371. Sum of Two Integers.js

/**
 * @param {number} a
 * @param {number} b
 * @return {number}
 */
var getSum = function(a, b) {
  if (b == 0) {
    return a;
  }

  while (b !== 0) {
    var carry = a & b;
    a = a ^ b;
    b = carry << 1;
  }

  return a;
};

console.log(getSum(-8, -12));