import { Effect } from "@effect/core/io/Effect/definition";
import { Either } from "@tsplus/stdlib/data/Either/definition";
/**
 * Maps the error value of this effect to a left value.
 * @tsplus getter effect/core/io/Effect asLeftError
 * @tsplus location "@effect/core/io/Effect/operations/asLeftError"
 */
export declare function asLeftError<R, E, A>(self: Effect<R, E, A>): Effect<R, Either<E, never>, A>;
//# sourceMappingURL=asLeftError.d.ts.map