Keep only selected keys from a particular object in Javascript

reduce.js

let member = {
    id: 178,
    identifier: "User2",
    firstName: "Training",
    lastName: "User2",
    inactiveDate: "2007-09-10T18:52:28Z",
    inactiveFlag: true,
    officeEmail: "test@test.com",
    defaultEmail: "Office",
    primaryEmail: "test@test.com",
    defaultPhone: "Office",
}
let fields = ["id", "firstName", "lastName"]
const getReducedObject = (member, fields) => fields.reduce((acc, curr) => {
                                acc[curr] = member[curr]
                                return acc
                            }, {})
member = getReducedObject(member, fields)
console.log(member)