import { TSet } from "@effect/core/stm/TSet/definition";
import { STM } from "@effect/core/stm/STM/definition/base";
/**
 * Atomically folds using a pure function.
 * @tsplus static effect/core/stm/TSet.Aspects fold
 * @tsplus pipeable effect/core/stm/TSet fold
 * @tsplus location "@effect/core/stm/TSet/operations/fold"
 */
export declare function fold<A, B>(zero: B, op: (acc: B, a: A) => B): (self: TSet<A>) => STM<never, never, B>;
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