async/await not working with mongoose instance methods

Question

I'm try to create user mongoose document which require a storage path. I want to await for directory to be created and path resolved. But it is not working and after user is saved, user.storagePath is still undefined. please figure out problem.

Following is code of createStorage()

const getMountRoot = require('../configuration/configuration').getMountRoot
const path = require('path')
const fs = require('fs')
const Logger = require('../configuration/configuration').getLogger

module.exports = (email, firstName, secondName) => {
  email = String(email).toLowerCase().replace(/[@_\.\-]/g, '')
  firstName = String(firstName).toLowerCase().replace(/[@_\.\-]/g, '')
  secondName = String(secondName).toLowerCase().replace(/[@_\.\-]/g, '')

  let storagePath = path.join(getMountRoot(), `${secondName}${email}${firstName}`)
  return fs.promises.mkdir(storagePath, { recursive: true })
    .then(() => { return storagePath })
    .catch(() => {Logger.log(err); return storagePath})
}

And following is instance method

const createStorage = require('../extra/create-storage')

userSchema.methods.createStorage = async function() {
  this.storagePath = await createStorage(this.email, this.firstName, this.secondName)
}

Kindly note that I call createStorage() on User instance before calling the save()

Answer 1

As @qqilihq figured, I need to await at instance method call. Doing that worked correctly.