anchor.diff:                                   (string= (gethash "runAt" script-data) "document_start"))
          :all-frames-p (gethash "allFrames" script-data)
          :world-name (name extension)))
  -    ""))
  +    "[]"))
   
   (-> storage-local-get (buffer string) (values string &optional))
   (defun storage-local-get (buffer message-params)
  
positive.code:     (when style-sheet
        (setf (gethash message-params %style-sheets%)
              style-sheet))
      ""))
  
  (-> tabs-remove-css (string) string)
  (defun tabs-remove-css (message-params)
  
negative.code:          (style-sheet (gethash message-params %style-sheets%)))
      (ffi-buffer-remove-user-style buffer-to-remove style-sheet)
      (remhash message-params %style-sheets%)
      "null"))
  
  (-> tabs-execute-script (buffer string) string)
  (defun tabs-execute-script (buffer message-params)
  