Type Alias NarrowPartial<O, T>

NarrowPartial: T extends object
    ? DrainOuterGeneric<
        {
            [K in keyof O & string]: K extends keyof T
                ? T[K] extends NotNull
                    ? Exclude<O[K], null>
                    : T[K] extends object
                        ? SimplifyDeep<O[K] & NarrowPartial<O[K], T[K]>>
                        : T[K] extends O[K]
                            ? T[K]
                            : KyselyTypeError<
                                `$narrowType() call failed: passed type does not exist in '${K}'s type union`,
                            >
                : O[K]
        },
    >
    : never