Allow for customizing what files get watched in local dev along with …

…the defaults. Fixes #1747 Fixes #920 (#1767)

src/lucky/server_settings.cr

@@ -5,20 +5,35 @@ module Lucky::ServerSettings
 
   extend self
 
+  # The host for your local development.
+  # Depending on your setup, you may need `localhost`, `127.0.0.1`, or `0.0.0.0`
   def host : String
     settings["host"].as_s
   end
 
+  # The port to run your local dev server
   def port : Int32
     ENV["DEV_PORT"]?.try(&.to_i) || settings["port"].as_i
   end
 
+  # This is the port the dev watcher service will run on
   def reload_port : Int32
     ENV["RELOAD_PORT"]?.try(&.to_i) || settings["reload_port"]?.try(&.as_i) || 3001
   end
 
-  private def settings
-    YAML.parse(yaml_settings_file)
+  # Watch additional paths for changes
+  def reload_watch_paths : Array(String)
+    settings["extra_watch_paths"]?.try(&.as_a.map(&.as_s)) || [] of String
+  end
+
+  @@__settings : YAML::Any? = nil
+
+  private def settings : YAML::Any
+    if @@__settings.nil?
+      @@__settings = YAML.parse(yaml_settings_file)
+    else
+      @@__settings.as(YAML::Any)
+    end
   end
 
   private def yaml_settings_file

tasks/watch.cr

@@ -325,13 +325,13 @@ class Watch < LuckyTask::Task
       when "sse"
         build_commands << "-Dlivereloadsse"
         watcher_class = LuckySentry::ServerSentEventWatcher.new
-        files.push("./public/css/**/*.css", "./public/js/**/*.js")
+        files.concat(Lucky::ServerSettings.reload_watch_paths)
       when "browsersync"
         watcher_class = LuckySentry::BrowsersyncWatcher.new
       else
         build_commands << "-Dlivereloadws"
         watcher_class = LuckySentry::WebSocketWatcher.new
-        files.push("./public/css/**/*.css", "./public/js/**/*.js")
+        files.concat(Lucky::ServerSettings.reload_watch_paths)
       end
     end