pain

90 files changed, 6514 insertions, 0 deletions

diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api.d.ts
new file mode 100644
index 0000000..26bc1ee
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api.d.ts
@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './api.standalone';
+export { getDatabase } from './api/Database';
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api.standalone.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api.standalone.d.ts
new file mode 100644
index 0000000..1c65ab6
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api.standalone.d.ts
@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export { Database, EmulatorMockTokenOptions, enableLogging, goOffline, goOnline, forceWebSockets, forceLongPolling, connectDatabaseEmulator } from './api/Database';
+export { Query, DatabaseReference, ListenOptions, Unsubscribe, ThenableReference } from './api/Reference';
+export { OnDisconnect } from './api/OnDisconnect';
+export { DataSnapshot, EventType, IteratedDataSnapshot, QueryConstraint, QueryConstraintType, endAt, endBefore, equalTo, get, limitToFirst, limitToLast, off, onChildAdded, onChildChanged, onChildMoved, onChildRemoved, onDisconnect, onValue, orderByChild, orderByKey, orderByPriority, orderByValue, push, query, ref, refFromURL, remove, set, setPriority, setWithPriority, startAfter, startAt, update, child } from './api/Reference_impl';
+export { increment, serverTimestamp } from './api/ServerValue';
+export { runTransaction, TransactionOptions, TransactionResult } from './api/Transaction';
+export { setSDKVersion as _setSDKVersion } from './core/version';
+export { ReferenceImpl as _ReferenceImpl, QueryImpl as _QueryImpl } from './api/Reference_impl';
+export { repoManagerDatabaseFromApp as _repoManagerDatabaseFromApp } from './api/Database';
+export { validatePathString as _validatePathString, validateWritablePath as _validateWritablePath } from './core/util/validation';
+export { UserCallback as _UserCallback } from './core/view/EventRegistration';
+export { QueryParams as _QueryParams } from './core/view/QueryParams';
+export { hijackHash as _TEST_ACCESS_hijackHash, forceRestClient as _TEST_ACCESS_forceRestClient } from './api/test_access';
+export * from './internal/index';
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/Database.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/Database.d.ts
new file mode 100644
index 0000000..9a79baf
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/Database.d.ts
@@ -0,0 +1,137 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { _FirebaseService, FirebaseApp } from '@firebase/app';
+import { AppCheckInternalComponentName } from '@firebase/app-check-interop-types';
+import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
+import { Provider } from '@firebase/component';
+import { EmulatorMockTokenOptions } from '@firebase/util';
+import { Repo } from '../core/Repo';
+import { ReferenceImpl } from './Reference_impl';
+export { EmulatorMockTokenOptions } from '@firebase/util';
+/**
+ * This function should only ever be called to CREATE a new database instance.
+ * @internal
+ */
+export declare function repoManagerDatabaseFromApp(app: FirebaseApp, authProvider: Provider<FirebaseAuthInternalName>, appCheckProvider?: Provider<AppCheckInternalComponentName>, url?: string, nodeAdmin?: boolean): Database;
+/**
+ * Forces us to use ReadonlyRestClient instead of PersistentConnection for new Repos.
+ */
+export declare function repoManagerForceRestClient(forceRestClient: boolean): void;
+/**
+ * Class representing a Firebase Realtime Database.
+ */
+export declare class Database implements _FirebaseService {
+    _repoInternal: Repo;
+    /** The {@link @firebase/app#FirebaseApp} associated with this Realtime Database instance. */
+    readonly app: FirebaseApp;
+    /** Represents a `Database` instance. */
+    readonly 'type' = "database";
+    /** Track if the instance has been used (root or repo accessed) */
+    _instanceStarted: boolean;
+    /** Backing state for root_ */
+    private _rootInternal?;
+    /** @hideconstructor */
+    constructor(_repoInternal: Repo, 
+    /** The {@link @firebase/app#FirebaseApp} associated with this Realtime Database instance. */
+    app: FirebaseApp);
+    get _repo(): Repo;
+    get _root(): ReferenceImpl;
+    _delete(): Promise<void>;
+    _checkNotDeleted(apiName: string): void;
+}
+/**
+ * Force the use of websockets instead of longPolling.
+ */
+export declare function forceWebSockets(): void;
+/**
+ * Force the use of longPolling instead of websockets. This will be ignored if websocket protocol is used in databaseURL.
+ */
+export declare function forceLongPolling(): void;
+/**
+ * Returns the instance of the Realtime Database SDK that is associated with the provided
+ * {@link @firebase/app#FirebaseApp}. Initializes a new instance with default settings if
+ * no instance exists or if the existing instance uses a custom database URL.
+ *
+ * @param app - The {@link @firebase/app#FirebaseApp} instance that the returned Realtime
+ * Database instance is associated with.
+ * @param url - The URL of the Realtime Database instance to connect to. If not
+ * provided, the SDK connects to the default instance of the Firebase App.
+ * @returns The `Database` instance of the provided app.
+ */
+export declare function getDatabase(app?: FirebaseApp, url?: string): Database;
+/**
+ * Modify the provided instance to communicate with the Realtime Database
+ * emulator.
+ *
+ * <p>Note: This method must be called before performing any other operation.
+ *
+ * @param db - The instance to modify.
+ * @param host - The emulator host (ex: localhost)
+ * @param port - The emulator port (ex: 8080)
+ * @param options.mockUserToken - the mock auth token to use for unit testing Security Rules
+ */
+export declare function connectDatabaseEmulator(db: Database, host: string, port: number, options?: {
+    mockUserToken?: EmulatorMockTokenOptions | string;
+}): void;
+/**
+ * Disconnects from the server (all Database operations will be completed
+ * offline).
+ *
+ * The client automatically maintains a persistent connection to the Database
+ * server, which will remain active indefinitely and reconnect when
+ * disconnected. However, the `goOffline()` and `goOnline()` methods may be used
+ * to control the client connection in cases where a persistent connection is
+ * undesirable.
+ *
+ * While offline, the client will no longer receive data updates from the
+ * Database. However, all Database operations performed locally will continue to
+ * immediately fire events, allowing your application to continue behaving
+ * normally. Additionally, each operation performed locally will automatically
+ * be queued and retried upon reconnection to the Database server.
+ *
+ * To reconnect to the Database and begin receiving remote events, see
+ * `goOnline()`.
+ *
+ * @param db - The instance to disconnect.
+ */
+export declare function goOffline(db: Database): void;
+/**
+ * Reconnects to the server and synchronizes the offline Database state
+ * with the server state.
+ *
+ * This method should be used after disabling the active connection with
+ * `goOffline()`. Once reconnected, the client will transmit the proper data
+ * and fire the appropriate events so that your client "catches up"
+ * automatically.
+ *
+ * @param db - The instance to reconnect.
+ */
+export declare function goOnline(db: Database): void;
+/**
+ * Logs debugging information to the console.
+ *
+ * @param enabled - Enables logging if `true`, disables logging if `false`.
+ * @param persistent - Remembers the logging state between page refreshes if
+ * `true`.
+ */
+export declare function enableLogging(enabled: boolean, persistent?: boolean): any;
+/**
+ * Logs debugging information to the console.
+ *
+ * @param logger - A custom logger function to control how things get logged.
+ */
+export declare function enableLogging(logger: (message: string) => unknown): any;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/OnDisconnect.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/OnDisconnect.d.ts
new file mode 100644
index 0000000..bbae779
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/OnDisconnect.d.ts
@@ -0,0 +1,110 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Repo } from '../core/Repo';
+import { Path } from '../core/util/Path';
+/**
+ * The `onDisconnect` class allows you to write or clear data when your client
+ * disconnects from the Database server. These updates occur whether your
+ * client disconnects cleanly or not, so you can rely on them to clean up data
+ * even if a connection is dropped or a client crashes.
+ *
+ * The `onDisconnect` class is most commonly used to manage presence in
+ * applications where it is useful to detect how many clients are connected and
+ * when other clients disconnect. See
+ * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
+ * for more information.
+ *
+ * To avoid problems when a connection is dropped before the requests can be
+ * transferred to the Database server, these functions should be called before
+ * writing any data.
+ *
+ * Note that `onDisconnect` operations are only triggered once. If you want an
+ * operation to occur each time a disconnect occurs, you'll need to re-establish
+ * the `onDisconnect` operations each time you reconnect.
+ */
+export declare class OnDisconnect {
+    private _repo;
+    private _path;
+    /** @hideconstructor */
+    constructor(_repo: Repo, _path: Path);
+    /**
+     * Cancels all previously queued `onDisconnect()` set or update events for this
+     * location and all children.
+     *
+     * If a write has been queued for this location via a `set()` or `update()` at a
+     * parent location, the write at this location will be canceled, though writes
+     * to sibling locations will still occur.
+     *
+     * @returns Resolves when synchronization to the server is complete.
+     */
+    cancel(): Promise<void>;
+    /**
+     * Ensures the data at this location is deleted when the client is disconnected
+     * (due to closing the browser, navigating to a new page, or network issues).
+     *
+     * @returns Resolves when synchronization to the server is complete.
+     */
+    remove(): Promise<void>;
+    /**
+     * Ensures the data at this location is set to the specified value when the
+     * client is disconnected (due to closing the browser, navigating to a new page,
+     * or network issues).
+     *
+     * `set()` is especially useful for implementing "presence" systems, where a
+     * value should be changed or cleared when a user disconnects so that they
+     * appear "offline" to other users. See
+     * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
+     * for more information.
+     *
+     * Note that `onDisconnect` operations are only triggered once. If you want an
+     * operation to occur each time a disconnect occurs, you'll need to re-establish
+     * the `onDisconnect` operations each time.
+     *
+     * @param value - The value to be written to this location on disconnect (can
+     * be an object, array, string, number, boolean, or null).
+     * @returns Resolves when synchronization to the Database is complete.
+     */
+    set(value: unknown): Promise<void>;
+    /**
+     * Ensures the data at this location is set to the specified value and priority
+     * when the client is disconnected (due to closing the browser, navigating to a
+     * new page, or network issues).
+     *
+     * @param value - The value to be written to this location on disconnect (can
+     * be an object, array, string, number, boolean, or null).
+     * @param priority - The priority to be written (string, number, or null).
+     * @returns Resolves when synchronization to the Database is complete.
+     */
+    setWithPriority(value: unknown, priority: number | string | null): Promise<void>;
+    /**
+     * Writes multiple values at this location when the client is disconnected (due
+     * to closing the browser, navigating to a new page, or network issues).
+     *
+     * The `values` argument contains multiple property-value pairs that will be
+     * written to the Database together. Each child property can either be a simple
+     * property (for example, "name") or a relative path (for example, "name/first")
+     * from the current location to the data to update.
+     *
+     * As opposed to the `set()` method, `update()` can be use to selectively update
+     * only the referenced properties at the current location (instead of replacing
+     * all the child properties at the current location).
+     *
+     * @param values - Object containing multiple values.
+     * @returns Resolves when synchronization to the Database is complete.
+     */
+    update(values: object): Promise<void>;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/Reference.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/Reference.d.ts
new file mode 100644
index 0000000..0d9e054
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/Reference.d.ts
@@ -0,0 +1,124 @@
+import { Repo } from '../core/Repo';
+import { Path } from '../core/util/Path';
+import { QueryContext } from '../core/view/EventRegistration';
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * A `Query` sorts and filters the data at a Database location so only a subset
+ * of the child data is included. This can be used to order a collection of
+ * data by some attribute (for example, height of dinosaurs) as well as to
+ * restrict a large list of items (for example, chat messages) down to a number
+ * suitable for synchronizing to the client. Queries are created by chaining
+ * together one or more of the filter methods defined here.
+ *
+ * Just as with a `DatabaseReference`, you can receive data from a `Query` by using the
+ * `on*()` methods. You will only receive events and `DataSnapshot`s for the
+ * subset of the data that matches your query.
+ *
+ * See {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data}
+ * for more information.
+ */
+export interface Query extends QueryContext {
+    /** The `DatabaseReference` for the `Query`'s location. */
+    readonly ref: DatabaseReference;
+    /**
+     * Returns whether or not the current and provided queries represent the same
+     * location, have the same query parameters, and are from the same instance of
+     * `FirebaseApp`.
+     *
+     * Two `DatabaseReference` objects are equivalent if they represent the same location
+     * and are from the same instance of `FirebaseApp`.
+     *
+     * Two `Query` objects are equivalent if they represent the same location,
+     * have the same query parameters, and are from the same instance of
+     * `FirebaseApp`. Equivalent queries share the same sort order, limits, and
+     * starting and ending points.
+     *
+     * @param other - The query to compare against.
+     * @returns Whether or not the current and provided queries are equivalent.
+     */
+    isEqual(other: Query | null): boolean;
+    /**
+     * Returns a JSON-serializable representation of this object.
+     *
+     * @returns A JSON-serializable representation of this object.
+     */
+    toJSON(): string;
+    /**
+     * Gets the absolute URL for this location.
+     *
+     * The `toString()` method returns a URL that is ready to be put into a
+     * browser, curl command, or a `refFromURL()` call. Since all of those expect
+     * the URL to be url-encoded, `toString()` returns an encoded URL.
+     *
+     * Append '.json' to the returned URL when typed into a browser to download
+     * JSON-formatted data. If the location is secured (that is, not publicly
+     * readable), you will get a permission-denied error.
+     *
+     * @returns The absolute URL for this location.
+     */
+    toString(): string;
+}
+/**
+ * A `DatabaseReference` represents a specific location in your Database and can be used
+ * for reading or writing data to that Database location.
+ *
+ * You can reference the root or child location in your Database by calling
+ * `ref()` or `ref("child/path")`.
+ *
+ * Writing is done with the `set()` method and reading can be done with the
+ * `on*()` method. See {@link
+ * https://firebase.google.com/docs/database/web/read-and-write}
+ */
+export interface DatabaseReference extends Query {
+    /**
+     * The last part of the `DatabaseReference`'s path.
+     *
+     * For example, `"ada"` is the key for
+     * `https://<DATABASE_NAME>.firebaseio.com/users/ada`.
+     *
+     * The key of a root `DatabaseReference` is `null`.
+     */
+    readonly key: string | null;
+    /**
+     * The parent location of a `DatabaseReference`.
+     *
+     * The parent of a root `DatabaseReference` is `null`.
+     */
+    readonly parent: DatabaseReference | null;
+    /** The root `DatabaseReference` of the Database. */
+    readonly root: DatabaseReference;
+}
+/**
+ * A `Promise` that can also act as a `DatabaseReference` when returned by
+ * {@link push}. The reference is available immediately and the `Promise` resolves
+ * as the write to the backend completes.
+ */
+export interface ThenableReference extends DatabaseReference, Pick<Promise<DatabaseReference>, 'then' | 'catch'> {
+    key: string;
+    parent: DatabaseReference;
+}
+/** A callback that can invoked to remove a listener. */
+export type Unsubscribe = () => void;
+/** An options objects that can be used to customize a listener. */
+export interface ListenOptions {
+    /** Whether to remove the listener after its first invocation. */
+    readonly onlyOnce?: boolean;
+}
+export interface ReferenceConstructor {
+    new (repo: Repo, path: Path): DatabaseReference;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/Reference_impl.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/Reference_impl.d.ts
new file mode 100644
index 0000000..873e00e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/Reference_impl.d.ts
@@ -0,0 +1,1100 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Repo } from '../core/Repo';
+import { Index } from '../core/snap/indexes/Index';
+import { Node } from '../core/snap/Node';
+import { Path } from '../core/util/Path';
+import { Change } from '../core/view/Change';
+import { CancelEvent, DataEvent, EventType } from '../core/view/Event';
+import { CallbackContext, EventRegistration, QueryContext } from '../core/view/EventRegistration';
+import { QueryParams } from '../core/view/QueryParams';
+import { Database } from './Database';
+import { OnDisconnect } from './OnDisconnect';
+import { ListenOptions, Query as Query, DatabaseReference, Unsubscribe, ThenableReference } from './Reference';
+/**
+ * @internal
+ */
+export declare class QueryImpl implements Query, QueryContext {
+    readonly _repo: Repo;
+    readonly _path: Path;
+    readonly _queryParams: QueryParams;
+    readonly _orderByCalled: boolean;
+    /**
+     * @hideconstructor
+     */
+    constructor(_repo: Repo, _path: Path, _queryParams: QueryParams, _orderByCalled: boolean);
+    get key(): string | null;
+    get ref(): DatabaseReference;
+    get _queryIdentifier(): string;
+    /**
+     * An object representation of the query parameters used by this Query.
+     */
+    get _queryObject(): object;
+    isEqual(other: QueryImpl | null): boolean;
+    toJSON(): string;
+    toString(): string;
+}
+/**
+ * @internal
+ */
+export declare class ReferenceImpl extends QueryImpl implements DatabaseReference {
+    /** @hideconstructor */
+    constructor(repo: Repo, path: Path);
+    get parent(): ReferenceImpl | null;
+    get root(): ReferenceImpl;
+}
+/**
+ * A `DataSnapshot` contains data from a Database location.
+ *
+ * Any time you read data from the Database, you receive the data as a
+ * `DataSnapshot`. A `DataSnapshot` is passed to the event callbacks you attach
+ * with `on()` or `once()`. You can extract the contents of the snapshot as a
+ * JavaScript object by calling the `val()` method. Alternatively, you can
+ * traverse into the snapshot by calling `child()` to return child snapshots
+ * (which you could then call `val()` on).
+ *
+ * A `DataSnapshot` is an efficiently generated, immutable copy of the data at
+ * a Database location. It cannot be modified and will never change (to modify
+ * data, you always call the `set()` method on a `Reference` directly).
+ */
+export declare class DataSnapshot {
+    readonly _node: Node;
+    /**
+     * The location of this DataSnapshot.
+     */
+    readonly ref: DatabaseReference;
+    readonly _index: Index;
+    /**
+     * @param _node - A SnapshotNode to wrap.
+     * @param ref - The location this snapshot came from.
+     * @param _index - The iteration order for this snapshot
+     * @hideconstructor
+     */
+    constructor(_node: Node, 
+    /**
+     * The location of this DataSnapshot.
+     */
+    ref: DatabaseReference, _index: Index);
+    /**
+     * Gets the priority value of the data in this `DataSnapshot`.
+     *
+     * Applications need not use priority but can order collections by
+     * ordinary properties (see
+     * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data |Sorting and filtering data}
+     * ).
+     */
+    get priority(): string | number | null;
+    /**
+     * The key (last part of the path) of the location of this `DataSnapshot`.
+     *
+     * The last token in a Database location is considered its key. For example,
+     * "ada" is the key for the /users/ada/ node. Accessing the key on any
+     * `DataSnapshot` will return the key for the location that generated it.
+     * However, accessing the key on the root URL of a Database will return
+     * `null`.
+     */
+    get key(): string | null;
+    /** Returns the number of child properties of this `DataSnapshot`. */
+    get size(): number;
+    /**
+     * Gets another `DataSnapshot` for the location at the specified relative path.
+     *
+     * Passing a relative path to the `child()` method of a DataSnapshot returns
+     * another `DataSnapshot` for the location at the specified relative path. The
+     * relative path can either be a simple child name (for example, "ada") or a
+     * deeper, slash-separated path (for example, "ada/name/first"). If the child
+     * location has no data, an empty `DataSnapshot` (that is, a `DataSnapshot`
+     * whose value is `null`) is returned.
+     *
+     * @param path - A relative path to the location of child data.
+     */
+    child(path: string): DataSnapshot;
+    /**
+     * Returns true if this `DataSnapshot` contains any data. It is slightly more
+     * efficient than using `snapshot.val() !== null`.
+     */
+    exists(): boolean;
+    /**
+     * Exports the entire contents of the DataSnapshot as a JavaScript object.
+     *
+     * The `exportVal()` method is similar to `val()`, except priority information
+     * is included (if available), making it suitable for backing up your data.
+     *
+     * @returns The DataSnapshot's contents as a JavaScript value (Object,
+     *   Array, string, number, boolean, or `null`).
+     */
+    exportVal(): any;
+    /**
+     * Enumerates the top-level children in the `IteratedDataSnapshot`.
