lift the declarations without mutating the node[fix babel#402]

vigneshshanmugam · Feb 2, 2017 · 76454db · 76454db
1 parent ac5eccc
commit 76454db
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/packages/babel-plugin-transform-merge-sibling-variables/src/index.js b/packages/babel-plugin-transform-merge-sibling-variables/src/index.js
@@ -24,9 +24,10 @@ module.exports = function({ types: t }) {
         return;
       }
 
-      init.node.declarations = init.node.declarations.concat(
-        firstNode.id
-      );
+      init.node.declarations = [
+        ...init.node.declarations,
+        t.variableDeclarator(firstNode.id)
+      ];
 
       body[0].replaceWith(t.assignmentExpression(
         "=",