//#region src/Array/union.d.ts
/**
 * # union
 *
 * ```ts
 * function Array.union<T>(
 *     target: readonly T[],
 *     source: Iterable<NoInfer<T>>,
 * ): readonly T[]
 * ```
 *
 * Returns a new array containing all unique elements from both `target` and `source`. Elements from `source` that are not already in `target` are added to the result.
 *
 * ## Example
 *
 * ```ts [data-first]
 * import { Array } from "@monstermann/array";
 *
 * Array.union([1, 2, 3], [3, 4, 5]); // [1, 2, 3, 4, 5]
 * ```
 *
 * ```ts [data-last]
 * import { Array } from "@monstermann/array";
 *
 * pipe([1, 2, 3], Array.union([3, 4, 5])); // [1, 2, 3, 4, 5]
 * ```
 *
 */
declare const union: {
  <T>(source: Iterable<NoInfer<T>>): (target: T[]) => T[];
  <T>(source: Iterable<NoInfer<T>>): (target: readonly T[]) => readonly T[];
  <T>(target: T[], source: Iterable<NoInfer<T>>): T[];
  <T>(target: readonly T[], source: Iterable<NoInfer<T>>): readonly T[];
};
//#endregion
export { union };