More Utility Types

• Omit is the opposite of Pick—remove instead of select
• Required is the opposite of Partial—add instead of remove
• Exclude/Extract work on unions, not object properties
• NonNullable is shorthand for Exclude<T, null | undefined>

// Remove id, then make everything optional
type UserUpdate = Partial<Omit<User, 'id'>>

// Keep only active statuses, remove null
type ActiveStatus = NonNullable<Exclude<Status, 'deleted'>>