From b36ea7ac9d07e4af166a052ec97fdcadbcea4b3d Mon Sep 17 00:00:00 2001
From: sunderls <sunderls@126.com>
Date: Tue, 24 Jan 2017 03:58:53 +0900
Subject: [PATCH] Add yarn (#3432)

* add yarn.lock

* fix comment

* remove yarn test

* add test

* fix test

* try fix again

* try 3rd time

* check filename and firstline for yarn lockfile
---
 lib/linguist/generated.rb    | 11 ++++++++++-
 test/fixtures/Data/yarn.lock |  9 +++++++++
 test/test_generated.rb       |  3 +++
 3 files changed, 22 insertions(+), 1 deletion(-)
 create mode 100644 test/fixtures/Data/yarn.lock

diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index edd3b37a..fce3ab4b 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -80,7 +80,8 @@ module Linguist
       generated_jflex? ||
       generated_grammarkit? ||
       generated_roxygen2? ||
-      generated_jison?
+      generated_jison? ||
+      generated_yarn_lock?
     end
 
     # Internal: Is the blob an Xcode file?
@@ -479,5 +480,13 @@ module Linguist
       return lines[0].start_with?("/* parser generated by jison ") ||
              lines[0].start_with?("/* generated by jison-lex ")
     end
+
+    # Internal: Is the blob a generated yarn lockfile?
+    #
+    # Returns true or false.
+    def generated_yarn_lock?
+      return false unless name.match(/yarn\.lock/)
+      return lines[0].include?("# THIS IS AN AUTOGENERATED FILE")
+    end
   end
 end
diff --git a/test/fixtures/Data/yarn.lock b/test/fixtures/Data/yarn.lock
new file mode 100644
index 00000000..014e8983
--- /dev/null
+++ b/test/fixtures/Data/yarn.lock
@@ -0,0 +1,9 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+abab@^1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
+
+abbrev@1, abbrev@1.0.x:
+  version "1.0.9"
+  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.0.9.tgz#91b4792588a7738c25f35dd6f63752a2f8776135"
diff --git a/test/test_generated.rb b/test/test_generated.rb
index 6301d971..d12108d7 100644
--- a/test/test_generated.rb
+++ b/test/test_generated.rb
@@ -79,6 +79,9 @@ class TestGenerated < Minitest::Test
     generated_fixture_loading_data("Data/sourcemap.v3.map")
     generated_fixture_loading_data("Data/sourcemap.v1.map")
 
+    # Yarn locfile
+    generated_fixture_loading_data("Data/yarn.lock")
+
     # Specflow
     generated_fixture_without_loading_data("Features/BindingCulture.feature.cs")