/**
 * Copyright 2023 Google LLC.
 * Copyright (c) Microsoft Corporation.
 * Copyright 2022 The Chromium Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
export type ReleaseFunction = () => void;
/**
 * Use Mutex class to coordinate local concurrent operations.
 * Once `acquire` promise resolves, you hold the lock and must
 * call `release` function returned by `acquire` to release the
 * lock. Failing to `release` the lock may lead to deadlocks.
 */
export declare class Mutex {
    #private;
    acquire(): Promise<ReleaseFunction>;
    run<T>(action: () => Promise<T>): Promise<T>;
}