Call js function in app js (Sage wordpress)

ap.js

 import domReady from '@roots/sage/client/dom-ready';
+import {custom} from "@scripts/custom.js";
 
 /**
  * Application entrypoint
  */
 domReady(async () => {
   // application code
-
+  //custom();
   // global js
 
   // menu scroll functionality
@@ -40,7 +41,7 @@ domReady(async () => {
   }
 
   // mobile menu funcitonality
-  if (document.getElementById('header__menu-toggle')) {    
+  if (document.getElementById('header__menu-toggle')) {
     var menuToggle = document.querySelector('#header__menu-toggle');
     var menu = document.querySelector('#nav__menu-modal');
     var body = document.querySelector('body');