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

The Cloud Firestore component of the Firebase JS SDK.

/**
 * Cloud Firestore
 *
 * @packageDocumentation
 */
import { FirebaseApp } from '@firebase/app-exp';
import { LogLevelString as LogLevel } from '@firebase/logger';
import { EmulatorMockTokenOptions } from '@firebase/util';

/**
 * 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>>;
/**
 * 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;
/**
 * An immutable object representing an array of bytes.
 */
export declare class Bytes {
    private constructor();
    /**
     * 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;
}
/**
 * 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;
/**
 * 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>;
/**
 * 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, 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, 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> {
    /** The type of this Firestore reference. */
    readonly type = "collection";
    private constructor();
    /** 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<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>;
}
/**
 * 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;
/**
 * 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, 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>;
/**
 * 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';
/**
 * 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;
/**
 * 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<T> | null;
    /** 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;
    private constructor();
    /**
     * 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<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>;
}
/**
 * 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> {
    /**
     *  Metadata about the `DocumentSnapshot`, including information about its
     *  source and local modifications.
     */
    readonly metadata: SnapshotMetadata;
    protected constructor();
    /**
     * 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;
    /**
     * 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>;
}
/**
 * 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<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<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;
/**
 * A `FieldPath` refers to a field in a document. The path may consist of a
 * single field name (referring to a top-level field in the document), or a
 * list of field names (referring to a nested field in the document).
 *
 * Create a `FieldPath` by providing field names. If more than one field
 * name is provided, the path will point to a nested field in a document.
 */
export declare class FieldPath {
    /**
     * Creates a FieldPath from the provided field names. If more than one field
     * name is provided, the path will point to a nested field in a document.
     *
     * @param fieldNames - A list of field names.
     */
    constructor(...fieldNames: string[]);
    /**
     * Returns true if this `FieldPath` is equal to the provided one.
     *
     * @param other - The `FieldPath` to compare against.
     * @returns true if this `FieldPath` is equal to the provided one.
     */
    isEqual(other: FieldPath): boolean;
}
/**
 * Sentinel values that can be used when writing document fields with `set()`
 * or `update()`.
 */
export declare abstract class FieldValue {
    private constructor();
    /** Compares `FieldValue`s for equality. */
    abstract isEqual(other: FieldValue): boolean;
}
/**
 * The Cloud Firestore service interface.
 *
 * Do not call this constructor directly. Instead, use {@link getFirestore}.
 */
export declare class FirebaseFirestore {
    type: 'firestore-lite' | 'firestore';
    private constructor();
    /**
     * The {@link @firebase/app#FirebaseApp} associated with this `Firestore` service
     * instance.
     */
    get app(): FirebaseApp;
    /**
     * Returns a JSON-serializable representation of this Firestore instance.
     */
    toJSON(): object;
}
/**
 * Converter used by `withConverter()` to transform user objects of type `T`
 * into Firestore data.
 *
 * Using the converter allows you to specify generic type arguments when
 * storing and retrieving objects from Firestore.
 *
 * @example
 * ```typescript
 * class Post {
 *   constructor(readonly title: string, readonly author: string) {}
 *
 *   toString(): string {
 *     return this.title + ', by ' + this.author;
 *   }
 * }
 *
 * const postConverter = {
 *   toFirestore(post: Post): firebase.firestore.DocumentData {
 *     return {title: post.title, author: post.author};
 *   },
 *   fromFirestore(
 *     snapshot: firebase.firestore.QueryDocumentSnapshot,
 *     options: firebase.firestore.SnapshotOptions
 *   ): Post {
 *     const data = snapshot.data(options)!;
 *     return new Post(data.title, data.author);
 *   }
 * };
 *
 * const postSnap = await firebase.firestore()
 *   .collection('posts')
 *   .withConverter(postConverter)
 *   .doc().get();
 * const post = postSnap.data();
 * if (post !== undefined) {
 *   post.title; // string
 *   post.toString(); // Should be defined
 *   post.someNonExistentProperty; // TS error
 * }
 * ```
 */
export declare interface FirestoreDataConverter<T> {
    /**
     * Called by the Firestore SDK to convert a custom model object of type `T`
     * into a plain JavaScript object (suitable for writing directly to the
     * Firestore database). To use `set()` with `merge` and `mergeFields`,
     * `toFirestore()` must be defined with `Partial<T>`.
     */
    toFirestore(modelObject: T): DocumentData;
    /**
     * Called by the Firestore SDK to convert a custom model object of type `T`
     * into a plain JavaScript object (suitable for writing directly to the
     * Firestore database). Used with {@link (setDoc:1)}, {@link (WriteBatch.set:1)}
     * and {@link (Transaction.set:1)} with `merge:true` or `mergeFields`.
