Type Alias StrictSubset<T, R, O>

StrictSubset: RequireFrom<T, R> & ExtractFrom<T, O>

Create a strict object subset.

Type Parameters

T extends object
Source object type
R extends keyof T
Keys that must be required
O extends keyof T
Keys that should be optional

Remarks

Builds a new object type consisting only of explicitly required and optional properties. All other properties are excluded.

Example

type User = { id: number; name: string; email?: string; phone?: string };
type UserSubset = StrictSubset< User, 'id', 'email' | 'phone' >;
// { id: number; email?: string; phone?: string }