export declare const PENDING: unique symbol;
export declare const FULFILLED: unique symbol;
export declare const REJECTED: unique symbol;
export declare enum DeferredState {
    PENDING = 0,
    FULFILLED = 1,
    REJECTED = 2
}
export default class Deferred<T> {
    promise: Promise<T>;
    resolve: (value?: T | PromiseLike<T>) => void;
    reject: (value?: T | PromiseLike<T>) => void;
    state?: DeferredState;
    constructor();
    static create(): Deferred<unknown>;
}