Trying to hash a password using bcrypt inside an async function

await dosent wait for bcrypt.hash because bcrypt.hash does not
return a promise. Use the following method, which wraps bcrypt in a promise in order to use await.

async function hashPassword (user) {

  const password = user.password
  const saltRounds = 10;

  const hashedPassword = await new Promise((resolve, reject) => {
    bcrypt.hash(password, saltRounds, function(err, hash) {
      if (err) reject(err)
      resolve(hash)
    });
  })

  return hashedPassword
}

Update:-

The library has added code to return a promise which will make the use
of async/await possible, which was not available
earlier. the new way of usage would be as follows.

const hashedPassword = await bcrypt.hash(password, saltRounds)