/**
 * Similar to Deferred object, which is also a promise itself (instead of deferred.promise).
 */
export interface DeferredPromise<T = void> extends Promise<T> {
    resolve: (a?: T) => void;
    reject: (err?: Error) => void;
    /**
     * Can be overridden.
     * Otherwise will reject with "Aborted" or "Aborted: $reason" on abort().
     *
     * @experimental
     */
    abort: (reason?: string) => void;
    /**
     * Rejects the promise with `new Error('Aborted: $reason')`.
     *
     * @experimental
     */
    rejectAborted: (reason?: string) => void;
}
/**
 * Returns DeferredPromise - a Promise that has .resolve() and .reject() methods.
 */
export declare function pDefer<T = void>(): DeferredPromise<T>;