import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Gen } from "@effect/core/testing/Gen/definition";
/**
 * Maps the values produced by this generator with the specified partial
 * function, discarding any values the partial function is not defined at.
 * @tsplus static effect/core/testing/Gen.Aspects collect
 * @tsplus pipeable effect/core/testing/Gen collect
 * @tsplus location "@effect/core/testing/Gen/operations/collect"
 */
export declare function collect<A, B>(pf: (a: A) => Maybe<B>): <R>(self: import("../definition").Gen<R, A>) => import("../definition").Gen<R, B>;
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