Method onComment

bin/yarn-standalone.js:34575–34590

(token)

  }

  onComment(token) {
    const value = token.value;
    (0, (_invariant || _load_invariant()).default)(typeof value === 'string', 'expected token value to be a string');

    const comment = value.trim();

    const versionMatch = comment.match(VERSION_REGEX);
    if (versionMatch) {
      const version = +versionMatch[1];
      if (version > (_constants || _load_constants()).LOCKFILE_VERSION) {
        throw new (_errors || _load_errors()).MessageError(`Can't install from a lockfile of version ${version} as you're on an old yarn version that only supports ` + `versions up to ${(_constants || _load_constants()).LOCKFILE_VERSION}. Run \`$ yarn self-update\` to upgrade to the latest version.`);
      }
    }

    this.comments.push(comment);
  }

  next() {
    const item = this.tokens.next();