Acessando objetos aninhados em JavaScript

const user = {
    id: 101,
    email: '[email protected]',
    personalInfo: {
        name: 'Jack',
        address: {
            line1: 'westwish st',
            line2: 'washmasher',
            city: 'wallas',
            state: 'WX'
        }
    }
}

const name = user.personalInfo.name;
const userCity = user.personalInfo.address.city;
Jolly Jellyfish