import { HashMap } from "@tsplus/stdlib/collections/HashMap/definition";
/**
 * Performs a union of this `HashMap` and that `HashMap`.
 * @tsplus pipeable-operator HashMap +
 * @tsplus static HashMap.Aspects union
 * @tsplus pipeable HashMap union
 * @tsplus location "@tsplus/stdlib/collections/HashMap/operations/union"
 */
export declare function union<K1, V1>(that: HashMap<K1, V1>): <K0, V0>(self: import("../definition").HashMap<K0, V0>) => import("../definition").HashMap<K1 | K0, V1 | V0>;
//# sourceMappingURL=union.d.ts.map