website/playground/PrettierFormat.js/PrettierFormat/componentDidUpdate
class PrettierFormat:  componentDidUpdate(prevProps) {
    for (const key of [
      "code",
      "options",
      "debugAst",
      "debugDoc",
      "debugComments",
      "reformat",
    ]) {
      if (prevProps[key] !== this.props[key]) {
        this.format();
        break;
      }
    }
  }