Options/Software/Singleton/singleton.js

gistfile1.js

/**
 * @author Nahid Akbar
 * @date 19/10/14
 */
"use strict";
var singleton = function(BaseClass, instanceParent, instanceVarName)
{
   instanceParent = instanceParent !== undefined ? instanceParent : BaseClass;
   instanceVarName = instanceVarName !== undefined ? instanceVarName : 'instance';
   return function()
   {
      if (instanceParent[instanceVarName] === undefined)
      {
         var WithArguments = Function.prototype.bind.apply(BaseClass, Array.prototype.concat.apply([ null ], arguments));
         instanceParent[instanceVarName] = new WithArguments();
      }
      return instanceParent[instanceVarName];
   };
};
module.exports = singleton;