import * as TE from 'fp-ts/lib/TaskEither';
import { TaskEitherError } from './types';
export declare const completeHandler: <Left, Right>(success: (s: Right) => void, failure: (f: Left) => void) => (task: TE.TaskEither<Left, Right>) => void;
export declare const onComplete: <Left, Right>(task: TE.TaskEither<Left, Right>, success: (s: Right) => void, failure: (f: Left) => void) => void;
export declare const finallyHandler: <Left, Right>(fn: () => void) => (task: TE.TaskEither<Left, Right>) => TE.TaskEither<Left, Right>;
export declare const toPromise: <T>(task: TaskEitherError<T>) => Promise<T>;
export declare const sequenceTasks: <T1, T2>(t1: TaskEitherError<T1>, t2: TaskEitherError<T2>) => TaskEitherError<readonly [T1, T2]>;
export declare const sequence3Tasks: <T1, T2, T3>(t1: TaskEitherError<T1>, t2: TaskEitherError<T2>, t3: TaskEitherError<T3>) => TaskEitherError<readonly [T1, T2, T3]>;
export declare const chainTasks: <T1, T2>(t1: TaskEitherError<T1>, t2: (v: T1) => TaskEitherError<T2>) => TaskEitherError<T2>;