Importing Js library for custom code

Content

I have a mobile application. I have page in which I have menu items. For one of the menu item selection,I used "Call Module Function" in my action chain. I was able to choose the function that I have wrote in my page js section .The js is like below
 

define(["mobileApps/MyExpenseMobile/flows/main/resources/jsQR"], function(jsqr) {
  'use strict';
  
  var PageModule = function PageModule() {  
       PageModule.prototype.scanIt = function() {
        console.log("dummy");
        return "dummy";
    };  };

  return PageModule;
});

When I run it, I see the console error saying 
[VB 6:56:53 PM (ERROR), /vb/action/action/CallModuleAction]: i (callModuleFunction1_adpqjfk36) The module does not exist or the function 'scanIt' does not exist in the module.