import { TArray } from "@effect/core/stm/TArray/definition";
import { USTM } from "@effect/core/stm/STM/definition/base";
/**
 * Updates element in the array with given function.
 * @tsplus fluent ets/TArray update
 * @tsplus location "@effect/core/stm/TArray/operations/update"
 */
export declare function update_<A>(self: TArray<A>, index: number, f: (a: A) => A): USTM<void>;
/**
 * Updates element in the array with given function.
 * @tsplus static ets/TArray/Aspects update
 * @tsplus pipeable ets/TArray update
 * @tsplus location "@effect/core/stm/TArray/operations/update"
 */
export declare const update: <A>(index: number, f: (a: A) => A) => (self: import("../definition").TArray<A>) => import("../../STM").USTM<void>;
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