getPath(): Path;
+}

node_modules/@firebase/database/dist/src/core/view/EventRegistration.d.ts

@@ -0,0 +1,154 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { DataSnapshot } from '../../api/DataSnapshot';
+import { DataEvent, CancelEvent, Event } from './Event';
+import { Path } from '../util/Path';
+import { Change } from './Change';
+import { Query } from '../../api/Query';
+/**
+ * An EventRegistration is basically an event type ('value', 'child_added', etc.) and a callback
+ * to be notified of that type of event.
+ *
+ * That said, it can also contain a cancel callback to be notified if the event is canceled.  And
+ * currently, this code is organized around the idea that you would register multiple child_ callbacks
+ * together, as a single EventRegistration.  Though currently we don't do that.
+ */
+export interface EventRegistration {
+    /**
+     * True if this container has a callback to trigger for this event type
+     * @param {!string} eventType
+     * @return {boolean}
+     */
+    respondsTo(eventType: string): boolean;
+    /**
+     * @param {!Change} change
+     * @param {!Query} query
+     * @return {!Event}
+     */
+    createEvent(change: Change, query: Query): Event;
+    /**
+     * Given event data, return a function to trigger the user's callback
+     * @param {!Event} eventData
+     * @return {function()}
+     */
+    getEventRunner(eventData: Event): () => void;
+    /**
+     * @param {!Error} error
+     * @param {!Path} path
+     * @return {?CancelEvent}
+     */
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    /**
+     * @param {!EventRegistration} other
+     * @return {boolean}
+     */
+    matches(other: EventRegistration): boolean;
+    /**
+     * False basically means this is a "dummy" callback container being used as a sentinel
+     * to remove all callback containers of a particular type.  (e.g. if the user does
+     * ref.off('value') without specifying a specific callback).
+     *
+     * (TODO: Rework this, since it's hacky)
+     *
+     * @return {boolean}
+     */
+    hasAnyCallback(): boolean;
+}
+/**
+ * Represents registration for 'value' events.
+ */
+export declare class ValueEventRegistration implements EventRegistration {
+    private callback_;
+    private cancelCallback_;
+    private context_;
+    /**
+     * @param {?function(!DataSnapshot)} callback_
+     * @param {?function(Error)} cancelCallback_
+     * @param {?Object} context_
+     */
+    constructor(callback_: ((d: DataSnapshot) => void) | null, cancelCallback_: ((e: Error) => void) | null, context_: {} | null);
+    /**
+     * @inheritDoc
+     */
+    respondsTo(eventType: string): boolean;
+    /**
+     * @inheritDoc
+     */
+    createEvent(change: Change, query: Query): DataEvent;
+    /**
+     * @inheritDoc
+     */
+    getEventRunner(eventData: CancelEvent | DataEvent): () => void;
+    /**
+     * @inheritDoc
+     */
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    /**
+     * @inheritDoc
+     */
+    matches(other: EventRegistration): boolean;
+    /**
+     * @inheritDoc
+     */
+    hasAnyCallback(): boolean;
+}
+/**
+ * Represents the registration of 1 or more child_xxx events.
+ *
+ * Currently, it is always exactly 1 child_xxx event, but the idea is we might let you
+ * register a group of callbacks together in the future.
+ *
+ * @constructor
+ * @implements {EventRegistration}
+ */
+export declare class ChildEventRegistration implements EventRegistration {
+    private callbacks_;
+    private cancelCallback_;
+    private context_?;
+    /**
+     * @param {?Object.<string, function(!DataSnapshot, ?string=)>} callbacks_
+     * @param {?function(Error)} cancelCallback_
+     * @param {Object=} context_
+     */
+    constructor(callbacks_: {
+        [k: string]: (d: DataSnapshot, s?: string | null) => void;
+    } | null, cancelCallback_: ((e: Error) => void) | null, context_?: {});
+    /**
+     * @inheritDoc
+     */
+    respondsTo(eventType: string): boolean;
+    /**
+     * @inheritDoc
+     */
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    /**
+     * @inheritDoc
+     */
+    createEvent(change: Change, query: Query): DataEvent;
+    /**
+     * @inheritDoc
+     */
+    getEventRunner(eventData: CancelEvent | DataEvent): () => void;
+    /**
+     * @inheritDoc
+     */
+    matches(other: EventRegistration): boolean;
+    /**
+     * @inheritDoc
+     */
+    hasAnyCallback(): boolean;
+}

