setTimeout setInterval fixer.js

// (C) new BSD license
// fix FF bug (delay pass to function) and add support of arguments 

(function($G)
{
  var fnCache = {};
  var _fixNoArgs = function(_origFn, _arraySlice)
  {
    return function(/*_fn, delay*/) // .length === 0
    {
      if(arguments.length <= 2)
      {
        return _origFn(arguments[0], arguments[1] || 0);
      }
      else
      {
        var _fn = arguments[0];
        
        if(_fn === '') // chrome behavior
          return;
        
        if(typeof(_fn) != 'function')
        {  
          _fn += ''; // to string
          _fn = fnCache[_fn] || (fnCache[_fn] = new Function(_fn));
        }
        
        var args = _arraySlice.call(arguments, 2);
        
        return _origFn(
          function()
          {
            _fn.apply($G, args)
          },
          arguments[1] || 0
        );
      }
    };
  };  

  var _fixFFBug = function(_origFn, _arraySlice)
  {
    return function(/*_fn, delay*/) // .length === 0
    {
      if(arguments.length <= 2)
      {
        var _fn = arguments[0];
        
        if(_fn === '') // chrome behavior
          return;
        
        if(typeof(_fn) != 'function')
        {  
          _fn += ''; // to string
          _fn = fnCache[_fn] || (fnCache[_fn] = new Function(_fn));
        }

        return _origFn(
          function()
          { 
            _fn.call($G); 
          }, 
          arguments[1] || 0
        );
      }
      else
      {
        return _origFn.apply($G, arguments);
      }
    };
  };  

  var _fixNoArgsAndFFBug = function(_origFn, _arraySlice)
  {
    return function(/*_fn, delay*/) // .length === 0
    {
      var _fn = arguments[0];
      
      if(_fn === '') // chrome behavior
        return;
      
      if(typeof(_fn) != 'function')
      {  
        _fn += ''; // to string
        _fn = fnCache[_fn] || (fnCache[_fn] = new Function(_fn));
      }

      if(arguments.length <= 2)
      {
        return _origFn(
          function()
          { 
            _fn.call($G); 
          }, 
          arguments[1] || 0
        );
      }
      else
      {
        var args = _arraySlice.call(arguments, 2);
        
        return _origFn(
          function()
          {
            _fn.apply($G, args)
          },
          arguments[1] || 0
        );
      }
    };
  };  

  var _testAndFix = function(setFnName, clearFnName)
  {
    var id = $G[setFnName](
      function(a, b, c)
      {
        $G[clearFnName](id);
        
        var noArgs = a !== 1 || b !== '2' || c !== true;
        
        var id = $G[setFnName](
          function(a)
          {
            $G[clearFnName](id);
            
            var ffBug = arguments.length > 0;
            var _fixer;
            
            if(ffBug && noArgs)
              _fixer = _fixNoArgsAndFFBug;
            else if(ffBug)  
              _fixer = _fixFFBug;
            else if(noArgs)  
              _fixer = _fixNoArgs;
            
            if(_fixer)
              $G[setFnName] = _fixer($G[setFnName], [].slice);
          },
          0
        );  
      },
      0,
      1, '2', true
    );
  };

  _testAndFix('setTimeout', 'clearTimeout');
  _testAndFix('setInterval', 'clearInterval');
})(this);

(function($G)
{
  // test
  $G.setTimeout(
    function()
    {
      $G.setTimeout(
        function(a, b, c)
        {
          console.log('args test', a === 1 && b === '2' && c === true);
        },
        0,
        1, '2', true
      );

      $G.setTimeout(
        function()
        {
          console.log('ff bug test', arguments.length == 0);
        },
        0
      );
    },
    1000
  );
})(this);