When using automatic file includes (es6, hbs) from plugins, allow the

asset pipeline to find new and deleted files with deleting the `tmp`
folder and restarting the server.

app/assets/javascripts/application.js.erb

@@ -6,4 +6,16 @@ require_asset ("./main_include.js")
 DiscoursePluginRegistry.javascripts.each { |js| require_asset(js) }
 DiscoursePluginRegistry.handlebars.each { |hb| require_asset(hb) }
 
+# Load any glob dependencies
+DiscoursePluginRegistry.asset_globs.each do |g|
+  root, extension = *g
+  Dir.glob("#{root}/**/*") do |f|
+    if File.directory?(f)
+      depend_on(f)
+    elsif f.to_s.end_with?(".#{extension}")
+      require_asset(f)
+    end
+  end
+end
+
 %>

lib/discourse_plugin_registry.rb

@@ -4,23 +4,27 @@
 class DiscoursePluginRegistry
 
   class << self
-    attr_accessor :javascripts
-    attr_accessor :server_side_javascripts
-    attr_accessor :admin_javascripts
-    attr_accessor :stylesheets
-    attr_accessor :mobile_stylesheets
-    attr_accessor :desktop_stylesheets
-    attr_accessor :sass_variables
-    attr_accessor :handlebars
-    attr_accessor :custom_html
-    attr_accessor :serialized_current_user_fields
+    attr_writer :javascripts
+    attr_writer :server_side_javascripts
+    attr_writer :admin_javascripts
+    attr_writer :stylesheets
+    attr_writer :mobile_stylesheets
+    attr_writer :desktop_stylesheets
+    attr_writer :sass_variables
+    attr_writer :handlebars
+    attr_writer :serialized_current_user_fields
 
+    attr_accessor :custom_html
 
     # Default accessor values
     def javascripts
       @javascripts ||= Set.new
     end
 
+    def asset_globs
+      @asset_globs ||= Set.new
+    end
+
     def admin_javascripts
       @admin_javascripts ||= Set.new
     end
@@ -68,6 +72,10 @@ class DiscoursePluginRegistry
     Archetype.register(name, options)
   end
 
+  def self.register_glob(root, extension)
+    self.asset_globs << [root, extension]
+  end
+
   def self.register_asset(asset, opts=nil)
     if asset =~ /\.js$|\.js\.erb$|\.js\.es6$/
       if opts == :admin
@@ -143,6 +151,7 @@ class DiscoursePluginRegistry
     desktop_stylesheets.clear
     sass_variables.clear
     serialized_current_user_fields
+    asset_globs.clear
   end
 
   def self.setup(plugin_class)

lib/plugin/instance.rb

@@ -26,19 +26,10 @@ class Plugin::Instance
     @color_schemes = []
 
     if @path
-
-      # Automatically include all ES6 JS files
-      dir = File.dirname(@path)
-      Dir.glob("#{dir}/assets/javascripts/**/*.js.es6") do |f|
-        relative = f.sub("#{dir}/assets/", "")
-        register_asset(relative)
-      end
-
-      # Automatically include all hbs files
-      Dir.glob("#{dir}/assets/javascripts/**/*.hbs") do |f|
-        relative = f.sub("#{dir}/assets/", "")
-        register_asset(relative)
-      end
+      # Automatically include all ES6 JS and hbs files
+      root_path = "#{File.dirname(@path)}/assets/javascripts"
+      DiscoursePluginRegistry.register_glob(root_path, 'js.es6')
+      DiscoursePluginRegistry.register_glob(root_path, 'hbs')
     end
   end