node_modules/@firebase/database/dist/src/core/view/QueryParams.d.ts

@@ -0,0 +1,170 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { NodeFilter } from './filter/NodeFilter';
+import { Index } from '../snap/indexes/Index';
+/**
+ * This class is an immutable-from-the-public-api struct containing a set of query parameters defining a
+ * range to be returned for a particular location. It is assumed that validation of parameters is done at the
+ * user-facing API level, so it is not done here.
+ * @constructor
+ */
+export declare class QueryParams {
+    private limitSet_;
+    private startSet_;
+    private startNameSet_;
+    private endSet_;
+    private endNameSet_;
+    private limit_;
+    private viewFrom_;
+    private indexStartValue_;
+    private indexStartName_;
+    private indexEndValue_;
+    private indexEndName_;
+    private index_;
+    /**
+     * Wire Protocol Constants
+     * @const
+     * @enum {string}
+     * @private
+     */
+    private static readonly WIRE_PROTOCOL_CONSTANTS_;
+    /**
+     * REST Query Constants
+     * @const
+     * @enum {string}
+     * @private
+     */
+    private static readonly REST_QUERY_CONSTANTS_;
+    /**
+     * Default, empty query parameters
+     * @type {!QueryParams}
+     * @const
+     */
+    static readonly DEFAULT: QueryParams;
+    /**
+     * @return {boolean}
+     */
+    hasStart(): boolean;
+    /**
+     * @return {boolean} True if it would return from left.
+     */
+    isViewFromLeft(): boolean;
+    /**
+     * Only valid to call if hasStart() returns true
+     * @return {*}
+     */
+    getIndexStartValue(): unknown;
+    /**
+     * Only valid to call if hasStart() returns true.
+     * Returns the starting key name for the range defined by these query parameters
+     * @return {!string}
+     */
+    getIndexStartName(): string;
+    /**
+     * @return {boolean}
+     */
+    hasEnd(): boolean;
+    /**
+     * Only valid to call if hasEnd() returns true.
+     * @return {*}
+     */
+    getIndexEndValue(): unknown;
+    /**
+     * Only valid to call if hasEnd() returns true.
+     * Returns the end key name for the range defined by these query parameters
+     * @return {!string}
+     */
+    getIndexEndName(): string;
+    /**
+     * @return {boolean}
+     */
+    hasLimit(): boolean;
+    /**
+     * @return {boolean} True if a limit has been set and it has been explicitly anchored
+     */
+    hasAnchoredLimit(): boolean;
+    /**
+     * Only valid to call if hasLimit() returns true
+     * @return {!number}
+     */
+    getLimit(): number;
+    /**
+     * @return {!Index}
+     */
+    getIndex(): Index;
+    /**
+     * @return {!QueryParams}
+     * @private
+     */
+    private copy_;
+    /**
+     * @param {!number} newLimit
+     * @return {!QueryParams}
+     */
+    limit(newLimit: number): QueryParams;
+    /**
+     * @param {!number} newLimit
+     * @return {!QueryParams}
+     */
+    limitToFirst(newLimit: number): QueryParams;
+    /**
+     * @param {!number} newLimit
+     * @return {!QueryParams}
+     */
+    limitToLast(newLimit: number): QueryParams;
+    /**
+     * @param {*} indexValue
+     * @param {?string=} key
+     * @return {!QueryParams}
+     */
+    startAt(indexValue: unknown, key?: string | null): QueryParams;
+    /**
+     * @param {*} indexValue
+     * @param {?string=} key
+     * @return {!QueryParams}
+     */
+    endAt(indexValue: unknown, key?: string | null): QueryParams;
+    /**
+     * @param {!Index} index
+     * @return {!QueryParams}
+     */
+    orderBy(index: Index): QueryParams;
+    /**
+     * @return {!Object}
+     */
+    getQueryObject(): {};
+    /**
+     * @return {boolean}
+     */
+    loadsAllData(): boolean;
+    /**
+     * @return {boolean}
+     */
+    isDefault(): boolean;
+    /**
+     * @return {!NodeFilter}
+     */
+    getNodeFilter(): NodeFilter;
+    /**
+     * Returns a set of REST query string parameters representing this query.
+     *
+     * @return {!Object.<string,*>} query string parameters
+     */
+    toRestQueryStringParameters(): {
+        [k: string]: string | number;
+    };
+}

node_modules/@firebase/database/dist/src/core/view/View.d.ts

@@ -0,0 +1,97 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { ViewCache } from './ViewCache';
+import { Operation } from '../operation/Operation';
+import { Change } from './Change';
+import { Query } from '../../api/Query';
+import { EventRegistration } from './EventRegistration';
+import { Node } from '../snap/Node';
+import { Path } from '../util/Path';
+import { WriteTreeRef } from '../WriteTree';
+import { Event } from './Event';
+/**
+ * A view represents a specific location and query that has 1 or more event registrations.
+ *
+ * It does several things:
+ *  - Maintains the list of event registrations for this location/query.
+ *  - Maintains a cache of the data visible for this location/query.
+ *  - Applies new operations (via applyOperation), updates the cache, and based on the event
+ *    registrations returns the set of events to be raised.
+ * @constructor
+ */
+export declare class View {
+    private query_;
+    private processor_;
+    private viewCache_;
+    private eventRegistrations_;
+    private eventGenerator_;
+    /**
+     *
+     * @param {!Query} query_
+     * @param {!ViewCache} initialViewCache
+     */
+    constructor(query_: Query, initialViewCache: ViewCache);
+    /**
+     * @return {!Query}
+     */
+    getQuery(): Query;
+    /**
+     * @return {?Node}
+     */
+    getServerCache(): Node | null;
+    /**
+     * @param {!Path} path
+     * @return {?Node}
+     */
+    getCompleteServerCache(path: Path): Node | null;
+    /**
+     * @return {boolean}
+     */
+    isEmpty(): boolean;
+    /**
+     * @param {!EventRegistration} eventRegistration
+     */
+    addEventRegistration(eventRegistration: EventRegistration): void;
+    /**
+     * @param {?EventRegistration} eventRegistration If null, remove all callbacks.
+     * @param {Error=} cancelError If a cancelError is provided, appropriate cancel events will be returned.
+     * @return {!Array.<!Event>} Cancel events, if cancelError was provided.
+     */
+    removeEventRegistration(eventRegistration: EventRegistration | null, cancelError?: Error): Event[];
+    /**
+     * Applies the given Operation, updates our cache, and returns the appropriate events.
+     *
+     * @param {!Operation} operation
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeServerCache
+     * @return {!Array.<!Event>}
+     */
+    applyOperation(operation: Operation, writesCache: WriteTreeRef, completeServerCache: Node | null): Event[];
+    /**
+     * @param {!EventRegistration} registration
+     * @return {!Array.<!Event>}
+     */
+    getInitialEvents(registration: EventRegistration): Event[];
+    /**
+     * @private
+     * @param {!Array.<!Change>} changes
+     * @param {!Node} eventCache
+     * @param {EventRegistration=} eventRegistration
+     * @return {!Array.<!Event>}
+     */
+    generateEventsForChanges_(changes: Change[], eventCache: Node, eventRegistration?: EventRegistration): Event[];
+}

