Equivalent to Partial<Record<K, V>>.
Partial<Record<K, V>>
type Result = PartialRecord<"a" | "b", number>;// ^?// {// a?: number;// b?: number;// }; Copy
type Result = PartialRecord<"a" | "b", number>;// ^?// {// a?: number;// b?: number;// };
Equivalent to
Partial<Record<K, V>>.