import type { Guard } from '../guard/index.js';
type Filter = {
    <G extends Iterable<any>, Fn extends Guard.Unary>(guard: Fn): (gen: G) => Iterable<Guard.UnaryType<Fn>>;
    <G extends Iterable<any>, Fn extends Guard.Unary>(guard: Fn, gen: G): Iterable<Guard.UnaryType<Fn>>;
};
/**
 * Only `yield` each value which passes the predicate.
 *
 * @tags generator
 */
export declare const filter: Filter;
export {};