import { Effect } from "@effect/core/io/Effect/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
/**
 * Requires the option produced by this value to be `None`.
 * @tsplus getter effect/core/io/Effect none
 * @tsplus location "@effect/core/io/Effect/operations/none"
 */
export declare function none<R, E, A>(self: Effect<R, E, Maybe<A>>): Effect<R, Maybe<E>, void>;
//# sourceMappingURL=none.d.ts.map