import { Cause } from "@effect/core/io/Cause/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Stack } from "@tsplus/stdlib/data/Stack";
/**
 * Folds over the cause to statefully compute a value.
 * @tsplus static effect/core/io/Cause.Aspects foldLeft
 * @tsplus pipeable effect/core/io/Cause foldLeft
 * @tsplus location "@effect/core/io/Cause/operations/foldLeft"
 */
export declare function foldLeft<E, Z>(initial: Z, f: (z: Z, cause: Cause<E>) => Maybe<Z>): (self: Cause<E>) => Z;
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