+     *
+     * Because of the way JavaScript objects work, the ordering of data in the
+     * JavaScript object returned by `val()` is not guaranteed to match the
+     * ordering on the server nor the ordering of `onChildAdded()` events. That is
+     * where `forEach()` comes in handy. It guarantees the children of a
+     * `DataSnapshot` will be iterated in their query order.
+     *
+     * If no explicit `orderBy*()` method is used, results are returned
+     * ordered by key (unless priorities are used, in which case, results are
+     * returned by priority).
+     *
+     * @param action - A function that will be called for each child DataSnapshot.
+     * The callback can return true to cancel further enumeration.
+     * @returns true if enumeration was canceled due to your callback returning
+     * true.
+     */
+    forEach(action: (child: IteratedDataSnapshot) => boolean | void): boolean;
+    /**
+     * Returns true if the specified child path has (non-null) data.
+     *
+     * @param path - A relative path to the location of a potential child.
+     * @returns `true` if data exists at the specified child path; else
+     *  `false`.
+     */
+    hasChild(path: string): boolean;
+    /**
+     * Returns whether or not the `DataSnapshot` has any non-`null` child
+     * properties.
+     *
+     * You can use `hasChildren()` to determine if a `DataSnapshot` has any
+     * children. If it does, you can enumerate them using `forEach()`. If it
+     * doesn't, then either this snapshot contains a primitive value (which can be
+     * retrieved with `val()`) or it is empty (in which case, `val()` will return
+     * `null`).
+     *
+     * @returns true if this snapshot has any children; else false.
+     */
+    hasChildren(): boolean;
+    /**
+     * Returns a JSON-serializable representation of this object.
+     */
+    toJSON(): object | null;
+    /**
+     * Extracts a JavaScript value from a `DataSnapshot`.
+     *
+     * Depending on the data in a `DataSnapshot`, the `val()` method may return a
+     * scalar type (string, number, or boolean), an array, or an object. It may
+     * also return null, indicating that the `DataSnapshot` is empty (contains no
+     * data).
+     *
+     * @returns The DataSnapshot's contents as a JavaScript value (Object,
+     *   Array, string, number, boolean, or `null`).
+     */
+    val(): any;
+}
+/**
+ * Represents a child snapshot of a `Reference` that is being iterated over. The key will never be undefined.
+ */
+export interface IteratedDataSnapshot extends DataSnapshot {
+    key: string;
+}
+/**
+ *
+ * Returns a `Reference` representing the location in the Database
+ * corresponding to the provided path. If no path is provided, the `Reference`
+ * will point to the root of the Database.
+ *
+ * @param db - The database instance to obtain a reference for.
+ * @param path - Optional path representing the location the returned
+ *   `Reference` will point. If not provided, the returned `Reference` will
+ *   point to the root of the Database.
+ * @returns If a path is provided, a `Reference`
+ *   pointing to the provided path. Otherwise, a `Reference` pointing to the
+ *   root of the Database.
+ */
+export declare function ref(db: Database, path?: string): DatabaseReference;
+/**
+ * Returns a `Reference` representing the location in the Database
+ * corresponding to the provided Firebase URL.
+ *
+ * An exception is thrown if the URL is not a valid Firebase Database URL or it
+ * has a different domain than the current `Database` instance.
+ *
+ * Note that all query parameters (`orderBy`, `limitToLast`, etc.) are ignored
+ * and are not applied to the returned `Reference`.
+ *
+ * @param db - The database instance to obtain a reference for.
+ * @param url - The Firebase URL at which the returned `Reference` will
+ *   point.
+ * @returns A `Reference` pointing to the provided
+ *   Firebase URL.
+ */
+export declare function refFromURL(db: Database, url: string): DatabaseReference;
+/**
+ * Gets a `Reference` for the location at the specified relative path.
+ *
+ * The relative path can either be a simple child name (for example, "ada") or
+ * a deeper slash-separated path (for example, "ada/name/first").
+ *
+ * @param parent - The parent location.
+ * @param path - A relative path from this location to the desired child
+ *   location.
+ * @returns The specified child location.
+ */
+export declare function child(parent: DatabaseReference, path: string): DatabaseReference;
+/**
+ * Returns an `OnDisconnect` object - see
+ * {@link https://firebase.google.com/docs/database/web/offline-capabilities | Enabling Offline Capabilities in JavaScript}
+ * for more information on how to use it.
+ *
+ * @param ref - The reference to add OnDisconnect triggers for.
+ */
+export declare function onDisconnect(ref: DatabaseReference): OnDisconnect;
+export interface ThenableReferenceImpl extends ReferenceImpl, Pick<Promise<ReferenceImpl>, 'then' | 'catch'> {
+    key: string;
+    parent: ReferenceImpl;
+}
+/**
+ * Generates a new child location using a unique key and returns its
+ * `Reference`.
+ *
+ * This is the most common pattern for adding data to a collection of items.
+ *
+ * If you provide a value to `push()`, the value is written to the
+ * generated location. If you don't pass a value, nothing is written to the
+ * database and the child remains empty (but you can use the `Reference`
+ * elsewhere).
+ *
+ * The unique keys generated by `push()` are ordered by the current time, so the
+ * resulting list of items is chronologically sorted. The keys are also
+ * designed to be unguessable (they contain 72 random bits of entropy).
+ *
+ * See {@link https://firebase.google.com/docs/database/web/lists-of-data#append_to_a_list_of_data | Append to a list of data}.
+ * See {@link https://firebase.googleblog.com/2015/02/the-2120-ways-to-ensure-unique_68.html | The 2^120 Ways to Ensure Unique Identifiers}.
+ *
+ * @param parent - The parent location.
+ * @param value - Optional value to be written at the generated location.
+ * @returns Combined `Promise` and `Reference`; resolves when write is complete,
+ * but can be used immediately as the `Reference` to the child location.
+ */
+export declare function push(parent: DatabaseReference, value?: unknown): ThenableReference;
+/**
+ * Removes the data at this Database location.
+ *
+ * Any data at child locations will also be deleted.
+ *
+ * The effect of the remove will be visible immediately and the corresponding
+ * event 'value' will be triggered. Synchronization of the remove to the
+ * Firebase servers will also be started, and the returned Promise will resolve
+ * when complete. If provided, the onComplete callback will be called
+ * asynchronously after synchronization has finished.
+ *
+ * @param ref - The location to remove.
+ * @returns Resolves when remove on server is complete.
+ */
+export declare function remove(ref: DatabaseReference): Promise<void>;
+/**
+ * Writes data to this Database location.
+ *
+ * This will overwrite any data at this location and all child locations.
+ *
+ * The effect of the write will be visible immediately, and the corresponding
+ * events ("value", "child_added", etc.) will be triggered. Synchronization of
+ * the data to the Firebase servers will also be started, and the returned
+ * Promise will resolve when complete. If provided, the `onComplete` callback
+ * will be called asynchronously after synchronization has finished.
+ *
+ * Passing `null` for the new value is equivalent to calling `remove()`; namely,
+ * all data at this location and all child locations will be deleted.
+ *
+ * `set()` will remove any priority stored at this location, so if priority is
+ * meant to be preserved, you need to use `setWithPriority()` instead.
+ *
+ * Note that modifying data with `set()` will cancel any pending transactions
+ * at that location, so extreme care should be taken if mixing `set()` and
+ * `transaction()` to modify the same data.
+ *
+ * A single `set()` will generate a single "value" event at the location where
+ * the `set()` was performed.
+ *
+ * @param ref - The location to write to.
+ * @param value - The value to be written (string, number, boolean, object,
+ *   array, or null).
+ * @returns Resolves when write to server is complete.
+ */
+export declare function set(ref: DatabaseReference, value: unknown): Promise<void>;
+/**
+ * Sets a priority for the data at this Database location.
+ *
+ * Applications need not use priority but can order collections by
+ * ordinary properties (see
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}
+ * ).
+ *
+ * @param ref - The location to write to.
+ * @param priority - The priority to be written (string, number, or null).
+ * @returns Resolves when write to server is complete.
+ */
+export declare function setPriority(ref: DatabaseReference, priority: string | number | null): Promise<void>;
+/**
+ * Writes data the Database location. Like `set()` but also specifies the
+ * priority for that data.
+ *
+ * Applications need not use priority but can order collections by
+ * ordinary properties (see
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sorting_and_filtering_data | Sorting and filtering data}
+ * ).
+ *
+ * @param ref - The location to write to.
+ * @param value - The value to be written (string, number, boolean, object,
+ *   array, or null).
+ * @param priority - The priority to be written (string, number, or null).
+ * @returns Resolves when write to server is complete.
+ */
+export declare function setWithPriority(ref: DatabaseReference, value: unknown, priority: string | number | null): Promise<void>;
+/**
+ * Writes multiple values to the Database at once.
+ *
+ * The `values` argument contains multiple property-value pairs that will be
+ * written to the Database together. Each child property can either be a simple
+ * property (for example, "name") or a relative path (for example,
+ * "name/first") from the current location to the data to update.
+ *
+ * As opposed to the `set()` method, `update()` can be use to selectively update
+ * only the referenced properties at the current location (instead of replacing
+ * all the child properties at the current location).
+ *
+ * The effect of the write will be visible immediately, and the corresponding
+ * events ('value', 'child_added', etc.) will be triggered. Synchronization of
+ * the data to the Firebase servers will also be started, and the returned
+ * Promise will resolve when complete. If provided, the `onComplete` callback
+ * will be called asynchronously after synchronization has finished.
+ *
+ * A single `update()` will generate a single "value" event at the location
+ * where the `update()` was performed, regardless of how many children were
+ * modified.
+ *
+ * Note that modifying data with `update()` will cancel any pending
+ * transactions at that location, so extreme care should be taken if mixing
+ * `update()` and `transaction()` to modify the same data.
+ *
+ * Passing `null` to `update()` will remove the data at this location.
+ *
+ * See
+ * {@link https://firebase.googleblog.com/2015/09/introducing-multi-location-updates-and_86.html | Introducing multi-location updates and more}.
+ *
+ * @param ref - The location to write to.
+ * @param values - Object containing multiple values.
+ * @returns Resolves when update on server is complete.
+ */
+export declare function update(ref: DatabaseReference, values: object): Promise<void>;
+/**
+ * Gets the most up-to-date result for this query.
+ *
+ * @param query - The query to run.
+ * @returns A `Promise` which resolves to the resulting DataSnapshot if a value is
+ * available, or rejects if the client is unable to return a value (e.g., if the
+ * server is unreachable and there is nothing cached).
+ */
+export declare function get(query: Query): Promise<DataSnapshot>;
+/**
+ * Represents registration for 'value' events.
+ */
+export declare class ValueEventRegistration implements EventRegistration {
+    private callbackContext;
+    constructor(callbackContext: CallbackContext);
+    respondsTo(eventType: string): boolean;
+    createEvent(change: Change, query: QueryContext): DataEvent;
+    getEventRunner(eventData: CancelEvent | DataEvent): () => void;
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    matches(other: EventRegistration): boolean;
+    hasAnyCallback(): boolean;
+}
+/**
+ * Represents the registration of a child_x event.
+ */
+export declare class ChildEventRegistration implements EventRegistration {
+    private eventType;
+    private callbackContext;
+    constructor(eventType: string, callbackContext: CallbackContext | null);
+    respondsTo(eventType: string): boolean;
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    createEvent(change: Change, query: QueryContext): DataEvent;
+    getEventRunner(eventData: CancelEvent | DataEvent): () => void;
+    matches(other: EventRegistration): boolean;
+    hasAnyCallback(): boolean;
+}
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onValue` event will trigger once with the initial data stored at this
+ * location, and then trigger again each time the data changes. The
+ * `DataSnapshot` passed to the callback will be for the location at which
+ * `on()` was called. It won't trigger until the entire contents has been
+ * synchronized. If the location has no data, it will be triggered with an empty
+ * `DataSnapshot` (`val()` will return `null`).
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs. The
+ * callback will be passed a DataSnapshot.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onValue(query: Query, callback: (snapshot: DataSnapshot) => unknown, cancelCallback?: (error: Error) => unknown): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onValue` event will trigger once with the initial data stored at this
+ * location, and then trigger again each time the data changes. The
+ * `DataSnapshot` passed to the callback will be for the location at which
+ * `on()` was called. It won't trigger until the entire contents has been
+ * synchronized. If the location has no data, it will be triggered with an empty
+ * `DataSnapshot` (`val()` will return `null`).
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs. The
+ * callback will be passed a DataSnapshot.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onValue(query: Query, callback: (snapshot: DataSnapshot) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onValue` event will trigger once with the initial data stored at this
+ * location, and then trigger again each time the data changes. The
+ * `DataSnapshot` passed to the callback will be for the location at which
+ * `on()` was called. It won't trigger until the entire contents has been
+ * synchronized. If the location has no data, it will be triggered with an empty
+ * `DataSnapshot` (`val()` will return `null`).
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs. The
+ * callback will be passed a DataSnapshot.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onValue(query: Query, callback: (snapshot: DataSnapshot) => unknown, cancelCallback: (error: Error) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildAdded` event will be triggered once for each initial child at this
+ * location, and it will be triggered again every time a new child is added. The
+ * `DataSnapshot` passed into the callback will reflect the data for the
+ * relevant child. For ordering purposes, it is passed a second argument which
+ * is a string containing the key of the previous sibling child by sort order,
+ * or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildAdded(query: Query, callback: (snapshot: DataSnapshot, previousChildName?: string | null) => unknown, cancelCallback?: (error: Error) => unknown): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildAdded` event will be triggered once for each initial child at this
+ * location, and it will be triggered again every time a new child is added. The
+ * `DataSnapshot` passed into the callback will reflect the data for the
+ * relevant child. For ordering purposes, it is passed a second argument which
+ * is a string containing the key of the previous sibling child by sort order,
+ * or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildAdded(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildAdded` event will be triggered once for each initial child at this
+ * location, and it will be triggered again every time a new child is added. The
+ * `DataSnapshot` passed into the callback will reflect the data for the
+ * relevant child. For ordering purposes, it is passed a second argument which
+ * is a string containing the key of the previous sibling child by sort order,
+ * or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildAdded(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, cancelCallback: (error: Error) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildChanged` event will be triggered when the data stored in a child
+ * (or any of its descendants) changes. Note that a single `child_changed` event
+ * may represent multiple changes to the child. The `DataSnapshot` passed to the
+ * callback will contain the new child contents. For ordering purposes, the
+ * callback is also passed a second argument which is a string containing the
+ * key of the previous sibling child by sort order, or `null` if it is the first
+ * child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildChanged(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, cancelCallback?: (error: Error) => unknown): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildChanged` event will be triggered when the data stored in a child
+ * (or any of its descendants) changes. Note that a single `child_changed` event
+ * may represent multiple changes to the child. The `DataSnapshot` passed to the
+ * callback will contain the new child contents. For ordering purposes, the
+ * callback is also passed a second argument which is a string containing the
+ * key of the previous sibling child by sort order, or `null` if it is the first
+ * child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildChanged(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildChanged` event will be triggered when the data stored in a child
+ * (or any of its descendants) changes. Note that a single `child_changed` event
+ * may represent multiple changes to the child. The `DataSnapshot` passed to the
+ * callback will contain the new child contents. For ordering purposes, the
+ * callback is also passed a second argument which is a string containing the
+ * key of the previous sibling child by sort order, or `null` if it is the first
+ * child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildChanged(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, cancelCallback: (error: Error) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildMoved` event will be triggered when a child's sort order changes
+ * such that its position relative to its siblings changes. The `DataSnapshot`
+ * passed to the callback will be for the data of the child that has moved. It
+ * is also passed a second argument which is a string containing the key of the
+ * previous sibling child by sort order, or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildMoved(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, cancelCallback?: (error: Error) => unknown): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildMoved` event will be triggered when a child's sort order changes
+ * such that its position relative to its siblings changes. The `DataSnapshot`
+ * passed to the callback will be for the data of the child that has moved. It
+ * is also passed a second argument which is a string containing the key of the
+ * previous sibling child by sort order, or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildMoved(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildMoved` event will be triggered when a child's sort order changes
+ * such that its position relative to its siblings changes. The `DataSnapshot`
+ * passed to the callback will be for the data of the child that has moved. It
+ * is also passed a second argument which is a string containing the key of the
+ * previous sibling child by sort order, or `null` if it is the first child.
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildMoved(query: Query, callback: (snapshot: DataSnapshot, previousChildName: string | null) => unknown, cancelCallback: (error: Error) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildRemoved` event will be triggered once every time a child is
+ * removed. The `DataSnapshot` passed into the callback will be the old data for
+ * the child that was removed. A child will get removed when either:
+ *
+ * - a client explicitly calls `remove()` on that child or one of its ancestors
+ * - a client calls `set(null)` on that child or one of its ancestors
+ * - that child has all of its children removed
+ * - there is a query in effect which now filters out the child (because it's
+ *   sort order changed or the max limit was hit)
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildRemoved(query: Query, callback: (snapshot: DataSnapshot) => unknown, cancelCallback?: (error: Error) => unknown): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildRemoved` event will be triggered once every time a child is
+ * removed. The `DataSnapshot` passed into the callback will be the old data for
+ * the child that was removed. A child will get removed when either:
+ *
+ * - a client explicitly calls `remove()` on that child or one of its ancestors
+ * - a client calls `set(null)` on that child or one of its ancestors
+ * - that child has all of its children removed
+ * - there is a query in effect which now filters out the child (because it's
+ *   sort order changed or the max limit was hit)
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildRemoved(query: Query, callback: (snapshot: DataSnapshot) => unknown, options: ListenOptions): Unsubscribe;
+/**
+ * Listens for data changes at a particular location.
+ *
+ * This is the primary way to read data from a Database. Your callback
+ * will be triggered for the initial data and again whenever the data changes.
+ * Invoke the returned unsubscribe callback to stop receiving updates. See
+ * {@link https://firebase.google.com/docs/database/web/retrieve-data | Retrieve Data on the Web}
+ * for more details.
+ *
+ * An `onChildRemoved` event will be triggered once every time a child is
+ * removed. The `DataSnapshot` passed into the callback will be the old data for
+ * the child that was removed. A child will get removed when either:
+ *
+ * - a client explicitly calls `remove()` on that child or one of its ancestors
+ * - a client calls `set(null)` on that child or one of its ancestors
+ * - that child has all of its children removed
+ * - there is a query in effect which now filters out the child (because it's
+ *   sort order changed or the max limit was hit)
+ *
+ * @param query - The query to run.
+ * @param callback - A callback that fires when the specified event occurs.
+ * The callback will be passed a DataSnapshot and a string containing the key of
+ * the previous child, by sort order, or `null` if it is the first child.
+ * @param cancelCallback - An optional callback that will be notified if your
+ * event subscription is ever canceled because your client does not have
+ * permission to read this data (or it had permission but has now lost it).
+ * This callback will be passed an `Error` object indicating why the failure
+ * occurred.
+ * @param options - An object that can be used to configure `onlyOnce`, which
+ * then removes the listener after its first invocation.
+ * @returns A function that can be invoked to remove the listener.
+ */
+export declare function onChildRemoved(query: Query, callback: (snapshot: DataSnapshot) => unknown, cancelCallback: (error: Error) => unknown, options: ListenOptions): Unsubscribe;
+export { EventType };
+/**
+ * Detaches a callback previously attached with the corresponding `on*()` (`onValue`, `onChildAdded`) listener.
+ * Note: This is not the recommended way to remove a listener. Instead, please use the returned callback function from
+ * the respective `on*` callbacks.
+ *
+ * Detach a callback previously attached with `on*()`. Calling `off()` on a parent listener
+ * will not automatically remove listeners registered on child nodes, `off()`
+ * must also be called on any child listeners to remove the callback.
+ *
+ * If a callback is not specified, all callbacks for the specified eventType
+ * will be removed. Similarly, if no eventType is specified, all callbacks
+ * for the `Reference` will be removed.
+ *
+ * Individual listeners can also be removed by invoking their unsubscribe
+ * callbacks.
+ *
+ * @param query - The query that the listener was registered with.
