/**
 * Misc utils.
 */
export declare type Deferred<T = void> = Promise<T> & {
    resolve: (value?: T | PromiseLike<T>) => void;
    reject: (reason?: any) => void;
};
export declare function defer<T>(): Deferred<T>;
export declare namespace defer {
    type Deferred<T> = import('./utils').Deferred<T>;
}