import { forEach } from '../../array'; /** * Inserts a node or nodes before the specified reference node. * * @param nodes - A node or nodes to insert. * @param ref - A reference node. */ export function before( nodes: Node | Node[], ref: Node | null ): void { forEach( nodes, node => { const parent = ( ref || node ).parentNode; if ( parent ) { parent.insertBefore( node, ref ); } } ); }