[Typescript] Defining exclusive properties with TypeScript
type A = {other: 'string', url: 'string'}
type B = {other: 'string', ids: 'string'}
type Exclusive<
T extends Record<PropertyKey, unknown>,
U extends Record<PropertyKey, unknown>
> =
| (T & { [k in Exclude<keyof U, keyof T>]?: never })
| (U & { [k in Exclude<keyof T, keyof U>]?: never })
type x = Exclusive<A, B>
/*
(A & {
ids?: undefined;
}) | (B & {
url?: undefined;
})
*/
