let z: bigint = seed + i * 0x9e3779b97f4a7c15;
    z = ( z ^ ( z >> 30 ) ) * 0xBF58476D1CE4E5B9;
    z = ( z ^ ( z >> 27 ) ) * 0x94D049BB133111EB;
    return z ^ ( z >> 31 );

    let z: bigint = seed + i * BigInt("0x9e3779b97f4a7c15");
    z = ( z ^ ( z >> BigInt(30) ) ) * BigInt("0xBF58476D1CE4E5B9");
    z = ( z ^ ( z >> BigInt(27) ) ) * BigInt(0x94D049BB133111EB);
    return z ^ ( z >> BigInt(31) );