import { STM } from "@effect/core/stm/STM/definition/base";
/**
 * "Peeks" at the error of the transactional effect.
 * @tsplus static effect/core/stm/STM.Aspects tapError
 * @tsplus pipeable effect/core/stm/STM tapError
 * @tsplus location "@effect/core/stm/STM/operations/tapError"
 */
export declare function tapError<E, R2, E2, X>(f: (e: E) => STM<R2, E2, X>): <R, A>(self: import("../definition").STM<R, E, A>) => import("../definition").STM<R2 | R, E | E2, A>;
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