let a = 5;      //  00000000000000000000000000000101

a >>= 2;        //  00000000000000000000000000000001
console.log(a);
// expected output: 1

let b = -5;     // -00000000000000000000000000000101

b >>= 2;        // -00000000000000000000000000000010
console.log(b);
// expected output: -2