import { Effect } from "@effect/core/io/Effect/definition";
import { Layer } from "@effect/core/io/Layer/definition";
/**
 * Performs the specified effect if this layer fails.
 * @tsplus static effect/core/io/Layer.Aspects tapError
 * @tsplus pipeable effect/core/io/Layer tapError
 * @tsplus location "@effect/core/io/Layer/operations/tapError"
 */
export declare function tapError<E, RIn2, E2, X>(f: (e: E) => Effect<RIn2, E2, X>): <RIn, ROut>(self: import("../definition").Layer<RIn, E, ROut>) => import("../definition").Layer<RIn2 | RIn, E | E2, ROut>;
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