import { STM } from "@effect/core/stm/STM/definition/base";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
/**
 * Unwraps the optional error, defaulting to the provided value.
 * @tsplus static effect/core/stm/STM.Aspects flattenErrorMaybe
 * @tsplus pipeable effect/core/stm/STM flattenErrorMaybe
 * @tsplus location "@effect/core/stm/STM/operations/flattenErrorMaybe"
 */
export declare function flattenErrorMaybe<E2>(def: E2): <R, E, A>(self: import("../definition").STM<R, import("@tsplus/stdlib/data/Maybe").Maybe<E>, A>) => import("../definition").STM<R, E2 | E, A>;
//# sourceMappingURL=flattenErrorMaybe.d.ts.map