// With combined_menu feature flag, there's a benefit to splitting up the import const importModule = () => import(/* webpackChunkName: 'top_nav' */ './mount'); const tryMountTopNav = async () => { const el = document.getElementById('js-top-nav'); if (!el) { return; } const { mountTopNav } = await importModule(); mountTopNav(el); }; const tryMountTopNavResponsive = async () => { const el = document.getElementById('js-top-nav-responsive'); if (!el) { return; } const { mountTopNavResponsive } = await importModule(); mountTopNavResponsive(el); }; export const initTopNav = async () => Promise.all([tryMountTopNav(), tryMountTopNavResponsive()]);