/**
 * Concatenates the source iterable with any number of additional iterables in the order provided.
 *
 * @typeParam T - Element type yielded by each iterable.
 * @param src - Source iterable to enumerate first.
 * @param sequences - Additional iterables appended sequentially after the source.
 * @returns A deferred iterable that yields all items from `src` followed by each iterable in `sequences`.
 *
 * @example
 * ```ts
 * const combined = _concat([1, 2], [3], [4, 5]);
 * console.log([...combined]); // [1, 2, 3, 4, 5]
 * ```
 *
 * or using the curried version:
 * ```ts
 * const combined = pipeInto([1, 2], concat([3], [4, 5]));
 * console.log([...combined]); // [1, 2, 3, 4, 5]
 * ```
 */
export declare function _concat<T>(src: Iterable<T>, ...sequences: Iterable<T>[]): Iterable<T>;
/**
 * Curried version of {@link _concat}.
 */
export declare const concat: <T>(...args: Iterable<T>[]) => (src: Iterable<T>) => Iterable<T>;