@firebase/firestore/dist/exp/internal.d.ts

The Cloud Firestore component of the Firebase JS SDK.

/**
 * Cloud Firestore
 *
 * @packageDocumentation
 */

import { DocumentData as DocumentData_2 } from '@firebase/firestore-types';
import { EmulatorMockTokenOptions } from '@firebase/util';
import { FirebaseApp } from '@firebase/app-exp';
import { FirebaseAuthInternalName } from '@firebase/auth-interop-types';
import { _FirebaseService } from '@firebase/app-exp';
import { LogLevelString as LogLevel } from '@firebase/logger';
import { Provider } from '@firebase/component';
import { SetOptions as SetOptions_2 } from '@firebase/firestore-types';

/**
 * Converts Firestore's internal types to the JavaScript types that we expose
 * to the user.
 *
 * @internal
 */
export declare abstract class AbstractUserDataWriter {
    convertValue(value: Value, serverTimestampBehavior?: ServerTimestampBehavior): unknown;
    private convertObject;
    private convertGeoPoint;
    private convertArray;
    private convertServerTimestamp;
    private convertTimestamp;
    protected convertDocumentKey(name: string, expectedDatabaseId: DatabaseId): DocumentKey;
    protected abstract convertReference(name: string): unknown;
    protected abstract convertBytes(bytes: ByteString): unknown;
}

/**
 * Describes a map whose keys are active target ids. We do not care about the type of the
 * values.
 */
declare type ActiveTargets = SortedMap<TargetId, unknown>;

/**
 * Add a new document to specified `CollectionReference` with the given data,
 * assigning it a document ID automatically.
 *
 * @param reference - A reference to the collection to add this document to.
 * @param data - An Object containing the data for the new document.
 * @returns A Promise resolved with a `DocumentReference` pointing to the
 * newly created document after it has been written to the backend (Note that it
 * won't resolve while you're offline).
 */
export declare function addDoc<T>(reference: CollectionReference<T>, data: T): Promise<DocumentReference<T>>;

declare interface ApiClientObjectMap<T> {
    [k: string]: T;
}

/**
 * Returns a special value that can be used with {@link (setDoc:1)} or {@link
 * updateDoc:1} that tells the server to remove the given elements from any
 * array value that already exists on the server. All instances of each element
 * specified will be removed from the array. If the field being modified is not
 * already an array it will be overwritten with an empty array.
 *
 * @param elements - The elements to remove from the array.
 * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
 * `updateDoc()`
 */
export declare function arrayRemove(...elements: unknown[]): FieldValue;

/**
 * Returns a special value that can be used with {@link @firebase/firestore/lite#(setDoc:1)} or {@link
 * @firebase/firestore/lite#(updateDoc:1)} that tells the server to union the given elements with any array
 * value that already exists on the server. Each specified element that doesn't
 * already exist in the array will be added to the end. If the field being
 * modified is not already an array it will be overwritten with an array
 * containing exactly the specified elements.
 *
 * @param elements - The elements to union into the array.
 * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
 * `updateDoc()`.
 */
export declare function arrayUnion(...elements: unknown[]): FieldValue;

declare interface AsyncQueue {
    readonly isShuttingDown: boolean;
    /**
     * Adds a new operation to the queue without waiting for it to complete (i.e.
     * we ignore the Promise result).
     */
    enqueueAndForget<T extends unknown>(op: () => Promise<T>): void;
    /**
     * Regardless if the queue has initialized shutdown, adds a new operation to the
     * queue without waiting for it to complete (i.e. we ignore the Promise result).
     */
    enqueueAndForgetEvenWhileRestricted<T extends unknown>(op: () => Promise<T>): void;
    /**
     * Initialize the shutdown of this queue. Once this method is called, the
     * only possible way to request running an operation is through
     * `enqueueEvenWhileRestricted()`.
     */
    enterRestrictedMode(): void;
    /**
     * Adds a new operation to the queue. Returns a promise that will be resolved
     * when the promise returned by the new operation is (with its value).
     */
    enqueue<T extends unknown>(op: () => Promise<T>): Promise<T>;
    /**
     * Enqueue a retryable operation.
     *
     * A retryable operation is rescheduled with backoff if it fails with a
     * IndexedDbTransactionError (the error type used by SimpleDb). All
     * retryable operations are executed in order and only run if all prior
     * operations were retried successfully.
     */
    enqueueRetryable(op: () => Promise<void>): void;
    /**
     * Schedules an operation to be queued on the AsyncQueue once the specified
     * `delayMs` has elapsed. The returned DelayedOperation can be used to cancel
     * or fast-forward the operation prior to its running.
     */
    enqueueAfterDelay<T extends unknown>(timerId: TimerId, delayMs: number, op: () => Promise<T>): DelayedOperation<T>;
    /**
     * Verifies there's an operation currently in-progress on the AsyncQueue.
     * Unfortunately we can't verify that the running code is in the promise chain
     * of that operation, so this isn't a foolproof check, but it should be enough
     * to catch some bugs.
     */
    verifyOperationInProgress(): void;
}