     */
    toFirestore(modelObject: Partial<T>, options: SetOptions): DocumentData;
    /**
     * Called by the Firestore SDK to convert Firestore data into an object of
     * type T. You can access your data by calling: `snapshot.data(options)`.
     *
     * @param snapshot - A `QueryDocumentSnapshot` containing your data and metadata.
     * @param options - The `SnapshotOptions` from the initial call to `data()`.
     */
    fromFirestore(snapshot: QueryDocumentSnapshot<DocumentData>, options?: SnapshotOptions): T;
}
/** An error returned by a Firestore operation. */
export declare class FirestoreError extends Error {
    /**
     * The backend error code associated with this error.
     */
    readonly code: FirestoreErrorCode;
    /**
     * A custom error description.
     */
    readonly message: string;
    /** The custom name for all FirestoreErrors. */
    readonly name: string;
    /** The stack of the error. */
    readonly stack?: string;
    private constructor();
}
/**
 * @license
 * Copyright 2017 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * The set of Firestore status codes. The codes are the same at the ones
 * exposed by gRPC here:
 * https://github.com/grpc/grpc/blob/master/doc/statuscodes.md
 *
 * Possible values:
 * - 'cancelled': The operation was cancelled (typically by the caller).
 * - 'unknown': Unknown error or an error from a different error domain.
 * - 'invalid-argument': Client specified an invalid argument. Note that this
 *   differs from 'failed-precondition'. 'invalid-argument' indicates
 *   arguments that are problematic regardless of the state of the system
 *   (e.g. an invalid field name).
 * - 'deadline-exceeded': Deadline expired before operation could complete.
 *   For operations that change the state of the system, this error may be
 *   returned even if the operation has completed successfully. For example,
 *   a successful response from a server could have been delayed long enough
 *   for the deadline to expire.
 * - 'not-found': Some requested document was not found.
 * - 'already-exists': Some document that we attempted to create already
 *   exists.
 * - 'permission-denied': The caller does not have permission to execute the
 *   specified operation.
 * - 'resource-exhausted': Some resource has been exhausted, perhaps a
 *   per-user quota, or perhaps the entire file system is out of space.
 * - 'failed-precondition': Operation was rejected because the system is not
 *   in a state required for the operation's execution.
 * - 'aborted': The operation was aborted, typically due to a concurrency
 *   issue like transaction aborts, etc.
 * - 'out-of-range': Operation was attempted past the valid range.
 * - 'unimplemented': Operation is not implemented or not supported/enabled.
 * - 'internal': Internal errors. Means some invariants expected by
 *   underlying system has been broken. If you see one of these errors,
 *   something is very broken.
 * - 'unavailable': The service is currently unavailable. This is most likely
 *   a transient condition and may be corrected by retrying with a backoff.
 * - 'data-loss': Unrecoverable data loss or corruption.
 * - 'unauthenticated': The request does not have valid authentication
 *   credentials for the operation.
 */
export declare type FirestoreErrorCode = 'cancelled' | 'unknown' | 'invalid-argument' | 'deadline-exceeded' | 'not-found' | 'already-exists' | 'permission-denied' | 'resource-exhausted' | 'failed-precondition' | 'aborted' | 'out-of-range' | 'unimplemented' | 'internal' | 'unavailable' | 'data-loss' | 'unauthenticated';
/**
 * @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 geographic location in Firestore. The
 * location is represented as latitude/longitude pair.
 *
 * Latitude values are in the range of [-90, 90].
 * Longitude values are in the range of [-180, 180].
 */
export declare class GeoPoint {
    /**
     * Creates a new immutable `GeoPoint` object with the provided latitude and
     * longitude values.
     * @param latitude - The latitude as number between -90 and 90.
     * @param longitude - The longitude as number between -180 and 180.
     */
    constructor(latitude: number, longitude: number);
    /**
     * The latitude of this `GeoPoint` instance.
     */
    get latitude(): number;
    /**
     * The longitude of this `GeoPoint` instance.
     */
    get longitude(): number;
    /**
     * Returns true if this `GeoPoint` is equal to the provided one.
     *
     * @param other - The `GeoPoint` to compare against.
     * @returns true if this `GeoPoint` is equal to the provided one.
     */
    isEqual(other: GeoPoint): boolean;
    /** Returns a JSON-serializable representation of this GeoPoint. */
    toJSON(): {
        latitude: number;
        longitude: number;
    };
}
/**
 * Reads the document referred to by this `DocumentReference`.
