How to use the gitlab.Gitlab function in gitlab

function authenticate({ gitHubToken, gitLabToken }) {
  octokit = Octokit()
  octokit.authenticate({ type: 'token', token: gitHubToken })
  gitlab = new Gitlab({ personaltoken: gitLabToken })
}

function init(tokens) {
  github = githubInit(tokens.githubToken)
  gitlab = new Gitlab({ personaltoken: tokens.gitlabToken })
  getTwitterFollowers = twitterFollowersCount({
    consumer_key: tokens.twitterConsumerKey,
    consumer_secret: tokens.twitterConsumerSecret,
    access_token_key: tokens.twitterAccessTokenKey,
    access_token_secret: tokens.twitterAccessTokenSecret,
  })
}

module.exports = async (opts, path, content, message) => {
  const gitlab = new Gitlab({
    host: opts.instance,
    token: opts.token
  });

  content = Buffer.from(content).toString('base64');
  const response = await gitlab.RepositoryFiles.edit(
    opts.projectId,
    path,
    opts.branch,
    content,
    message, {
      encoding: 'base64'
    }
  ).catch(error => {
    throw new Error(error);
  });

function getGitLabClient(token) {
  const client = new Gitlab({
    token,
  });

  return client;
}

constructor(public readonly repoMetadata: RepoMetaData, public readonly repoCredentials: GitLabAPICredentials) {
    this.fetch = fetch
    this.api = new Gitlab(repoCredentials)
    this.hostURL = repoCredentials.host
  }

module.exports = async (opts, path, content, message) => {
  const gitlab = new Gitlab({
    host: opts.instance,
    token: opts.token
  });

  content = Buffer.from(content).toString('base64');
  const response = await gitlab.RepositoryFiles.create(
    opts.projectId,
    path,
    opts.branch,
    content,
    message, {
      encoding: 'base64'
    }
  ).catch(error => {
    throw new Error(error);
  });