+ * @param eventType - One of the following strings: "value", "child_added",
+ * "child_changed", "child_removed", or "child_moved." If omitted, all callbacks
+ * for the `Reference` will be removed.
+ * @param callback - The callback function that was passed to `on()` or
+ * `undefined` to remove all callbacks.
+ */
+export declare function off(query: Query, eventType?: EventType, callback?: (snapshot: DataSnapshot, previousChildName?: string | null) => unknown): void;
+/** Describes the different query constraints available in this SDK. */
+export type QueryConstraintType = 'endAt' | 'endBefore' | 'startAt' | 'startAfter' | 'limitToFirst' | 'limitToLast' | 'orderByChild' | 'orderByKey' | 'orderByPriority' | 'orderByValue' | 'equalTo';
+/**
+ * A `QueryConstraint` is used to narrow the set of documents returned by a
+ * Database query. `QueryConstraint`s are created by invoking {@link endAt},
+ * {@link endBefore}, {@link startAt}, {@link startAfter}, {@link
+ * limitToFirst}, {@link limitToLast}, {@link orderByChild},
+ * {@link orderByChild}, {@link orderByKey} , {@link orderByPriority} ,
+ * {@link orderByValue}  or {@link equalTo} and
+ * can then be passed to {@link query} to create a new query instance that
+ * also contains this `QueryConstraint`.
+ */
+export declare abstract class QueryConstraint {
+    /** The type of this query constraints */
+    abstract readonly type: QueryConstraintType;
+    /**
+     * Takes the provided `Query` and returns a copy of the `Query` with this
+     * `QueryConstraint` applied.
+     */
+    abstract _apply<T>(query: QueryImpl): QueryImpl;
+}
+/**
+ * Creates a `QueryConstraint` with the specified ending point.
+ *
+ * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
+ * allows you to choose arbitrary starting and ending points for your queries.
+ *
+ * The ending point is inclusive, so children with exactly the specified value
+ * will be included in the query. The optional key argument can be used to
+ * further limit the range of the query. If it is specified, then children that
+ * have exactly the specified value must also have a key name less than or equal
+ * to the specified key.
+ *
+ * You can read more about `endAt()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
+ *
+ * @param value - The value to end at. The argument type depends on which
+ * `orderBy*()` function was used in this query. Specify a value that matches
+ * the `orderBy*()` type. When used in combination with `orderByKey()`, the
+ * value must be a string.
+ * @param key - The child key to end at, among the children with the previously
+ * specified priority. This argument is only allowed if ordering by child,
+ * value, or priority.
+ */
+export declare function endAt(value: number | string | boolean | null, key?: string): QueryConstraint;
+/**
+ * Creates a `QueryConstraint` with the specified ending point (exclusive).
+ *
+ * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
+ * allows you to choose arbitrary starting and ending points for your queries.
+ *
+ * The ending point is exclusive. If only a value is provided, children
+ * with a value less than the specified value will be included in the query.
+ * If a key is specified, then children must have a value less than or equal
+ * to the specified value and a key name less than the specified key.
+ *
+ * @param value - The value to end before. The argument type depends on which
+ * `orderBy*()` function was used in this query. Specify a value that matches
+ * the `orderBy*()` type. When used in combination with `orderByKey()`, the
+ * value must be a string.
+ * @param key - The child key to end before, among the children with the
+ * previously specified priority. This argument is only allowed if ordering by
+ * child, value, or priority.
+ */
+export declare function endBefore(value: number | string | boolean | null, key?: string): QueryConstraint;
+/**
+ * Creates a `QueryConstraint` with the specified starting point.
+ *
+ * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
+ * allows you to choose arbitrary starting and ending points for your queries.
+ *
+ * The starting point is inclusive, so children with exactly the specified value
+ * will be included in the query. The optional key argument can be used to
+ * further limit the range of the query. If it is specified, then children that
+ * have exactly the specified value must also have a key name greater than or
+ * equal to the specified key.
+ *
+ * You can read more about `startAt()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
+ *
+ * @param value - The value to start at. The argument type depends on which
+ * `orderBy*()` function was used in this query. Specify a value that matches
+ * the `orderBy*()` type. When used in combination with `orderByKey()`, the
+ * value must be a string.
+ * @param key - The child key to start at. This argument is only allowed if
+ * ordering by child, value, or priority.
+ */
+export declare function startAt(value?: number | string | boolean | null, key?: string): QueryConstraint;
+/**
+ * Creates a `QueryConstraint` with the specified starting point (exclusive).
+ *
+ * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
+ * allows you to choose arbitrary starting and ending points for your queries.
+ *
+ * The starting point is exclusive. If only a value is provided, children
+ * with a value greater than the specified value will be included in the query.
+ * If a key is specified, then children must have a value greater than or equal
+ * to the specified value and a a key name greater than the specified key.
+ *
+ * @param value - The value to start after. The argument type depends on which
+ * `orderBy*()` function was used in this query. Specify a value that matches
+ * the `orderBy*()` type. When used in combination with `orderByKey()`, the
+ * value must be a string.
+ * @param key - The child key to start after. This argument is only allowed if
+ * ordering by child, value, or priority.
+ */
+export declare function startAfter(value: number | string | boolean | null, key?: string): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that if limited to the first specific number
+ * of children.
+ *
+ * The `limitToFirst()` method is used to set a maximum number of children to be
+ * synced for a given callback. If we set a limit of 100, we will initially only
+ * receive up to 100 `child_added` events. If we have fewer than 100 messages
+ * stored in our Database, a `child_added` event will fire for each message.
+ * However, if we have over 100 messages, we will only receive a `child_added`
+ * event for the first 100 ordered messages. As items change, we will receive
+ * `child_removed` events for each item that drops out of the active list so
+ * that the total number stays at 100.
+ *
+ * You can read more about `limitToFirst()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
+ *
+ * @param limit - The maximum number of nodes to include in this query.
+ */
+export declare function limitToFirst(limit: number): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that is limited to return only the last
+ * specified number of children.
+ *
+ * The `limitToLast()` method is used to set a maximum number of children to be
+ * synced for a given callback. If we set a limit of 100, we will initially only
+ * receive up to 100 `child_added` events. If we have fewer than 100 messages
+ * stored in our Database, a `child_added` event will fire for each message.
+ * However, if we have over 100 messages, we will only receive a `child_added`
+ * event for the last 100 ordered messages. As items change, we will receive
+ * `child_removed` events for each item that drops out of the active list so
+ * that the total number stays at 100.
+ *
+ * You can read more about `limitToLast()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
+ *
+ * @param limit - The maximum number of nodes to include in this query.
+ */
+export declare function limitToLast(limit: number): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that orders by the specified child key.
+ *
+ * Queries can only order by one key at a time. Calling `orderByChild()`
+ * multiple times on the same query is an error.
+ *
+ * Firebase queries allow you to order your data by any child key on the fly.
+ * However, if you know in advance what your indexes will be, you can define
+ * them via the .indexOn rule in your Security Rules for better performance. See
+ * the{@link https://firebase.google.com/docs/database/security/indexing-data}
+ * rule for more information.
+ *
+ * You can read more about `orderByChild()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
+ *
+ * @param path - The path to order by.
+ */
+export declare function orderByChild(path: string): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that orders by the key.
+ *
+ * Sorts the results of a query by their (ascending) key values.
+ *
+ * You can read more about `orderByKey()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
+ */
+export declare function orderByKey(): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that orders by priority.
+ *
+ * Applications need not use priority but can order collections by
+ * ordinary properties (see
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}
+ * for alternatives to priority.
+ */
+export declare function orderByPriority(): QueryConstraint;
+/**
+ * Creates a new `QueryConstraint` that orders by value.
+ *
+ * If the children of a query are all scalar values (string, number, or
+ * boolean), you can order the results by their (ascending) values.
+ *
+ * You can read more about `orderByValue()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#sort_data | Sort data}.
+ */
+export declare function orderByValue(): QueryConstraint;
+/**
+ * Creates a `QueryConstraint` that includes children that match the specified
+ * value.
+ *
+ * Using `startAt()`, `startAfter()`, `endBefore()`, `endAt()` and `equalTo()`
+ * allows you to choose arbitrary starting and ending points for your queries.
+ *
+ * The optional key argument can be used to further limit the range of the
+ * query. If it is specified, then children that have exactly the specified
+ * value must also have exactly the specified key as their key name. This can be
+ * used to filter result sets with many matches for the same value.
+ *
+ * You can read more about `equalTo()` in
+ * {@link https://firebase.google.com/docs/database/web/lists-of-data#filtering_data | Filtering data}.
+ *
+ * @param value - The value to match for. The argument type depends on which
+ * `orderBy*()` function was used in this query. Specify a value that matches
+ * the `orderBy*()` type. When used in combination with `orderByKey()`, the
+ * value must be a string.
+ * @param key - The child key to start at, among the children with the
+ * previously specified priority. This argument is only allowed if ordering by
+ * child, value, or priority.
+ */
+export declare function equalTo(value: number | string | boolean | null, key?: string): QueryConstraint;
+/**
+ * Creates a new immutable instance of `Query` that is extended to also include
+ * additional query constraints.
+ *
+ * @param query - The Query instance to use as a base for the new constraints.
+ * @param queryConstraints - The list of `QueryConstraint`s to apply.
+ * @throws if any of the provided query constraints cannot be combined with the
+ * existing or new constraints.
+ */
+export declare function query(query: Query, ...queryConstraints: QueryConstraint[]): Query;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/ServerValue.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/ServerValue.d.ts
new file mode 100644
index 0000000..d1a9a4b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/ServerValue.d.ts
@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Returns a placeholder value for auto-populating the current timestamp (time
+ * since the Unix epoch, in milliseconds) as determined by the Firebase
+ * servers.
+ */
+export declare function serverTimestamp(): object;
+/**
+ * Returns a placeholder value that can be used to atomically increment the
+ * current database value by the provided delta.
+ *
+ * @param delta - the amount to modify the current value atomically.
+ * @returns A placeholder value for modifying data atomically server-side.
+ */
+export declare function increment(delta: number): object;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/Transaction.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/Transaction.d.ts
new file mode 100644
index 0000000..bd69015
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/Transaction.d.ts
@@ -0,0 +1,83 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { DatabaseReference } from './Reference';
+import { DataSnapshot } from './Reference_impl';
+/** An options object to configure transactions. */
+export interface TransactionOptions {
+    /**
+     * By default, events are raised each time the transaction update function
+     * runs. So if it is run multiple times, you may see intermediate states. You
+     * can set this to false to suppress these intermediate states and instead
+     * wait until the transaction has completed before events are raised.
+     */
+    readonly applyLocally?: boolean;
+}
+/**
+ * A type for the resolve value of {@link runTransaction}.
+ */
+export declare class TransactionResult {
+    /** Whether the transaction was successfully committed. */
+    readonly committed: boolean;
+    /** The resulting data snapshot. */
+    readonly snapshot: DataSnapshot;
+    /** @hideconstructor */
+    constructor(
+    /** Whether the transaction was successfully committed. */
+    committed: boolean, 
+    /** The resulting data snapshot. */
+    snapshot: DataSnapshot);
+    /** Returns a JSON-serializable representation of this object. */
+    toJSON(): object;
+}
+/**
+ * Atomically modifies the data at this location.
+ *
+ * Atomically modify the data at this location. Unlike a normal `set()`, which
+ * just overwrites the data regardless of its previous value, `runTransaction()` is
+ * used to modify the existing value to a new value, ensuring there are no
+ * conflicts with other clients writing to the same location at the same time.
+ *
+ * To accomplish this, you pass `runTransaction()` an update function which is
+ * used to transform the current value into a new value. If another client
+ * writes to the location before your new value is successfully written, your
+ * update function will be called again with the new current value, and the
+ * write will be retried. This will happen repeatedly until your write succeeds
+ * without conflict or you abort the transaction by not returning a value from
+ * your update function.
+ *
+ * Note: Modifying data with `set()` will cancel any pending transactions at
+ * that location, so extreme care should be taken if mixing `set()` and
+ * `runTransaction()` to update the same data.
+ *
+ * Note: When using transactions with Security and Firebase Rules in place, be
+ * aware that a client needs `.read` access in addition to `.write` access in
+ * order to perform a transaction. This is because the client-side nature of
+ * transactions requires the client to read the data in order to transactionally
+ * update it.
+ *
+ * @param ref - The location to atomically modify.
+ * @param transactionUpdate - A developer-supplied function which will be passed
+ * the current data stored at this location (as a JavaScript object). The
+ * function should return the new value it would like written (as a JavaScript
+ * object). If `undefined` is returned (i.e. you return with no arguments) the
+ * transaction will be aborted and the data at this location will not be
+ * modified.
+ * @param options - An options object to configure transactions.
+ * @returns A `Promise` that can optionally be used instead of the `onComplete`
+ * callback to handle success and failure.
+ */
+export declare function runTransaction(ref: DatabaseReference, transactionUpdate: (currentData: any) => unknown, options?: TransactionOptions): Promise<TransactionResult>;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/api/test_access.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/api/test_access.d.ts
new file mode 100644
index 0000000..839feaa
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/api/test_access.d.ts
@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { PersistentConnection } from '../core/PersistentConnection';
+import { RepoInfo } from '../core/RepoInfo';
+import { Connection } from '../realtime/Connection';
+export declare const DataConnection: typeof PersistentConnection;
+export declare const RealTimeConnection: typeof Connection;
+/**
+ * @internal
+ */
+export declare const hijackHash: (newHash: () => string) => () => void;
+export declare const ConnectionTarget: typeof RepoInfo;
+/**
+ * Forces the RepoManager to create Repos that use ReadonlyRestClient instead of PersistentConnection.
+ * @internal
+ */
+export declare const forceRestClient: (forceRestClient: boolean) => void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/AppCheckTokenProvider.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/AppCheckTokenProvider.d.ts
new file mode 100644
index 0000000..5262dd5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/AppCheckTokenProvider.d.ts
@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseApp } from '@firebase/app';
+import { AppCheckInternalComponentName, AppCheckTokenListener, AppCheckTokenResult } from '@firebase/app-check-interop-types';
+import { Provider } from '@firebase/component';
+/**
+ * Abstraction around AppCheck's token fetching capabilities.
+ */
+export declare class AppCheckTokenProvider {
+    private appCheckProvider?;
+    private appCheck?;
+    private serverAppAppCheckToken?;
+    private appName;
+    constructor(app: FirebaseApp, appCheckProvider?: Provider<AppCheckInternalComponentName>);
+    getToken(forceRefresh?: boolean): Promise<AppCheckTokenResult>;
+    addTokenChangeListener(listener: AppCheckTokenListener): void;
+    notifyForInvalidToken(): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/AuthTokenProvider.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/AuthTokenProvider.d.ts
new file mode 100644
index 0000000..5cc81e6
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/AuthTokenProvider.d.ts
@@ -0,0 +1,49 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseAuthTokenData } from '@firebase/app-types/private';
+import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
+import { Provider } from '@firebase/component';
+export interface AuthTokenProvider {
+    getToken(forceRefresh: boolean): Promise<FirebaseAuthTokenData>;
+    addTokenChangeListener(listener: (token: string | null) => void): void;
+    removeTokenChangeListener(listener: (token: string | null) => void): void;
+    notifyForInvalidToken(): void;
+}
+/**
+ * Abstraction around FirebaseApp's token fetching capabilities.
+ */
+export declare class FirebaseAuthTokenProvider implements AuthTokenProvider {
+    private appName_;
+    private firebaseOptions_;
+    private authProvider_;
+    private auth_;
+    constructor(appName_: string, firebaseOptions_: object, authProvider_: Provider<FirebaseAuthInternalName>);
+    getToken(forceRefresh: boolean): Promise<FirebaseAuthTokenData>;
+    addTokenChangeListener(listener: (token: string | null) => void): void;
+    removeTokenChangeListener(listener: (token: string | null) => void): void;
+    notifyForInvalidToken(): void;
+}
+export declare class EmulatorTokenProvider implements AuthTokenProvider {
+    private accessToken;
+    /** A string that is treated as an admin access token by the RTDB emulator. Used by Admin SDK. */
+    static OWNER: string;
+    constructor(accessToken: string);
+    getToken(forceRefresh: boolean): Promise<FirebaseAuthTokenData>;
+    addTokenChangeListener(listener: (token: string | null) => void): void;
+    removeTokenChangeListener(listener: (token: string | null) => void): void;
+    notifyForInvalidToken(): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/CompoundWrite.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/CompoundWrite.d.ts
new file mode 100644
index 0000000..0af422b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/CompoundWrite.d.ts
@@ -0,0 +1,81 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { NamedNode, Node } from './snap/Node';
+import { ImmutableTree } from './util/ImmutableTree';
+import { Path } from './util/Path';
+/**
+ * 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 {
+    writeTree_: ImmutableTree<Node>;
+    constructor(writeTree_: ImmutableTree<Node>);
+    static empty(): CompoundWrite;
+}
+export declare function compoundWriteAddWrite(compoundWrite: CompoundWrite, path: Path, node: Node): CompoundWrite;
+export declare function compoundWriteAddWrites(compoundWrite: CompoundWrite, 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 compoundWrite - The CompoundWrite to remove.
+ * @param path - The path at which a write and all deeper writes should be removed
+ * @returns The new CompoundWrite with the removed path
+ */
+export declare function compoundWriteRemoveWrite(compoundWrite: CompoundWrite, path: Path): CompoundWrite;
+/**
+ * Returns whether this CompoundWrite will fully overwrite a node at a given location and can therefore be
+ * considered "complete".
+ *
+ * @param compoundWrite - The CompoundWrite to check.
+ * @param path - The path to check for
+ * @returns Whether there is a complete write at that path
+ */
+export declare function compoundWriteHasCompleteWrite(compoundWrite: CompoundWrite, 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 compoundWrite - The CompoundWrite to get the node from.
+ * @param path - The path to get a complete write
+ * @returns The node if complete at that path, or null otherwise.
+ */
+export declare function compoundWriteGetCompleteNode(compoundWrite: CompoundWrite, path: Path): Node | null;
+/**
+ * Returns all children that are guaranteed to be a complete overwrite.
+ *
+ * @param compoundWrite - The CompoundWrite to get children from.
+ * @returns A list of all complete children.
+ */
+export declare function compoundWriteGetCompleteChildren(compoundWrite: CompoundWrite): NamedNode[];
+export declare function compoundWriteChildCompoundWrite(compoundWrite: CompoundWrite, path: Path): CompoundWrite;
+/**
+ * Returns true if this CompoundWrite is empty and therefore does not modify any nodes.
+ * @returns Whether this CompoundWrite is empty
+ */
+export declare function compoundWriteIsEmpty(compoundWrite: CompoundWrite): 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
+ * @returns The node with all writes applied
+ */
+export declare function compoundWriteApply(compoundWrite: CompoundWrite, node: Node): Node;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/PersistentConnection.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/PersistentConnection.d.ts
new file mode 100644
index 0000000..1868d90
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/PersistentConnection.d.ts
@@ -0,0 +1,135 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheckTokenProvider } from './AppCheckTokenProvider';
+import { AuthTokenProvider } from './AuthTokenProvider';
+import { RepoInfo } from './RepoInfo';
+import { ServerActions } from './ServerActions';
+import { QueryContext } from './view/EventRegistration';
+/**
+ * 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 applicationId_;
+    private onDataUpdate_;
+    private onConnectStatus_;
+    private onServerInfoUpdate_;
+    private authTokenProvider_;
+    private appCheckTokenProvider_;
+    private authOverride_?;
+    id: number;
+    private log_;
+    private interruptReasons_;
+    private readonly listens;
+    private outstandingPuts_;
+    private outstandingGets_;
+    private outstandingPutCount_;
+    private outstandingGetCount_;
+    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 appCheckToken_;
+    private forceTokenRefresh_;
+    private invalidAuthTokenCount_;
+    private invalidAppCheckTokenCount_;
+    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_;
+    /**
+     * @param repoInfo_ - Data about the namespace we are connecting to
+     * @param applicationId_ - The Firebase App ID for this project
+     * @param onDataUpdate_ - A callback for new data from the server
+     */
+    constructor(repoInfo_: RepoInfo, applicationId_: string, onDataUpdate_: (a: string, b: unknown, c: boolean, d: number | null) => void, onConnectStatus_: (a: boolean) => void, onServerInfoUpdate_: (a: unknown) => void, authTokenProvider_: AuthTokenProvider, appCheckTokenProvider_: AppCheckTokenProvider, authOverride_?: object | null);
+    protected sendRequest(action: string, body: unknown, onResponse?: (a: unknown) => void): void;
+    get(query: QueryContext): Promise<string>;
+    listen(query: QueryContext, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    private sendGet_;
+    private sendListen_;
+    private static warnOnListenWarnings_;
+    refreshAuthToken(token: string): void;
+    private reduceReconnectDelayIfAdminCredential_;
+    refreshAppCheckToken(token: string | null): void;
+    /**
+     * 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;
+    /**
+     * Attempts to authenticate with the given token. If the authentication
+     * attempt fails, it's triggered like the token was revoked (the connection is
+     * closed).