node_modules/@firebase/database/dist/src/core/view/ViewCache.d.ts

@@ -0,0 +1,70 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { CacheNode } from './CacheNode';
+import { Node } from '../snap/Node';
+/**
+ * Stores the data we have cached for a view.
+ *
+ * serverSnap is the cached server data, eventSnap is the cached event data (server data plus any local writes).
+ *
+ * @constructor
+ */
+export declare class ViewCache {
+    private readonly eventCache_;
+    private readonly serverCache_;
+    /**
+     *
+     * @param {!CacheNode} eventCache_
+     * @param {!CacheNode} serverCache_
+     */
+    constructor(eventCache_: CacheNode, serverCache_: CacheNode);
+    /**
+     * @const
+     * @type {ViewCache}
+     */
+    static Empty: ViewCache;
+    /**
+     * @param {!Node} eventSnap
+     * @param {boolean} complete
+     * @param {boolean} filtered
+     * @return {!ViewCache}
+     */
+    updateEventSnap(eventSnap: Node, complete: boolean, filtered: boolean): ViewCache;
+    /**
+     * @param {!Node} serverSnap
+     * @param {boolean} complete
+     * @param {boolean} filtered
+     * @return {!ViewCache}
+     */
+    updateServerSnap(serverSnap: Node, complete: boolean, filtered: boolean): ViewCache;
+    /**
+     * @return {!CacheNode}
+     */
+    getEventCache(): CacheNode;
+    /**
+     * @return {?Node}
+     */
+    getCompleteEventSnap(): Node | null;
+    /**
+     * @return {!CacheNode}
+     */
+    getServerCache(): CacheNode;
+    /**
+     * @return {?Node}
+     */
+    getCompleteServerSnap(): Node | null;
+}

node_modules/@firebase/database/dist/src/core/view/ViewProcessor.d.ts

@@ -0,0 +1,166 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Operation } from '../operation/Operation';
+import { ChildChangeAccumulator } from './ChildChangeAccumulator';
+import { Change } from './Change';
+import { Path } from '../util/Path';
+import { ViewCache } from './ViewCache';
+import { NodeFilter } from './filter/NodeFilter';
+import { WriteTreeRef } from '../WriteTree';
+import { Node } from '../snap/Node';
+/**
+ * @constructor
+ * @struct
+ */
+export declare class ProcessorResult {
+    readonly viewCache: ViewCache;
+    readonly changes: Change[];
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Array.<!Change>} changes
+     */
+    constructor(viewCache: ViewCache, changes: Change[]);
+}
+/**
+ * @constructor
+ */
+export declare class ViewProcessor {
+    private readonly filter_;
+    /**
+     * @param {!NodeFilter} filter_
+     */
+    constructor(filter_: NodeFilter);
+    /**
+     * @param {!ViewCache} viewCache
+     */
+    assertIndexed(viewCache: ViewCache): void;
+    /**
+     * @param {!ViewCache} oldViewCache
+     * @param {!Operation} operation
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeCache
+     * @return {!ProcessorResult}
+     */
+    applyOperation(oldViewCache: ViewCache, operation: Operation, writesCache: WriteTreeRef, completeCache: Node | null): ProcessorResult;
+    /**
+     * @param {!ViewCache} oldViewCache
+     * @param {!ViewCache} newViewCache
+     * @param {!Array.<!Change>} accumulator
+     * @private
+     */
+    private static maybeAddValueEvent_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} changePath
+     * @param {!WriteTreeRef} writesCache
+     * @param {!CompleteChildSource} source
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private generateEventCacheAfterServerEvent_;
+    /**
+     * @param {!ViewCache} oldViewCache
+     * @param {!Path} changePath
+     * @param {!Node} changedSnap
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeCache
+     * @param {boolean} filterServerNode
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    applyServerOverwrite_(oldViewCache: ViewCache, changePath: Path, changedSnap: Node, writesCache: WriteTreeRef, completeCache: Node | null, filterServerNode: boolean, accumulator: ChildChangeAccumulator): ViewCache;
+    /**
+     * @param {!ViewCache} oldViewCache
+     * @param {!Path} changePath
+     * @param {!Node} changedSnap
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeCache
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    applyUserOverwrite_(oldViewCache: ViewCache, changePath: Path, changedSnap: Node, writesCache: WriteTreeRef, completeCache: Node | null, accumulator: ChildChangeAccumulator): ViewCache;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {string} childKey
+     * @return {boolean}
+     * @private
+     */
+    private static cacheHasChild_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} path
+     * @param {ImmutableTree.<!Node>} changedChildren
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} serverCache
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private applyUserMerge_;
+    /**
+     * @param {!Node} node
+     * @param {ImmutableTree.<!Node>} merge
+     * @return {!Node}
+     * @private
+     */
+    private applyMerge_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} path
+     * @param {!ImmutableTree.<!Node>} changedChildren
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} serverCache
+     * @param {boolean} filterServerNode
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private applyServerMerge_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} ackPath
+     * @param {!ImmutableTree<!boolean>} affectedTree
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeCache
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private ackUserWrite_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} path
+     * @param {!WriteTreeRef} writesCache
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private listenComplete_;
+    /**
+     * @param {!ViewCache} viewCache
+     * @param {!Path} path
+     * @param {!WriteTreeRef} writesCache
+     * @param {?Node} completeServerCache
+     * @param {!ChildChangeAccumulator} accumulator
+     * @return {!ViewCache}
+     * @private
+     */
+    private revertUserWrite_;
+}

