gistfile1.coffee

x: (test...) ->
  alert(test)

gistfile2.js

var x;
var __slice = Array.prototype.slice;
x= function() {
  var test;
  var _a = arguments.length, _b = _a >= 1;
  test = __slice.call(arguments, 0, _a - 0);
  return alert(test);
};

gistfile3.js

var x;
var __slice = Array.prototype.slice;
x = function() {
  var test = __slice.call(arguments);
  return alert(test);
};