From 6adf3a4f61e83b34ea1656f524d177c068dce777 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mart=C3=ADn=20Bigio?= <martinb@fb.com>
Date: Thu, 21 Jan 2016 08:15:19 -0800
Subject: [PATCH] Improve error message

Summary:
There's a long standing issue on open source (https://github.com/facebook/react-native/issues/4968). Until someone gets some free bandwidth to fix it lets at the very least improve the error message to guide users to the issue and suggest workarounds.

public

Reviewed By: mkonicek

Differential Revision: D2849051

fb-gh-sync-id: ef7913442ceabcab2076141bd13ab1ceeb529759
---
 .../DependencyGraph/ResolutionRequest.js                  | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js b/react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js
index 50a59025..65742f1a 100644
--- a/react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js
+++ b/react-packager/src/DependencyResolver/DependencyGraph/ResolutionRequest.js
@@ -372,7 +372,13 @@ class ResolutionRequest {
         throw new UnableToResolveError(
           fromModule,
           toModule,
-          `Invalid directory ${potentialDirPath}`,
+`Invalid directory ${potentialDirPath}
+
+This might related to https://github.com/facebook/react-native/issues/4968
+To resolve try the following:
+  1. Clear watchman watches: \`watchman watch-del-all\`.
+  2. Delete the \`node_modules\` folder: \`rm -rf node_modules && npm install\`.
+  3. Reset packager cache: \`rm -fr $TMPDIR/react-*\` or \`npm start -- --reset-cache\`.`,
         );
       }