docs: def escapejson_filter(value):
      """
      Escape `value` to prevent </script> and unicode whitespace attacks. If
      `value` is not a string, JSON-encode it first.
      """
      if isinstance(value, six.string_types):
          string = value
      else:
          string = json.dumps(value, cls=DjangoJSONEncoder)
      return mark_safe(escapejson(string))