type ResolveValue<T> = T | PromiseLike<T>;
type Resolve<T> = (value: ResolveValue<T>) => void;
type Reject = (reason?: any) => void;
type Executor<T> = (resolve: Resolve<T>, reject: Reject) => void;
declare const Promise: PromiseConstructor;
declare class MutablePromise<T> extends Promise<T> {
    private _s;
    get status(): string;
    get isPending(): boolean;
    get isFulfilled(): boolean;
    get isRejected(): boolean;
    private _task;
    get task(): PromiseLike<T> | Executor<T> | null;
    set task(value: PromiseLike<T> | Executor<T> | null);
    get isEmpty(): boolean;
    resolve: Resolve<T>;
    reject: Reject;
    then: (onfulfilled?: (value: T) => any, onrejected?: (reason: any) => any) => Promise<any>;
    constructor(executor?: PromiseLike<T> | Executor<T> | null);
}
export default MutablePromise;
export { Resolve, Reject, ResolveValue, Executor };
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