Add frozen string literal comment to files.

Gemfile

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 group :development do
   gem 'translations-manager', git: 'https://github.com/discourse/translations-manager.git'
 end

app/controllers/discourse_assign/assign_controller.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseAssign
   class AssignController < Admin::AdminController
     before_action :ensure_logged_in

app/mailers/assign_mailer.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_dependency 'email/message_builder'
 
 class AssignMailer < ActionMailer::Base

app/models/remind_assigns_frequency_site_settings.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_dependency 'enum_site_setting'
 
 class RemindAssignsFrequencySiteSettings < EnumSiteSetting

bin/pull_translations.rb

@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 # Usage:
 #   bundle install

config/routes.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 DiscourseAssign::Engine.routes.draw do
   put "/claim/:topic_id" => "assign#claim"
   put "/assign" => "assign#assign"

db/migrate/20190422200243_add_last_reminded_at_index.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddLastRemindedAtIndex < ActiveRecord::Migration[5.2]
   def change
     add_index :user_custom_fields, %i[name user_id], name: :idx_user_custom_fields_last_reminded_at,

jobs/regular/remind_user.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class RemindUser < Jobs::Base
     sidekiq_options queue: 'low'

jobs/scheduled/enqueue_reminders.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class EnqueueReminders < Jobs::Scheduled
     every 1.day

jobs/unassign_bulk.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class UnassignBulk < Jobs::Base
     def execute(args)

lib/discourse_assign/engine.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ::DiscourseAssign
   class Engine < ::Rails::Engine
     engine_name "discourse_assign"

lib/discourse_assign/helpers.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseAssign
   module Helpers
     def self.build_assigned_to_user(assigned_to_user_id, topic)

plugin.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # name: discourse-assign
 # about: Assign users to topics
 # version: 0.1

spec/components/topic_query_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe TopicQuery do

spec/integration/assign_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe 'integration tests' do

spec/jobs/regular/remind_user_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe Jobs::RemindUser do

spec/jobs/scheduled/enqueue_reminders_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe Jobs::EnqueueReminders do

spec/lib/pending_assigns_reminder_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe PendingAssignsReminder do

spec/lib/topic_assigner_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe TopicAssigner do

spec/requests/assign_controller_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseAssign::AssignController do

spec/serializers/topic_list_serializer_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe TopicListSerializer do