immutability-11.ts

import { useImmer } from "use-immer"

const [users, setUsers] = useImmer([
  { id: 1, name: "Bob", age: 24, emailConfirmed: false },
  { id: 2, name: "Sarah", age: 30, emailConfirmed: true },
  { id: 3, name: "Kevin", age: 20, emailConfirmed: false },
])
//when updating a user
setUsers(draft => {
  draft[draft.findIndex(({ id }) => id === confirmedUserId)].emailConfirmed = true
})