type Detections<T, U, D> = D extends undefined ? T : T | U;
interface BaseDetector<T extends Record<string, any> = Record<string, any>, U extends Record<string, any> = Record<string, any>> {
    name: string;
    resolveLng: (options: {
        lookup: any;
        lngs: string[];
    } & T) => string | undefined | null;
    persistLng?: (lng: string, options: {
        lookup: any;
    } & U) => void;
}

type Detector = BaseDetector<Record<string, any>, {
    lngs: string[];
}>;

export type { Detector as D, Detections as a };