import { CancellationToken } from '../cancellation';
export interface CancelablePromise<T> extends Promise<T> {
    isCanceled(): boolean;
    cancel(): void;
}
export type CallbackWithToken<T> = (token: CancellationToken) => Promise<T>;
export declare function createCancelablePromise<T>(parent: CancellationToken | undefined, callback: CallbackWithToken<T>): CancelablePromise<T>;
export declare function createCancelablePromise<T>(callback: CallbackWithToken<T>): CancelablePromise<T>;