option chaining javascript jsconfig code example

Example 1: conditional chaining chrome

const nameLength = db?.user?.name?.length; // property
const adminOption = db?.user?.validateAdminAndGetPrefs?.().option; // functions
const optionLength = db?.user?.preferences?.[optionName].length; // dynamic property
const userName = usersArray?.[userIndex].name; // on arrays

Example 2: optional-chaining operator

if (user?.team?.subscription?.invoices) {
  //
}