Update SourceURL to work better

config/initializers/10-discourse_iife.rb

@@ -1,3 +1,5 @@
 require 'discourse_iife'
+require 'source_url'
 
 Rails.application.assets.register_preprocessor('application/javascript', DiscourseIIFE)
+Rails.application.assets.register_postprocessor('application/javascript', SourceURL)

lib/discourse_iife.rb

@@ -32,7 +32,6 @@ class DiscourseIIFE < Sprockets::Processor
                      .sub("/app/assets/javascripts", "")
                      .sub("/test/javascripts", "")
       res << "\nwindow.__jshintSrc = window.__jshintSrc || {}; window.__jshintSrc['/assets#{req_path}'] = #{data.to_json};\n"
-      res << "\n//@ sourceURL=/#{context.logical_path}\n"
     end
 
     res

lib/es6_module_transpiler/tilt/es6_module_transpiler_template.rb

@@ -127,7 +127,6 @@ module Tilt
         req_path = "/assets/#{scope.logical_path}.#{extension}"
 
         @output << "\nwindow.__jshintSrc = window.__jshintSrc || {}; window.__jshintSrc['#{req_path}'] = #{data.to_json};\n"
-        @output << "\n//@ sourceURL=/#{scope.logical_path}\n"
       end
 
       @output

lib/source_url.rb

@@ -0,0 +1,15 @@
+class SourceURL < Tilt::Template
+  self.default_mime_type = 'application/javascript'
+
+  def prepare
+  end
+
+  def evaluate(scope, locals, &block)
+    code = ''
+    code << 'eval('
+    code << data.inspect
+    code << " + \"\\n//@ sourceURL=/#{scope.logical_path}\""
+    code << ");\n"
+    code
+  end
+end