/**
  Helpers to make it easier to test `Maybe` and `Result`.

  @module
 */
import Maybe from './maybe.js';
import Result from './result.js';
/** Unwrap the contained `Just` value. Throws if `maybe` is `Nothing`. */
export declare function unwrap<T>(maybe: Maybe<T>): T;
/** Unwrap the contained `Ok` value. Throws if `result` is `Err`. */
export declare function unwrap<T, E>(result: Result<T, E>): T;
/** Unwrap the contained `Err` error. Throws if `result` is `Ok`. */
export declare function unwrapErr<E>(result: Result<unknown, E>): E;
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