import { slice } from '../../arrayLike';
import { matches } from '../matches/matches';


/**
 * Finds children that has the specified tag or class name.
 *
 * @param parent   - A parent element.
 * @param selector - Optional. A selector to filter children.
 *
 * @return An array with filtered children.
 */
export function children<E extends HTMLElement>( parent: HTMLElement, selector?: string ): E[] {
  const children = parent ? slice( parent.children ) as E[] : [];
  return selector ? children.filter( child => matches( child, selector ) ) : children;
}