import * as T from "../../Task/_core";
import type { XPromise } from "../model";
/**
 * Fails the promise with the specified error, which will be propagated to all
 * fibers waiting on the value of the promise.
 */
export declare const fail: <E>(e: E) => <A>(promise: XPromise<E, A>) => T.IO<boolean>;
//# sourceMappingURL=fail.d.ts.map