import type { Task } from "../Task/model";
import type * as C from "./Cause";
import type { Exit } from "./model";
export declare const fold_: <E, A, B>(exit: Exit<E, A>, onFailure: (e: C.Cause<E>) => B, onSuccess: (a: A) => B) => B;
export declare const fold: <E, A, B>(
   onFailure: (e: C.Cause<E>) => B,
   onSuccess: (a: A) => B
) => (exit: Exit<E, A>) => B;
/**
 * Folds over the value or cause.
 */
export declare const foldTask_: <E, A, R1, E1, A1, R2, E2, A2>(
   exit: Exit<E, A>,
   onFailure: (e: C.Cause<E>) => Task<R1, E1, A1>,
   onSuccess: (a: A) => Task<R2, E2, A2>
) => Task<R1 & R2, E1 | E2, A1 | A2>;
export declare const foldTask: <E, A, R1, E1, A1, R2, E2, A2>(
   onFailure: (e: C.Cause<E>) => Task<R1, E1, A1>,
   onSuccess: (a: A) => Task<R2, E2, A2>
) => (exit: Exit<E, A>) => Task<R1 & R2, E1 | E2, A1 | A2>;
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