+     */
+    tryAppCheck(): void;
+    /**
+     * @inheritDoc
+     */
+    unlisten(query: QueryContext, tag: number | null): void;
+    private sendUnlisten_;
+    onDisconnectPut(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    onDisconnectMerge(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    onDisconnectCancel(pathString: string, onComplete?: (a: string, b: string) => void): void;
+    private sendOnDisconnect_;
+    put(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void, hash?: string): void;
+    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_;
+    reportStats(stats: {
+        [k: string]: unknown;
+    }): void;
+    private onDataMessage_;
+    private onDataPush_;
+    private onReady_;
+    private scheduleConnect_;
+    private initConnection_;
+    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 onAppCheckRevoked_;
+    private onSecurityDebugPacket_;
+    private restoreState_;
+    /**
+     * Sends client stats for first connection
+     */
+    private sendConnectStats_;
+    private shouldReconnect_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/ReadonlyRestClient.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/ReadonlyRestClient.d.ts
new file mode 100644
index 0000000..28c1710
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/ReadonlyRestClient.d.ts
@@ -0,0 +1,60 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { AppCheckTokenProvider } from './AppCheckTokenProvider';
+import { AuthTokenProvider } from './AuthTokenProvider';
+import { RepoInfo } from './RepoInfo';
+import { ServerActions } from './ServerActions';
+import { QueryContext } from './view/EventRegistration';
+/**
+ * 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_;
+    private appCheckTokenProvider_;
+    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 listens_;
+    static getListenId_(query: QueryContext, tag?: number | null): string;
+    /**
+     * @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, authTokenProvider_: AuthTokenProvider, appCheckTokenProvider_: AppCheckTokenProvider);
+    /** @inheritDoc */
+    listen(query: QueryContext, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    /** @inheritDoc */
+    unlisten(query: QueryContext, tag: number | null): void;
+    get(query: QueryContext): Promise<string>;
+    /** @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.
+     */
+    private restRequest_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/Repo.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/Repo.d.ts
new file mode 100644
index 0000000..6861109
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/Repo.d.ts
@@ -0,0 +1,144 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ValueEventRegistration } from '../api/Reference_impl';
+import { AppCheckTokenProvider } from './AppCheckTokenProvider';
+import { AuthTokenProvider } from './AuthTokenProvider';
+import { PersistentConnection } from './PersistentConnection';
+import { RepoInfo } from './RepoInfo';
+import { ServerActions } from './ServerActions';
+import { Node } from './snap/Node';
+import { SnapshotHolder } from './SnapshotHolder';
+import { SparseSnapshotTree } from './SparseSnapshotTree';
+import { StatsCollection } from './stats/StatsCollection';
+import { StatsListener } from './stats/StatsListener';
+import { StatsReporter } from './stats/StatsReporter';
+import { SyncTree } from './SyncTree';
+import { Indexable } from './util/misc';
+import { Path } from './util/Path';
+import { Tree } from './util/Tree';
+import { EventQueue } from './view/EventQueue';
+import { EventRegistration, QueryContext } from './view/EventRegistration';
+declare const enum TransactionStatus {
+    RUN = 0,
+    SENT = 1,
+    COMPLETED = 2,
+    SENT_NEEDS_ABORT = 3,
+    NEEDS_ABORT = 4
+}
+interface Transaction {
+    path: Path;
+    update: (a: unknown) => unknown;
+    onComplete: (error: Error | null, committed: boolean, node: Node | null) => void;
+    status: TransactionStatus;
+    order: number;
+    applyLocally: boolean;
+    retryCount: number;
+    unwatcher: () => void;
+    abortReason: string | null;
+    currentWriteId: number;
+    currentInputSnapshot: Node | null;
+    currentOutputSnapshotRaw: Node | null;
+    currentOutputSnapshotResolved: Node | null;
+}
+/**
+ * A connection to a single data repository.
+ */
+export declare class Repo {
+    repoInfo_: RepoInfo;
+    forceRestClient_: boolean;
+    authTokenProvider_: AuthTokenProvider;
+    appCheckProvider_: AppCheckTokenProvider;
+    /** Key for uniquely identifying this repo, used in RepoManager */
+    readonly key: string;
+    dataUpdateCount: number;
+    infoSyncTree_: SyncTree;
+    serverSyncTree_: SyncTree;
+    stats_: StatsCollection;
+    statsListener_: StatsListener | null;
+    eventQueue_: EventQueue;
+    nextWriteId_: number;
+    server_: ServerActions;
+    statsReporter_: StatsReporter;
+    infoData_: SnapshotHolder;
+    interceptServerDataCallback_: ((a: string, b: unknown) => void) | null;
+    /** A list of data pieces and paths to be set when this client disconnects. */
+    onDisconnect_: SparseSnapshotTree;
+    /** Stores queues of outstanding transactions for Firebase locations. */
+    transactionQueueTree_: Tree<Transaction[]>;
+    persistentConnection_: PersistentConnection | null;
+    constructor(repoInfo_: RepoInfo, forceRestClient_: boolean, authTokenProvider_: AuthTokenProvider, appCheckProvider_: AppCheckTokenProvider);
+    /**
+     * @returns The URL corresponding to the root of this Firebase.
+     */
+    toString(): string;
+}
+export declare function repoStart(repo: Repo, appId: string, authOverride?: object): void;
+/**
+ * @returns The time in milliseconds, taking the server offset into account if we have one.
+ */
+export declare function repoServerTime(repo: Repo): number;
+/**
+ * Generate ServerValues using some variables from the repo object.
+ */
+export declare function repoGenerateServerValues(repo: Repo): Indexable;
+export declare function repoInterceptServerData(repo: Repo, callback: ((a: string, b: unknown) => unknown) | null): void;
+/**
+ * The purpose of `getValue` is to return the latest known value
+ * satisfying `query`.
+ *
+ * This method will first check for in-memory cached values
+ * belonging to active listeners. If they are found, such values
+ * are considered to be the most up-to-date.
+ *
+ * If the client is not connected, this method will wait until the
+ *  repo has established a connection and then request the value for `query`.
+ * If the client is not able to retrieve the query result for another reason,
+ * it reports an error.
+ *
+ * @param query - The query to surface a value for.
+ */
+export declare function repoGetValue(repo: Repo, query: QueryContext, eventRegistration: ValueEventRegistration): Promise<Node>;
+export declare function repoSetWithPriority(repo: Repo, path: Path, newVal: unknown, newPriority: number | string | null, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoUpdate(repo: Repo, path: Path, childrenToMerge: {
+    [k: string]: unknown;
+}, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoOnDisconnectCancel(repo: Repo, path: Path, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoOnDisconnectSet(repo: Repo, path: Path, value: unknown, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoOnDisconnectSetWithPriority(repo: Repo, path: Path, value: unknown, priority: unknown, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoOnDisconnectUpdate(repo: Repo, path: Path, childrenToMerge: {
+    [k: string]: unknown;
+}, onComplete: ((status: Error | null, errorReason?: string) => void) | null): void;
+export declare function repoAddEventCallbackForQuery(repo: Repo, query: QueryContext, eventRegistration: EventRegistration): void;
+export declare function repoRemoveEventCallbackForQuery(repo: Repo, query: QueryContext, eventRegistration: EventRegistration): void;
+export declare function repoInterrupt(repo: Repo): void;
+export declare function repoResume(repo: Repo): void;
+export declare function repoStats(repo: Repo, showDelta?: boolean): void;
+export declare function repoStatsIncrementCounter(repo: Repo, metric: string): void;
+export declare function repoCallOnCompleteCallback(repo: Repo, callback: ((status: Error | null, errorReason?: string) => void) | null, status: string, errorReason?: string | null): void;
+/**
+ * Creates a new transaction, adds it to the transactions we're tracking, and
+ * sends it to the server if possible.
+ *
+ * @param path - Path at which to do transaction.
+ * @param transactionUpdate - Update callback.
+ * @param onComplete - Completion callback.
+ * @param unwatcher - Function that will be called when the transaction no longer
+ * need data updates for `path`.
+ * @param applyLocally - Whether or not to make intermediate results visible
+ */
+export declare function repoStartTransaction(repo: Repo, path: Path, transactionUpdate: (a: unknown) => unknown, onComplete: ((error: Error, committed: boolean, node: Node) => void) | null, unwatcher: () => void, applyLocally: boolean): void;
+export {};
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/RepoInfo.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/RepoInfo.d.ts
new file mode 100644
index 0000000..4604e86
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/RepoInfo.d.ts
@@ -0,0 +1,61 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { EmulatorMockTokenOptions } from '@firebase/util';
+export interface RepoInfoEmulatorOptions {
+    mockUserToken?: string | EmulatorMockTokenOptions;
+}
+/**
+ * A class that holds metadata about a Repo object
+ */
+export declare class RepoInfo {
+    readonly secure: boolean;
+    readonly namespace: string;
+    readonly webSocketOnly: boolean;
+    readonly nodeAdmin: boolean;
+    readonly persistenceKey: string;
+    readonly includeNamespaceInQueryParams: boolean;
+    readonly isUsingEmulator: boolean;
+    readonly emulatorOptions: RepoInfoEmulatorOptions | null;
+    private _host;
+    private _domain;
+    internalHost: string;
+    /**
+     * @param host - Hostname portion of the url for the repo
+     * @param secure - Whether or not this repo is accessed over ssl
+     * @param namespace - The namespace represented by the repo
+     * @param webSocketOnly - Whether to prefer websockets over all other transports (used by Nest).
+     * @param nodeAdmin - Whether this instance uses Admin SDK credentials
+     * @param persistenceKey - Override the default session persistence storage key
+     */
+    constructor(host: string, secure: boolean, namespace: string, webSocketOnly: boolean, nodeAdmin?: boolean, persistenceKey?: string, includeNamespaceInQueryParams?: boolean, isUsingEmulator?: boolean, emulatorOptions?: RepoInfoEmulatorOptions | null);
+    isCacheableHost(): boolean;
+    isCustomHost(): boolean;
+    get host(): string;
+    set host(newHost: string);
+    toString(): string;
+    toURLString(): string;
+}
+/**
+ * Returns the websocket URL for this repo
+ * @param repoInfo - RepoInfo object
+ * @param type - of connection
+ * @param params - list
+ * @returns The URL for this repo
+ */
+export declare function repoInfoConnectionURL(repoInfo: RepoInfo, type: string, params: {
+    [k: string]: string;
+}): string;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/ServerActions.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/ServerActions.d.ts
new file mode 100644
index 0000000..9f13a86
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/ServerActions.d.ts
@@ -0,0 +1,52 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { QueryContext } from './view/EventRegistration';
+/**
+ * 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 {
+    abstract listen(query: QueryContext, currentHashFn: () => string, tag: number | null, onComplete: (a: string, b: unknown) => void): void;
+    /**
+     * Remove a listen.
+     */
+    abstract unlisten(query: QueryContext, tag: number | null): void;
+    /**
+     * Get the server value satisfying this query.
+     */
+    abstract get(query: QueryContext): Promise<string>;
+    put(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void, hash?: string): void;
+    merge(pathString: string, data: unknown, onComplete: (a: string, b: string | null) => void, hash?: string): void;
+    /**
+     * Refreshes the auth token for the current connection.
+     * @param token - The authentication token
+     */
+    refreshAuthToken(token: string): void;
+    /**
+     * Refreshes the app check token for the current connection.
+     * @param token The app check token
+     */
+    refreshAppCheckToken(token: string): void;
+    onDisconnectPut(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    onDisconnectMerge(pathString: string, data: unknown, onComplete?: (a: string, b: string) => void): void;
+    onDisconnectCancel(pathString: string, onComplete?: (a: string, b: string) => void): void;
+    reportStats(stats: {
+        [k: string]: unknown;
+    }): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/SnapshotHolder.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/SnapshotHolder.d.ts
new file mode 100644
index 0000000..cdd8456
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/SnapshotHolder.d.ts
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from './snap/Node';
+import { Path } from './util/Path';
+/**
+ * Mutable object which basically just stores a reference to the "latest" immutable snapshot.
+ */
+export declare class SnapshotHolder {
+    private rootNode_;
+    getNode(path: Path): Node;
+    updateSnapshot(path: Path, newSnapshotNode: Node): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/SparseSnapshotTree.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/SparseSnapshotTree.d.ts
new file mode 100644
index 0000000..ddd382e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/SparseSnapshotTree.d.ts
@@ -0,0 +1,64 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from './snap/Node';
+import { Path } from './util/Path';
+/**
+ * Helper class to store a sparse set of snapshots.
+ */
+export interface SparseSnapshotTree {
+    value: Node | null;
+    readonly children: Map<string, SparseSnapshotTree>;
+}
+export declare function newSparseSnapshotTree(): SparseSnapshotTree;
+/**
+ * Gets the node stored at the given path if one exists.
+ * Only seems to be used in tests.
+ *
+ * @param path - Path to look up snapshot for.
+ * @returns The retrieved node, or null.
+ */
+export declare function sparseSnapshotTreeFind(sparseSnapshotTree: SparseSnapshotTree, 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.
+ */
+export declare function sparseSnapshotTreeRemember(sparseSnapshotTree: SparseSnapshotTree, path: Path, data: Node): void;
+/**
+ * Purge the data at path from the cache.
+ *
+ * @param path - Path to look up snapshot for.
+ * @returns True if this node should now be removed.
+ */
+export declare function sparseSnapshotTreeForget(sparseSnapshotTree: SparseSnapshotTree, 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.
+ */
+export declare function sparseSnapshotTreeForEachTree(sparseSnapshotTree: SparseSnapshotTree, prefixPath: Path, func: (a: Path, b: Node) => unknown): void;
+/**
+ * Iterates through each immediate child and triggers the callback.
+ * Only seems to be used in tests.
+ *
+ * @param func - The function to invoke for each child.
+ */
+export declare function sparseSnapshotTreeForEachChild(sparseSnapshotTree: SparseSnapshotTree, func: (a: string, b: SparseSnapshotTree) => void): void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/SyncPoint.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/SyncPoint.d.ts
new file mode 100644
index 0000000..b6b4daf
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/SyncPoint.d.ts
@@ -0,0 +1,91 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ReferenceConstructor } from '../api/Reference';
+import { Operation } from './operation/Operation';
+import { Node } from './snap/Node';
+import { Path } from './util/Path';
+import { Event } from './view/Event';
+import { EventRegistration, QueryContext } from './view/EventRegistration';
+import { View } from './view/View';
+import { WriteTreeRef } from './WriteTree';
+/**
+ * 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 {
+    /**
+     * 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).
+     */
+    readonly views: Map<string, View>;
+}
+export declare function syncPointSetReferenceConstructor(val: ReferenceConstructor): void;
+export declare function syncPointIsEmpty(syncPoint: SyncPoint): boolean;
+export declare function syncPointApplyOperation(syncPoint: SyncPoint, operation: Operation, writesCache: WriteTreeRef, optCompleteServerCache: Node | null): Event[];
+/**
+ * Get a view for the specified query.
+ *
+ * @param query - The query to return a view for
+ * @param writesCache
+ * @param serverCache
+ * @param serverCacheComplete
+ * @returns Events to raise.
+ */
+export declare function syncPointGetView(syncPoint: SyncPoint, query: QueryContext, writesCache: WriteTreeRef, serverCache: Node | null, serverCacheComplete: boolean): View;
+/**
+ * Add an event callback for the specified query.
+ *
+ * @param query
+ * @param eventRegistration
+ * @param writesCache
+ * @param serverCache - Complete server cache, if we have it.
+ * @param serverCacheComplete
+ * @returns Events to raise.
+ */
+export declare function syncPointAddEventRegistration(syncPoint: SyncPoint, query: QueryContext, 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 eventRegistration - If null, remove all callbacks.
+ * @param cancelError - If a cancelError is provided, appropriate cancel events will be returned.
+ * @returns removed queries and any cancel events
+ */
+export declare function syncPointRemoveEventRegistration(syncPoint: SyncPoint, query: QueryContext, eventRegistration: EventRegistration | null, cancelError?: Error): {
+    removed: QueryContext[];
+    events: Event[];
+};
+export declare function syncPointGetQueryViews(syncPoint: SyncPoint): View[];
+/**
+ * @param path - The path to the desired complete snapshot
+ * @returns A complete cache, if it exists
+ */
+export declare function syncPointGetCompleteServerCache(syncPoint: SyncPoint, path: Path): Node | null;
+export declare function syncPointViewForQuery(syncPoint: SyncPoint, query: QueryContext): View | null;
+export declare function syncPointViewExistsForQuery(syncPoint: SyncPoint, query: QueryContext): boolean;
+export declare function syncPointHasCompleteView(syncPoint: SyncPoint): boolean;
+export declare function syncPointGetCompleteView(syncPoint: SyncPoint): View | null;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/SyncTree.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/SyncTree.d.ts
new file mode 100644
index 0000000..7025a3d
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/SyncTree.d.ts
@@ -0,0 +1,166 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ReferenceConstructor } from '../api/Reference';
+import { Node } from './snap/Node';
+import { SyncPoint } from './SyncPoint';
+import { ImmutableTree } from './util/ImmutableTree';
+import { Path } from './util/Path';
+import { Event } from './view/Event';
+import { EventRegistration, QueryContext } from './view/EventRegistration';
+import { WriteTree } from './WriteTree';
+export declare function syncTreeSetReferenceConstructor(val: ReferenceConstructor): void;
+export interface ListenProvider {
+    startListening(query: QueryContext, tag: number | null, hashFn: () => string, onComplete: (a: string, b?: unknown) => Event[]): Event[];
+    stopListening(a: QueryContext, b: number | null): void;
+}
+export declare function resetSyncTreeTag(): 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.
+ *
+ */
+export declare class SyncTree {
+    listenProvider_: ListenProvider;
+    /**
+     * Tree of SyncPoints.  There's a SyncPoint at any location that has 1 or more views.
+     */
+    syncPointTree_: ImmutableTree<SyncPoint>;
+    /**
+     * A tree of all pending user writes (user-initiated set()'s, transaction()'s, update()'s, etc.).
+     */
+    pendingWriteTree_: WriteTree;
+    readonly tagToQueryMap: Map<number, string>;
+    readonly queryToTagMap: Map<string, number>;
+    /**
+     * @param 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.
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyUserOverwrite(syncTree: SyncTree, path: Path, newData: Node, writeId: number, visible?: boolean): Event[];
+/**
+ * Apply the data from a user-generated update() call
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyUserMerge(syncTree: SyncTree, 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
+ * @returns Events to raise.
+ */
+export declare function syncTreeAckUserWrite(syncTree: SyncTree, writeId: number, revert?: boolean): Event[];
+/**
+ * Apply new server data for the specified path..
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyServerOverwrite(syncTree: SyncTree, path: Path, newData: Node): Event[];
+/**
+ * Apply new server data to be merged in at the specified path.
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyServerMerge(syncTree: SyncTree, path: Path, changedChildren: {
+    [k: string]: Node;
+}): Event[];
+/**
+ * Apply a listen complete for a query
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyListenComplete(syncTree: SyncTree, path: Path): Event[];
+/**
+ * Apply a listen complete for a tagged query
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyTaggedListenComplete(syncTree: SyncTree, path: Path, tag: number): 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.
