Switch to use Rails built-in watchers and reloader

Gemfile.lock

@@ -84,7 +84,6 @@ PATH
       dry-configurable (> 0.1, <= 7.0)
       dry-container (~> 0.6)
       dry-inflector (~> 0.1)
-      filewatcher (~> 1.1.1)
       ice_nine (~> 0.11)
       redcarpet (~> 3.4)
       sinatra (>= 1.4, < 3.0)
@@ -111,8 +110,6 @@ GEM
     dry-core (0.6.0)
       concurrent-ruby (~> 1.0)
     dry-inflector (0.2.0)
-    filewatcher (1.1.1)
-      optimist (~> 3.0)
     ice_nine (0.11.2)
     json (2.3.1)
     method_source (0.9.0)
@@ -125,7 +122,6 @@ GEM
       racc (~> 1.4)
     nokogiri (1.11.7-x86_64-darwin)
       racc (~> 1.4)
-    optimist (3.0.1)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)

coprl.gemspec

@@ -28,7 +28,6 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'tzinfo', '>=1.1', '< 3.0'
   spec.add_runtime_dependency 'tzinfo-data', '~>1.2018'
   spec.add_runtime_dependency 'redcarpet', '~>3.4'
-  spec.add_runtime_dependency 'filewatcher', '~> 1.1.1'
   spec.add_runtime_dependency 'zeitwerk', '~> 2.1'
 
   spec.add_development_dependency 'thor', '~> 1.1.0'

lib/coprl/presenters/rails/railtie.rb

@@ -1,5 +1,3 @@
-require 'filewatcher'
-
 module Coprl
   module Presenters
     module Rails
@@ -15,20 +13,14 @@ class Railtie < ::Rails::Railtie
 
         WATCH = -> {
           return unless ::Rails.env.development?
+
           path = ::Rails.root.join('app', '**', '*.pom')
-          puts "Watching #{path} for changes..."
-          filewatcher = Filewatcher.new(path)
-          Thread.new(filewatcher) do |fw|
-            fw.watch do |f|
-              puts "Detected updated POM file: #{f}"
-              begin
-                BOOT.call
-              rescue Exception => exc
-                puts exc.backtrace
-                puts exc.message
-              end
-            end
+          file_watcher = ActiveSupport::FileUpdateChecker.new(Dir[path]) do
+            BOOT.call
           end
+
+          ::Rails.application.reloaders << Reloader.new(file_watcher)
+
         } unless defined?(WATCH)
 
         config.after_initialize do

lib/coprl/presenters/rails/reloader.rb

@@ -0,0 +1,15 @@
+module Coprl
+  module Presenters
+    module Rails
+      class Reloader
+        def initialize(file_watcher)
+          @file_watcher = file_watcher
+        end
+
+        def updated?
+          @file_watcher.execute_if_updated
+        end
+      end
+    end
+  end
+end