export type _AddUndefinedToPossiblyUndefinedPropertiesOfInterface<Base> = { [K in keyof Base]: Base[K] extends Exclude<Base[K], undefined> ? _AddUndefinedToPossiblyUndefinedPropertiesOfInterface<Base[K]> : _AddUndefinedToPossiblyUndefinedPropertiesOfInterface<Base[K]> | undefined;};Type Parameters
Base
{ [K in keyof Base]: Base[K] extends Exclude<Base[K], undefined> ? _AddUndefinedToPossiblyUndefinedPropertiesOfInterface<Base[K]> : _AddUndefinedToPossiblyUndefinedPropertiesOfInterface<Base[K]> | undefined;}