Transform labeled for-of inside braceless if statement (#12611)

packages/babel-plugin-transform-for-of/src/index.js

@@ -227,7 +227,9 @@ export default declare((api, options) => {
           container[0] = t.labeledStatement(parent.label, container[0]);
 
           path.parentPath.replaceWithMultiple(nodes);
-          path.remove();
+
+          // The parent has been replaced, prevent Babel from traversing a detatched path
+          path.skip();
         } else {
           path.replaceWithMultiple(nodes);
         }

packages/babel-plugin-transform-for-of/test/fixtures/regression/if-block-label-generic-iterable-12610/input.js

@@ -0,0 +1,4 @@
+if (true)
+  actions: for (let x of y) {
+    continue actions
+  }

packages/babel-plugin-transform-for-of/test/fixtures/regression/if-block-label-generic-iterable-12610/output.js

@@ -0,0 +1,15 @@
+if (true) {
+  var _iterator = babelHelpers.createForOfIteratorHelper(y),
+      _step;
+
+  try {
+    actions: for (_iterator.s(); !(_step = _iterator.n()).done;) {
+      let x = _step.value;
+      continue actions;
+    }
+  } catch (err) {
+    _iterator.e(err);
+  } finally {
+    _iterator.f();
+  }
+}

packages/babel-plugin-transform-for-of/test/fixtures/regression/if-label-generic-iterable-12610/input.js

@@ -0,0 +1,4 @@
+if (true)
+  actions: for (let x of y) {
+    continue actions
+  }

packages/babel-plugin-transform-for-of/test/fixtures/regression/if-label-generic-iterable-12610/output.js

@@ -0,0 +1,15 @@
+if (true) {
+  var _iterator = babelHelpers.createForOfIteratorHelper(y),
+      _step;
+
+  try {
+    actions: for (_iterator.s(); !(_step = _iterator.n()).done;) {
+      let x = _step.value;
+      continue actions;
+    }
+  } catch (err) {
+    _iterator.e(err);
+  } finally {
+    _iterator.f();
+  }
+}