Type Alias DeepPartial<T>

DeepPartial: T extends Function
| Date
    ? T
    : T extends (infer U)[]
        ? DeepPartial<U>[]
        : T extends ReadonlyArray<infer U>
            ? ReadonlyArray<DeepPartial<U>>
            : T extends Map<infer K, infer V>
                ? Map<K, DeepPartial<V>>
                : T extends ReadonlyMap<infer K, infer V>
                    ? ReadonlyMap<K, DeepPartial<V>>
                    : T extends Set<infer U>
                        ? Set<DeepPartial<U>>
                        : T extends ReadonlySet<infer U>
                            ? ReadonlySet<DeepPartial<U>>
                            : T extends PlainObject
                                ? { [K in keyof T]?: DeepPartial<(...)[(...)]> }
                                : T

type User = { id: number; profile: { name: string; address: { city: string } } };
type PartialUser = DeepPartial< User >;
// { id?: number; profile?: { name?: string; address?: { city?: string } } }
Copy