 *
 * Note: `getDoc()` attempts to provide up-to-date data when possible by waiting
 * for data from the server, but it may return cached data or fail if you are
 * offline and the server cannot be reached. To specify this behavior, invoke
 * {@link getDocFromCache} or {@link getDocFromServer}.
 *
 * @param reference - The reference of the document to fetch.
 * @returns A Promise resolved with a `DocumentSnapshot` containing the
 * current document contents.
 */
export declare function getDoc<T>(reference: DocumentReference<T>): Promise<DocumentSnapshot<T>>;
/**
 * Reads the document referred to by this `DocumentReference` from cache.
 * Returns an error if the document is not currently cached.
 *
 * @returns A Promise resolved with a `DocumentSnapshot` containing the
 * current document contents.
 */
export declare function getDocFromCache<T>(reference: DocumentReference<T>): Promise<DocumentSnapshot<T>>;
/**
 * Reads the document referred to by this `DocumentReference` from the server.
 * Returns an error if the network is not available.
 *
 * @returns A Promise resolved with a `DocumentSnapshot` containing the
 * current document contents.
 */
export declare function getDocFromServer<T>(reference: DocumentReference<T>): Promise<DocumentSnapshot<T>>;
/**
 * Executes the query and returns the results as a `QuerySnapshot`.
 *
 * Note: `getDocs()` attempts to provide up-to-date data when possible by
 * waiting for data from the server, but it may return cached data or fail if
 * you are offline and the server cannot be reached. To specify this behavior,
 * invoke {@link getDocsFromCache} or {@link getDocsFromServer}.
 *
 * @returns A Promise that will be resolved with the results of the query.
 */
export declare function getDocs<T>(query: Query<T>): Promise<QuerySnapshot<T>>;
/**
 * Executes the query and returns the results as a `QuerySnapshot` from cache.
 * Returns an error if the document is not currently cached.
 *
 * @returns A Promise that will be resolved with the results of the query.
 */
export declare function getDocsFromCache<T>(query: Query<T>): Promise<QuerySnapshot<T>>;
/**
 * Executes the query and returns the results as a `QuerySnapshot` from the
 * server. Returns an error if the network is not available.
 *
 * @returns A Promise that will be resolved with the results of the query.
 */
export declare function getDocsFromServer<T>(query: Query<T>): Promise<QuerySnapshot<T>>;
/**
 * Returns the existing instance of Firestore that is associated with the
 * provided {@link @firebase/app#FirebaseApp}. If no instance exists, initializes a new
 * instance with default settings.
 *
 * @param app - The {@link @firebase/app#FirebaseApp} instance that the returned Firestore
 * instance is associated with.
 * @returns The `Firestore` instance of the provided app.
 */
export declare function getFirestore(app?: FirebaseApp): FirebaseFirestore;
/**
 * 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 increment the field's current value by
 * the given value.
 *
 * If either the operand or the current field value uses floating point
 * precision, all arithmetic follows IEEE 754 semantics. If both values are
 * integers, values outside of JavaScript's safe number range
 * (`Number.MIN_SAFE_INTEGER` to `Number.MAX_SAFE_INTEGER`) are also subject to
 * precision loss. Furthermore, once processed by the Firestore backend, all
 * integer operations are capped between -2^63 and 2^63-1.
 *
 * If the current field value is not of type `number`, or if the field does not
 * yet exist, the transformation sets the field to the given value.
 *
 * @param n - The value to increment by.
 * @returns The `FieldValue` sentinel for use in a call to `setDoc()` or
 * `updateDoc()`
 */
export declare function increment(n: number): FieldValue;
/**
 * Initializes a new instance of Cloud Firestore with the provided settings.
 * Can only be called before any other function, including
 * {@link getFirestore}. If the custom settings are empty, this function is
 * equivalent to calling {@link getFirestore}.
 *
 * @param app - The {@link @firebase/app#FirebaseApp} with which the `Firestore` instance will
 * be associated.
 * @param settings - A settings object to configure the `Firestore` instance.
 * @returns A newly initialized `Firestore` instance.
 */
export declare function initializeFirestore(app: FirebaseApp, settings: Settings): FirebaseFirestore;
/**
 * Creates a `QueryConstraint` that only returns the first matching documents.
 *
 * @param limit - The maximum number of items to return.
 * @returns The created `Query`.
 */
export declare function limit(limit: number): QueryConstraint;
/**
 * Creates a `QueryConstraint` that only returns the last matching documents.
 *
 * You must specify at least one `orderBy` clause for `limitToLast` queries,
 * otherwise an exception will be thrown during execution.