node_modules/@firebase/database/dist/src/core/view/filter/IndexedFilter.d.ts

@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { NodeFilter } from './NodeFilter';
+import { Index } from '../../snap/indexes/Index';
+import { Path } from '../../util/Path';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { Node } from '../../snap/Node';
+/**
+ * Doesn't really filter nodes but applies an index to the node and keeps track of any changes
+ *
+ * @constructor
+ * @implements {NodeFilter}
+ * @param {!Index} index
+ */
+export declare class IndexedFilter implements NodeFilter {
+    private readonly index_;
+    constructor(index_: Index);
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    /**
+     * @inheritDoc
+     */
+    filtersNodes(): boolean;
+    /**
+     * @inheritDoc
+     */
+    getIndexedFilter(): IndexedFilter;
+    /**
+     * @inheritDoc
+     */
+    getIndex(): Index;
+}

node_modules/@firebase/database/dist/src/core/view/filter/LimitedFilter.d.ts

@@ -0,0 +1,94 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../../snap/Node';
+import { NodeFilter } from './NodeFilter';
+import { Index } from '../../snap/indexes/Index';
+import { IndexedFilter } from './IndexedFilter';
+import { QueryParams } from '../QueryParams';
+import { Path } from '../../util/Path';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+/**
+ * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible
+ *
+ * @constructor
+ * @implements {NodeFilter}
+ */
+export declare class LimitedFilter implements NodeFilter {
+    /**
+     * @const
+     * @type {RangedFilter}
+     * @private
+     */
+    private readonly rangedFilter_;
+    /**
+     * @const
+     * @type {!Index}
+     * @private
+     */
+    private readonly index_;
+    /**
+     * @const
+     * @type {number}
+     * @private
+     */
+    private readonly limit_;
+    /**
+     * @const
+     * @type {boolean}
+     * @private
+     */
+    private readonly reverse_;
+    /**
+     * @param {!QueryParams} params
+     */
+    constructor(params: QueryParams);
+    /**
+     * @inheritDoc
+     */
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    /**
+     * @inheritDoc
+     */
+    filtersNodes(): boolean;
+    /**
+     * @inheritDoc
+     */
+    getIndexedFilter(): IndexedFilter;
+    /**
+     * @inheritDoc
+     */
+    getIndex(): Index;
+    /**
+     * @param {!Node} snap
+     * @param {string} childKey
+     * @param {!Node} childSnap
+     * @param {!CompleteChildSource} source
+     * @param {?ChildChangeAccumulator} changeAccumulator
+     * @return {!Node}
+     * @private
+     */
+    private fullLimitUpdateChild_;
+}

node_modules/@firebase/database/dist/src/core/view/filter/NodeFilter.d.ts

@@ -0,0 +1,75 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { Node } from '../../snap/Node';
+import { Path } from '../../util/Path';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { Index } from '../../snap/indexes/Index';
+/**
+ * NodeFilter is used to update nodes and complete children of nodes while applying queries on the fly and keeping
+ * track of any child changes. This class does not track value changes as value changes depend on more
+ * than just the node itself. Different kind of queries require different kind of implementations of this interface.
+ * @interface
+ */
+export interface NodeFilter {
+    /**
+     * Update a single complete child in the snap. If the child equals the old child in the snap, this is a no-op.
+     * The method expects an indexed snap.
+     *
+     * @param {!Node} snap
+     * @param {string} key
+     * @param {!Node} newChild
+     * @param {!Path} affectedPath
+     * @param {!CompleteChildSource} source
+     * @param {?ChildChangeAccumulator} optChangeAccumulator
+     * @return {!Node}
+     */
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * Update a node in full and output any resulting change from this complete update.
+     *
+     * @param {!Node} oldSnap
+     * @param {!Node} newSnap
+     * @param {?ChildChangeAccumulator} optChangeAccumulator
+     * @return {!Node}
+     */
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * Update the priority of the root node
+     *
+     * @param {!Node} oldSnap
+     * @param {!Node} newPriority
+     * @return {!Node}
+     */
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    /**
+     * Returns true if children might be filtered due to query criteria
+     *
+     * @return {boolean}
+     */
+    filtersNodes(): boolean;
+    /**
+     * Returns the index filter that this filter uses to get a NodeFilter that doesn't filter any children.
+     * @return {!NodeFilter}
+     */
+    getIndexedFilter(): NodeFilter;
+    /**
+     * Returns the index that this filter uses
+     * @return {!Index}
+     */
+    getIndex(): Index;
+}