+ * @param skipListenerDedup - When performing a `get()`, we don't add any new listeners, so no
+ *  deduping needs to take place. This flag allows toggling of that behavior
+ * @returns Cancel events, if cancelError was provided.
+ */
+export declare function syncTreeRemoveEventRegistration(syncTree: SyncTree, query: QueryContext, eventRegistration: EventRegistration | null, cancelError?: Error, skipListenerDedup?: boolean): Event[];
+/**
+ * Apply new server data for the specified tagged query.
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyTaggedQueryOverwrite(syncTree: SyncTree, path: Path, snap: Node, tag: number): Event[];
+/**
+ * Apply server data to be merged in for the specified tagged query.
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeApplyTaggedQueryMerge(syncTree: SyncTree, path: Path, changedChildren: {
+    [k: string]: Node;
+}, tag: number): Event[];
+/**
+ * Add an event callback for the specified query.
+ *
+ * @returns Events to raise.
+ */
+export declare function syncTreeAddEventRegistration(syncTree: SyncTree, query: QueryContext, eventRegistration: EventRegistration, skipSetupListener?: boolean): Event[];
+/**
+ * Returns a complete cache, if we have one, of the data at a particular path. If the location does not have a
+ * listener above it, we will get a false "null". This shouldn't be a problem because transactions will always
+ * have a listener above, and atomic operations would correctly show a jitter of <increment value> ->
+ *     <incremented total> as the write is applied locally and then acknowledged at the server.
+ *
+ * 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
+ */
+export declare function syncTreeCalcCompleteEventCache(syncTree: SyncTree, path: Path, writeIdsToExclude?: number[]): Node;
+export declare function syncTreeGetServerValue(syncTree: SyncTree, query: QueryContext): Node | null;
+/**
+ * Return the tag associated with the given query.
+ */
+export declare function syncTreeTagForQuery(syncTree: SyncTree, query: QueryContext): number | null;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/WriteTree.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/WriteTree.d.ts
new file mode 100644
index 0000000..8b03daa
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/WriteTree.d.ts
@@ -0,0 +1,205 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { CompoundWrite } from './CompoundWrite';
+import { ChildrenNode } from './snap/ChildrenNode';
+import { Index } from './snap/indexes/Index';
+import { NamedNode, Node } from './snap/Node';
+import { Path } from './util/Path';
+import { CacheNode } from './view/CacheNode';
+/**
+ * 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 will 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;
+}
+/**
+ * Create a new WriteTreeRef for the given path. For use with a new sync point at the given path.
+ *
+ */
+export declare function writeTreeChildWrites(writeTree: WriteTree, path: Path): WriteTreeRef;
+/**
+ * Record a new overwrite from user code.
+ *
+ * @param visible - This is set to false by some transactions. It should be excluded from event caches
+ */
+export declare function writeTreeAddOverwrite(writeTree: WriteTree, path: Path, snap: Node, writeId: number, visible?: boolean): void;
+/**
+ * Record a new merge from user code.
+ */
+export declare function writeTreeAddMerge(writeTree: WriteTree, path: Path, changedChildren: {
+    [k: string]: Node;
+}, writeId: number): void;
+export declare function writeTreeGetWrite(writeTree: WriteTree, 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.
+ *
+ * @returns true if the write may have been visible (meaning we'll need to reevaluate / raise
+ * events as a result).
+ */
+export declare function writeTreeRemoveWrite(writeTree: WriteTree, 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.
+ *
+ */
+export declare function writeTreeGetCompleteWriteData(writeTree: WriteTree, 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 writeIdsToExclude - An optional set to be excluded
+ * @param includeHiddenWrites - Defaults to false, whether or not to layer on writes with visible set to false
+ */
+export declare function writeTreeCalcCompleteEventCache(writeTree: WriteTree, 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.
+ */
+export declare function writeTreeCalcCompleteEventChildren(writeTree: WriteTree, 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
+ */
+export declare function writeTreeCalcEventCacheAfterServerOverwrite(writeTree: WriteTree, 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.
+ */
+export declare function writeTreeCalcCompleteChild(writeTree: WriteTree, 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.
+ */
+export declare function writeTreeShadowingWrite(writeTree: WriteTree, 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.
+ */
+export declare function writeTreeCalcIndexedSlice(writeTree: WriteTree, treePath: Path, completeServerData: Node | null, startPost: NamedNode, count: number, reverse: boolean, index: Index): NamedNode[];
+export declare function newWriteTree(): WriteTree;
+/**
+ * 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().
+ */
+export interface 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.
+     */
+    visibleWrites: CompoundWrite;
+    /**
+     * 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).
+     */
+    allWrites: WriteRecord[];
+    lastWriteId: number;
+}
+/**
+ * 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 writeIdsToExclude - Optional writes to exclude.
+ * @param includeHiddenWrites - Defaults to false, whether or not to layer on writes with visible set to false
+ */
+export declare function writeTreeRefCalcCompleteEventCache(writeTreeRef: WriteTreeRef, 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.
+ *
+ */
+export declare function writeTreeRefCalcCompleteEventChildren(writeTreeRef: WriteTreeRef, 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
+ *
+ *
+ */
+export declare function writeTreeRefCalcEventCacheAfterServerOverwrite(writeTreeRef: WriteTreeRef, 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.
+ *
+ */
+export declare function writeTreeRefShadowingWrite(writeTreeRef: WriteTreeRef, 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
+ */
+export declare function writeTreeRefCalcIndexedSlice(writeTreeRef: WriteTreeRef, 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.
+ */
+export declare function writeTreeRefCalcCompleteChild(writeTreeRef: WriteTreeRef, childKey: string, existingServerCache: CacheNode): Node | null;
+/**
+ * Return a WriteTreeRef for a child.
+ */
+export declare function writeTreeRefChild(writeTreeRef: WriteTreeRef, childName: string): WriteTreeRef;
+export declare function newWriteTreeRef(path: Path, writeTree: WriteTree): WriteTreeRef;
+/**
+ * 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.
+ *
+ */
+export interface WriteTreeRef {
+    /**
+     * The path to this particular write tree ref. Used for calling methods on writeTree_ while exposing a simpler
+     * interface to callers.
+     */
+    readonly treePath: Path;
+    /**
+     * * 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.
+     */
+    readonly writeTree: WriteTree;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/operation/AckUserWrite.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/AckUserWrite.d.ts
new file mode 100644
index 0000000..a0cef5f
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/AckUserWrite.d.ts
@@ -0,0 +1,36 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ImmutableTree } from '../util/ImmutableTree';
+import { Path } from '../util/Path';
+import { Operation, OperationType } from './Operation';
+export declare class AckUserWrite implements Operation {
+    /** @inheritDoc */ path: Path;
+    /** @inheritDoc */ affectedTree: ImmutableTree<boolean>;
+    /** @inheritDoc */ revert: boolean;
+    /** @inheritDoc */
+    type: OperationType;
+    /** @inheritDoc */
+    source: import("./Operation").OperationSource;
+    /**
+     * @param affectedTree - A tree containing true for each affected path. Affected paths can't overlap.
+     */
+    constructor(
+    /** @inheritDoc */ path: Path, 
+    /** @inheritDoc */ affectedTree: ImmutableTree<boolean>, 
+    /** @inheritDoc */ revert: boolean);
+    operationForChild(childName: string): AckUserWrite;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/operation/ListenComplete.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/ListenComplete.d.ts
new file mode 100644
index 0000000..87157a2
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/ListenComplete.d.ts
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Path } from '../util/Path';
+import { Operation, OperationSource, OperationType } from './Operation';
+export declare class ListenComplete implements Operation {
+    source: OperationSource;
+    path: Path;
+    /** @inheritDoc */
+    type: OperationType;
+    constructor(source: OperationSource, path: Path);
+    operationForChild(childName: string): ListenComplete;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Merge.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Merge.d.ts
new file mode 100644
index 0000000..3fbfbef
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Merge.d.ts
@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from '../snap/Node';
+import { ImmutableTree } from '../util/ImmutableTree';
+import { Path } from '../util/Path';
+import { Operation, OperationSource, OperationType } from './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>);
+    operationForChild(childName: string): Operation;
+    toString(): string;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Operation.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Operation.d.ts
new file mode 100644
index 0000000..4e0bc44
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Operation.d.ts
@@ -0,0 +1,45 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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 {
+    source: OperationSource;
+    type: OperationType;
+    path: Path;
+    operationForChild(childName: string): Operation | null;
+}
+export interface OperationSource {
+    fromUser: boolean;
+    fromServer: boolean;
+    queryId: string | null;
+    tagged: boolean;
+}
+export declare function newOperationSourceUser(): OperationSource;
+export declare function newOperationSourceServer(): OperationSource;
+export declare function newOperationSourceServerTaggedQuery(queryId: string): OperationSource;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Overwrite.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Overwrite.d.ts
new file mode 100644
index 0000000..2494845
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/operation/Overwrite.d.ts
@@ -0,0 +1,28 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from '../snap/Node';
+import { Path } from '../util/Path';
+import { Operation, OperationSource, OperationType } from './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;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/ChildrenNode.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/ChildrenNode.d.ts
new file mode 100644
index 0000000..0cc0519
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/ChildrenNode.d.ts
@@ -0,0 +1,112 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Path } from '../util/Path';
+import { SortedMap, SortedMapIterator } from '../util/SortedMap';
+import { Index } from './indexes/Index';
+import { IndexMap } from './IndexMap';
+import { NamedNode, Node } from './Node';
+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.
+ */
+export declare class ChildrenNode implements Node {
+    private readonly children_;
+    private readonly priorityNode_;
+    private indexMap_;
+    private lazyHash_;
+    static get EMPTY_NODE(): ChildrenNode;
+    /**
+     * @param children_ - List of children of this node..
+     * @param priorityNode_ - The priority of this node (as a snapshot node).
+     */
+    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 static INTEGER_REGEXP_;
+    /** @inheritDoc */
+    val(exportFormat?: boolean): object;
+    /** @inheritDoc */
+    hash(): string;
+    /** @inheritDoc */
+    getPredecessorChildName(childName: string, childNode: Node, index: Index): string;
+    getFirstChildName(indexDefinition: Index): string | null;
+    getFirstChild(indexDefinition: Index): NamedNode | null;
+    /**
+     * Given an index, return the key name of the largest value we have, according to that index
+     */
+    getLastChildName(indexDefinition: Index): string | null;
+    getLastChild(indexDefinition: Index): NamedNode | null;
+    forEachChild(index: Index, action: (key: string, node: Node) => boolean | void): boolean;
+    getIterator(indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    getIteratorFrom(startPost: NamedNode, indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    getReverseIterator(indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    getReverseIteratorFrom(endPost: NamedNode, indexDefinition: Index): SortedMapIterator<string | NamedNode, Node, NamedNode>;
+    compareTo(other: ChildrenNode): number;
+    withIndex(indexDefinition: Index): Node;
+    isIndexed(index: Index): boolean;
+    equals(other: Node): boolean;
+    /**
+     * Returns a SortedMap ordered by index, or null if the default (by-key) ordering can be used
+     * instead.
+     *
+     */
+    private resolveIndex_;
+}
+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.
+ */
+export declare const MAX_NODE: MaxNode;
+/**
+ * Document NamedNode extensions
+ */
+declare module './Node' {
+    interface NamedNode {
+        MIN: NamedNode;
+        MAX: NamedNode;
+    }
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/IndexMap.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/IndexMap.d.ts
new file mode 100644
index 0000000..42e64ee
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/IndexMap.d.ts
@@ -0,0 +1,43 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { SortedMap } from '../util/SortedMap';
+import { Index } from './indexes/Index';
+import { NamedNode, Node } from './Node';
+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;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/LeafNode.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/LeafNode.d.ts
new file mode 100644
index 0000000..6eecc9d
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/LeafNode.d.ts
@@ -0,0 +1,83 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Indexable } from '../util/misc';
+import { Path } from '../util/Path';
+import { ChildrenNodeConstructor } from './ChildrenNode';
+import { Index } from './indexes/Index';
+import { Node } from './Node';
+/**
+ * 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
+     */
+    static VALUE_TYPE_ORDER: string[];
+    private lazyHash_;
+    /**
+     * @param value_ - The value to store in this leaf node. The object type is
+     * possible in the event of a deferred value
+     * @param 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;
+    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;
+    val(exportFormat?: boolean): {};
+    /** @inheritDoc */
+    hash(): string;
+    /**
+     * Returns the value of the leaf node.
+     * @returns The value of the node.
+     */
+    getValue(): Indexable | string | number | boolean;
+    compareTo(other: Node): number;
+    /**
+     * Comparison specifically for two leaf nodes
+     */
+    private compareToLeafNode_;
+    withIndex(): Node;
+    isIndexed(): boolean;
+    equals(other: Node): boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/Node.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/Node.d.ts
new file mode 100644
index 0000000..99d379c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/Node.d.ts
@@ -0,0 +1,126 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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.
+     * @returns Whether this is a leaf node.
+     */
+    isLeafNode(): boolean;
+    /**
+     * Gets the priority of the node.
+     * @returns The priority of the node.
+     */
+    getPriority(): Node;
+    /**
+     * Returns a duplicate node with the new priority.
+     * @param newPriorityNode - New priority to set for the node.
+     * @returns Node with new priority.
+     */
+    updatePriority(newPriorityNode: Node): Node;
+    /**
+     * Returns the specified immediate child, or null if it doesn't exist.
+     * @param childName - The name of the child to retrieve.
+     * @returns 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 - The path of the child to retrieve.
+     * @returns 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 childName - The name of the child to find the predecessor of.
+     * @param childNode - The node to find the predecessor of.
+     * @param index - The index to use to determine the predecessor
+     * @returns 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 childName - The name of the child to update.
+     * @param newChildNode - The new child node
+     * @returns 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 - The path of the child to update.
+     * @param newChildNode - The new child node, which may be an empty node
+     * @returns The updated node.
+     */
+    updateChild(path: Path, newChildNode: Node): Node;
+    /**
+     * True if the immediate child specified exists
+     */
+    hasChild(childName: string): boolean;
+    /**
+     * @returns True if this node has no value or children.
+     */
+    isEmpty(): boolean;
+    /**
+     * @returns The number of children of this node.
+     */
+    numChildren(): number;
+    /**
+     * Calls action for each child.
+     * @param action - Action to be called for
+     * each child.  It's passed the child name and the child node.
+     * @returns 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).
+     * @returns Value of this node as JSON.
+     */
+    val(exportFormat?: boolean): unknown;
+    /**
+     * @returns hash representing the node contents.
+     */
+    hash(): string;
+    /**
+     * @param other - Another node
+     * @returns -1 for less than, 0 for equal, 1 for greater than other
+     */
+    compareTo(other: Node): number;
+    /**
+     * @returns Whether or not this snapshot equals other
+     */
+    equals(other: Node): boolean;
+    /**
+     * @returns This node, with the specified index now available
+     */
+    withIndex(indexDefinition: Index): Node;
+    isIndexed(indexDefinition: Index): boolean;
+}
+export declare class NamedNode {
+    name: string;
+    node: Node;
+    constructor(name: string, node: Node);
+    static Wrap(name: string, node: Node): NamedNode;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/childSet.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/childSet.d.ts
new file mode 100644
index 0000000..42ce33a
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/childSet.d.ts
@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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
+ *
+ * @param childList - Unsorted list of children
+ * @param cmp - The comparison method to be used
+ * @param keyFn - An optional function to extract K from a node wrapper, if K's
+ * type is not NamedNode
+ * @param mapSortFn - An optional override for comparator used by the generated sorted map
+ */
+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>;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/comparators.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/comparators.d.ts
new file mode 100644
index 0000000..a39e3aa
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/comparators.d.ts
@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/Index.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/Index.d.ts
new file mode 100644
index 0000000..04c1fa9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/Index.d.ts
@@ -0,0 +1,50 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Comparator } from '../../util/SortedMap';
+import { Node, NamedNode } from '../Node';
+export declare abstract class Index {
+    abstract compare(a: NamedNode, b: NamedNode): number;
+    abstract isDefinedOn(node: Node): boolean;
+    /**
+     * @returns 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.
+     *
+     *
+     * @returns True if the portion of the snapshot being indexed changed between oldNode and newNode
+     */
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    /**
+     * @returns a node wrapper that will sort equal to or less than
+     * any other node wrapper, using this index
+     */
+    minPost(): NamedNode;
+    /**
+     * @returns a node wrapper that will sort greater than or equal to
+     * any other node wrapper, using this index
+     */
+    abstract maxPost(): NamedNode;
+    abstract makePost(indexValue: unknown, name: string): NamedNode;
+    /**
+     * @returns String representation for inclusion in a query spec
+     */
+    abstract toString(): string;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/KeyIndex.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/KeyIndex.d.ts
new file mode 100644
index 0000000..dc4c04f
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/KeyIndex.d.ts
@@ -0,0 +1,34 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ChildrenNode } from '../ChildrenNode';
+import { Node, NamedNode } from '../Node';
+import { Index } from './Index';
+export declare class KeyIndex extends Index {
+    static get __EMPTY_NODE(): ChildrenNode;
+    static set __EMPTY_NODE(val: ChildrenNode);
+    compare(a: NamedNode, b: NamedNode): number;
+    isDefinedOn(node: Node): boolean;
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    minPost(): any;
+    maxPost(): NamedNode;
+    makePost(indexValue: string, name: string): NamedNode;
+    /**
+     * @returns String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const KEY_INDEX: KeyIndex;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PathIndex.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PathIndex.d.ts
new file mode 100644
index 0000000..65af086
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PathIndex.d.ts
@@ -0,0 +1,29 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Path } from '../../util/Path';
+import { NamedNode, Node } from '../Node';
+import { Index } from './Index';
+export declare class PathIndex extends Index {
+    private indexPath_;
+    constructor(indexPath_: Path);
+    protected extractChild(snap: Node): Node;
+    isDefinedOn(node: Node): boolean;
+    compare(a: NamedNode, b: NamedNode): number;
+    makePost(indexValue: object, name: string): NamedNode;
+    maxPost(): NamedNode;
+    toString(): string;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PriorityIndex.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PriorityIndex.d.ts
new file mode 100644
index 0000000..910d780
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/PriorityIndex.d.ts
@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { NamedNode, Node } from '../Node';
+import { Index } from './Index';
+export declare function setNodeFromJSON(val: (a: unknown) => Node): void;
+export declare function setMaxNode(val: Node): void;
+export declare class PriorityIndex extends Index {
+    compare(a: NamedNode, b: NamedNode): number;
+    isDefinedOn(node: Node): boolean;
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    minPost(): NamedNode;
+    maxPost(): NamedNode;
+    makePost(indexValue: unknown, name: string): NamedNode;
+    /**
+     * @returns String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const PRIORITY_INDEX: PriorityIndex;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/ValueIndex.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/ValueIndex.d.ts
new file mode 100644
index 0000000..6b801a9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/indexes/ValueIndex.d.ts
@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { NamedNode, Node } from '../Node';
+import { Index } from './Index';
+export declare class ValueIndex extends Index {
+    compare(a: NamedNode, b: NamedNode): number;
+    isDefinedOn(node: Node): boolean;
+    indexedValueChanged(oldNode: Node, newNode: Node): boolean;
+    minPost(): NamedNode;
+    maxPost(): NamedNode;
+    makePost(indexValue: object, name: string): NamedNode;
+    /**
+     * @returns String representation for inclusion in a query spec
+     */
+    toString(): string;
+}
+export declare const VALUE_INDEX: ValueIndex;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/nodeFromJSON.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/nodeFromJSON.d.ts
new file mode 100644
index 0000000..a20804b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/nodeFromJSON.d.ts
@@ -0,0 +1,24 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from './Node';
+/**
+ * Constructs a snapshot node representing the passed JSON and returns it.
+ * @param json - JSON to create a node for.
+ * @param priority - Optional priority to use.  This will be ignored if the
+ * passed JSON contains a .priority property.