/**
 * Path represents an ordered sequence of string segments.
 */
declare abstract class BasePath<B extends BasePath<B>> {
    private segments;
    private offset;
    private len;
    constructor(segments: string[], offset?: number, length?: number);
    /**
     * Abstract constructor method to construct an instance of B with the given
     * parameters.
     */
    protected abstract construct(segments: string[], offset?: number, length?: number): B;
    /**
     * Returns a String representation.
     *
     * Implementing classes are required to provide deterministic implementations as
     * the String representation is used to obtain canonical Query IDs.
     */
    abstract toString(): string;
    get length(): number;
    isEqual(other: B): boolean;
    child(nameOrPath: string | B): B;
    /** The index of one past the last segment of the path. */
    private limit;
    popFirst(size?: number): B;
    popLast(): B;
    firstSegment(): string;
    lastSegment(): string;
    get(index: number): string;
    isEmpty(): boolean;
    isPrefixOf(other: this): boolean;
    isImmediateParentOf(potentialChild: this): boolean;
    forEach(fn: (segment: string) => void): void;
    toArray(): string[];
    static comparator<T extends BasePath<T>>(p1: BasePath<T>, p2: BasePath<T>): number;
}

/**
 * @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.
 */
/**
 * BatchID is a locally assigned ID for a batch of mutations that have been
 * applied.
 */
declare type BatchId = number;

/**
 * Represents a bound of a query.
 *
 * The bound is specified with the given components representing a position and
 * whether it's just before or just after the position (relative to whatever the
 * query order is).
 *
 * The position represents a logical index position for a query. It's a prefix
 * of values for the (potentially implicit) order by clauses of a query.
 *
 * Bound provides a function to determine whether a document comes before or
 * after a bound. This is influenced by whether the position is just before or
 * just after the provided values.
 */
declare class Bound {
    readonly position: Value[];
    readonly before: boolean;
    constructor(position: Value[], before: boolean);
}

/**
 * Provides interfaces to save and read Firestore bundles.
 */
declare interface BundleCache {
    /**
     * Gets the saved `BundleMetadata` for a given `bundleId`, returns undefined
     * if no bundle metadata is found under the given id.
     */
    getBundleMetadata(transaction: PersistenceTransaction, bundleId: string): PersistencePromise<BundleMetadata | undefined>;
    /**
     * Saves a `BundleMetadata` from a bundle into local storage, using its id as
     * the persistent key.
     */
    saveBundleMetadata(transaction: PersistenceTransaction, metadata: BundleMetadata_2): PersistencePromise<void>;
    /**
     * Gets a saved `NamedQuery` for the given query name. Returns undefined if
     * no queries are found under the given name.
     */
    getNamedQuery(transaction: PersistenceTransaction, queryName: string): PersistencePromise<NamedQuery | undefined>;
    /**
     * Saves a `NamedQuery` from a bundle, using its name as the persistent key.
     */
    saveNamedQuery(transaction: PersistenceTransaction, query: NamedQuery_2): PersistencePromise<void>;
}

/** Properties of a BundledQuery. */
declare interface BundledQuery {
    /** BundledQuery parent */
    parent?: string | null;
    /** BundledQuery structuredQuery */
    structuredQuery?: StructuredQuery | null;
    /** BundledQuery limitType */
    limitType?: LimitType_2 | null;
}

/**
 * Represents a Firestore bundle saved by the SDK in its local storage.
 */
declare interface BundleMetadata {
    /**
     * Id of the bundle. It is used together with `createTime` to determine if a
     * bundle has been loaded by the SDK.
     */
    readonly id: string;
    /** Schema version of the bundle. */
    readonly version: number;
    /**
     * Set to the snapshot version of the bundle if created by the Server SDKs.
     * Otherwise set to SnapshotVersion.MIN.
     */
    readonly createTime: SnapshotVersion;
}

/** Properties of a BundleMetadata. */
declare interface BundleMetadata_2 {
    /** BundleMetadata id */
    id?: string | null;
    /** BundleMetadata createTime */
    createTime?: Timestamp_2 | null;
    /** BundleMetadata version */
    version?: number | null;
    /** BundleMetadata totalDocuments */
    totalDocuments?: number | null;
    /** BundleMetadata totalBytes */
    totalBytes?: number | null;
}

/**
 * An immutable object representing an array of bytes.
 */
export declare class Bytes {
    _byteString: ByteString;
    /** @hideconstructor */
    constructor(byteString: ByteString);
    /**
     * Creates a new `Bytes` object from the given Base64 string, converting it to
     * bytes.
     *
     * @param base64 - The Base64 string used to create the `Bytes` object.
     */
    static fromBase64String(base64: string): Bytes;
    /**
     * Creates a new `Bytes` object from the given Uint8Array.
     *
     * @param array - The Uint8Array used to create the `Bytes` object.
     */
    static fromUint8Array(array: Uint8Array): Bytes;
    /**
     * Returns the underlying bytes as a Base64-encoded string.
     *
     * @returns The Base64-encoded string created from the `Bytes` object.
     */
    toBase64(): string;
    /**
     * Returns the underlying bytes in a new `Uint8Array`.
     *
     * @returns The Uint8Array created from the `Bytes` object.
     */
    toUint8Array(): Uint8Array;
    /**
     * Returns a string representation of the `Bytes` object.
     *
     * @returns A string representation of the `Bytes` object.
     */
    toString(): string;
    /**
     * Returns true if this `Bytes` object is equal to the provided one.
     *
     * @param other - The `Bytes` object to compare against.
     * @returns true if this `Bytes` object is equal to the provided one.
     */
    isEqual(other: Bytes): boolean;
}

