import { Maybe } from "@tsplus/stdlib/data/Maybe/definition";
import { HashMap } from "@tsplus/stdlib/collections/HashMap/definition";
/**
 * Maps over the values of the `HashMap` using the specified partial function
 * and filters out `None` values.
 * @tsplus static HashMap.Aspects collect
 * @tsplus pipeable HashMap collect
 * @tsplus location "@tsplus/stdlib/collections/HashMap/operations/collect"
 */
export declare function collect<A, B>(f: (a: A) => Maybe<B>): <K>(self: import("../definition").HashMap<K, A>) => import("../definition").HashMap<K, B>;
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