 *
 * @param limit - The maximum number of items to return.
 * @returns The created `Query`.
 */
export declare function limitToLast(limit: number): QueryConstraint;
/**
 * Loads a Firestore bundle into the local cache.
 *
 * @param firestore - The `Firestore` instance to load bundles for for.
 * @param bundleData - An object representing the bundle to be loaded. Valid objects are
 *   `ArrayBuffer`, `ReadableStream<Uint8Array>` or `string`.
 *
 * @returns
 *   A `LoadBundleTask` object, which notifies callers with progress updates, and completion
 *   or error events. It can be used as a `Promise<LoadBundleTaskProgress>`.
 */
export declare function loadBundle(firestore: FirebaseFirestore, bundleData: ReadableStream<Uint8Array> | ArrayBuffer | string): LoadBundleTask;
/**
 * Represents the task of loading a Firestore bundle. It provides progress of bundle
 * loading, as well as task completion and error events.
 *
 * The API is compatible with `Promise<LoadBundleTaskProgress>`.
 */
export declare class LoadBundleTask implements PromiseLike<LoadBundleTaskProgress> {
    /**
     * Registers functions to listen to bundle loading progress events.
     * @param next - Called when there is a progress update from bundle loading. Typically `next` calls occur
     *   each time a Firestore document is loaded from the bundle.
     * @param error - Called when an error occurs during bundle loading. The task aborts after reporting the
     *   error, and there should be no more updates after this.
     * @param complete - Called when the loading task is complete.
     */
    onProgress(next?: (progress: LoadBundleTaskProgress) => unknown, error?: (err: Error) => unknown, complete?: () => void): void;
    /**
     * Implements the `Promise<LoadBundleTaskProgress>.catch` interface.
     *
     * @param onRejected - Called when an error occurs during bundle loading.
     */
    catch<R>(onRejected: (a: Error) => R | PromiseLike<R>): Promise<R | LoadBundleTaskProgress>;
    /**
     * Implements the `Promise<LoadBundleTaskProgress>.then` interface.
     *
     * @param onFulfilled - Called on the completion of the loading task with a final `LoadBundleTaskProgress` update.
     *   The update will always have its `taskState` set to `"Success"`.
     * @param onRejected - Called when an error occurs during bundle loading.
     */
    then<T, R>(onFulfilled?: (a: LoadBundleTaskProgress) => T | PromiseLike<T>, onRejected?: (a: Error) => R | PromiseLike<R>): Promise<T | R>;
}
/**
 * Represents a progress update or a final state from loading bundles.
 */
export declare interface LoadBundleTaskProgress {
    /** How many documents have been loaded. */
    documentsLoaded: number;
    /** How many documents are in the bundle being loaded. */
    totalDocuments: number;
    /** How many bytes have been loaded. */
    bytesLoaded: number;
    /** How many bytes are in the bundle being loaded. */
    totalBytes: number;
    /** Current task state. */
    taskState: TaskState;
}
export { LogLevel };
/**
 * Reads a Firestore `Query` from local cache, identified by the given name.
 *
 * The named queries are packaged  into bundles on the server side (along
 * with resulting documents), and loaded to local cache using `loadBundle`. Once in local
 * cache, use this method to extract a `Query` by name.
 */
export declare function namedQuery(firestore: FirebaseFirestore, name: string): Promise<Query | null>;
/**
 * Attaches a listener for `DocumentSnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param reference - A reference to the document to listen to.
 * @param observer - A single object containing `next` and `error` callbacks.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(reference: DocumentReference<T>, observer: {
    next?: (snapshot: DocumentSnapshot<T>) => void;
    error?: (error: FirestoreError) => void;
    complete?: () => void;
}): Unsubscribe;
/**
 * Attaches a listener for `DocumentSnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param reference - A reference to the document to listen to.
 * @param options - Options controlling the listen behavior.
 * @param observer - A single object containing `next` and `error` callbacks.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(reference: DocumentReference<T>, options: SnapshotListenOptions, observer: {
    next?: (snapshot: DocumentSnapshot<T>) => void;
    error?: (error: FirestoreError) => void;
    complete?: () => void;
}): Unsubscribe;
/**
 * Attaches a listener for `DocumentSnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param reference - A reference to the document to listen to.
 * @param onNext - A callback to be called every time a new `DocumentSnapshot`
 * is available.
 * @param onError - A callback to be called if the listen fails or is
 * cancelled. No further callbacks will occur.
