import { Effect } from "@effect/core/io/Effect/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
/**
 * The moral equivalent of `if (!p) exp` when `p` has side-effects.
 * @tsplus static effect/core/io/Effect.Aspects unlessEffect
 * @tsplus pipeable effect/core/io/Effect unlessEffect
 * @tsplus location "@effect/core/io/Effect/operations/unlessEffect"
 */
export declare function unlessEffect<R2, E2>(predicate: Effect<R2, E2, boolean>): <R, E, A>(self: import("../definition").Effect<R, E, A>) => import("../definition").Effect<R2 | R, E2 | E, import("@tsplus/stdlib/data/Maybe").Maybe<A>>;
//# sourceMappingURL=unlessEffect.d.ts.map