Works with function arguments in JS

arguments

/*Only use:
  arguments.length
  arguments[i] where i is always a valid integer index into the arguments, and can not be out of bound
  Never use arguments directly without .length or [i]
  STRICTLY fn.apply(y, arguments) is ok, nothing else is, e.g. .slice. Function#apply is special.
  
Workaround for proxying is to create array in-line:*/

function doesntLeakArguments() {
//.length is just an integer, this doesn't leak
//the arguments object itself
  var args = new Array(arguments.length);
  for(var i = 0; i < args.length; ++i) {
    //i is always valid index in the arguments object
    args[i] = arguments[i];
  }  
  return args;
}

function anotherNotLeakingExample() {
  var i = arguments.length;
  var args = [];
  while (i--) args[i] = arguments[i];
    return args
}

var args = (arguments.length === 1 ? [arguments[0]] : Array.apply(null, arguments));