Method warn

src/data-types.js:37–42

(link, text)

    return this.name;
  }
  static warn(link, text) {
    if (!warnings[text]) {
      warnings[text] = true;
      logger.warn(`${text} \n>> Check: ${link}`);
    }
  }
  static extend(oldType) {
    return new this(oldType.options);
  }