export type PickWithOpt<T, KT extends keyof T, V> = {
[P in KT]?: T[P] extends V ? V : never
}
+
+// https://github.com/krzkaczor/ts-essentials Rocks!
+export type DeepPartial<T> = {
+ [P in keyof T]?: T[P] extends Array<infer U>
+ ? Array<DeepPartial<U>>
+ : T[P] extends ReadonlyArray<infer U>
+ ? ReadonlyArray<DeepPartial<U>>
+ : DeepPartial<T[P]>
+}