fix forOf loop inheritance - fixes #1169

src/babel/transformation/transformers/es6/for-of.js

@@ -17,9 +17,6 @@ export function ForOfStatement(node, parent, scope, file) {
   var loop   = build.loop;
   var block  = loop.body;
 
-  // inherit comments from the original loop
-  t.inheritsComments(loop, node);
-
   // ensure that it's a block so we can take all its statements
   t.ensureBlock(node);
 
@@ -32,6 +29,7 @@ export function ForOfStatement(node, parent, scope, file) {
   block.body = block.body.concat(node.body.body);
 
   t.inherits(loop, node);
+  t.inherits(loop.body, node.body);
 
   if (build.replaceParent) {
     this.parentPath.replaceWithMultiple(build.node);

test/core/fixtures/transformation/misc/regression-1169/actual.js

@@ -0,0 +1,11 @@
+function foo() {
+  let input = ['a', 'b', 'c']
+  let output = {}
+
+  for (let c of input) {
+    let name = c
+    output[name] = name
+  }
+
+  return output
+}

test/core/fixtures/transformation/misc/regression-1169/expected.js

@@ -0,0 +1,33 @@
+'use strict';
+
+function foo() {
+  var input = ['a', 'b', 'c'];
+  var output = {};
+
+  var _iteratorNormalCompletion = true;
+  var _didIteratorError = false;
+  var _iteratorError = undefined;
+
+  try {
+    for (var _iterator = input[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+      var c = _step.value;
+
+      var _name = c;
+      output[_name] = _name;
+    }
+  } catch (err) {
+    _didIteratorError = true;
+    _iteratorError = err;
+  } finally {
+    try {
+      if (!_iteratorNormalCompletion && _iterator['return']) {
+        _iterator['return']();
+      }
+    } finally {
+      if (_didIteratorError) {
+        throw _iteratorError;
+      }
+    }
+  }
+
+  return output;