import { Refinement } from "@tsplus/stdlib/data/Function";
import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { Predicate } from "@tsplus/stdlib/data/Predicate";
/**
 * @tsplus static Maybe.Aspects filter
 * @tsplus pipeable Maybe filter
 * @tsplus location "@tsplus/stdlib/data/Maybe/filter"
 */
export declare function filter<A, B extends A>(f: Refinement<A, B>): (self: Maybe<A>) => Maybe<B>;
export declare function filter<A>(f: Predicate<A>): (self: Maybe<A>) => Maybe<A>;
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