Module design pattern in JS

modulePattern.js

var basketballModule = (function(){
  var points = 0;
  
  return {
    twoPointsMade: function(){
      return points = points + 2;
    },
    
    threePointsMade: function(){
      return points = points + 3;
    }
  }
})();

basketballModule.twoPointsMade(); // 2
basketballModule.threePointsMade(); // 5
basketballModule.threePointsMade(); // 8