JSFiddle - React, Tailwind, and code Playground

JavaScript

var moduleClass = (function () {
    var a =5;

  return {
      setA: function (inA) {
      a=inA
    } ,
    getA: function () {
      alert(a);
    }
    
  };

})();


var instance = moduleClass;
instance.setA(8);
instance.getA();