From 9a9339fbcb01b47ab28c2ebcc7dba31a3691ad77 Mon Sep 17 00:00:00 2001
From: Todd Volkert <tvolkert@users.noreply.github.com>
Date: Thu, 17 Dec 2020 14:47:45 -0800
Subject: [PATCH] Fix bug in docs.dart (#72544)

Add a check that a pubspec file exists before trying to read it.
---
 dev/tools/dartdoc.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dev/tools/dartdoc.dart b/dev/tools/dartdoc.dart
index 510639366a..39a288ec8b 100644
--- a/dev/tools/dartdoc.dart
+++ b/dev/tools/dartdoc.dart
@@ -468,6 +468,10 @@ List<Directory> findPackages() {
       if (entity is! Directory)
         return false;
       final File pubspec = File('${entity.path}/pubspec.yaml');
+      if (!pubspec.existsSync()) {
+        print("Unexpected package '${entity.path}' found in packages directory");
+        return false;
+      }
       // TODO(ianh): Use a real YAML parser here
       return !pubspec.readAsStringSync().contains('nodoc: true');
     })