code: function parseFile (args) {
      var file = args.file;
      var next = args.next;
  
      try {
        // Optimistically try to parse the file as JSON.
        return JSON.parse(file.data);
      }
      catch (error) {
        if (isJsonFile(file)) {
          // This is a JSON file, but its contents are invalid
          throw error;
        }
        else {
          // This probably isn't a JSON file, so call the next parser plugin
          next();
        }
      }
    }
docs: Parses the given file's data, in place.
  
  @param {File} args.file - The {@link File} to parse.
  @param {function} args.next - Calls the next plugin, if the file data cannot be parsed
  @returns {*}