/**
 * @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.
 */
/**
 * Immutable class that represents a "proto" byte string.
 *
 * Proto byte strings can either be Base64-encoded strings or Uint8Arrays when
 * sent on the wire. This class abstracts away this differentiation by holding
 * the proto byte string in a common class that must be converted into a string
 * before being sent as a proto.
 */
declare class ByteString {
    private readonly binaryString;
    static readonly EMPTY_BYTE_STRING: ByteString;
    private constructor();
    static fromBase64String(base64: string): ByteString;
    static fromUint8Array(array: Uint8Array): ByteString;
    toBase64(): string;
    toUint8Array(): Uint8Array;
    approximateByteSize(): number;
    compareTo(other: ByteString): number;
    isEqual(other: ByteString): boolean;
}

/**
 * Constant used to indicate the LRU garbage collection should be disabled.
 * Set this value as the `cacheSizeBytes` on the settings passed to the
 * `Firestore` instance.
 */
export declare const CACHE_SIZE_UNLIMITED = -1;

declare const enum ChangeType {
    Added = 0,
    Removed = 1,
    Modified = 2,
    Metadata = 3
}

/**
 * Clears the persistent storage. This includes pending writes and cached
 * documents.
 *
 * Must be called while the `Firestore` instance is not started (after the app is
 * terminated or when the app is first initialized). On startup, this function
 * must be called before other functions (other than {@link
 * initializeFirestore} or {@link getFirestore})). If the `Firestore`
 * instance is still running, the promise will be rejected with the error code
 * of `failed-precondition`.
 *
 * Note: `clearIndexedDbPersistence()` is primarily intended to help write
 * reliable tests that use Cloud Firestore. It uses an efficient mechanism for
 * dropping existing data but does not attempt to securely overwrite or
 * otherwise make cached data unrecoverable. For applications that are sensitive
 * to the disclosure of cached data in between user sessions, we strongly
 * recommend not enabling persistence at all.
 *
 * @param firestore - The `Firestore` instance to clear persistence for.
 * @returns A promise that is resolved when the persistent storage is
 * cleared. Otherwise, the promise is rejected with an error.
 */
export declare function clearIndexedDbPersistence(firestore: FirebaseFirestore): Promise<void>;

/**
 * A randomly-generated key assigned to each Firestore instance at startup.
 */
declare type ClientId = string;

/**
 * Gets a `CollectionReference` instance that refers to the collection at
 * the specified absolute path.
 *
 * @param firestore - A reference to the root Firestore instance.
 * @param path - A slash-separated path to a collection.
 * @param pathSegments - Additional path segments to apply relative to the first
 * argument.
 * @throws If the final path has an even number of segments and does not point
 * to a collection.
 * @returns The `CollectionReference` instance.
 */
export declare function collection(firestore: FirebaseFirestore_2, path: string, ...pathSegments: string[]): CollectionReference<DocumentData>;

/**
 * Gets a `CollectionReference` instance that refers to a subcollection of
 * `reference` at the the specified relative path.
 *
 * @param reference - A reference to a collection.
 * @param path - A slash-separated path to a collection.
 * @param pathSegments - Additional path segments to apply relative to the first
 * argument.
 * @throws If the final path has an even number of segments and does not point
 * to a collection.
 * @returns The `CollectionReference` instance.
 */
export declare function collection(reference: CollectionReference<unknown>, path: string, ...pathSegments: string[]): CollectionReference<DocumentData>;

/**
 * Gets a `CollectionReference` instance that refers to a subcollection of
 * `reference` at the the specified relative path.
 *
 * @param reference - A reference to a Firestore document.
 * @param path - A slash-separated path to a collection.
 * @param pathSegments - Additional path segments that will be applied relative
 * to the first argument.
 * @throws If the final path has an even number of segments and does not point
 * to a collection.
 * @returns The `CollectionReference` instance.
 */
export declare function collection(reference: DocumentReference, path: string, ...pathSegments: string[]): CollectionReference<DocumentData>;

/**
 * Creates and returns a new `Query` instance that includes all documents in the
 * database that are contained in a collection or subcollection with the
 * given `collectionId`.
 *
 * @param firestore - A reference to the root Firestore instance.
 * @param collectionId - Identifies the collections to query over. Every
 * collection or subcollection with this ID as the last segment of its path
 * will be included. Cannot contain a slash.
 * @returns The created `Query`.
 */
export declare function collectionGroup(firestore: FirebaseFirestore_2, collectionId: string): Query<DocumentData>;

/**
 * A `CollectionReference` object can be used for adding documents, getting
 * document references, and querying for documents (using {@link query}).
 */
export declare class CollectionReference<T = DocumentData> extends Query<T> {
    readonly _path: ResourcePath;
    /** The type of this Firestore reference. */
    readonly type = "collection";
    /** @hideconstructor */
    constructor(firestore: FirebaseFirestore_2, converter: FirestoreDataConverter_2<T> | null, _path: ResourcePath);
    /** The collection's identifier. */
    get id(): string;
    /**
     * A string representing the path of the referenced collection (relative
     * to the root of the database).
     */
    get path(): string;
    /**
     * A reference to the containing `DocumentReference` if this is a
     * subcollection. If this isn't a subcollection, the reference is null.
     */
    get parent(): DocumentReference<DocumentData> | null;
    /**
     * Applies a custom data converter to this CollectionReference, allowing you
     * to use your own custom model objects with Firestore. When you call {@link
     * addDoc} with the returned `CollectionReference` instance, the provided
     * converter will convert between Firestore data and your custom type `U`.
     *
     * @param converter - Converts objects to and from Firestore.
     * @returns A `CollectionReference<U>` that uses the provided converter.
     */
    withConverter<U>(converter: FirestoreDataConverter_2<U>): CollectionReference<U>;
    /**
     * Removes the current converter.
     *
     * @param converter - `null` removes the current converter.
     * @returns A `CollectionReference<DocumentData>` that does not use a
     * converter.
     */
    withConverter(converter: null): CollectionReference<DocumentData>;
}

