Type Alias EnsureNullableType<Original>

EnsureNullableType: Original extends Primitive
    ? Original
    : Original extends ReadonlyArray<any>
        ? { [Key in keyof Original]: EnsureNullableType<Original[Key]> }
        : Simplify<
            {
                [Key in RequiredKeysOf<Extract<Original, object>> as IsNullable<
                    Original[Key],
                > extends true
                    ? never
                    : Key]: EnsureNullableType<Original[Key]>
            } & {
                [Key in OptionalKeysOf<Extract<Original, object>>]?:
                    | EnsureNullableType<Original[Key]>
                    | null
            } & {
                [Key in RequiredKeysOf<Extract<Original, object>> as IsNullable<
                    Original[Key],
                > extends true
                    ? Key
                    : never]?: EnsureNullableType<Original[Key]>
                | null
            },
        >