From 21f76655ad1c7ba76461460354864265ec85df87 Mon Sep 17 00:00:00 2001
From: Henry Zhu <hi@henryzoo.com>
Date: Sat, 5 Dec 2015 13:37:06 -0500
Subject: [PATCH] account for parent NewExpression with arguments

---
 packages/babel-generator/src/generators/expressions.js       | 4 +++-
 .../test/fixtures/compact/new-expression/actual.js           | 5 +++++
 .../test/fixtures/compact/new-expression/expected.js         | 2 +-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/packages/babel-generator/src/generators/expressions.js b/packages/babel-generator/src/generators/expressions.js
index c644a0fde4..ab60f795d8 100644
--- a/packages/babel-generator/src/generators/expressions.js
+++ b/packages/babel-generator/src/generators/expressions.js
@@ -63,7 +63,9 @@ export function NewExpression(node: Object, parent: Object) {
   this.push("new ");
   this.print(node.callee, node);
   if (node.arguments.length === 0 && this.format.compact &&
-      !t.isCallExpression(parent, { callee: node }) && !t.isMemberExpression(parent)) return;
+      !t.isCallExpression(parent, { callee: node }) &&
+      !t.isMemberExpression(parent) &&
+      !(t.isNewExpression(parent) && parent.arguments.length > 0)) return;
 
   this.push("(");
   this.printList(node.arguments, node);
diff --git a/packages/babel-generator/test/fixtures/compact/new-expression/actual.js b/packages/babel-generator/test/fixtures/compact/new-expression/actual.js
index ae661bc5d3..fc24dfad4c 100644
--- a/packages/babel-generator/test/fixtures/compact/new-expression/actual.js
+++ b/packages/babel-generator/test/fixtures/compact/new-expression/actual.js
@@ -1,3 +1,8 @@
 new X();
 new Y()();
 new F().z;
+
+new new x()();
+new new x()(a);
+new new x(a)();
+new new x(a)(a);
diff --git a/packages/babel-generator/test/fixtures/compact/new-expression/expected.js b/packages/babel-generator/test/fixtures/compact/new-expression/expected.js
index 4491231de6..acbf200d89 100644
--- a/packages/babel-generator/test/fixtures/compact/new-expression/expected.js
+++ b/packages/babel-generator/test/fixtures/compact/new-expression/expected.js
@@ -1 +1 @@
-new X;new Y()();new F().z;
+new X;new Y()();new F().z;new new x;new new x()(a);new new x(a);new new x(a)(a);