Gets the function argument names in an Array

functionRegExp.js

function injector (objects) {
  
  function functionArgsName(fn) { 
     var fragment;
     fn = fn.toString();
     //remove comments 
     fn = fn.replace(/(\/\*([\s\S]*?)\*\/)|(\/\/(.*)$)/gm,"");
     fragment = fn.match(/function\s*\w*\s*\((.*?)\)/)[1];
     if (!/^[\s]*$/g.test(fragment)) {
       return fragment.replace(/(\s)/g,"").split(",");
     } else return [];
 }
 
 return {
  inject : function (fn) {
   var args, i = 0, toInject;
   args = functionArgsName(fn);
   i = args.length;
   while(i--) {
    if (objects[args[i]]) {
     toInject.push(objects[args[i]]);
    }
   }
   fn.apply(fn, toInject);
  }
 }  
}

function functionArgsName(fn) { 
     var fragment;
     fn = fn.toString();
     //remove comments 
     fn = fn.replace(/(\/\*([\s\S]*?)\*\/)|(\/\/(.*)$)/gm,"");
     fragment = fn.match(/function\s*\w*\s*\((.*?)\)/)[1];
     if (!/^[\s]*$/g.test(fragment)) {
       return fragment.replace(/(\s)/g,"").split(",");
     } else return [];
 }
// Tests 
 console.log(functionArgsName(function(){}));
 console.log(functionArgsName(function(    ){}));
 console.log(functionArgsName(function( param1 ){}));
 console.log(functionArgsName(function( param1 , $param2 ){}));
 console.log(functionArgsName(function(param1, $param2){}));
 console.log(functionArgsName(function(       $param1){}));
 console.log(functionArgsName(function(param1,$param2){}));
 console.log(functionArgsName(function(param1,/*comment here*/ $param2asdads){}));
 console.log(functionArgsName(function(/**/param1,/*(function(name,name))*/ $param2asdads){}));
 console.log(functionArgsName(function /* you can do this */ (param1, $param2asdads){}));
/* OUTPUT 
[]
[]
["param1"]
["param1", "$param2"]
["param1", "$param2"]
["$param1"]
["param1", "$param2"]
["param1", "$param2asdads"]
["param1", "$param2asdads"]
["param1", "$param2asdads"]
*/