在Firebase Cloud Functions的/tmp中创建子目录是否需要fs.mkdir()？

const admin = require('firebase-admin');
admin.initializeApp();

const functions = require('firebase-functions');
const { Storage } = require('@google-cloud/storage');

const storage = new Storage();
const bucket = storage.bucket('<your-bucket-name>');

exports.createDirectory = functions.https.onRequest((req, res) => {
  const directoryName = 'subdirectory';
  const directory = bucket.directory(directoryName);

  directory
    .exists()
    .then((data) => {
      const exists = data[0];

      if (!exists) {
        return directory.create();
      } else {
        throw new Error('Directory already exists');
      }
    })
    .then(() => {
      res.status(200).send('Subdirectory created successfully');
    })
    .catch((error) => {
      res.status(500).send(error.message);
    });
});