export type ProgressPromiseSubscription = {
    unsubscribe: () => void;
};
export type ProgressPromiseObserver<StatusT, ResultT> = {
    next?: (t: StatusT) => void;
    error?: (error: Error) => void;
    complete?: (t: ResultT) => void;
};
export type ProgressPromiseConstructor<StatusT, ResultT> = (progress: (status: StatusT) => void, resolve: (result: ResultT) => void, reject: (error: Error) => void) => void;
export declare class ProgressPromise<StatusT, ResultT> {
    #private;
    constructor(callbackFn: ProgressPromiseConstructor<StatusT, ResultT>);
    subscribe(observer: ProgressPromiseObserver<StatusT, ResultT>): ProgressPromiseSubscription;
    then(resolve: (result: ResultT) => void, reject: (error: Error) => void): void;
    catch(cb: (error: Error) => void): void;
    finally(cb: () => void): void;
}
//# sourceMappingURL=ProgressPromise.d.ts.map