/**
 * @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.
 */
declare type Comparator<K> = (key1: K, key2: K) => number;

declare interface ComponentConfiguration {
    asyncQueue: AsyncQueue;
    databaseInfo: DatabaseInfo;
    credentials: CredentialsProvider;
    clientId: ClientId;
    initialUser: User;
    maxConcurrentLimboResolutions: number;
}

declare type CompositeFilterOp = 'OPERATOR_UNSPECIFIED' | 'AND';

/**
 * A Listener for credential change events. The listener should fetch a new
 * token and may need to invalidate other state if the current user has also
 * changed.
 */
declare type CredentialChangeListener = (user: User) => Promise<void>;

/**
 * Provides methods for getting the uid and token for the current user and
 * listening for changes.
 */
declare interface CredentialsProvider {
    /** Requests a token for the current user. */
    getToken(): Promise<Token | null>;
    /**
     * Marks the last retrieved token as invalid, making the next GetToken request
     * force-refresh the token.
     */
    invalidateToken(): void;
    /**
     * Specifies a listener to be notified of credential changes
     * (sign-in / sign-out, token changes). It is immediately called once with the
     * initial user.
     *
     * The change listener is invoked on the provided AsyncQueue.
     */
    setChangeListener(asyncQueue: AsyncQueue, changeListener: CredentialChangeListener): void;
    /** Removes the previously-set change listener. */
    removeChangeListener(): void;
}

/** Settings for private credentials */
declare type CredentialsSettings = FirstPartyCredentialsSettings | ProviderCredentialsSettings;

/** Represents the database ID a Firestore client is associated with. */
declare class DatabaseId {
    readonly projectId: string;
    readonly database: string;
    constructor(projectId: string, database?: string);
    get isDefaultDatabase(): boolean;
    isEqual(other: {}): boolean;
}

/**
 * @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.
 */
declare class DatabaseInfo {
    readonly databaseId: DatabaseId;
    readonly appId: string;
    readonly persistenceKey: string;
    readonly host: string;
    readonly ssl: boolean;
    readonly forceLongPolling: boolean;
    readonly autoDetectLongPolling: boolean;
    readonly useFetchStreams: boolean;
    /**
     * Constructs a DatabaseInfo using the provided host, databaseId and
     * persistenceKey.
     *
     * @param databaseId - The database to use.
     * @param appId - The Firebase App Id.
     * @param persistenceKey - A unique identifier for this Firestore's local
     * storage (used in conjunction with the databaseId).
     * @param host - The Firestore backend host to connect to.
     * @param ssl - Whether to use SSL when connecting.
     * @param forceLongPolling - Whether to use the forceLongPolling option
     * when using WebChannel as the network transport.
     * @param autoDetectLongPolling - Whether to use the detectBufferingProxy
     * option when using WebChannel as the network transport.
     * @param useFetchStreams Whether to use the Fetch API instead of
     * XMLHTTPRequest
     */
    constructor(databaseId: DatabaseId, appId: string, persistenceKey: string, host: string, ssl: boolean, forceLongPolling: boolean, autoDetectLongPolling: boolean, useFetchStreams: boolean);
}

/**
 * Datastore and its related methods are a wrapper around the external Google
 * Cloud Datastore grpc API, which provides an interface that is more convenient
 * for the rest of the client SDK architecture to consume.
 */
declare abstract class Datastore {
    abstract terminate(): void;
}

/**
 * Represents an operation scheduled to be run in the future on an AsyncQueue.
 *
 * It is created via DelayedOperation.createAndSchedule().
 *
 * Supports cancellation (via cancel()) and early execution (via skipDelay()).
 *
 * Note: We implement `PromiseLike` instead of `Promise`, as the `Promise` type
 * in newer versions of TypeScript defines `finally`, which is not available in
 * IE.
 */
declare class DelayedOperation<T extends unknown> implements PromiseLike<T> {
    private readonly asyncQueue;
    readonly timerId: TimerId;
    readonly targetTimeMs: number;
    private readonly op;
    private readonly removalCallback;
    private timerHandle;
    private readonly deferred;
    private constructor();
    /**
     * Creates and returns a DelayedOperation that has been scheduled to be
     * executed on the provided asyncQueue after the provided delayMs.
     *
     * @param asyncQueue - The queue to schedule the operation on.
     * @param id - A Timer ID identifying the type of operation this is.
     * @param delayMs - The delay (ms) before the operation should be scheduled.
     * @param op - The operation to run.
     * @param removalCallback - A callback to be called synchronously once the
     *   operation is executed or canceled, notifying the AsyncQueue to remove it
     *   from its delayedOperations list.
     *   PORTING NOTE: This exists to prevent making removeDelayedOperation() and
     *   the DelayedOperation class public.
     */
    static createAndSchedule<R extends unknown>(asyncQueue: AsyncQueue, timerId: TimerId, delayMs: number, op: () => Promise<R>, removalCallback: (op: DelayedOperation<R>) => void): DelayedOperation<R>;
    /**
     * Starts the timer. This is called immediately after construction by
     * createAndSchedule().
     */
    private start;
    /**
     * Queues the operation to run immediately (if it hasn't already been run or
     * canceled).
     */
    skipDelay(): void;
    /**
     * Cancels the operation if it hasn't already been executed or canceled. The
     * promise will be rejected.
     *
     * As long as the operation has not yet been run, calling cancel() provides a
     * guarantee that the operation will not be run.
     */
    cancel(reason?: string): void;
    then: <TResult1 = T, TResult2 = never>(onfulfilled?: ((value: T) => TResult1 | PromiseLike<TResult1>) | null | undefined, onrejected?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | null | undefined) => Promise<TResult1 | TResult2>;
    private handleDelayElapsed;
    private clearTimeout;
}