+ */
+export declare function nodeFromJSON(json: unknown | null, priority?: unknown): Node;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/snap/snap.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/snap.d.ts
new file mode 100644
index 0000000..579a2ed
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/snap/snap.d.ts
@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from './Node';
+export declare function setMaxNode(val: Node): void;
+export declare const priorityHashText: (priority: string | number) => string;
+/**
+ * Validates that a priority snapshot Node is valid.
+ */
+export declare const validatePriorityNode: (priorityNode: Node) => void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsCollection.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsCollection.d.ts
new file mode 100644
index 0000000..0179d61
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsCollection.d.ts
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * Tracks a collection of stats.
+ */
+export declare class StatsCollection {
+    private counters_;
+    incrementCounter(name: string, amount?: number): void;
+    get(): {
+        [k: string]: number;
+    };
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsListener.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsListener.d.ts
new file mode 100644
index 0000000..cf6d906
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsListener.d.ts
@@ -0,0 +1,30 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { StatsCollection } from './StatsCollection';
+/**
+ * Returns the delta from the previous call to get stats.
+ *
+ * @param collection_ - The collection to "listen" to.
+ */
+export declare class StatsListener {
+    private collection_;
+    private last_;
+    constructor(collection_: StatsCollection);
+    get(): {
+        [k: string]: number;
+    };
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsManager.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsManager.d.ts
new file mode 100644
index 0000000..7c02ab4
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsManager.d.ts
@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../RepoInfo';
+import { StatsCollection } from './StatsCollection';
+export declare function statsManagerGetCollection(repoInfo: RepoInfo): StatsCollection;
+export declare function statsManagerGetOrCreateReporter<T>(repoInfo: RepoInfo, creatorFunction: () => T): T;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsReporter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsReporter.d.ts
new file mode 100644
index 0000000..402b43b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/stats/StatsReporter.d.ts
@@ -0,0 +1,28 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ServerActions } from '../ServerActions';
+import { StatsCollection } from './StatsCollection';
+export declare class StatsReporter {
+    private server_;
+    private statsListener_;
+    statsToReport_: {
+        [k: string]: boolean;
+    };
+    constructor(collection: StatsCollection, server_: ServerActions);
+    private reportStats_;
+}
+export declare function statsReporterIncludeStat(reporter: StatsReporter, stat: string): void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/storage/DOMStorageWrapper.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/DOMStorageWrapper.d.ts
new file mode 100644
index 0000000..662d8f5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/DOMStorageWrapper.d.ts
@@ -0,0 +1,46 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * 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.
+ *
+ */
+export declare class DOMStorageWrapper {
+    private domStorage_;
+    private prefix_;
+    /**
+     * @param domStorage_ - The underlying storage object (e.g. localStorage or sessionStorage)
+     */
+    constructor(domStorage_: Storage);
+    /**
+     * @param key - The key to save the value under
+     * @param value - The value being stored, or null to remove the key.
+     */
+    set(key: string, value: unknown | null): void;
+    /**
+     * @returns The value that was stored under this key, or null
+     */
+    get(key: string): unknown;
+    remove(key: string): void;
+    isInMemoryStorage: boolean;
+    prefixedName_(name: string): string;
+    toString(): string;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/storage/MemoryStorage.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/MemoryStorage.d.ts
new file mode 100644
index 0000000..08dd04e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/MemoryStorage.d.ts
@@ -0,0 +1,27 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * An in-memory storage implementation that matches the API of DOMStorageWrapper
+ * (TODO: create interface for both to implement).
+ */
+export declare class MemoryStorage {
+    private cache_;
+    set(key: string, value: unknown | null): void;
+    get(key: string): unknown;
+    remove(key: string): void;
+    isInMemoryStorage: boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/storage/storage.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/storage.d.ts
new file mode 100644
index 0000000..52b3579
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/storage/storage.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/EventEmitter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/EventEmitter.d.ts
new file mode 100644
index 0000000..0fd09f9
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/EventEmitter.d.ts
@@ -0,0 +1,39 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * 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_;
+    constructor(allowedEvents_: string[]);
+    /**
+     * To be overridden by derived classes in order to fire an initial event when
+     * somebody subscribes for data.
+     *
+     * @returns {Array.<*>} Array of parameters to trigger initial event with.
+     */
+    abstract getInitialEvent(eventType: string): unknown[];
+    /**
+     * To be called by derived classes to trigger events.
+     */
+    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_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/ImmutableTree.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/ImmutableTree.d.ts
new file mode 100644
index 0000000..8a85ce6
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/ImmutableTree.d.ts
@@ -0,0 +1,117 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Path } from './Path';
+import { SortedMap } from './SortedMap';
+/**
+ * A tree with immutable elements.
+ */
+export declare class ImmutableTree<T> {
+    readonly value: T | null;
+    readonly children: SortedMap<string, ImmutableTree<T>>;
+    static fromObject<T>(obj: {
+        [k: string]: T;
+    }): ImmutableTree<T>;
+    constructor(value: T | null, children?: SortedMap<string, ImmutableTree<T>>);
+    /**
+     * True if the value is empty and there are no children
+     */
+    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 relativePath - The remainder of the path
+     * @param predicate - The predicate to satisfy to return a node
+     */
+    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
+     */
+    findRootMostValueAndPath(relativePath: Path): {
+        path: Path;
+        value: T;
+    } | null;
+    /**
+     * @returns The subtree at the given path
+     */
+    subtree(relativePath: Path): ImmutableTree<T>;
+    /**
+     * Sets a value at the specified path.
+     *
+     * @param relativePath - Path to set value at.
+     * @param toSet - Value to set.
+     * @returns Resulting tree.
+     */
+    set(relativePath: Path, toSet: T | null): ImmutableTree<T>;
+    /**
+     * Removes the value at the specified path.
+     *
+     * @param relativePath - Path to value to remove.
+     * @returns Resulting tree.
+     */
+    remove(relativePath: Path): ImmutableTree<T>;
+    /**
+     * Gets a value from the tree.
+     *
+     * @param relativePath - Path to get value for.
+     * @returns Value at path, or null.
+     */
+    get(relativePath: Path): T | null;
+    /**
+     * Replace the subtree at the specified path with the given new tree.
+     *
+     * @param relativePath - Path to replace subtree for.
+     * @param newTree - New tree.
+     * @returns 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
+     */
+    fold<V>(fn: (path: Path, value: T, children: {
+        [k: string]: V;
+    }) => V): V;
+    /**
+     * Recursive helper for public-facing fold() method
+     */
+    private fold_;
+    /**
+     * Find the first matching value on the given path. Return the result of applying f to it.
+     */
+    findOnPath<V>(path: Path, f: (path: Path, value: T) => V | null): V | null;
+    private findOnPath_;
+    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 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_;
+    foreachChild(f: (name: string, value: T) => void): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/NextPushId.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/NextPushId.d.ts
new file mode 100644
index 0000000..9ad8425
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/NextPushId.d.ts
@@ -0,0 +1,33 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * 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;
+export declare const successor: (key: string) => string;
+export declare const predecessor: (key: string) => string;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/OnlineMonitor.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/OnlineMonitor.d.ts
new file mode 100644
index 0000000..bed347b
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/OnlineMonitor.d.ts
@@ -0,0 +1,31 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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.
+ */
+export declare class OnlineMonitor extends EventEmitter {
+    private online_;
+    static getInstance(): OnlineMonitor;
+    constructor();
+    getInitialEvent(eventType: string): boolean[];
+    currentlyOnline(): boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/Path.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/Path.d.ts
new file mode 100644
index 0000000..2f73b36
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/Path.d.ts
@@ -0,0 +1,94 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * 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 {
+    pieces_: string[];
+    pieceNum_: number;
+    /**
+     * @param pathOrString - Path string to parse, or another path, or the raw
+     * tokens array
+     */
+    constructor(pathOrString: string | string[], pieceNum?: number);
+    toString(): string;
+}
+export declare function newEmptyPath(): Path;
+export declare function pathGetFront(path: Path): string | null;
+/**
+ * @returns The number of segments in this path
+ */
+export declare function pathGetLength(path: Path): number;
+export declare function pathPopFront(path: Path): Path;
+export declare function pathGetBack(path: Path): string | null;
+export declare function pathToUrlEncodedString(path: Path): string;
+/**
+ * Shallow copy of the parts of the path.
+ *
+ */
+export declare function pathSlice(path: Path, begin?: number): string[];
+export declare function pathParent(path: Path): Path | null;
+export declare function pathChild(path: Path, childPathObj: string | Path): Path;
+/**
+ * @returns True if there are no segments in this path
+ */
+export declare function pathIsEmpty(path: Path): boolean;
+/**
+ * @returns The path from outerPath to innerPath
+ */
+export declare function newRelativePath(outerPath: Path, innerPath: Path): Path;
+/**
+ * @returns -1, 0, 1 if left is less, equal, or greater than the right.
+ */
+export declare function pathCompare(left: Path, right: Path): number;
+/**
+ * @returns true if paths are the same.
+ */
+export declare function pathEquals(path: Path, other: Path): boolean;
+/**
+ * @returns True if this path is a parent of (or the same as) other
+ */
+export declare function pathContains(path: Path, 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 {
+    errorPrefix_: string;
+    parts_: string[];
+    /** Initialize to number of '/' chars needed in path. */
+    byteLength_: number;
+    /**
+     * @param path - Initial Path.
+     * @param errorPrefix_ - Prefix for any error messages.
+     */
+    constructor(path: Path, errorPrefix_: string);
+}
+export declare function validationPathPush(validationPath: ValidationPath, child: string): void;
+export declare function validationPathPop(validationPath: ValidationPath): void;
+/**
+ * String for use in error messages - uses '.' notation for path.
+ */
+export declare function validationPathToErrorString(validationPath: ValidationPath): string;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/ServerValues.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/ServerValues.d.ts
new file mode 100644
index 0000000..916cf14
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/ServerValues.d.ts
@@ -0,0 +1,56 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from '../snap/Node';
+import { SyncTree } from '../SyncTree';
+import { Indexable } from './misc';
+import { Path } from './Path';
+interface ValueProvider {
+    getImmediateChild(childName: string): ValueProvider;
+    node(): Node;
+}
+/**
+ * Generate placeholders for deferred values.
+ */
+export declare const generateWithValues: (values: {
+    [k: string]: unknown;
+} | null) => {
+    [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.
+ */
+export declare const resolveDeferredLeafValue: (value: {
+    [k: string]: unknown;
+} | string | number | boolean, existingVal: ValueProvider, serverValues: {
+    [k: string]: unknown;
+}) => string | number | boolean;
+/**
+ * Recursively replace all deferred values and priorities in the tree with the
+ * specified generated replacement values.
+ * @param path - path to which write is relative
+ * @param node - new data written at path
+ * @param syncTree - current data
+ */
+export declare const resolveDeferredValueTree: (path: Path, node: Node, syncTree: SyncTree, serverValues: Indexable) => Node;
+/**
+ * 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.
+ */
+export declare const resolveDeferredValueSnapshot: (node: Node, existing: Node, serverValues: Indexable) => Node;
+export {};
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/SortedMap.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/SortedMap.d.ts
new file mode 100644
index 0000000..09d3aa6
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/SortedMap.d.ts
@@ -0,0 +1,324 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * @fileoverview 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 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 nodeStack_;
+    /**
+     * @param node - Node to iterate.
+     * @param isReverse_ - Whether or not to iterate in reverse
+     */
+    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>;
+    /**
+     * @param key - Key associated with this node.
+     * @param value - Value associated with this node.
+     * @param color - Whether this node is red.
+     * @param left - Left child.
+     * @param 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 key - New key for the node, or null.
+     * @param value - New value for the node, or null.
+     * @param color - New color for the node, or null.
+     * @param left - New left child for the node, or null.
+     * @param right - New right child for the node, or null.
+     * @returns 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>;
+    /**
+     * @returns The total number of nodes in the tree.
+     */
+    count(): number;
+    /**
+     * @returns True if the tree is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * Traverses the tree in key order and calls the specified action function
+     * for each node.
+     *
+     * @param action - Callback function to be called for each
+     *   node.  If it returns true, traversal is aborted.
+     * @returns 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 action - Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @returns True if traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    /**
+     * @returns The minimum node in the tree.
+     */
+    private min_;
+    /**
+     * @returns The maximum key in the tree.
+     */
+    minKey(): K;
+    /**
+     * @returns The maximum key in the tree.
+     */
+    maxKey(): K;
+    /**
+     * @param key - Key to insert.
+     * @param value - Value to insert.
+     * @param comparator - Comparator.
+     * @returns New tree, with the key/value added.
+     */
+    insert(key: K, value: V, comparator: Comparator<K>): LLRBNode<K, V>;
+    /**
+     * @returns New tree, with the minimum key removed.
+     */
+    private removeMin_;
+    /**
+     * @param key - The key of the item to remove.
+     * @param comparator - Comparator.
+     * @returns New tree, with the specified item removed.
+     */
+    remove(key: K, comparator: Comparator<K>): LLRBNode<K, V> | LLRBEmptyNode<K, V>;
+    /**
+     * @returns Whether this is a RED node.
+     */
+    isRed_(): boolean;
+    /**
+     * @returns New tree after performing any needed rotations.
+     */
+    private fixUp_;
+    /**
+     * @returns New tree, after moveRedLeft.
+     */
+    private moveRedLeft_;
+    /**
+     * @returns New tree, after moveRedRight.
+     */
+    private moveRedRight_;
+    /**
+     * @returns New tree, after rotateLeft.
+     */
+    private rotateLeft_;
+    /**
+     * @returns New tree, after rotateRight.
+     */
+    private rotateRight_;
+    /**
+     * @returns Newt ree, after colorFlip.
+     */
+    private colorFlip_;
+    /**
+     * For testing.
+     *
+     * @returns True if all is well.
+     */
+    private checkMaxDepth_;
+    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.
+     *
+     * @returns 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 key - Key to be added.
+     * @param value - Value to be added.
+     * @param comparator - Comparator.
+     * @returns 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 key - The key to remove.
+     * @param comparator - Comparator.
+     * @returns New tree, with item removed.
+     */
+    remove(key: K, comparator: Comparator<K>): LLRBEmptyNode<K, V>;
+    /**
+     * @returns The total number of nodes in the tree.
+     */
+    count(): number;
+    /**
+     * @returns True if the tree is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * Traverses the tree in key order and calls the specified action function
+     * for each node.
+     *
+     * @param action - Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @returns 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 action - Callback function to be called for each
+     * node.  If it returns true, traversal is aborted.
+     * @returns True if traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    minKey(): null;
+    maxKey(): null;
+    check_(): number;
+    /**
+     * @returns 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.
+     */
+    static EMPTY_NODE: LLRBEmptyNode<unknown, unknown>;
+    /**
+     * @param comparator_ - Key comparator.
+     * @param 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 key - Key to be added.
+     * @param value - Value to be added.
+     * @returns 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 key - The key to remove.
+     * @returns New map, with item removed.
+     */
+    remove(key: K): SortedMap<K, V>;
+    /**
+     * Returns the value of the node with the given key, or null.
+     *
+     * @param key - The key to look up.
+     * @returns 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 key - The key to find the predecessor of
+     * @returns The predecessor key.
+     */
+    getPredecessorKey(key: K): K | null;
+    /**
+     * @returns True if the map is empty.
+     */
+    isEmpty(): boolean;
+    /**
+     * @returns The total number of nodes in the map.
+     */
+    count(): number;
+    /**
+     * @returns The minimum key in the map.
+     */
+    minKey(): K | null;
+    /**
+     * @returns 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 action - Callback function to be called
+     * for each key/value pair.  If action returns true, traversal is aborted.
+     * @returns 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 action - Callback function to be called
+     * for each key/value pair.  If action returns true, traversal is aborted.
+     * @returns True if the traversal was aborted.
+     */
+    reverseTraversal(action: (k: K, v: V) => void): boolean;
+    /**
+     * Returns an iterator over the SortedMap.
+     * @returns 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>;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/Tree.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/Tree.d.ts
new file mode 100644
index 0000000..3bcdc27
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/Tree.d.ts
@@ -0,0 +1,105 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Path } from './Path';
+/**
+ * Node in a Tree.
+ */
+export interface TreeNode<T> {
+    children: Record<string, TreeNode<T>>;
+    childCount: number;
+    value?: T;
+}
+/**
+ * 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> {
+    readonly name: string;
+    readonly parent: Tree<T> | null;
+    node: TreeNode<T>;
+    /**
+     * @param name - Optional name of the node.
+     * @param parent - Optional parent node.
+     * @param node - Optional node to wrap.
+     */
+    constructor(name?: string, parent?: Tree<T> | null, node?: TreeNode<T>);
+}
+/**
+ * Returns a sub-Tree for the given path.
+ *
+ * @param pathObj - Path to look up.
+ * @returns Tree for path.
+ */
+export declare function treeSubTree<T>(tree: Tree<T>, pathObj: string | Path): Tree<T>;
+/**
+ * Returns the data associated with this tree node.
+ *
+ * @returns The data or null if no data exists.
+ */
+export declare function treeGetValue<T>(tree: Tree<T>): T | undefined;
+/**
+ * Sets data to this tree node.
+ *
+ * @param value - Value to set.
+ */
+export declare function treeSetValue<T>(tree: Tree<T>, value: T | undefined): void;
+/**
+ * @returns Whether the tree has any children.
+ */
+export declare function treeHasChildren<T>(tree: Tree<T>): boolean;
+/**
+ * @returns Whether the tree is empty (no value or children).
+ */
+export declare function treeIsEmpty<T>(tree: Tree<T>): boolean;
+/**
+ * Calls action for each child of this tree node.
+ *
+ * @param action - Action to be called for each child.
+ */
+export declare function treeForEachChild<T>(tree: Tree<T>, action: (tree: Tree<T>) => void): void;
+/**
+ * Does a depth-first traversal of this node's descendants, calling action for each one.
+ *
+ * @param action - Action to be called for each child.
+ * @param includeSelf - Whether to call action on this node as well. Defaults to
+ *   false.
+ * @param childrenFirst - Whether to call action on children before calling it on
+ *   parent.
+ */
+export declare function treeForEachDescendant<T>(tree: Tree<T>, action: (tree: Tree<T>) => void, includeSelf?: boolean, childrenFirst?: boolean): void;
+/**
+ * Calls action on each ancestor node.
+ *
+ * @param action - Action to be called on each parent; return
+ *   true to abort.
+ * @param includeSelf - Whether to call action on this node as well.
+ * @returns true if the action callback returned true.
+ */
+export declare function treeForEachAncestor<T>(tree: Tree<T>, 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 action - Action to be called for each child.
+ */
+export declare function treeForEachImmediateDescendantWithValue<T>(tree: Tree<T>, action: (tree: Tree<T>) => void): void;
+/**
+ * @returns The path of this tree node, as a Path.
+ */
+export declare function treeGetPath<T>(tree: Tree<T>): any;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/VisibilityMonitor.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/VisibilityMonitor.d.ts
new file mode 100644
index 0000000..e9e306f
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/VisibilityMonitor.d.ts
@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { EventEmitter } from './EventEmitter';
+export declare class VisibilityMonitor extends EventEmitter {
+    private visible_;
+    static getInstance(): VisibilityMonitor;
+    constructor();
+    getInitialEvent(eventType: string): boolean[];
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/libs/parser.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/libs/parser.d.ts
new file mode 100644
index 0000000..9f1d58c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/libs/parser.d.ts
@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../../RepoInfo';
+import { Path } from '../Path';
+export declare const parseRepoInfo: (dataURL: string, nodeAdmin: boolean) => {
+    repoInfo: RepoInfo;
+    path: Path;
+};
+export declare const parseDatabaseURL: (dataURL: string) => {
+    host: string;
+    port: number;
+    domain: string;
+    subdomain: string;
+    secure: boolean;
+    scheme: string;
+    pathString: string;
+    namespace: string;
+};
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/misc.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/misc.d.ts
new file mode 100644
index 0000000..abfa94c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/misc.d.ts
@@ -0,0 +1,19 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export interface Indexable {
+    [key: string]: unknown;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/util.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/util.d.ts
new file mode 100644
index 0000000..35c32d8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/util.d.ts
@@ -0,0 +1,176 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { QueryContext } from '../view/EventRegistration';
+/**
+ * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).
