/**
 * @license
 * Copyright 2020 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { Compat } from '@firebase/util';
import { Mutation } from '../model/mutation';
import { FirebaseFirestore } from './database';
import { FieldPath } from './field_path';
import { DocumentReference, SetOptions, UpdateData } from './reference';
/**
 * A write batch, used to perform multiple writes as a single atomic unit.
 *
 * A `WriteBatch` object can be acquired by calling {@link writeBatch}. It
 * provides methods for adding writes to the write batch. None of the writes
 * will be committed (or visible locally) until {@link WriteBatch.commit} is
 * called.
 */
export declare class WriteBatch {
    private readonly _firestore;
    private readonly _commitHandler;
    private readonly _dataReader;
    private _mutations;
    private _committed;
    /** @hideconstructor */
    constructor(_firestore: FirebaseFirestore, _commitHandler: (m: Mutation[]) => Promise<void>);
    /**
     * Writes to the document referred to by the provided {@link
     * DocumentReference}. If the document does not exist yet, it will be created.
     *
     * @param documentRef - A reference to the document to be set.
     * @param data - An object of the fields and values for the document.
     * @returns This `WriteBatch` instance. Used for chaining method calls.
     */
    set<T>(documentRef: DocumentReference<T>, data: T): WriteBatch;
    /**
     * Writes to the document referred to by the provided {@link
     * DocumentReference}. If the document does not exist yet, it will be created.
     * If you provide `merge` or `mergeFields`, the provided data can be merged
     * into an existing document.
     *
     * @param documentRef - A reference to the document to be set.
     * @param data - An object of the fields and values for the document.
     * @param options - An object to configure the set behavior.
     * @returns This `WriteBatch` instance. Used for chaining method calls.
     */
    set<T>(documentRef: DocumentReference<T>, data: Partial<T>, options: SetOptions): WriteBatch;
    /**
     * Updates fields in the document referred to by the provided {@link
     * DocumentReference}. The update will fail if applied to a document that does
     * not exist.
     *
     * @param documentRef - A reference to the document to be updated.
     * @param data - An object containing the fields and values with which to
     * update the document. Fields can contain dots to reference nested fields
     * within the document.
     * @returns This `WriteBatch` instance. Used for chaining method calls.
     */
    update(documentRef: DocumentReference<unknown>, data: UpdateData): WriteBatch;
    /**
     * Updates fields in the document referred to by this {@link
     * DocumentReference}. The update will fail if applied to a document that does
     * not exist.
     *
     * Nested fields can be update by providing dot-separated field path strings
     * or by providing `FieldPath` objects.
     *
     * @param documentRef - A reference to the document to be updated.
     * @param field - The first field to update.
     * @param value - The first value.
     * @param moreFieldsAndValues - Additional key value pairs.
     * @returns This `WriteBatch` instance. Used for chaining method calls.
     */
    update(documentRef: DocumentReference<unknown>, field: string | FieldPath, value: unknown, ...moreFieldsAndValues: unknown[]): WriteBatch;
    /**
     * Deletes the document referred to by the provided {@link DocumentReference}.
     *
     * @param documentRef - A reference to the document to be deleted.
     * @returns This `WriteBatch` instance. Used for chaining method calls.
     */
    delete(documentRef: DocumentReference<unknown>): WriteBatch;
    /**
     * Commits all of the writes in this write batch as a single atomic unit.
     *
     * The result of these writes will only be reflected in document reads that
     * occur after the returned Promise resolves. If the client is offline, the
     * write fails. If you would like to see local modifications or buffer writes
     * until the client is online, use the full Firestore SDK.
     *
     * @returns A Promise resolved once all of the writes in the batch have been
     * successfully written to the backend as an atomic unit (note that it won't
     * resolve while you're offline).
     */
    commit(): Promise<void>;
    private _verifyNotCommitted;
}
export declare function validateReference<T>(documentRef: DocumentReference<T> | Compat<DocumentReference<T>>, firestore: FirebaseFirestore): DocumentReference<T>;
/**
 * Creates a write batch, used for performing multiple writes as a single
 * atomic operation. The maximum number of writes allowed in a single WriteBatch
 * is 500.
 *
 * The result of these writes will only be reflected in document reads that
 * occur after the returned Promise resolves. If the client is offline, the
 * write fails. If you would like to see local modifications or buffer writes
 * until the client is online, use the full Firestore SDK.
 *
 * @returns A `WriteBatch` that can be used to atomically execute multiple
 * writes.
 */
export declare function writeBatch(firestore: FirebaseFirestore): WriteBatch;
