1 files changed, 44 insertions, 0 deletions
diff --git a/lib/gitlab/dependency_linker/package_json_linker.rb b/lib/gitlab/dependency_linker/package_json_linker.rb
new file mode 100644
index 00000000000..330c95f0880
--- /dev/null
+++ b/lib/gitlab/dependency_linker/package_json_linker.rb
@@ -0,0 +1,44 @@
+module Gitlab
+  module DependencyLinker
+    class PackageJsonLinker < JsonLinker
+      self.file_type = :package_json
+
+      private
+
+      def link_dependencies
+        link_json('name', json["name"], &method(:package_url))
+        link_json('license', &method(:license_url))
+        link_json(%w[homepage url], URL_REGEX, &:itself)
+
+        link_packages
+      end
+
+      def link_packages
+        link_packages_at_key("dependencies", &method(:package_url))
+        link_packages_at_key("devDependencies", &method(:package_url))
+      end
+
+      def link_packages_at_key(key, &url_proc)
+        dependencies = json[key]
+        return unless dependencies
+
+        dependencies.each do |name, version|
+          link_json(name, version, link: :key, &url_proc)
+
+          link_json(name) do |value|
+            case value
+            when /\A#{URL_REGEX}\z/
+              value
+            when /\A#{REPO_REGEX}\z/
+              github_url(value)
+            end
+          end
+        end
+      end
+
+      def package_url(name)
+        "https://npmjs.com/package/#{name}"
+      end
+    end
+  end
+end