add file alias declarations so we can alias certain long function calls - resolves #62

test/fixtures/syntax/rest-parameters/multiple/expected.js

@@ -1,7 +1,9 @@
+var _slice = Array.prototype.slice;
+
 var t = function (f) {
-  var items = Array.prototype.slice.call(arguments, 1);
+  var items = _slice.call(arguments, 1);
 };
 
 function t(f) {
-  var items = Array.prototype.slice.call(arguments, 1);
+  var items = _slice.call(arguments, 1);
 }