How to use the release-please/build/src/release-pr.ReleaseType.Node function in release-please

function releaseTypeFromRepoLanguage(language: string | null): ReleaseType {
  if (language == null) {
    throw Error('repository has no detected language');
  }
  switch (language.toLowerCase()) {
    case 'ruby':
      return ReleaseType.Ruby;
    case 'java':
      return ReleaseType.JavaYoshi;
    case 'typescript':
    case 'javascript':
      return ReleaseType.Node;
    case 'php':
      return ReleaseType.PHPYoshi;
    default:
      throw Error(`unknown release type: ${language}`);
  }
}