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Model with different types

@RiccardoOdone•Suggest a tip•

By using different types you can make the compiler check you are passing the right things to the right functions.

type User = { id?: number, name: string }

const createUser = (user: User) => {}
const updateUser = (user: User) => {}

createUser(persistedUser) // ⛔️
updateUser(newUser) // ⛔️

type User = { name: string }
type PersistedUser =  User & { id: number }

const createUser = (user: User) => {}
const updateUser = (user: PersistedUser) => {}

createUser(persistedUser) // ✅ Does not compile
updateUser(newUser) // ✅ Does not compile
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