let a = 5;      //  00000000000000000000000000000101

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

let b = -5;     //  11111111111111111111111111111011

b >>= 2;        //  11111111111111111111111111111110
console.log(b);
// expected output: -2