Destructuring: Create assignments from ForX non-declaration patterns (#9414)

2019-01-28 08:50:24 +00:00
parent ede69eef7f
commit 1452e977a0
9 changed files with 62 additions and 11 deletions
--- a/packages/babel-plugin-transform-destructuring/src/index.js
+++ b/packages/babel-plugin-transform-destructuring/src/index.js
@@ -449,8 +449,14 @@ export default declare((api, options) => {

          path.ensureBlock();

+          if (node.body.body.length === 0 && path.isCompletionRecord()) {
+            node.body.body.unshift(
+              t.expressionStatement(scope.buildUndefinedNode()),
+            );
+          }
+
          node.body.body.unshift(
-            t.variableDeclaration("var", [t.variableDeclarator(left, temp)]),
+            t.expressionStatement(t.assignmentExpression("=", left, temp)),
          );

          return;