/**
 * Deletes the document referred to by the specified `DocumentReference`.
 *
 * @param reference - A reference to the document to delete.
 * @returns A Promise resolved once the document has been successfully
 * deleted from the backend (note that it won't resolve while you're offline).
 */
export declare function deleteDoc(reference: DocumentReference<unknown>): Promise<void>;

/**
 * Returns a sentinel for use with {@link @firebase/firestore/lite#(updateDoc:1)} or
 * {@link @firebase/firestore/lite#(setDoc:1)} with `{merge: true}` to mark a field for deletion.
 */
export declare function deleteField(): FieldValue;

/**
 * The direction of sorting in an order by.
 */
declare const enum Direction {
    ASCENDING = "asc",
    DESCENDING = "desc"
}

/**
 * Disables network usage for this instance. It can be re-enabled via {@link
 * enableNetwork}. While the network is disabled, any snapshot listeners,
 * `getDoc()` or `getDocs()` calls will return results from cache, and any write
 * operations will be queued until the network is restored.
 *
 * @returns A promise that is resolved once the network has been disabled.
 */
export declare function disableNetwork(firestore: FirebaseFirestore): Promise<void>;

/**
 * Gets a `DocumentReference` instance that refers to the document at the
 * specified abosulute path.
 *
 * @param firestore - A reference to the root Firestore instance.
 * @param path - A slash-separated path to a document.
 * @param pathSegments - Additional path segments that will be applied relative
 * to the first argument.
 * @throws If the final path has an odd number of segments and does not point to
 * a document.
 * @returns The `DocumentReference` instance.
 */
export declare function doc(firestore: FirebaseFirestore_2, path: string, ...pathSegments: string[]): DocumentReference<DocumentData>;

/**
 * Gets a `DocumentReference` instance that refers to a document within
 * `reference` at the specified relative path. If no path is specified, an
 * automatically-generated unique ID will be used for the returned
 * `DocumentReference`.
 *
 * @param reference - A reference to a collection.
 * @param path - A slash-separated path to a document. Has to be omitted to use
 * auto-genrated IDs.
 * @param pathSegments - Additional path segments that will be applied relative
 * to the first argument.
 * @throws If the final path has an odd number of segments and does not point to
 * a document.
 * @returns The `DocumentReference` instance.
 */
export declare function doc<T>(reference: CollectionReference<T>, path?: string, ...pathSegments: string[]): DocumentReference<T>;

/**
 * Gets a `DocumentReference` instance that refers to a document within
 * `reference` at the specified relative path.
 *
 * @param reference - A reference to a Firestore document.
 * @param path - A slash-separated path to a document.
 * @param pathSegments - Additional path segments that will be applied relative
 * to the first argument.
 * @throws If the final path has an odd number of segments and does not point to
 * a document.
 * @returns The `DocumentReference` instance.
 */
export declare function doc(reference: DocumentReference<unknown>, path: string, ...pathSegments: string[]): DocumentReference<DocumentData>;

/**
 * Represents a document in Firestore with a key, version, data and whether the
 * data has local mutations applied to it.
 */
declare interface Document_2 {
    /** The key for this document */
    readonly key: DocumentKey;
    /**
     * The version of this document if it exists or a version at which this
     * document was guaranteed to not exist.
     */
    readonly version: SnapshotVersion;
    /** The underlying data of this document or an empty value if no data exists. */
    readonly data: ObjectValue;
    /** Returns whether local mutations were applied via the mutation queue. */
    readonly hasLocalMutations: boolean;
    /** Returns whether mutations were applied based on a write acknowledgment. */
    readonly hasCommittedMutations: boolean;
    /**
     * Whether this document had a local mutation applied that has not yet been
     * acknowledged by Watch.
     */
    readonly hasPendingWrites: boolean;
    /**
     * Returns whether this document is valid (i.e. it is an entry in the
     * RemoteDocumentCache, was created by a mutation or read from the backend).
     */
    isValidDocument(): boolean;
    /**
     * Returns whether the document exists and its data is known at the current
     * version.
     */
    isFoundDocument(): boolean;
    /**
     * Returns whether the document is known to not exist at the current version.
     */
    isNoDocument(): boolean;
    /**
     * Returns whether the document exists and its data is unknown at the current
     * version.
     */
    isUnknownDocument(): boolean;
    isEqual(other: Document_2 | null | undefined): boolean;
    toString(): string;
}