node_modules/@firebase/database/dist/src/core/view/filter/RangedFilter.d.ts

@@ -0,0 +1,109 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { IndexedFilter } from './IndexedFilter';
+import { NamedNode, Node } from '../../../core/snap/Node';
+import { NodeFilter } from './NodeFilter';
+import { QueryParams } from '../QueryParams';
+import { Index } from '../../snap/indexes/Index';
+import { Path } from '../../util/Path';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+/**
+ * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node
+ *
+ * @constructor
+ * @implements {NodeFilter}
+ */
+export declare class RangedFilter implements NodeFilter {
+    /**
+     * @type {!IndexedFilter}
+     * @const
+     * @private
+     */
+    private indexedFilter_;
+    /**
+     * @const
+     * @type {!Index}
+     * @private
+     */
+    private index_;
+    /**
+     * @const
+     * @type {!NamedNode}
+     * @private
+     */
+    private startPost_;
+    /**
+     * @const
+     * @type {!NamedNode}
+     * @private
+     */
+    private endPost_;
+    /**
+     * @param {!QueryParams} params
+     */
+    constructor(params: QueryParams);
+    /**
+     * @return {!NamedNode}
+     */
+    getStartPost(): NamedNode;
+    /**
+     * @return {!NamedNode}
+     */
+    getEndPost(): NamedNode;
+    /**
+     * @param {!NamedNode} node
+     * @return {boolean}
+     */
+    matches(node: NamedNode): boolean;
+    /**
+     * @inheritDoc
+     */
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * @inheritDoc
+     */
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    /**
+     * @inheritDoc
+     */
+    filtersNodes(): boolean;
+    /**
+     * @inheritDoc
+     */
+    getIndexedFilter(): IndexedFilter;
+    /**
+     * @inheritDoc
+     */
+    getIndex(): Index;
+    /**
+     * @param {!QueryParams} params
+     * @return {!NamedNode}
+     * @private
+     */
+    private static getStartPost_;
+    /**
+     * @param {!QueryParams} params
+     * @return {!NamedNode}
+     * @private
+     */
+    private static getEndPost_;
+}

