Replace eslint-rails-ee with direct calls to eslint

lib/tasks/eslint.rake

@@ -0,0 +1,25 @@
+task "eslint" => "eslint:check"
+
+namespace "eslint" do
+  def yarn_path
+    Rails.root.join("bin", "yarn").to_s
+  end
+
+  def config_file
+    Rails.root.join("config", "eslint.json").to_s
+  end
+
+  def js_files
+    Rails.application.assets.each_file.select do |file|
+      file.ends_with?(".js") && !file.match?(%r{/(gems|vendor|i18n)/})
+    end
+  end
+
+  task :check => :environment do
+    system(yarn_path, "run", "eslint", "-c", config_file, *js_files) || abort
+  end
+
+  task :fix => :environment do
+    system(yarn_path, "run", "eslint", "-c", config_file, "--fix", *js_files) || abort
+  end
+end