/**
 * A `DocumentChange` represents a change to the documents matching a query.
 * It contains the document affected and the type of change that occurred.
 */
export declare interface DocumentChange<T = DocumentData> {
    /** The type of change ('added', 'modified', or 'removed'). */
    readonly type: DocumentChangeType;
    /** The document affected by this change. */
    readonly doc: QueryDocumentSnapshot<T>;
    /**
     * The index of the changed document in the result set immediately prior to
     * this `DocumentChange` (i.e. supposing that all prior `DocumentChange` objects
     * have been applied). Is `-1` for 'added' events.
     */
    readonly oldIndex: number;
    /**
     * The index of the changed document in the result set immediately after
     * this `DocumentChange` (i.e. supposing that all prior `DocumentChange`
     * objects and the current `DocumentChange` object have been applied).
     * Is -1 for 'removed' events.
     */
    readonly newIndex: number;
}

/**
 * The type of a `DocumentChange` may be 'added', 'removed', or 'modified'.
 */
export declare type DocumentChangeType = 'added' | 'removed' | 'modified';

declare type DocumentComparator = (doc1: Document_2, doc2: Document_2) => number;

/**
 * Document data (for use with {@link @firebase/firestore/lite#(setDoc:1)}) consists of fields mapped to
 * values.
 */
export declare interface DocumentData {
    /** A mapping between a field and its value. */
    [field: string]: any;
}

/**
 * Returns a special sentinel `FieldPath` to refer to the ID of a document.
 * It can be used in queries to sort or filter by the document ID.
 */
export declare function documentId(): FieldPath;

declare class DocumentKey {
    readonly path: ResourcePath;
    constructor(path: ResourcePath);
    static fromPath(path: string): DocumentKey;
    static fromName(name: string): DocumentKey;
    /** Returns true if the document is in the specified collectionId. */
    hasCollectionId(collectionId: string): boolean;
    isEqual(other: DocumentKey | null): boolean;
    toString(): string;
    static comparator(k1: DocumentKey, k2: DocumentKey): number;
    static isDocumentKey(path: ResourcePath): boolean;
    /**
     * Creates and returns a new document key with the given segments.
     *
     * @param segments - The segments of the path to the document
     * @returns A new instance of DocumentKey
     */
    static fromSegments(segments: string[]): DocumentKey;
}

declare type DocumentKeySet = SortedSet<DocumentKey>;

declare type DocumentMap = SortedMap<DocumentKey, Document_2>;

/**
 * A `DocumentReference` refers to a document location in a Firestore database
 * and can be used to write, read, or listen to the location. The document at
 * the referenced location may or may not exist.
 */
export declare class DocumentReference<T = DocumentData> {
    /**
     * If provided, the `FirestoreDataConverter` associated with this instance.
     */
    readonly converter: FirestoreDataConverter_2<T> | null;
    readonly _key: DocumentKey;
    /** The type of this Firestore reference. */
    readonly type = "document";
    /**
     * The {@link FirebaseFirestore} the document is in.
     * This is useful for performing transactions, for example.
     */
    readonly firestore: FirebaseFirestore_2;
    /** @hideconstructor */
    constructor(firestore: FirebaseFirestore_2, 
    /**
     * If provided, the `FirestoreDataConverter` associated with this instance.
     */
    converter: FirestoreDataConverter_2<T> | null, _key: DocumentKey);
    get _path(): ResourcePath;
    /**
     * The document's identifier within its collection.
     */
    get id(): string;
    /**
     * A string representing the path of the referenced document (relative
     * to the root of the database).
     */
    get path(): string;
    /**
     * The collection this `DocumentReference` belongs to.
     */
    get parent(): CollectionReference<T>;
    /**
     * Applies a custom data converter to this `DocumentReference`, allowing you
     * to use your own custom model objects with Firestore. When you call {@link
     * @firebase/firestore/lite#(setDoc:1)}, {@link @firebase/firestore/lite#getDoc}, etc. with the returned `DocumentReference`
     * instance, the provided converter will convert between Firestore data and
     * your custom type `U`.
     *
     * @param converter - Converts objects to and from Firestore.
     * @returns A `DocumentReference<U>` that uses the provided converter.
     */
    withConverter<U>(converter: FirestoreDataConverter_2<U>): DocumentReference<U>;
    /**
     * Removes the current converter.
     *
     * @param converter - `null` removes the current converter.
     * @returns A `DocumentReference<DocumentData>` that does not use a converter.
     */
    withConverter(converter: null): DocumentReference<DocumentData>;
}

/**
 * DocumentSet is an immutable (copy-on-write) collection that holds documents
 * in order specified by the provided comparator. We always add a document key
 * comparator on top of what is provided to guarantee document equality based on
 * the key.
 */
declare class DocumentSet {
    /**
     * Returns an empty copy of the existing DocumentSet, using the same
     * comparator.
     */
    static emptySet(oldSet: DocumentSet): DocumentSet;
    private comparator;
    private keyedMap;
    private sortedSet;
    /** The default ordering is by key if the comparator is omitted */
    constructor(comp?: DocumentComparator);
    has(key: DocumentKey): boolean;
    get(key: DocumentKey): Document_2 | null;
    first(): Document_2 | null;
    last(): Document_2 | null;
    isEmpty(): boolean;
    /**
     * Returns the index of the provided key in the document set, or -1 if the
     * document key is not present in the set;
     */
    indexOf(key: DocumentKey): number;
    get size(): number;
    /** Iterates documents in order defined by "comparator" */
    forEach(cb: (doc: Document_2) => void): void;
    /** Inserts or updates a document with the same key */
    add(doc: Document_2): DocumentSet;
    /** Deletes a document with a given key */
    delete(key: DocumentKey): DocumentSet;
    isEqual(other: DocumentSet | null | undefined): boolean;
    toString(): string;
    private copy;
}

