use scope for uid registry instead of a global registry

test/fixtures/transformation/es6-arrow-functions/arguments/expected.js

@@ -10,15 +10,15 @@ function one() {
 one(1, 2);
 
 function two() {
-  var _arguments2 = arguments;
+  var _arguments = arguments;
   var inner = function () {
-    return _arguments2;
+    return _arguments;
   };
 
   var another = function () {
-    var _arguments3 = arguments;
+    var _arguments2 = arguments;
     var inner2 = function () {
-      return _arguments3;
+      return _arguments2;
     };
   };
 
@@ -27,18 +27,18 @@ function two() {
 two(1, 2);
 
 function three() {
-  var _arguments4 = arguments;
+  var _arguments = arguments;
   var fn = function () {
-    return _arguments4[0] + "bar";
+    return _arguments[0] + "bar";
   };
   return fn();
 }
 three("foo");
 
 function four() {
-  var _arguments5 = arguments;
+  var _arguments = arguments;
   var fn = function () {
-    return _arguments5[0].foo + "bar";
+    return _arguments[0].foo + "bar";
   };
   return fn();
 }

test/fixtures/transformation/es6-destructuring/parameters/expected.js

@@ -23,25 +23,25 @@ function somethingAdvanced(_ref) {
   var y2 = _ref.bottomRight.y;
 }
 
-function unpackObject(_ref2) {
-  var title = _ref2.title;
-  var author = _ref2.author;
+function unpackObject(_ref) {
+  var title = _ref.title;
+  var author = _ref.author;
   return title + " " + author;
 }
 
 console.log(unpackObject({ title: "title", author: "author" }));
 
-var unpackArray = function (_ref3, _ref4) {
+var unpackArray = function (_ref, _ref3) {
+  var _ref2 = _slicedToArray(_ref, 3);
+
+  var a = _ref2[0];
+  var b = _ref2[1];
+  var c = _ref2[2];
   var _ref32 = _slicedToArray(_ref3, 3);
 
-  var a = _ref32[0];
-  var b = _ref32[1];
-  var c = _ref32[2];
-  var _ref42 = _slicedToArray(_ref4, 3);
-
-  var x = _ref42[0];
-  var y = _ref42[1];
-  var z = _ref42[2];
+  var x = _ref32[0];
+  var y = _ref32[1];
+  var z = _ref32[2];
   return a + b + c;
 };
 

test/fixtures/transformation/es6-parameters.rest/multiple/expected.js

@@ -7,7 +7,7 @@ var t = function (f) {
 };
 
 function t(f) {
-  for (var _len2 = arguments.length, items = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
-    items[_key2 - 1] = arguments[_key2];
+  for (var _len = arguments.length, items = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+    items[_key - 1] = arguments[_key];
   }
 }

test/fixtures/transformation/es6-parameters.rest/single/expected.js

@@ -7,7 +7,7 @@ var t = function () {
 };
 
 function t() {
-  for (var _len2 = arguments.length, items = Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
-    items[_key2] = arguments[_key2];
+  for (var _len = arguments.length, items = Array(_len), _key = 0; _key < _len; _key++) {
+    items[_key] = arguments[_key];
   }
 }