From ef60eee57ab8a86e47847761532cf72a1205b668 Mon Sep 17 00:00:00 2001
From: Keito Uchiyama <keito@fb.com>
Date: Wed, 9 Oct 2013 11:11:41 -0700
Subject: [PATCH] Make transferPropsTo() message easier to debug

Summary:
Made the transferPropsTo() error introduced in
325322898cc413454feede0201b61da1abe1e67e easier to use to debug.
---
 src/core/ReactPropTransferer.js                | 8 +++++---
 src/core/__tests__/ReactPropTransferer-test.js | 3 ++-
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/core/ReactPropTransferer.js b/src/core/ReactPropTransferer.js
index db8e675d5b..4430652689 100644
--- a/src/core/ReactPropTransferer.js
+++ b/src/core/ReactPropTransferer.js
@@ -93,9 +93,11 @@ var ReactPropTransferer = {
     transferPropsTo: function(component) {
       invariant(
         component.props.__owner__ === this,
-        'You can\'t call transferPropsTo() on a component that you don\'t ' +
-        'own. This usually means you are calling transferPropsTo() on a ' +
-        'component passed in as props or children.'
+        '%s: You can\'t call transferPropsTo() on a component that you ' +
+        'don\'t own, %s. This usually means you are calling ' +
+        'transferPropsTo() on a component passed in as props or children.',
+        this.constructor.displayName,
+        component.constructor.displayName
       );
 
       var props = {};
diff --git a/src/core/__tests__/ReactPropTransferer-test.js b/src/core/__tests__/ReactPropTransferer-test.js
index 8b75130005..1854ef7e95 100644
--- a/src/core/__tests__/ReactPropTransferer-test.js
+++ b/src/core/__tests__/ReactPropTransferer-test.js
@@ -148,7 +148,8 @@ describe('ReactPropTransferer', function() {
       ReactTestUtils.renderIntoDocument(<Parent />);
     }).toThrow(
       'Invariant Violation: ' +
-      'You can\'t call transferPropsTo() on a component that you don\'t own. ' +
+      'Child: You can\'t call transferPropsTo() on a component that you ' +
+      'don\'t own, span. ' +
       'This usually means you are calling transferPropsTo() on a component ' +
       'passed in as props or children.'
     );