aureooms/rejuvenate

export const fixedOrder =
    (sortToTop, key = (x) => x) =>
    (a, b) => {
        const ka = key(a);
        const kb = key(b);
        if (ka === kb) return 0;
        const na = sortToTop[ka];
        const nb = sortToTop[kb];
        if (na !== undefined && nb === undefined) return -1;
        if (na === undefined && nb !== undefined) return 1;
        if (na === undefined && nb === undefined) return ka < kb ? -1 : 1;
        return na < nb ? -1 : 1;
    };