import { Ref } from "@effect/io/Ref";
import { Semaphore, Effect } from "@effect/io/Effect";
/**
 * Ref has atomic modify support if synchronous, for Effect we need a Semaphore.
 * @tsplus fluent effect/io/Ref modifyWithEffect
 * @tsplus location "@effect-ts-app/boilerplate-prelude/_ext/Ref"
 */
export declare function modifyWithPermitWithEffect<A>(ref: Ref<A>, semaphore: Semaphore): <R, E, A2>(mod: (a: A) => import("@effect/io/Effect").Effect<R, E, readonly [A2, A]>) => import("@effect/io/Effect").Effect<R, E, A2>;
//# sourceMappingURL=Ref.d.ts.map