node_modules/@firebase/database/dist/src/realtime/BrowserPollConnection.d.ts

@@ -0,0 +1,206 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { PacketReceiver } from './polling/PacketReceiver';
+import { Transport } from './Transport';
+import { RepoInfo } from '../core/RepoInfo';
+export declare const FIREBASE_LONGPOLL_START_PARAM = "start";
+export declare const FIREBASE_LONGPOLL_CLOSE_COMMAND = "close";
+export declare const FIREBASE_LONGPOLL_COMMAND_CB_NAME = "pLPCommand";
+export declare const FIREBASE_LONGPOLL_DATA_CB_NAME = "pRTLPCB";
+export declare const FIREBASE_LONGPOLL_ID_PARAM = "id";
+export declare const FIREBASE_LONGPOLL_PW_PARAM = "pw";
+export declare const FIREBASE_LONGPOLL_SERIAL_PARAM = "ser";
+export declare const FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = "cb";
+export declare const FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = "seg";
+export declare const FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = "ts";
+export declare const FIREBASE_LONGPOLL_DATA_PARAM = "d";
+export declare const FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM = "disconn";
+export declare const FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = "dframe";
+/**
+ * This class manages a single long-polling connection.
+ *
+ * @constructor
+ * @implements {Transport}
+ */
+export declare class BrowserPollConnection implements Transport {
+    connId: string;
+    repoInfo: RepoInfo;
+    transportSessionId?: string;
+    lastSessionId?: string;
+    bytesSent: number;
+    bytesReceived: number;
+    urlFn: (params: object) => string;
+    scriptTagHolder: FirebaseIFrameScriptHolder;
+    myDisconnFrame: HTMLIFrameElement;
+    curSegmentNum: number;
+    myPacketOrderer: PacketReceiver;
+    id: string;
+    password: string;
+    private log_;
+    private stats_;
+    private everConnected_;
+    private isClosed_;
+    private connectTimeoutTimer_;
+    private onDisconnect_;
+    /**
+     * @param {string} connId An identifier for this connection, used for logging
+     * @param {RepoInfo} repoInfo The info for the endpoint to send data to.
+     * @param {string=} transportSessionId Optional transportSessionid if we are reconnecting for an existing
+     *                                         transport session
+     * @param {string=}  lastSessionId Optional lastSessionId if the PersistentConnection has already created a
+     *                                     connection previously
+     */
+    constructor(connId: string, repoInfo: RepoInfo, transportSessionId?: string, lastSessionId?: string);
+    /**
+     *
+     * @param {function(Object)} onMessage Callback when messages arrive
+     * @param {function()} onDisconnect Callback with connection lost.
+     */
+    open(onMessage: (msg: {}) => void, onDisconnect: (a?: boolean) => void): void;
+    /**
+     * Call this when a handshake has completed successfully and we want to consider the connection established
+     */
+    start(): void;
+    private static forceAllow_;
+    /**
+     * Forces long polling to be considered as a potential transport
+     */
+    static forceAllow(): void;
+    private static forceDisallow_;
+    /**
+     * Forces longpolling to not be considered as a potential transport
+     */
+    static forceDisallow(): void;
+    static isAvailable(): boolean;
+    /**
+     * No-op for polling
+     */
+    markConnectionHealthy(): void;
+    /**
+     * Stops polling and cleans up the iframe
+     * @private
+     */
+    private shutdown_;
+    /**
+     * Triggered when this transport is closed
+     * @private
+     */
+    private onClosed_;
+    /**
+     * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server
+     * that we've left.
+     */
+    close(): void;
+    /**
+     * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then
+     * broken into chunks (since URLs have a small maximum length).
+     * @param {!Object} data The JSON data to transmit.
+     */
+    send(data: {}): void;
+    /**
+     * This is how we notify the server that we're leaving.
+     * We aren't able to send requests with DHTML on a window close event, but we can
+     * trigger XHR requests in some browsers (everything but Opera basically).
+     * @param {!string} id
+     * @param {!string} pw
+     */
+    addDisconnectPingFrame(id: string, pw: string): void;
+    /**
+     * Used to track the bytes received by this client
+     * @param {*} args
+     * @private
+     */
+    private incrementIncomingBytes_;
+}
+export interface IFrameElement extends HTMLIFrameElement {
+    doc: Document;
+}
+/*********************************************************************************************
+ * A wrapper around an iframe that is used as a long-polling script holder.
+ * @constructor
+ *********************************************************************************************/
+export declare class FirebaseIFrameScriptHolder {
+    onDisconnect: () => void;
+    urlFn: (a: object) => string;
+    outstandingRequests: Set<number>;
+    pendingSegs: Array<{
+        seg: number;
+        ts: number;
+        d: unknown;
+    }>;
+    currentSerial: number;
+    sendNewPolls: boolean;
+    uniqueCallbackIdentifier: number;
+    myIFrame: IFrameElement;
+    alive: boolean;
+    myID: string;
+    myPW: string;
+    commandCB: (command: string, ...args: unknown[]) => void;
+    onMessageCB: (...args: unknown[]) => void;
+    /**
+     * @param commandCB - The callback to be called when control commands are recevied from the server.
+     * @param onMessageCB - The callback to be triggered when responses arrive from the server.
+     * @param onDisconnect - The callback to be triggered when this tag holder is closed
+     * @param urlFn - A function that provides the URL of the endpoint to send data to.
+     */
+    constructor(commandCB: (command: string, ...args: unknown[]) => void, onMessageCB: (...args: unknown[]) => void, onDisconnect: () => void, urlFn: (a: object) => string);
+    /**
+     * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can
+     * actually use.
+     * @private
+     * @return {Element}
+     */
+    private static createIFrame_;
+    /**
+     * Cancel all outstanding queries and remove the frame.
+     */
+    close(): void;
+    /**
+     * Actually start the long-polling session by adding the first script tag(s) to the iframe.
+     * @param {!string} id - The ID of this connection
+     * @param {!string} pw - The password for this connection
+     */
+    startLongPoll(id: string, pw: string): void;
+    /**
+     * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't
+     * too many outstanding requests and we are still alive.
+     *
+     * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if
+     * needed.
+     */
+    private newRequest_;
+    /**
+     * Queue a packet for transmission to the server.
+     * @param segnum - A sequential id for this packet segment used for reassembly
+     * @param totalsegs - The total number of segments in this packet
+     * @param data - The data for this segment.
+     */
+    enqueueSegment(segnum: number, totalsegs: number, data: unknown): void;
+    /**
+     * Add a script tag for a regular long-poll request.
+     * @param {!string} url - The URL of the script tag.
+     * @param {!number} serial - The serial number of the request.
+     * @private
+     */
+    private addLongPollTag_;
+    /**
+     * Add an arbitrary script tag to the iframe.
+     * @param {!string} url - The URL for the script tag source.
+     * @param {!function()} loadCB - A callback to be triggered once the script has loaded.
+     */
+    addTag(url: string, loadCB: () => void): void;
+}

node_modules/@firebase/database/dist/src/realtime/Connection.d.ts

@@ -0,0 +1,117 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+/**
+ * Creates a new real-time connection to the server using whichever method works
+ * best in the current browser.
+ *
+ * @constructor
+ */
+export declare class Connection {
+    id: string;
+    private repoInfo_;
+    private onMessage_;
+    private onReady_;
+    private onDisconnect_;
+    private onKill_;
+    lastSessionId?: string;
+    connectionCount: number;
+    pendingDataMessages: unknown[];
+    sessionId: string;
+    private conn_;
+    private healthyTimeout_;
+    private isHealthy_;
+    private log_;
+    private primaryResponsesRequired_;
+    private rx_;
+    private secondaryConn_;
+    private secondaryResponsesRequired_;
+    private state_;
+    private transportManager_;
+    private tx_;
+    /**
+     * @param {!string} id - an id for this connection
+     * @param {!RepoInfo} repoInfo_ - the info for the endpoint to connect to
+     * @param {function(Object)} onMessage_ - the callback to be triggered when a server-push message arrives
+     * @param {function(number, string)} onReady_ - the callback to be triggered when this connection is ready to send messages.
+     * @param {function()} onDisconnect_ - the callback to be triggered when a connection was lost
+     * @param {function(string)} onKill_ - the callback to be triggered when this connection has permanently shut down.
+     * @param {string=} lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server
+     */
+    constructor(id: string, repoInfo_: RepoInfo, onMessage_: (a: {}) => void, onReady_: (a: number, b: string) => void, onDisconnect_: () => void, onKill_: (a: string) => void, lastSessionId?: string);
+    /**
+     * Starts a connection attempt
+     * @private
+     */
+    private start_;
+    /**
+     * @return {!string}
+     * @private
+     */
+    private nextTransportId_;
+    private disconnReceiver_;
+    private connReceiver_;
+    /**
+     *
+     * @param {Object} dataMsg An arbitrary data message to be sent to the server
+     */
+    sendRequest(dataMsg: object): void;
+    tryCleanupConnection(): void;
+    private onSecondaryControl_;
+    private onSecondaryMessageReceived_;
+    private upgradeIfSecondaryHealthy_;
+    private proceedWithUpgrade_;
+    private onPrimaryMessageReceived_;
+    private onDataMessage_;
+    private onPrimaryResponse_;
+    private onControl_;
+    /**
+     *
+     * @param {Object} handshake The handshake data returned from the server
+     * @private
+     */
+    private onHandshake_;
+    private tryStartUpgrade_;
+    private startUpgrade_;
+    private onReset_;
+    private onConnectionEstablished_;
+    private sendPingOnPrimaryIfNecessary_;
+    private onSecondaryConnectionLost_;
+    /**
+     *
+     * @param {boolean} everConnected Whether or not the connection ever reached a server. Used to determine if
+     * we should flush the host cache
+     * @private
+     */
+    private onConnectionLost_;
+    /**
+     *
+     * @param {string} reason
+     * @private
+     */
+    private onConnectionShutdown_;
+    private sendData_;
+    /**
+     * Cleans up this connection, calling the appropriate callbacks
+     */
+    close(): void;
+    /**
+     *
+     * @private
+     */
+    private closeConnections_;
+}

