Type Alias UnionToIntersection<T>

UnionToIntersection: (T extends T ? (value: T) => void : never) extends (
    value: infer R,
) => void
    ? R & T
    : never

Converts a union type into an intersection type.

type Result = UnionToIntersection<
	| { a: string }
	| { b: number }
>;
//   ^?
// { a: string } & { b: number }