Utilitarios.js Modular AMD, Node.js, Browser

utilitarios.js

(function( global, factory ) {
  if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {
    module.exports = factory(global);
  } else if (typeof define === 'function' && define.amd) {
    define([], function() {
      return factory(global);
    });
  } else {
    global.Utilitarios = factory(global);
  }
}(typeof window !== 'undefined' ? window : this, function( window ) {
  var Core = function(options) {
  };
 
  Core.prototype.isNull = function(obj) {
    return obj === null;
  };
 
  Core.prototype.isUndefined = function(obj) {
    return obj === void 0;
  };
 
  return Core;
}));