v2.13.7

This reverts commit 9cf1c62147.

CHANGELOG.md

@@ -11,6 +11,16 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 2.13.7
+
+ * **Bug Fix**
+  * Don't realias variables that are already declared in optional `coreAliasing` transformer.
+
+## 2.13.6
+
+ * **Bug Fix**
+  * Add `NewExpression` as a valid parent for parentheses insertion for `ConditionalExpression`.
+
 ## 2.13.5
 
  * **Bug Fix**

lib/6to5/transformation/transformers/optional-core-aliasing.js

@@ -42,7 +42,7 @@ exports.ast = {
             context.skip();
             return t.prependToMemberExpression(node, file._coreId);
           }
-        } else if (t.isReferencedIdentifier(node, parent) && !t.isMemberExpression(parent) && _.contains(ALIASABLE_CONSTRUCTORS, node.name)) {
+        } else if (t.isReferencedIdentifier(node, parent) && !t.isMemberExpression(parent) && _.contains(ALIASABLE_CONSTRUCTORS, node.name) && !scope.get(node.name, true)) {
           // Symbol() -> _core.Symbol(); new Promise -> new _core.Promise
           return t.memberExpression(file._coreId, node);
         } else if (t.isCallExpression(node)) {

package.json

@@ -1,7 +1,7 @@
 {
   "name": "6to5",
   "description": "Turn ES6 code into readable vanilla ES5 with source maps",
-  "version": "2.13.6",
+  "version": "2.13.7",
   "author": "Sebastian McKenzie <sebmck@gmail.com>",
   "homepage": "https://6to5.org/",
   "repository": "6to5/6to5",