How to get parental salt as a string?

[snop]

const SteamUser = require('steam-user')

const client = new SteamUser()

client.logOn({
    accountName: 'login',
    password: 'password',
})

client.on('loggedOn', (details, parental) => {
    console.log(parental.salt.toString())
})

It gives it away

[Dr. McKay]

What kind of string do you want? It's a binary value.