@firebase/firestore/dist/src/remote/remote_syncer.d.ts

This is the [Cloud Firestore](https://firebase.google.com/docs/firestore/) component of the [Firebase JS SDK](https://www.npmjs.com/package/firebase).

/**
 * @license
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { BatchId, TargetId } from '../core/types';
import { DocumentKeySet } from '../model/collections';
import { MutationBatchResult } from '../model/mutation_batch';
import { FirestoreError } from '../util/error';
import { RemoteEvent } from './remote_event';
/**
 * An interface that describes the actions the RemoteStore needs to perform on
 * a cooperating synchronization engine.
 */
export interface RemoteSyncer {
    /**
     * Applies one remote event to the sync engine, notifying any views of the
     * changes, and releasing any pending mutation batches that would become
     * visible because of the snapshot version the remote event contains.
     */
    applyRemoteEvent(remoteEvent: RemoteEvent): Promise<void>;
    /**
     * Rejects the listen for the given targetID. This can be triggered by the
     * backend for any active target.
     *
     * @param targetId The targetID corresponds to one previously initiated by the
     * user as part of TargetData passed to listen() on RemoteStore.
     * @param error A description of the condition that has forced the rejection.
     * Nearly always this will be an indication that the user is no longer
     * authorized to see the data matching the target.
     */
    rejectListen(targetId: TargetId, error: FirestoreError): Promise<void>;
    /**
     * Applies the result of a successful write of a mutation batch to the sync
     * engine, emitting snapshots in any views that the mutation applies to, and
     * removing the batch from the mutation queue.
     */
    applySuccessfulWrite(result: MutationBatchResult): Promise<void>;
    /**
     * Rejects the batch, removing the batch from the mutation queue, recomputing
     * the local view of any documents affected by the batch and then, emitting
     * snapshots with the reverted value.
     */
    rejectFailedWrite(batchId: BatchId, error: FirestoreError): Promise<void>;
    /**
     * Returns the set of remote document keys for the given target ID. This list
     * includes the documents that were assigned to the target when we received
     * the last snapshot.
     */
    getRemoteKeysForTarget(targetId: TargetId): DocumentKeySet;
}