code: function getDefs(chalk) {
    return {
      keyword: chalk.cyan,
      capitalized: chalk.yellow,
      jsx_tag: chalk.yellow,
      punctuator: chalk.yellow,
      // bracket:  intentionally omitted.
      number: chalk.magenta,
      string: chalk.green,
      regex: chalk.magenta,
      comment: chalk.grey,
      invalid: chalk.white.bgRed.bold,
    };
  }
docs: Chalk styles for token types.