import { CancellationToken } from '../cancellation';
import { CancelablePromise } from './cancelable';
export declare function raceCancellation<T>(promise: Promise<T>, token: CancellationToken): Promise<T | undefined>;
export declare function raceCancellation<T>(promise: Promise<T>, token: CancellationToken, defaultValue: T): Promise<T>;
/**
 * Returns as soon as one of the promises is resolved and cancels remaining promises
 */
export declare function raceCancellablePromises<T>(cancellablePromises: CancelablePromise<T>[]): Promise<T>;
export declare function raceTimeout<T>(promise: Promise<T>, timeout: number, onTimeout?: () => void): Promise<T | undefined>;