+ */
+export declare const LUIDGenerator: () => number;
+/**
+ * Sha1 hash of the input string
+ * @param str - The string to hash
+ * @returns {!string} The resulting hash
+ */
+export declare const sha1: (str: string) => string;
+/**
+ * Use this for all debug messages in Firebase.
+ */
+export declare let logger: ((a: string) => void) | null;
+/**
+ * The implementation of Firebase.enableLogging (defined here to break dependencies)
+ * @param logger_ - A flag to turn on logging, or a custom logger
+ * @param persistent - Whether or not to persist logging settings across refreshes
+ */
+export declare const enableLogging: (logger_?: boolean | ((a: string) => void) | null, persistent?: boolean) => void;
+export declare const log: (...varArgs: unknown[]) => void;
+export declare const logWrapper: (prefix: string) => (...varArgs: unknown[]) => void;
+export declare const error: (...varArgs: string[]) => void;
+export declare const fatal: (...varArgs: string[]) => never;
+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;
+export declare const warnAboutUnsupportedMethod: (methodName: string) => void;
+/**
+ * Returns true if data is NaN, or +/- Infinity.
+ */
+export declare const isInvalidJSONNumber: (data: unknown) => boolean;
+export declare const executeWhenDOMReady: (fn: () => void) => void;
+/**
+ * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names
+ */
+export declare const MIN_NAME = "[MIN_NAME]";
+/**
+ * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names
+ */
+export declare const MAX_NAME = "[MAX_NAME]";
+/**
+ * Compares valid Firebase key names, plus min and max name
+ */
+export declare const nameCompare: (a: string, b: string) => number;
+/**
+ * @returns {!number} comparison result.
+ */
+export declare const stringCompare: (a: string, b: string) => number;
+export declare const requireKey: (key: string, obj: {
+    [k: string]: unknown;
+}) => unknown;
+export declare const ObjectToUniqueKey: (obj: unknown) => string;
+/**
+ * Splits a string into a number of smaller segments of maximum size
+ * @param str - The string
+ * @param segsize - The maximum number of chars in the string.
+ * @returns 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 callback - Callback function.
+ * @param context - Optional context to bind to.
+ *
+ */
+export declare const bindCallback: (callback: (a: unknown) => void, context?: object | null) => (a: unknown) => void;
+/**
+ * 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 v - A double
+ *
+ */
+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).
+ */
+export declare const isChromeExtensionContentScript: () => boolean;
+/**
+ * Used to detect if we're in a Windows 8 Store app.
+ */
+export declare const isWindowsStoreApp: () => boolean;
+/**
+ * Converts a server error code to a JavaScript Error
+ */
+export declare function errorForServerCode(code: string, query: QueryContext): Error;
+/**
+ * Used to test for integer-looking strings
+ */
+export declare const INTEGER_REGEXP_: RegExp;
+/**
+ * For use in keys, the minimum possible 32-bit integer.
+ */
+export declare const INTEGER_32_MIN = -2147483648;
+/**
+ * For use in keys, the maximum possible 32-bit integer.
+ */
+export declare const INTEGER_32_MAX = 2147483647;
+/**
+ * If the string contains a 32-bit integer, return it.  Else return null.
+ */
+export declare const tryParseInt: (str: string) => number | null;
+/**
+ * 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 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 callback - Optional onComplete callback.
+ * @param varArgs - Arbitrary args to be passed to opt_onComplete
+ */
+export declare const callUserCallback: (callback?: Function | null, ...varArgs: unknown[]) => void;
+/**
+ * @returns {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.
+ */
+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 fn - Function to run.
+ * @param time - Milliseconds to wait before running.
+ * @returns The setTimeout() return value.
+ */
+export declare const setTimeoutNonBlocking: (fn: () => void, time: number) => number | object;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/util/validation.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/util/validation.d.ts
new file mode 100644
index 0000000..dc216b8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/util/validation.d.ts
@@ -0,0 +1,70 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../RepoInfo';
+import { Path, ValidationPath } from './Path';
+/**
+ * True for invalid Firebase keys
+ */
+export declare const INVALID_KEY_REGEX_: RegExp;
+/**
+ * True for invalid Firebase paths.
+ * Allows '/' in paths.
+ */
+export declare const INVALID_PATH_REGEX_: RegExp;
+/**
+ * Maximum number of characters to allow in leaf value
+ */
+export declare const MAX_LEAF_SIZE_: number;
+export declare const isValidKey: (key: unknown) => boolean;
+export declare const isValidPathString: (pathString: string) => boolean;
+export declare const isValidRootPathString: (pathString: string) => boolean;
+export declare const isValidPriority: (priority: unknown) => boolean;
+/**
+ * Pre-validate a datum passed as an argument to Firebase function.
+ */
+export declare const validateFirebaseDataArg: (fnName: string, value: unknown, path: Path, optional: boolean) => void;
+/**
+ * Validate a data object client-side before sending to server.
+ */
+export declare const validateFirebaseData: (errorPrefix: string, data: unknown, path_: Path | ValidationPath) => void;
+/**
+ * Pre-validate paths passed in the firebase function.
+ */
+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()).
+ */
+export declare const validateFirebaseMergeDataArg: (fnName: string, data: unknown, path: Path, optional: boolean) => void;
+export declare const validatePriority: (fnName: string, priority: unknown, optional: boolean) => void;
+export declare const validateKey: (fnName: string, argumentName: string, key: string, optional: boolean) => void;
+/**
+ * @internal
+ */
+export declare const validatePathString: (fnName: string, argumentName: string, pathString: string, optional: boolean) => void;
+export declare const validateRootPathString: (fnName: string, argumentName: string, pathString: string, optional: boolean) => void;
+/**
+ * @internal
+ */
+export declare const validateWritablePath: (fnName: string, path: Path) => void;
+export declare const validateUrl: (fnName: string, parsedUrl: {
+    repoInfo: RepoInfo;
+    path: Path;
+}) => void;
+export declare const validateString: (fnName: string, argumentName: string, string: unknown, optional: boolean) => void;
+export declare const validateObject: (fnName: string, argumentName: string, obj: unknown, optional: boolean) => void;
+export declare const validateObjectContainsKey: (fnName: string, argumentName: string, obj: unknown, key: string, optional: boolean, optType?: string) => void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/version.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/version.d.ts
new file mode 100644
index 0000000..d6ea395
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/version.d.ts
@@ -0,0 +1,23 @@
+/**
+ * @license
+ * Copyright 2019 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/** The semver (www.semver.org) version of the SDK. */
+export declare let SDK_VERSION: string;
+/**
+ * SDK_VERSION should be set before any database instance is created
+ * @internal
+ */
+export declare function setSDKVersion(version: string): void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/CacheNode.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/CacheNode.d.ts
new file mode 100644
index 0000000..da38015
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/CacheNode.d.ts
@@ -0,0 +1,41 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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_;
+    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
+     */
+    isFullyInitialized(): boolean;
+    /**
+     * Returns whether this node is potentially missing children due to a filter applied to the node
+     */
+    isFiltered(): boolean;
+    isCompleteForPath(path: Path): boolean;
+    isCompleteForChild(key: string): boolean;
+    getNode(): Node;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/Change.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/Change.d.ts
new file mode 100644
index 0000000..985eee0
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/Change.d.ts
@@ -0,0 +1,46 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from '../snap/Node';
+export declare const enum ChangeType {
+    /** Event type for a child added */
+    CHILD_ADDED = "child_added",
+    /** Event type for a child removed */
+    CHILD_REMOVED = "child_removed",
+    /** Event type for a child changed */
+    CHILD_CHANGED = "child_changed",
+    /** Event type for a child moved */
+    CHILD_MOVED = "child_moved",
+    /** Event type for a value change */
+    VALUE = "value"
+}
+export interface Change {
+    /** @param type - The event type */
+    type: ChangeType;
+    /** @param snapshotNode - The data */
+    snapshotNode: Node;
+    /** @param childName - The name for this child, if it's a child even */
+    childName?: string;
+    /** @param oldSnap - Used for intermediate processing of child changed events */
+    oldSnap?: Node;
+    /**  * @param prevName - The name for the previous child, if applicable */
+    prevName?: string | null;
+}
+export declare function changeValue(snapshotNode: Node): Change;
+export declare function changeChildAdded(childName: string, snapshotNode: Node): Change;
+export declare function changeChildRemoved(childName: string, snapshotNode: Node): Change;
+export declare function changeChildChanged(childName: string, snapshotNode: Node, oldSnap: Node): Change;
+export declare function changeChildMoved(childName: string, snapshotNode: Node): Change;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/ChildChangeAccumulator.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ChildChangeAccumulator.d.ts
new file mode 100644
index 0000000..473ab16
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ChildChangeAccumulator.d.ts
@@ -0,0 +1,22 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Change } from './Change';
+export declare class ChildChangeAccumulator {
+    private readonly changeMap;
+    trackChildChange(change: Change): void;
+    getChanges(): Change[];
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/CompleteChildSource.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/CompleteChildSource.d.ts
new file mode 100644
index 0000000..fcc774c
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/CompleteChildSource.d.ts
@@ -0,0 +1,55 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../snap/indexes/Index';
+import { NamedNode, Node } from '../snap/Node';
+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 {
+    getCompleteChild(childKey: string): Node | null;
+    getChildAfterChild(index: Index, child: NamedNode, reverse: boolean): NamedNode | null;
+}
+/**
+ * An implementation of CompleteChildSource that never returns any additional children
+ */
+export declare class NoCompleteChildSource_ implements CompleteChildSource {
+    getCompleteChild(childKey?: string): Node | null;
+    getChildAfterChild(index?: Index, child?: NamedNode, reverse?: boolean): NamedNode | null;
+}
+/**
+ * Singleton instance.
+ */
+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.
+ */
+export declare class WriteTreeCompleteChildSource implements CompleteChildSource {
+    private writes_;
+    private viewCache_;
+    private optCompleteServerCache_;
+    constructor(writes_: WriteTreeRef, viewCache_: ViewCache, optCompleteServerCache_?: Node | null);
+    getCompleteChild(childKey: string): Node | null;
+    getChildAfterChild(index: Index, child: NamedNode, reverse: boolean): NamedNode | null;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/Event.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/Event.d.ts
new file mode 100644
index 0000000..69e326a
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/Event.d.ts
@@ -0,0 +1,64 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { DataSnapshot as ExpDataSnapshot } from '../../api/Reference_impl';
+import { Path } from '../util/Path';
+import { EventRegistration } from './EventRegistration';
+/**
+ * Encapsulates the data needed to raise an event
+ * @interface
+ */
+export interface Event {
+    getPath(): Path;
+    getEventType(): string;
+    getEventRunner(): () => void;
+    toString(): string;
+}
+/**
+ * One of the following strings: "value", "child_added", "child_changed",
+ * "child_removed", or "child_moved."
+ */
+export type EventType = 'value' | 'child_added' | 'child_changed' | 'child_moved' | 'child_removed';
+/**
+ * Encapsulates the data needed to raise an event
+ */
+export declare class DataEvent implements Event {
+    eventType: EventType;
+    eventRegistration: EventRegistration;
+    snapshot: ExpDataSnapshot;
+    prevName?: string | null;
+    /**
+     * @param eventType - One of: value, child_added, child_changed, child_moved, child_removed
+     * @param eventRegistration - The function to call to with the event data. User provided
+     * @param snapshot - The data backing the event
+     * @param prevName - Optional, the name of the previous child for child_* events.
+     */
+    constructor(eventType: EventType, eventRegistration: EventRegistration, snapshot: ExpDataSnapshot, prevName?: string | null);
+    getPath(): Path;
+    getEventType(): string;
+    getEventRunner(): () => void;
+    toString(): string;
+}
+export declare class CancelEvent implements Event {
+    eventRegistration: EventRegistration;
+    error: Error;
+    path: Path;
+    constructor(eventRegistration: EventRegistration, error: Error, path: Path);
+    getPath(): Path;
+    getEventType(): string;
+    getEventRunner(): () => void;
+    toString(): string;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventGenerator.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventGenerator.d.ts
new file mode 100644
index 0000000..bc916b8
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventGenerator.d.ts
@@ -0,0 +1,42 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../snap/indexes/Index';
+import { Node } from '../snap/Node';
+import { Change } from './Change';
+import { Event } from './Event';
+import { EventRegistration, QueryContext } from './EventRegistration';
+/**
+ * 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.
+ *
+ */
+export declare class EventGenerator {
+    query_: QueryContext;
+    index_: Index;
+    constructor(query_: QueryContext);
+}
+/**
+ * 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.
+ */
+export declare function eventGeneratorGenerateEventsForChanges(eventGenerator: EventGenerator, changes: Change[], eventCache: Node, eventRegistrations: EventRegistration[]): Event[];
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventQueue.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventQueue.d.ts
new file mode 100644
index 0000000..63ea6f4
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventQueue.d.ts
@@ -0,0 +1,67 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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.
+ *
+ */
+export declare class EventQueue {
+    eventLists_: EventList[];
+    /**
+     * Tracks recursion depth of raiseQueuedEvents_, for debugging purposes.
+     */
+    recursionDepth_: number;
+}
+/**
+ * @param eventDataList - The new events to queue.
+ */
+export declare function eventQueueQueueEvents(eventQueue: EventQueue, 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 - The path to raise events for.
+ * @param eventDataList - The new events to raise.
+ */
+export declare function eventQueueRaiseEventsAtPath(eventQueue: EventQueue, 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 changedPath - The path to raise events for.
+ * @param eventDataList - The events to raise
+ */
+export declare function eventQueueRaiseEventsForChangedPath(eventQueue: EventQueue, changedPath: Path, eventDataList: Event[]): void;
+interface EventList {
+    events: Event[];
+    path: Path;
+}
+export {};
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventRegistration.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventRegistration.d.ts
new file mode 100644
index 0000000..4425097
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/EventRegistration.d.ts
@@ -0,0 +1,87 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { DataSnapshot } from '../../api/Reference_impl';
+import { Repo } from '../Repo';
+import { Path } from '../util/Path';
+import { Change } from './Change';
+import { CancelEvent, Event } from './Event';
+import { QueryParams } from './QueryParams';
+/**
+ * A user callback. Callbacks issues from the Legacy SDK maintain references
+ * to the original user-issued callbacks, which allows equality
+ * comparison by reference even though this callbacks are wrapped before
+ * they can be passed to the firebase@exp SDK.
+ *
+ * @internal
+ */
+export interface UserCallback {
+    (dataSnapshot: DataSnapshot, previousChildName?: string | null): unknown;
+    userCallback?: unknown;
+    context?: object | null;
+}
+/**
+ * A wrapper class that converts events from the database@exp SDK to the legacy
+ * Database SDK. Events are not converted directly as event registration relies
+ * on reference comparison of the original user callback (see `matches()`) and
+ * relies on equality of the legacy SDK's `context` object.
+ */
+export declare class CallbackContext {
+    private readonly snapshotCallback;
+    private readonly cancelCallback?;
+    constructor(snapshotCallback: UserCallback, cancelCallback?: (error: Error) => unknown);
+    onValue(expDataSnapshot: DataSnapshot, previousChildName?: string | null): void;
+    onCancel(error: Error): void;
+    get hasCancelCallback(): boolean;
+    matches(other: CallbackContext): boolean;
+}
+export interface QueryContext {
+    readonly _queryIdentifier: string;
+    readonly _queryObject: object;
+    readonly _repo: Repo;
+    readonly _path: Path;
+    readonly _queryParams: QueryParams;
+}
+/**
+ * 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
+     */
+    respondsTo(eventType: string): boolean;
+    createEvent(change: Change, query: QueryContext): Event;
+    /**
+     * Given event data, return a function to trigger the user's callback
+     */
+    getEventRunner(eventData: Event): () => void;
+    createCancelEvent(error: Error, path: Path): CancelEvent | null;
+    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)
+     *
+     */
+    hasAnyCallback(): boolean;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/QueryParams.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/QueryParams.d.ts
new file mode 100644
index 0000000..47870f7
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/QueryParams.d.ts
@@ -0,0 +1,95 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../snap/indexes/Index';
+import { PriorityIndex } from '../snap/indexes/PriorityIndex';
+import { NodeFilter } from './filter/NodeFilter';
+/**
+ * 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.
+ *
+ * @internal
+ */
+export declare class QueryParams {
+    limitSet_: boolean;
+    startSet_: boolean;
+    startNameSet_: boolean;
+    startAfterSet_: boolean;
+    endSet_: boolean;
+    endNameSet_: boolean;
+    endBeforeSet_: boolean;
+    limit_: number;
+    viewFrom_: string;
+    indexStartValue_: unknown | null;
+    indexStartName_: string;
+    indexEndValue_: unknown | null;
+    indexEndName_: string;
+    index_: PriorityIndex;
+    hasStart(): boolean;
+    /**
+     * @returns True if it would return from left.
+     */
+    isViewFromLeft(): boolean;
+    /**
+     * Only valid to call if hasStart() returns true
+     */
+    getIndexStartValue(): unknown;
+    /**
+     * Only valid to call if hasStart() returns true.
+     * Returns the starting key name for the range defined by these query parameters
+     */
+    getIndexStartName(): string;
+    hasEnd(): boolean;
+    /**
+     * Only valid to call if hasEnd() returns true.
+     */
+    getIndexEndValue(): unknown;
+    /**
+     * Only valid to call if hasEnd() returns true.
+     * Returns the end key name for the range defined by these query parameters
+     */
+    getIndexEndName(): string;
+    hasLimit(): boolean;
+    /**
+     * @returns True if a limit has been set and it has been explicitly anchored
+     */
+    hasAnchoredLimit(): boolean;
+    /**
+     * Only valid to call if hasLimit() returns true
+     */
+    getLimit(): number;
+    getIndex(): Index;
+    loadsAllData(): boolean;
+    isDefault(): boolean;
+    copy(): QueryParams;
+}
+export declare function queryParamsGetNodeFilter(queryParams: QueryParams): NodeFilter;
+export declare function queryParamsLimit(queryParams: QueryParams, newLimit: number): QueryParams;
+export declare function queryParamsLimitToFirst(queryParams: QueryParams, newLimit: number): QueryParams;
+export declare function queryParamsLimitToLast(queryParams: QueryParams, newLimit: number): QueryParams;
+export declare function queryParamsStartAt(queryParams: QueryParams, indexValue: unknown, key?: string | null): QueryParams;
+export declare function queryParamsStartAfter(queryParams: QueryParams, indexValue: unknown, key?: string | null): QueryParams;
+export declare function queryParamsEndAt(queryParams: QueryParams, indexValue: unknown, key?: string | null): QueryParams;
+export declare function queryParamsEndBefore(queryParams: QueryParams, indexValue: unknown, key?: string | null): QueryParams;
+export declare function queryParamsOrderBy(queryParams: QueryParams, index: Index): QueryParams;
+/**
+ * Returns a set of REST query string parameters representing this query.
+ *
+ * @returns query string parameters
+ */
+export declare function queryParamsToRestQueryStringParameters(queryParams: QueryParams): Record<string, string | number>;
+export declare function queryParamsGetQueryObject(queryParams: QueryParams): Record<string, unknown>;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/View.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/View.d.ts
new file mode 100644
index 0000000..a872658
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/View.d.ts
@@ -0,0 +1,59 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Operation } from '../operation/Operation';
+import { Node } from '../snap/Node';
+import { Path } from '../util/Path';
+import { WriteTreeRef } from '../WriteTree';
+import { Event } from './Event';
+import { EventGenerator } from './EventGenerator';
+import { EventRegistration, QueryContext } from './EventRegistration';
+import { ViewCache } from './ViewCache';
+import { ViewProcessor } from './ViewProcessor';
+/**
+ * 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.
