JS Module pattern - quick example

module.js

/* Module pattern in javascript
 * Not using RequireJS/ES6/Node/...
*/

var MyModule = (function () {
  function SubClass() {
    // constructor
  }
  
  SubClass.prototype.someMethod = function() {
    // method
  };
  
  var blah = function() {
    console.log('blah');
  };
  
  // export submodules/classes
  return {
    SubClass: SubClass,
    blah: blah
  };
})();