Interface ObjectUtils<Raw, Parsed>

interface ObjectUtils<Raw, Parsed> {
    extend: <RawExtension, ParsedExtension>(
        schemas: ObjectSchema<RawExtension, ParsedExtension>,
    ) => ObjectSchema<Raw & RawExtension, Parsed & ParsedExtension>;
    passthrough: () => ObjectSchema<
        Raw & { [key: string]: unknown },
        Parsed & { [key: string]: unknown },
    >;
}