+ */
+export declare class View {
+    private query_;
+    processor_: ViewProcessor;
+    viewCache_: ViewCache;
+    eventRegistrations_: EventRegistration[];
+    eventGenerator_: EventGenerator;
+    constructor(query_: QueryContext, initialViewCache: ViewCache);
+    get query(): QueryContext;
+}
+export declare function viewGetServerCache(view: View): Node | null;
+export declare function viewGetCompleteNode(view: View): Node | null;
+export declare function viewGetCompleteServerCache(view: View, path: Path): Node | null;
+export declare function viewIsEmpty(view: View): boolean;
+export declare function viewAddEventRegistration(view: View, eventRegistration: EventRegistration): void;
+/**
+ * @param eventRegistration - If null, remove all callbacks.
+ * @param cancelError - If a cancelError is provided, appropriate cancel events will be returned.
+ * @returns Cancel events, if cancelError was provided.
+ */
+export declare function viewRemoveEventRegistration(view: View, eventRegistration: EventRegistration | null, cancelError?: Error): Event[];
+/**
+ * Applies the given Operation, updates our cache, and returns the appropriate events.
+ */
+export declare function viewApplyOperation(view: View, operation: Operation, writesCache: WriteTreeRef, completeServerCache: Node | null): Event[];
+export declare function viewGetInitialEvents(view: View, registration: EventRegistration): Event[];
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewCache.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewCache.d.ts
new file mode 100644
index 0000000..089749d
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewCache.d.ts
@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Node } from '../snap/Node';
+import { CacheNode } from './CacheNode';
+/**
+ * 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).
+ */
+export interface ViewCache {
+    readonly eventCache: CacheNode;
+    readonly serverCache: CacheNode;
+}
+export declare function newViewCache(eventCache: CacheNode, serverCache: CacheNode): ViewCache;
+export declare function viewCacheUpdateEventSnap(viewCache: ViewCache, eventSnap: Node, complete: boolean, filtered: boolean): ViewCache;
+export declare function viewCacheUpdateServerSnap(viewCache: ViewCache, serverSnap: Node, complete: boolean, filtered: boolean): ViewCache;
+export declare function viewCacheGetCompleteEventSnap(viewCache: ViewCache): Node | null;
+export declare function viewCacheGetCompleteServerSnap(viewCache: ViewCache): Node | null;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewProcessor.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewProcessor.d.ts
new file mode 100644
index 0000000..9baa237
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/ViewProcessor.d.ts
@@ -0,0 +1,32 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Operation } from '../operation/Operation';
+import { Node } from '../snap/Node';
+import { WriteTreeRef } from '../WriteTree';
+import { Change } from './Change';
+import { NodeFilter } from './filter/NodeFilter';
+import { ViewCache } from './ViewCache';
+export interface ProcessorResult {
+    readonly viewCache: ViewCache;
+    readonly changes: Change[];
+}
+export interface ViewProcessor {
+    readonly filter: NodeFilter;
+}
+export declare function newViewProcessor(filter: NodeFilter): ViewProcessor;
+export declare function viewProcessorAssertIndexed(viewProcessor: ViewProcessor, viewCache: ViewCache): void;
+export declare function viewProcessorApplyOperation(viewProcessor: ViewProcessor, oldViewCache: ViewCache, operation: Operation, writesCache: WriteTreeRef, completeCache: Node | null): ProcessorResult;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/IndexedFilter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/IndexedFilter.d.ts
new file mode 100644
index 0000000..07584dd
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/IndexedFilter.d.ts
@@ -0,0 +1,35 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../../snap/indexes/Index';
+import { Node } from '../../snap/Node';
+import { Path } from '../../util/Path';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { NodeFilter } from './NodeFilter';
+/**
+ * Doesn't really filter nodes but applies an index to the node and keeps track of any changes
+ */
+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;
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    filtersNodes(): boolean;
+    getIndexedFilter(): IndexedFilter;
+    getIndex(): Index;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/LimitedFilter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/LimitedFilter.d.ts
new file mode 100644
index 0000000..cb2da45
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/LimitedFilter.d.ts
@@ -0,0 +1,47 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../../snap/indexes/Index';
+import { Node } from '../../snap/Node';
+import { Path } from '../../util/Path';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { QueryParams } from '../QueryParams';
+import { IndexedFilter } from './IndexedFilter';
+import { NodeFilter } from './NodeFilter';
+/**
+ * Applies a limit and a range to a node and uses RangedFilter to do the heavy lifting where possible
+ */
+export declare class LimitedFilter implements NodeFilter {
+    private readonly rangedFilter_;
+    private readonly index_;
+    private readonly limit_;
+    private readonly reverse_;
+    private readonly startIsInclusive_;
+    private readonly endIsInclusive_;
+    constructor(params: QueryParams);
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    filtersNodes(): boolean;
+    getIndexedFilter(): IndexedFilter;
+    getIndex(): Index;
+    private fullLimitUpdateChild_;
+    private withinDirectionalStart;
+    private withinDirectionalEnd;
+    private withinStartPost;
+    private withinEndPost;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/NodeFilter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/NodeFilter.d.ts
new file mode 100644
index 0000000..b1fafb2
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/NodeFilter.d.ts
@@ -0,0 +1,54 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Index } from '../../snap/indexes/Index';
+import { Node } from '../../snap/Node';
+import { Path } from '../../util/Path';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { CompleteChildSource } from '../CompleteChildSource';
+/**
+ * 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.
+     */
+    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.
+     */
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    /**
+     * Update the priority of the root node
+     */
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    /**
+     * Returns true if children might be filtered due to query criteria
+     */
+    filtersNodes(): boolean;
+    /**
+     * Returns the index filter that this filter uses to get a NodeFilter that doesn't filter any children.
+     */
+    getIndexedFilter(): NodeFilter;
+    /**
+     * Returns the index that this filter uses
+     */
+    getIndex(): Index;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/RangedFilter.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/RangedFilter.d.ts
new file mode 100644
index 0000000..bef847a
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/core/view/filter/RangedFilter.d.ts
@@ -0,0 +1,47 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { NamedNode, Node } from '../../../core/snap/Node';
+import { Index } from '../../snap/indexes/Index';
+import { Path } from '../../util/Path';
+import { ChildChangeAccumulator } from '../ChildChangeAccumulator';
+import { CompleteChildSource } from '../CompleteChildSource';
+import { QueryParams } from '../QueryParams';
+import { IndexedFilter } from './IndexedFilter';
+import { NodeFilter } from './NodeFilter';
+/**
+ * Filters nodes by range and uses an IndexFilter to track any changes after filtering the node
+ */
+export declare class RangedFilter implements NodeFilter {
+    private indexedFilter_;
+    private index_;
+    private startPost_;
+    private endPost_;
+    private startIsInclusive_;
+    private endIsInclusive_;
+    constructor(params: QueryParams);
+    getStartPost(): NamedNode;
+    getEndPost(): NamedNode;
+    matches(node: NamedNode): boolean;
+    updateChild(snap: Node, key: string, newChild: Node, affectedPath: Path, source: CompleteChildSource, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    updateFullNode(oldSnap: Node, newSnap: Node, optChangeAccumulator: ChildChangeAccumulator | null): Node;
+    updatePriority(oldSnap: Node, newPriority: Node): Node;
+    filtersNodes(): boolean;
+    getIndexedFilter(): IndexedFilter;
+    getIndex(): Index;
+    private static getStartPost_;
+    private static getEndPost_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/index.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/index.d.ts
new file mode 100644
index 0000000..8990721
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/index.d.ts
@@ -0,0 +1,28 @@
+/**
+ * Firebase Realtime Database
+ *
+ * @packageDocumentation
+ */
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Database } from './api/Database';
+export * from './api';
+declare module '@firebase/component' {
+    interface NameServiceMapping {
+        'database': Database;
+    }
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/index.node.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/index.node.d.ts
new file mode 100644
index 0000000..952da59
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/index.node.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './api';
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/index.standalone.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/index.standalone.d.ts
new file mode 100644
index 0000000..c852b29
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/index.standalone.d.ts
@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export * from './api.standalone';
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/internal/index.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/internal/index.d.ts
new file mode 100644
index 0000000..77b7558
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/internal/index.d.ts
@@ -0,0 +1,38 @@
+/**
+ * @license
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { FirebaseAppCheckInternal } from '@firebase/app-check-interop-types';
+import { FirebaseApp } from '@firebase/app-types';
+import { FirebaseAuthInternal } from '@firebase/auth-interop-types';
+import { Database } from '../api.standalone';
+/**
+ * Used by console to create a database based on the app,
+ * passed database URL and a custom auth implementation.
+ * @internal
+ * @param app - A valid FirebaseApp-like object
+ * @param url - A valid Firebase databaseURL
+ * @param version - custom version e.g. firebase-admin version
+ * @param customAppCheckImpl - custom app check implementation
+ * @param customAuthImpl - custom auth implementation
+ */
+export declare function _initStandalone({ app, url, version, customAuthImpl, customAppCheckImpl, nodeAdmin }: {
+    app: FirebaseApp;
+    url: string;
+    version: string;
+    customAuthImpl: FirebaseAuthInternal;
+    customAppCheckImpl?: FirebaseAppCheckInternal;
+    nodeAdmin?: boolean;
+}): Database;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/BrowserPollConnection.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/BrowserPollConnection.d.ts
new file mode 100644
index 0000000..b99fd6e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/BrowserPollConnection.d.ts
@@ -0,0 +1,198 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+import { PacketReceiver } from './polling/PacketReceiver';
+import { Transport } from './Transport';
+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.
+ */
+export declare class BrowserPollConnection implements Transport {
+    connId: string;
+    repoInfo: RepoInfo;
+    private applicationId?;
+    private appCheckToken?;
+    private authToken?;
+    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 connId An identifier for this connection, used for logging
+     * @param repoInfo The info for the endpoint to send data to.
+     * @param applicationId The Firebase App ID for this project.
+     * @param appCheckToken The AppCheck token for this client.
+     * @param authToken The AuthToken to use for this connection.
+     * @param transportSessionId Optional transportSessionid if we are
+     * reconnecting for an existing transport session
+     * @param lastSessionId Optional lastSessionId if the PersistentConnection has
+     * already created a connection previously
+     */
+    constructor(connId: string, repoInfo: RepoInfo, applicationId?: string, appCheckToken?: string, authToken?: string, transportSessionId?: string, lastSessionId?: string);
+    /**
+     * @param onMessage - Callback when messages arrive
+     * @param 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;
+    static forceAllow_: boolean;
+    /**
+     * Forces long polling to be considered as a potential transport
+     */
+    static forceAllow(): void;
+    static forceDisallow_: boolean;
+    /**
+     * 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 shutdown_;
+    /**
+     * Triggered when this transport is closed
+     */
+    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 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).
+     */
+    addDisconnectPingFrame(id: string, pw: string): void;
+    /**
+     * Used to track the bytes received by this client
+     */
+    private incrementIncomingBytes_;
+}
+export interface IFrameElement extends HTMLIFrameElement {
+    doc: Document;
+}
+/*********************************************************************************************
+ * A wrapper around an iframe that is used as a long-polling script holder.
+ *********************************************************************************************/
+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 received 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 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 id - The ID of this connection
+     * @param 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 url - The URL of the script tag.
+     * @param serial - The serial number of the request.
+     */
+    private addLongPollTag_;
+    /**
+     * Add an arbitrary script tag to the iframe.
+     * @param url - The URL for the script tag source.
+     * @param loadCB - A callback to be triggered once the script has loaded.
+     */
+    addTag(url: string, loadCB: () => void): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/Connection.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Connection.d.ts
new file mode 100644
index 0000000..e20e244
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Connection.d.ts
@@ -0,0 +1,102 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+/**
+ * Creates a new real-time connection to the server using whichever method works
+ * best in the current browser.
+ */
+export declare class Connection {
+    id: string;
+    private repoInfo_;
+    private applicationId_;
+    private appCheckToken_;
+    private authToken_;
+    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 id - an id for this connection
+     * @param repoInfo_ - the info for the endpoint to connect to
+     * @param applicationId_ - the Firebase App ID for this project
+     * @param appCheckToken_ - The App Check Token for this device.
+     * @param authToken_ - The auth token for this session.
+     * @param onMessage_ - the callback to be triggered when a server-push message arrives
+     * @param onReady_ - the callback to be triggered when this connection is ready to send messages.
+     * @param onDisconnect_ - the callback to be triggered when a connection was lost
+     * @param onKill_ - the callback to be triggered when this connection has permanently shut down.
+     * @param lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server
+     */
+    constructor(id: string, repoInfo_: RepoInfo, applicationId_: string | undefined, appCheckToken_: string | undefined, authToken_: string | undefined, onMessage_: (a: {}) => void, onReady_: (a: number, b: string) => void, onDisconnect_: () => void, onKill_: (a: string) => void, lastSessionId?: string);
+    /**
+     * Starts a connection attempt
+     */
+    private start_;
+    private nextTransportId_;
+    private disconnReceiver_;
+    private connReceiver_;
+    /**
+     * @param 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 handshake - The handshake data returned from the server
+     */
+    private onHandshake_;
+    private tryStartUpgrade_;
+    private startUpgrade_;
+    private onReset_;
+    private onConnectionEstablished_;
+    private sendPingOnPrimaryIfNecessary_;
+    private onSecondaryConnectionLost_;
+    /**
+     * @param everConnected - Whether or not the connection ever reached a server. Used to determine if
+     * we should flush the host cache
+     */
+    private onConnectionLost_;
+    private onConnectionShutdown_;
+    private sendData_;
+    /**
+     * Cleans up this connection, calling the appropriate callbacks
+     */
+    close(): void;
+    private closeConnections_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/Constants.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Constants.d.ts
new file mode 100644
index 0000000..4ff77ff
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Constants.d.ts
@@ -0,0 +1,27 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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_RE: RegExp;
+export declare const LAST_SESSION_PARAM = "ls";
+export declare const APPLICATION_ID_PARAM = "p";
+export declare const APP_CHECK_TOKEN_PARAM = "ac";
+export declare const WEBSOCKET = "websocket";
+export declare const LONG_POLLING = "long_polling";
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/Transport.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Transport.d.ts
new file mode 100644
index 0000000..d66429e
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/Transport.d.ts
@@ -0,0 +1,58 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+export interface TransportConstructor {
+    new (connId: string, repoInfo: RepoInfo, applicationId?: string, appCheckToken?: string, authToken?: string, transportSessionId?: string, lastSessionId?: string): Transport;
+    isAvailable: () => boolean;
+    responsesRequiredToBeHealthy?: number;
+    healthyTimeout?: number;
+}
+export declare abstract class Transport {
+    /**
+     * Bytes received since connection started.
+     */
+    abstract bytesReceived: number;
+    /**
+     * Bytes sent since connection started.
+     */
+    abstract bytesSent: number;
+    /**
+     * An identifier for this connection, used for logging
+     */
+    abstract connId: string;
+    /**
+     * @param connId - An identifier for this connection, used for logging
+     * @param repoInfo - The info for the endpoint to send data to.
+     * @param transportSessionId - Optional transportSessionId if this is connecting to an existing transport session
+     * @param lastSessionId - Optional lastSessionId if there was a previous connection
+     * @interface
+     */
+    constructor(connId: string, repoInfo: RepoInfo, transportSessionId?: string, lastSessionId?: string);
+    /**
+     * @param onMessage - Callback when messages arrive
+     * @param onDisconnect - Callback with connection lost.
+     */
+    abstract open(onMessage: (a: {}) => void, onDisconnect: (a?: boolean) => void): void;
+    abstract start(): void;
+    abstract close(): void;
+    /**
+     * @param data - The JSON data to transmit
+     */
+    abstract send(data: {}): void;
+    abstract markConnectionHealthy(): void;
+    abstract markConnectionHealthy(): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/TransportManager.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/TransportManager.d.ts
new file mode 100644
index 0000000..4f2ef51
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/TransportManager.d.ts
@@ -0,0 +1,50 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { RepoInfo } from '../core/RepoInfo';
+import { BrowserPollConnection } from './BrowserPollConnection';
+import { TransportConstructor } from './Transport';
+import { WebSocketConnection } from './WebSocketConnection';
+/**
+ * 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.
+ */
+export declare class TransportManager {
+    private transports_;
+    static globalTransportInitialized_: boolean;
+    static get ALL_TRANSPORTS(): (typeof BrowserPollConnection | typeof WebSocketConnection)[];
+    /**
+     * Returns whether transport has been selected to ensure WebSocketConnection or BrowserPollConnection are not called after
+     * TransportManager has already set up transports_
+     */
+    static get IS_TRANSPORT_INITIALIZED(): boolean;
+    /**
+     * @param repoInfo - Metadata around the namespace we're connecting to
+     */
+    constructor(repoInfo: RepoInfo);
+    private initTransports_;
+    /**
+     * @returns The constructor for the initial transport to use
+     */
+    initialTransport(): TransportConstructor;
+    /**
+     * @returns The constructor for the next transport, or null
+     */
+    upgradeTransport(): TransportConstructor | null;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/WebSocketConnection.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/WebSocketConnection.d.ts
new file mode 100644
index 0000000..f427bb5
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/WebSocketConnection.d.ts
@@ -0,0 +1,127 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+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.
+ */
+export declare class WebSocketConnection implements Transport {
+    connId: string;
+    private applicationId?;
+    private appCheckToken?;
+    private authToken?;
+    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_;
+    private nodeAdmin;
+    /**
+     * @param connId identifier for this transport
+     * @param repoInfo The info for the websocket endpoint.
+     * @param applicationId The Firebase App ID for this project.
+     * @param appCheckToken The App Check Token for this client.
+     * @param authToken The Auth Token for this client.
+     * @param transportSessionId Optional transportSessionId if this is connecting
+     * to an existing transport session
+     * @param lastSessionId Optional lastSessionId if there was a previous
+     * connection
+     */
+    constructor(connId: string, repoInfo: RepoInfo, applicationId?: string, appCheckToken?: string, authToken?: string, transportSessionId?: string, lastSessionId?: string);
+    /**
+     * @param repoInfo - The info for the websocket endpoint.
+     * @param transportSessionId - Optional transportSessionId if this is connecting to an existing transport
+     *                                         session
+     * @param lastSessionId - Optional lastSessionId if there was a previous connection
+     * @returns connection url
+     */
+    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."
+     */
+    static responsesRequiredToBeHealthy: number;
+    /**
+     * Time to wait for the connection te become healthy before giving up.
+     */
+    static healthyTimeout: number;
+    /**
+     * Returns true if we previously failed to connect with this transport.
+     */
+    static previouslyFailed(): boolean;
+    markConnectionHealthy(): void;
+    private appendFrame_;
+    /**
+     * @param frameCount - The number of frames we are expecting from the server
+     */
+    private handleNewFrameCount_;
+    /**
+     * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1
+     * @returns Any remaining data to be process, or null if there is none
+     */
+    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 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 str - String to send.
+     */
+    private sendString_;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/realtime/polling/PacketReceiver.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/realtime/polling/PacketReceiver.d.ts
new file mode 100644
index 0000000..78be316
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/realtime/polling/PacketReceiver.d.ts
@@ -0,0 +1,38 @@
+/**
+ * @license
+ * Copyright 2017 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/**
+ * 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.
+ */
+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
+     */
+    handleResponse(requestNum: number, data: unknown[]): void;
+}
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/register.d.ts b/frontend-old/node_modules/@firebase/database/dist/src/register.d.ts
new file mode 100644
index 0000000..4461564
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/register.d.ts
@@ -0,0 +1 @@
+export declare function registerDatabase(variant?: string): void;
diff --git a/frontend-old/node_modules/@firebase/database/dist/src/tsdoc-metadata.json b/frontend-old/node_modules/@firebase/database/dist/src/tsdoc-metadata.json
new file mode 100644
index 0000000..6af1f6a
--- /dev/null
+++ b/frontend-old/node_modules/@firebase/database/dist/src/tsdoc-metadata.json
@@ -0,0 +1,11 @@
+// This file is read by tools that parse documentation comments conforming to the TSDoc standard.
+// It should be published with your NPM package.  It should not be tracked by Git.
+{
+  "tsdocVersion": "0.12",
+  "toolPackages": [
+    {
+      "packageName": "@microsoft/api-extractor",
+      "packageVersion": "0.1.2"
+    }
+  ]
+}