Javascript module template

main.js

$(document).ready(function() {
  // Calling module(s)
  $M.myModule();
  var module2 = new $M.myModule2();
  module2.myPublicFunction();
  if (someCondition) {
    $M.myModule3();
  }
});

myModule.js

(function() {
  var myPrivateVar1,
    myPrivateVar2;
  function myModule() {
    /*
      Module init
    */
  }
  
  function myPrivateFunction() {
    /*
      private function logic
    */
  }
  
  myModule.prototype = {
    myPublicFunction1: function(params) {
      /*
        can access private function/vars
      */
    }
  };
  
  $M = window.$M || {};
  $M.myModule = myModule;
  window.$M = $M;
})();