/**
 * A `DocumentSnapshot` contains data read from a document in your Firestore
 * database. The data can be extracted with `.data()` or `.get(<field>)` to
 * get a specific field.
 *
 * For a `DocumentSnapshot` that points to a non-existing document, any data
 * access will return 'undefined'. You can use the `exists()` method to
 * explicitly verify a document's existence.
 */
export declare class DocumentSnapshot<T = DocumentData> extends DocumentSnapshot_2<T> {
    readonly _firestore: FirebaseFirestore;
    private readonly _firestoreImpl;
    /**
     *  Metadata about the `DocumentSnapshot`, including information about its
     *  source and local modifications.
     */
    readonly metadata: SnapshotMetadata;
    /** @hideconstructor protected */
    constructor(_firestore: FirebaseFirestore, userDataWriter: AbstractUserDataWriter, key: DocumentKey, document: Document_2 | null, metadata: SnapshotMetadata, converter: UntypedFirestoreDataConverter<T> | null);
    /**
     * Property of the `DocumentSnapshot` that signals whether or not the data
     * exists. True if the document exists.
     */
    exists(): this is QueryDocumentSnapshot<T>;
    /**
     * Retrieves all fields in the document as an `Object`. Returns `undefined` if
     * the document doesn't exist.
     *
     * By default, `FieldValue.serverTimestamp()` values that have not yet been
     * set to their final value will be returned as `null`. You can override
     * this by passing an options object.
     *
     * @param options - An options object to configure how data is retrieved from
     * the snapshot (for example the desired behavior for server timestamps that
     * have not yet been set to their final value).
     * @returns An `Object` containing all fields in the document or `undefined` if
     * the document doesn't exist.
     */
    data(options?: SnapshotOptions): T | undefined;
    /**
     * Retrieves the field specified by `fieldPath`. Returns `undefined` if the
     * document or field doesn't exist.
     *
     * By default, a `FieldValue.serverTimestamp()` that has not yet been set to
     * its final value will be returned as `null`. You can override this by
     * passing an options object.
     *
     * @param fieldPath - The path (for example 'foo' or 'foo.bar') to a specific
     * field.
     * @param options - An options object to configure how the field is retrieved
     * from the snapshot (for example the desired behavior for server timestamps
     * that have not yet been set to their final value).
     * @returns The data at the specified field location or undefined if no such
     * field exists in the document.
     */
    get(fieldPath: string | FieldPath, options?: SnapshotOptions): any;
}

/**
 * A `DocumentSnapshot` contains data read from a document in your Firestore
 * database. The data can be extracted with `.data()` or `.get(<field>)` to
 * get a specific field.
 *
 * For a `DocumentSnapshot` that points to a non-existing document, any data
 * access will return 'undefined'. You can use the `exists()` method to
 * explicitly verify a document's existence.
 */
declare class DocumentSnapshot_2<T = DocumentData> {
    _firestore: FirebaseFirestore_2;
    _userDataWriter: AbstractUserDataWriter;
    _key: DocumentKey;
    _document: Document_2 | null;
    _converter: UntypedFirestoreDataConverter<T> | null;
    /** @hideconstructor protected */
    constructor(_firestore: FirebaseFirestore_2, _userDataWriter: AbstractUserDataWriter, _key: DocumentKey, _document: Document_2 | null, _converter: UntypedFirestoreDataConverter<T> | null);
    /** Property of the `DocumentSnapshot` that provides the document's ID. */
    get id(): string;
    /**
     * The `DocumentReference` for the document included in the `DocumentSnapshot`.
     */
    get ref(): DocumentReference<T>;
    /**
     * Signals whether or not the document at the snapshot's location exists.
     *
     * @returns true if the document exists.
     */
    exists(): this is QueryDocumentSnapshot_2<T>;
    /**
     * Retrieves all fields in the document as an `Object`. Returns `undefined` if
     * the document doesn't exist.
     *
     * @returns An `Object` containing all fields in the document or `undefined`
     * if the document doesn't exist.
     */
    data(): T | undefined;
    /**
     * Retrieves the field specified by `fieldPath`. Returns `undefined` if the
     * document or field doesn't exist.
     *
     * @param fieldPath - The path (for example 'foo' or 'foo.bar') to a specific
     * field.
     * @returns The data at the specified field location or undefined if no such
     * field exists in the document.
     */
    get(fieldPath: string | FieldPath): any;
}

declare type DocumentVersionMap = SortedMap<DocumentKey, SnapshotVersion>;

declare interface DocumentViewChange {
    type: ChangeType;
    doc: Document_2;
}

