import { Collection } from "@tsplus/stdlib/collections/Collection/definition";
import { SortedSet } from "@tsplus/stdlib/collections/SortedSet/definition";
/**
 * Computes the set union of the set and the specified collection
 *
 * **Note**: the hash and equal of the 2 sets must be the same.
 * @tsplus static SortedSet.Aspects union
 * @tsplus pipeable SortedSet union
 * @tsplus location "@tsplus/stdlib/collections/SortedSet/union"
 */
export declare function union<A>(that: Collection<A>): (self: SortedSet<A>) => SortedSet<A>;
//# sourceMappingURL=union.d.ts.map