From be38ae1169053adf21b907dcffa53ae4ca73744f Mon Sep 17 00:00:00 2001
From: Anoop Chaurasiya <anoopc@fb.com>
Date: Mon, 23 May 2016 11:03:17 -0700
Subject: [PATCH] provide verbose error-message on bundle-load-failure

Reviewed By: fkgozali

Differential Revision: D3329107

fbshipit-source-id: 33c02ff066ec9ad415a5cc4639347ebdef67c604
---
 React/Base/RCTJavaScriptLoader.m | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/React/Base/RCTJavaScriptLoader.m b/React/Base/RCTJavaScriptLoader.m
index 71169816dd4..f677db64e23 100755
--- a/React/Base/RCTJavaScriptLoader.m
+++ b/React/Base/RCTJavaScriptLoader.m
@@ -25,12 +25,15 @@ RCT_NOT_IMPLEMENTED(- (instancetype)init)
 
 + (void)loadBundleAtURL:(NSURL *)scriptURL onComplete:(RCTSourceLoadBlock)onComplete
 {
+  NSString *unsanitizedScriptURLString = scriptURL.absoluteString;
   // Sanitize the script URL
-  scriptURL = [RCTConvert NSURL:scriptURL.absoluteString];
+  scriptURL = [RCTConvert NSURL:unsanitizedScriptURLString];
 
   if (!scriptURL) {
+    NSString *errorDescription = [NSString stringWithFormat:@"No script URL provided."
+                                  @"unsanitizedScriptURLString:(%@)", unsanitizedScriptURLString];
     NSError *error = [NSError errorWithDomain:@"JavaScriptLoader" code:1 userInfo:@{
-      NSLocalizedDescriptionKey: @"No script URL provided."
+      NSLocalizedDescriptionKey: errorDescription
     }];
     onComplete(error, nil);
     return;