/**
 * Copyright (c) Microsoft Corporation.
 *
 * 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 declare class ManualPromise<T = void> extends Promise<T> {
    private _resolve;
    private _reject;
    private _isDone;
    constructor();
    isDone(): boolean;
    resolve(t: T): void;
    reject(e: Error): void;
    static get [Symbol.species](): PromiseConstructor;
    get [Symbol.toStringTag](): string;
}
export declare class LongStandingScope {
    private _terminateError;
    private _closeError;
    private _terminatePromises;
    private _isClosed;
    reject(error: Error): void;
    close(error: Error): void;
    isClosed(): boolean;
    static raceMultiple<T>(scopes: LongStandingScope[], promise: Promise<T>): Promise<T>;
    race<T>(promise: Promise<T> | Promise<T>[]): Promise<T>;
    safeRace<T>(promise: Promise<T>, defaultValue: T): Promise<T>;
    safeRace<T>(promise: Promise<T>): Promise<T | undefined>;
    private _race;
}
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