export declare enum DeferredStatus {
    PENDING = "PENDING",
    FULFILLED = "FULFILLED",
    REJECTED = "REJECTED",
    CANCELED = "CANCELED"
}
/**
 * A deferred promise that can be resolved or rejected
 * externally, ideal for functions like a promise timeout
 */
export declare class Deferred<T> {
    static delay(millis: number): Promise<void>;
    static resolve<T>(value?: T): Deferred<T>;
    private readonly state;
    readonly promise: Promise<T>;
    constructor(promise?: Promise<T> | undefined);
    isFulfilled(): boolean;
    isRejected(): boolean;
    isSettled(): boolean;
    isCancelled(): boolean;
    status(): DeferredStatus;
    cancel(): void;
    resolve(result?: T): void;
    reject(err: any): void;
    get error(): Error;
    get value(): T;
    getError(): Error | undefined;
    getResult(): T;
}
export default Deferred;