import { Effect } from "@effect/core/io/Effect/definition";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Stream } from "@effect/core/stream/Stream/definition";
/**
 * Returns the resulting stream when the given partial function is defined
 * for the given effectful value, otherwise returns an empty stream.
 * @tsplus static effect/core/stream/Stream.Ops whenCaseEffect
 * @tsplus location "@effect/core/stream/Stream/operations/whenCaseEffect"
 */
export declare function whenCaseEffect<R, E, A, R1, E1, A1>(a: Effect<R, E, A>, pf: (a: A) => Maybe<Stream<R1, E1, A1>>): Stream<R | R1, E | E1, A1>;
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