Properly handle classes inside constructor calls

Author: rattrayalex

src/index.js

@@ -367,6 +367,9 @@ export default function (babel) {
   function containsSuperCall(path) {
     let hasSuper = false;
     path.traverse({
+      Class(classPath) {
+        classPath.skip();
+      },
       Super(superPath) {
         if (superPath.parentPath.isCallExpression()) {
           hasSuper = true;
@@ -428,6 +431,9 @@ export default function (babel) {
     // directly after each instance of super(), insert the thingies there.
     if (node.superClass) {
       constructorPath.traverse({
+        Class(classPath) {
+          classPath.skip();
+        },
         Super(superPath) {
           if (!superPath.parentPath.isCallExpression()) return;
           let superStatementPath = superPath.getStatementParent();

test/fixtures/arrow-methods-class/fat-nested-class-super/actual.js

@@ -0,0 +1,8 @@
+class A extends B {
+  constructor() ->
+    class C extends B:
+      constructor() ->
+        super()
+
+  f() => this
+}

test/fixtures/arrow-methods-class/fat-nested-class-super/expected.js

@@ -0,0 +1,14 @@
+class A extends B {
+  constructor(..._args) {
+    super(..._args);
+    this.f = this.f.bind(this);
+
+    class C extends B {
+      constructor() {
+        super();
+      }
+    }
+  }f() {
+    return this;
+  }
+}