/**
 * Attempts to enable persistent storage, if possible.
 *
 * Must be called before any other functions (other than
 * {@link initializeFirestore}, {@link getFirestore} or
 * {@link clearIndexedDbPersistence}.
 *
 * If this fails, `enableIndexedDbPersistence()` will reject the promise it
 * returns. Note that even after this failure, the `Firestore` instance will
 * remain usable, however offline persistence will be disabled.
 *
 * There are several reasons why this can fail, which can be identified by
 * the `code` on the error.
 *
 *   * failed-precondition: The app is already open in another browser tab.
 *   * unimplemented: The browser is incompatible with the offline
 *     persistence implementation.
 *
 * @param firestore - The `Firestore` instance to enable persistence for.
 * @param persistenceSettings - Optional settings object to configure
 * persistence.
 * @returns A promise that represents successfully enabling persistent storage.
 */
export declare function enableIndexedDbPersistence(firestore: FirebaseFirestore, persistenceSettings?: PersistenceSettings): Promise<void>;

/**
 * Attempts to enable multi-tab persistent storage, if possible. If enabled
 * across all tabs, all operations share access to local persistence, including
 * shared execution of queries and latency-compensated local document updates
 * across all connected instances.
 *
 * If this fails, `enableMultiTabIndexedDbPersistence()` will reject the promise
 * it returns. Note that even after this failure, the `Firestore` instance will
 * remain usable, however offline persistence will be disabled.
 *
 * There are several reasons why this can fail, which can be identified by
 * the `code` on the error.
 *
 *   * failed-precondition: The app is already open in another browser tab and
 *     multi-tab is not enabled.
 *   * unimplemented: The browser is incompatible with the offline
 *     persistence implementation.
 *
 * @param firestore - The `Firestore` instance to enable persistence for.
 * @returns A promise that represents successfully enabling persistent
 * storage.
 */
export declare function enableMultiTabIndexedDbPersistence(firestore: FirebaseFirestore): Promise<void>;

/**
 * Re-enables use of the network for this Firestore instance after a prior
 * call to {@link disableNetwork}.
 *
 * @returns A promise that is resolved once the network has been enabled.
 */
export declare function enableNetwork(firestore: FirebaseFirestore): Promise<void>;

/**
 * Creates a `QueryConstraint` that modifies the result set to end at the
 * provided document (inclusive). The end position is relative to the order of
 * the query. The document must contain all of the fields provided in the
 * orderBy of the query.
 *
 * @param snapshot - The snapshot of the document to end at.
 * @returns A `QueryConstraint` to pass to `query()`
 */
export declare function endAt(snapshot: DocumentSnapshot_2<unknown>): QueryConstraint;

/**
 * Creates a `QueryConstraint` that modifies the result set to end at the
 * provided fields relative to the order of the query. The order of the field
 * values must match the order of the order by clauses of the query.
 *
 * @param fieldValues - The field values to end this query at, in order
 * of the query's order by.
 * @returns A `QueryConstraint` to pass to `query()`
 */
export declare function endAt(...fieldValues: unknown[]): QueryConstraint;

/**
 * Creates a `QueryConstraint` that modifies the result set to end before the
 * provided document (exclusive). The end position is relative to the order of
 * the query. The document must contain all of the fields provided in the
 * orderBy of the query.
 *
 * @param snapshot - The snapshot of the document to end before.
 * @returns A `QueryConstraint` to pass to `query()`
 */
export declare function endBefore(snapshot: DocumentSnapshot_2<unknown>): QueryConstraint;

/**
 * Creates a `QueryConstraint` that modifies the result set to end before the
 * provided fields relative to the order of the query. The order of the field
 * values must match the order of the order by clauses of the query.
 *
 * @param fieldValues - The field values to end this query before, in order
 * of the query's order by.
 * @returns A `QueryConstraint` to pass to `query()`
 */
export declare function endBefore(...fieldValues: unknown[]): QueryConstraint;

/**
 * @internal
 */
export declare function ensureFirestoreConfigured(firestore: FirebaseFirestore): FirestoreClient;

declare interface Entry<K, V> {
    key: K;
    value: V;
}

/**
 * EventManager is responsible for mapping queries to query event emitters.
 * It handles "fan-out". -- Identical queries will re-use the same watch on the
 * backend.
 *
 * PORTING NOTE: On Web, EventManager `onListen` and `onUnlisten` need to be
 * assigned to SyncEngine's `listen()` and `unlisten()` API before usage. This
 * allows users to tree-shake the Watch logic.
 */
declare interface EventManager {
    onListen?: (query: Query_2) => Promise<ViewSnapshot>;
    onUnlisten?: (query: Query_2) => Promise<void>;
}

/**
 * Locally writes `mutations` on the async queue.
 * @internal
 */
export declare function executeWrite(firestore: FirebaseFirestore, mutations: Mutation[]): Promise<void>;

declare type FieldFilterOp = 'OPERATOR_UNSPECIFIED' | 'LESS_THAN' | 'LESS_THAN_OR_EQUAL' | 'GREATER_THAN' | 'GREATER_THAN_OR_EQUAL' | 'EQUAL' | 'NOT_EQUAL' | 'ARRAY_CONTAINS' | 'IN' | 'ARRAY_CONTAINS_ANY' | 'NOT_IN';

/**
 * Provides a set of fields that can be used to partially patch a document.
 * FieldMask is used in conjunction with ObjectValue.
 * Examples:
 *   foo - Overwrites foo entirely with the provided value. If foo is not
 *         present in the companion ObjectValue, the field is deleted.
 *   foo.bar - Overwrites only the field bar of the object foo.
 *             If foo is not an object, foo is replaced with an object
 *             containing foo
 */
declare class FieldMask {
    readonly fields: FieldPath_2[];
    constructor(fields: FieldPath_2[]);