node_modules/@firebase/database/dist/src/realtime/Constants.d.ts

@@ -0,0 +1,25 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export declare const PROTOCOL_VERSION = "5";
+export declare const VERSION_PARAM = "v";
+export declare const TRANSPORT_SESSION_PARAM = "s";
+export declare const REFERER_PARAM = "r";
+export declare const FORGE_REF = "f";
+export declare const FORGE_DOMAIN = "firebaseio.com";
+export declare const LAST_SESSION_PARAM = "ls";
+export declare const WEBSOCKET = "websocket";
+export declare const LONG_POLLING = "long_polling";

node_modules/@firebase/database/dist/src/realtime/Transport.d.ts

@@ -0,0 +1,65 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+export interface TransportConstructor {
+    new (connId: string, repoInfo: RepoInfo, transportSessionId?: string, lastSessionId?: string): Transport;
+    isAvailable: () => boolean;
+    responsesRequiredToBeHealthy?: number;
+    healthyTimeout?: number;
+}
+export declare abstract class Transport {
+    /**
+     * Bytes received since connection started.
+     * @type {number}
+     */
+    abstract bytesReceived: number;
+    /**
+     * Bytes sent since connection started.
+     * @type {number}
+     */
+    abstract bytesSent: number;
+    /**
+     * An identifier for this connection, used for logging
+     * @type {string}
+     */
+    abstract connId: string;
+    /**
+     *
+     * @param {string} connId An identifier for this connection, used for logging
+     * @param {RepoInfo} repoInfo The info for the endpoint to send data to.
+     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport session
+     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection
+     * @interface
+     */
+    constructor(connId: string, repoInfo: RepoInfo, transportSessionId?: string, lastSessionId?: string);
+    /**
+     * @param {function(Object)} onMessage Callback when messages arrive
+     * @param {function()} onDisconnect Callback with connection lost.
+     */
+    abstract open(onMessage: (a: {}) => void, onDisconnect: (a?: boolean) => void): void;
+    abstract start(): void;
+    abstract close(): void;
+    /**
+     * @param {!Object} data The JSON data to transmit
+     */
+    abstract send(data: {}): void;
+    abstract markConnectionHealthy(): void;
+    abstract markConnectionHealthy(): void;
+}
+export interface TransportConstructor {
+    new (connId: string, RepoInfo: any, transportSessionId?: string, lastSessionId?: string): any;
+}

node_modules/@firebase/database/dist/src/realtime/TransportManager.d.ts

@@ -0,0 +1,55 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { BrowserPollConnection } from './BrowserPollConnection';
+import { WebSocketConnection } from './WebSocketConnection';
+import { TransportConstructor } from './Transport';
+import { RepoInfo } from '../core/RepoInfo';
+/**
+ * Currently simplistic, this class manages what transport a Connection should use at various stages of its
+ * lifecycle.
+ *
+ * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if
+ * they are available.
+ * @constructor
+ */
+export declare class TransportManager {
+    private transports_;
+    /**
+     * @const
+     * @type {!Array.<function(new:Transport, string, RepoInfo, string=)>}
+     */
+    static get ALL_TRANSPORTS(): (typeof BrowserPollConnection | typeof WebSocketConnection)[];
+    /**
+     * @param {!RepoInfo} repoInfo Metadata around the namespace we're connecting to
+     */
+    constructor(repoInfo: RepoInfo);
+    /**
+     * @param {!RepoInfo} repoInfo
+     * @private
+     */
+    private initTransports_;
+    /**
+     * @return {function(new:Transport, !string, !RepoInfo, string=, string=)} The constructor for the
+     * initial transport to use
+     */
+    initialTransport(): TransportConstructor;
+    /**
+     * @return {?function(new:Transport, function(),function(), string=)} The constructor for the next
+     * transport, or null
+     */
+    upgradeTransport(): TransportConstructor | null;
+}

