whole_func_string: function asyncProcessFileErrorWrapper(e) {
          if (typeof e !== 'object') e = new Error('' + e);
          e.file = relativePath;
          e.treeDir = srcDir;
          throw e;
        }
func_code_string: function asyncProcessFileErrorWrapper(e) {
          if (typeof e !== 'object') e = new Error('' + e);
          e.file = relativePath;
          e.treeDir = srcDir;
          throw e;
        }
func_documentation_string: TODO(@caitp): error wrapper is for API compat, but is not particularly useful. istanbul ignore next