From 48be433ce2d00aeee4a47dd1f0771118a869bd7d Mon Sep 17 00:00:00 2001
From: Chris Bracken <chris@bracken.jp>
Date: Thu, 20 Dec 2018 12:25:11 -0800
Subject: [PATCH] [License] Enable prefer_is_empty lint

---
 tools/licenses/analysis_options.yaml | 1 +
 tools/licenses/lib/filesystem.dart   | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/licenses/analysis_options.yaml b/tools/licenses/analysis_options.yaml
index e3f9becba..20c0737b2 100644
--- a/tools/licenses/analysis_options.yaml
+++ b/tools/licenses/analysis_options.yaml
@@ -55,6 +55,7 @@ linter:
     - prefer_final_fields
     - prefer_final_locals
     - prefer_initializing_formals
+    - prefer_is_empty
     - prefer_is_not_empty
     - prefer_single_quotes
     - prefer_void_to_null
diff --git a/tools/licenses/lib/filesystem.dart b/tools/licenses/lib/filesystem.dart
index f2640b4a1..07dfd0a45 100644
--- a/tools/licenses/lib/filesystem.dart
+++ b/tools/licenses/lib/filesystem.dart
@@ -230,7 +230,7 @@ FileType identifyFile(String name, Reader reader) {
       return FileType.binary;
   }
   bytes ??= reader();
-  assert(bytes.length > 0);
+  assert(bytes.isNotEmpty);
   if (matchesSignature(bytes, <int>[0x1F, 0x8B]))
     return FileType.gz; // GZip archive
   if (matchesSignature(bytes, <int>[0x42, 0x5A]))
-- 
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