node_modules/@firebase/database/dist/src/realtime/WebSocketConnection.d.ts

@@ -0,0 +1,130 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+import { Transport } from './Transport';
+export declare function setWebSocketImpl(impl: any): void;
+/**
+ * Create a new websocket connection with the given callbacks.
+ * @constructor
+ * @implements {Transport}
+ */
+export declare class WebSocketConnection implements Transport {
+    connId: string;
+    keepaliveTimer: number | null;
+    frames: string[] | null;
+    totalFrames: number;
+    bytesSent: number;
+    bytesReceived: number;
+    connURL: string;
+    onDisconnect: (a?: boolean) => void;
+    onMessage: (msg: {}) => void;
+    mySock: WebSocket | null;
+    private log_;
+    private stats_;
+    private everConnected_;
+    private isClosed_;
+    /**
+     * @param {string} connId identifier for this transport
+     * @param {RepoInfo} repoInfo The info for the websocket endpoint.
+     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport
+     *                                         session
+     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection
+     */
+    constructor(connId: string, repoInfo: RepoInfo, transportSessionId?: string, lastSessionId?: string);
+    /**
+     * @param {RepoInfo} repoInfo The info for the websocket endpoint.
+     * @param {string=} transportSessionId Optional transportSessionId if this is connecting to an existing transport
+     *                                         session
+     * @param {string=} lastSessionId Optional lastSessionId if there was a previous connection
+     * @return {string} connection url
+     * @private
+     */
+    private static connectionURL_;
+    /**
+     *
+     * @param onMessage Callback when messages arrive
+     * @param onDisconnect Callback with connection lost.
+     */
+    open(onMessage: (msg: {}) => void, onDisconnect: (a?: boolean) => void): void;
+    /**
+     * No-op for websockets, we don't need to do anything once the connection is confirmed as open
+     */
+    start(): void;
+    static forceDisallow_: boolean;
+    static forceDisallow(): void;
+    static isAvailable(): boolean;
+    /**
+     * Number of response before we consider the connection "healthy."
+     * @type {number}
+     */
+    static responsesRequiredToBeHealthy: number;
+    /**
+     * Time to wait for the connection te become healthy before giving up.
+     * @type {number}
+     */
+    static healthyTimeout: number;
+    /**
+     * Returns true if we previously failed to connect with this transport.
+     * @return {boolean}
+     */
+    static previouslyFailed(): boolean;
+    markConnectionHealthy(): void;
+    private appendFrame_;
+    /**
+     * @param {number} frameCount The number of frames we are expecting from the server
+     * @private
+     */
+    private handleNewFrameCount_;
+    /**
+     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1
+     * @param {!String} data
+     * @return {?String} Any remaining data to be process, or null if there is none
+     * @private
+     */
+    private extractFrameCount_;
+    /**
+     * Process a websocket frame that has arrived from the server.
+     * @param mess The frame data
+     */
+    handleIncomingFrame(mess: {
+        [k: string]: unknown;
+    }): void;
+    /**
+     * Send a message to the server
+     * @param {Object} data The JSON object to transmit
+     */
+    send(data: {}): void;
+    private shutdown_;
+    private onClosed_;
+    /**
+     * External-facing close handler.
+     * Close the websocket and kill the connection.
+     */
+    close(): void;
+    /**
+     * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after
+     * the last activity.
+     */
+    resetKeepAlive(): void;
+    /**
+     * Send a string over the websocket.
+     *
+     * @param {string} str String to send.
+     * @private
+     */
+    private sendString_;
+}

node_modules/@firebase/database/dist/src/realtime/polling/PacketReceiver.d.ts

@@ -0,0 +1,41 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+/**
+ * This class ensures the packets from the server arrive in order
+ * This class takes data from the server and ensures it gets passed into the callbacks in order.
+ * @constructor
+ */
+export declare class PacketReceiver {
+    private onMessage_;
+    pendingResponses: unknown[];
+    currentResponseNum: number;
+    closeAfterResponse: number;
+    onClose: (() => void) | null;
+    /**
+     * @param onMessage_
+     */
+    constructor(onMessage_: (a: {}) => void);
+    closeAfter(responseNum: number, callback: () => void): void;
+    /**
+     * Each message from the server comes with a response number, and an array of data. The responseNumber
+     * allows us to ensure that we process them in the right order, since we can't be guaranteed that all
+     * browsers will respond in the same order as the requests we sent
+     * @param {number} requestNum
+     * @param {Array} data
+     */
+    handleResponse(requestNum: number, data: unknown[]): void;
+}

node_modules/@firebase/database/dist/test/browser/crawler_support.test.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export {};

node_modules/@firebase/database/dist/test/compound_write.test.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export {};

node_modules/@firebase/database/dist/test/connection.test.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export {};

node_modules/@firebase/database/dist/test/database.test.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+import '../index';

node_modules/@firebase/database/dist/test/datasnapshot.test.d.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export {};

node_modules/@firebase/database/dist/test/helpers/EventAccumulator.d.ts

@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright 2017 Google Inc.
+ *
+ * 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.
+ */
+export declare const EventAccumulatorFactory: {
+    waitsForCount: (maxCount: any) => EventAccumulator;
+};
+export declare class EventAccumulator {
+    condition: Function;
+    eventData: any[];
+    promise: any;
+    resolve: any;
+    reject: any;
+    private onResetFxn;
+    private onEventFxn;
+    constructor(condition: Function);
+    addEvent(eventData?: any): void;
+    reset(condition?: Function): void;
+    onEvent(cb: Function): void;
+    onReset(cb: Function): void;
+    _testCondition(): any;
+}