From 88ffb77729daf47a2714af4f6f5463dc7213acda Mon Sep 17 00:00:00 2001
From: Abhinav Batra <abhinavbatra@fb.com>
Date: Fri, 18 May 2018 05:08:33 -0700
Subject: [PATCH] Fix symbolication for frames without filename

Summary: Metro server would fail when frame.file would be null. This can happen when the frame is not in js.

Reviewed By: davidaurelio

Differential Revision: D8055637

fbshipit-source-id: eed5abe0cacef68b72a1cd47db23426b5c594727
---
 packages/metro/src/Server.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/metro/src/Server.js b/packages/metro/src/Server.js
index cd404af4..49768c39 100644
--- a/packages/metro/src/Server.js
+++ b/packages/metro/src/Server.js
@@ -945,6 +945,7 @@ class Server {
           // does not need to symbolication.
           // Skip anything except http(s), because there is no support for that yet
           if (
+            sourceUrl != null &&
             !urls.has(sourceUrl) &&
             !sourceUrl.endsWith('/debuggerWorker.js') &&
             sourceUrl.startsWith('http')