 * @param onCompletion - Can be provided, but will not be called since streams are
 * never ending.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(reference: DocumentReference<T>, onNext: (snapshot: DocumentSnapshot<T>) => void, onError?: (error: FirestoreError) => void, onCompletion?: () => void): Unsubscribe;
/**
 * Attaches a listener for `DocumentSnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param reference - A reference to the document to listen to.
 * @param options - Options controlling the listen behavior.
 * @param onNext - A callback to be called every time a new `DocumentSnapshot`
 * is available.
 * @param onError - A callback to be called if the listen fails or is
 * cancelled. No further callbacks will occur.
 * @param onCompletion - Can be provided, but will not be called since streams are
 * never ending.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(reference: DocumentReference<T>, options: SnapshotListenOptions, onNext: (snapshot: DocumentSnapshot<T>) => void, onError?: (error: FirestoreError) => void, onCompletion?: () => void): Unsubscribe;
/**
 * Attaches a listener for `QuerySnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks. The listener can be cancelled by
 * calling the function that is returned when `onSnapshot` is called.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param query - The query to listen to.
 * @param observer - A single object containing `next` and `error` callbacks.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(query: Query<T>, observer: {
    next?: (snapshot: QuerySnapshot<T>) => void;
    error?: (error: FirestoreError) => void;
    complete?: () => void;
}): Unsubscribe;
/**
 * Attaches a listener for `QuerySnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks. The listener can be cancelled by
 * calling the function that is returned when `onSnapshot` is called.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param query - The query to listen to.
 * @param options - Options controlling the listen behavior.
 * @param observer - A single object containing `next` and `error` callbacks.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(query: Query<T>, options: SnapshotListenOptions, observer: {
    next?: (snapshot: QuerySnapshot<T>) => void;
    error?: (error: FirestoreError) => void;
    complete?: () => void;
}): Unsubscribe;
/**
 * Attaches a listener for `QuerySnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks. The listener can be cancelled by
 * calling the function that is returned when `onSnapshot` is called.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param query - The query to listen to.
 * @param onNext - A callback to be called every time a new `QuerySnapshot`
 * is available.
 * @param onCompletion - Can be provided, but will not be called since streams are
 * never ending.
 * @param onError - A callback to be called if the listen fails or is
 * cancelled. No further callbacks will occur.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(query: Query<T>, onNext: (snapshot: QuerySnapshot<T>) => void, onError?: (error: FirestoreError) => void, onCompletion?: () => void): Unsubscribe;
/**
 * Attaches a listener for `QuerySnapshot` events. You may either pass
 * individual `onNext` and `onError` callbacks or pass a single observer
 * object with `next` and `error` callbacks. The listener can be cancelled by
 * calling the function that is returned when `onSnapshot` is called.
 *
 * NOTE: Although an `onCompletion` callback can be provided, it will
 * never be called because the snapshot stream is never-ending.
 *
 * @param query - The query to listen to.
 * @param options - Options controlling the listen behavior.
 * @param onNext - A callback to be called every time a new `QuerySnapshot`
 * is available.
 * @param onCompletion - Can be provided, but will not be called since streams are
 * never ending.
 * @param onError - A callback to be called if the listen fails or is
 * cancelled. No further callbacks will occur.
 * @returns An unsubscribe function that can be called to cancel
 * the snapshot listener.
 */
export declare function onSnapshot<T>(query: Query<T>, options: SnapshotListenOptions, onNext: (snapshot: QuerySnapshot<T>) => void, onError?: (error: FirestoreError) => void, onCompletion?: () => void): Unsubscribe;
/**
 * Attaches a listener for a snapshots-in-sync event. The snapshots-in-sync
 * event indicates that all listeners affected by a given change have fired,
 * even if a single server-generated change affects multiple listeners.
 *
 * NOTE: The snapshots-in-sync event only indicates that listeners are in sync
 * with each other, but does not relate to whether those snapshots are in sync
 * with the server. Use SnapshotMetadata in the individual listeners to
 * determine if a snapshot is from the cache or the server.
 *
 * @param firestore - The instance of Firestore for synchronizing snapshots.
 * @param observer - A single object containing `next` and `error` callbacks.
 * @returns An unsubscribe function that can be called to cancel the snapshot
 * listener.
 */
export declare function onSnapshotsInSync(firestore: FirebaseFirestore, observer: {
    next?: (value: void) => void;
    error?: (error: FirestoreError) => void;
    complete?: () => void;
}): Unsubscribe;
/**
 * Attaches a listener for a snapshots-in-sync event. The snapshots-in-sync
 * event indicates that all listeners affected by a given change have fired,
 * even if a single server-generated change affects multiple listeners.
 *
 * NOTE: The snapshots-in