[1, 2, Array[]]

 

 

function maxSubArray(nums){
  let sum = -Infinity;
  let max = -Infinity;
  for(let i = 0; i < nums.length; i++){
    if(sum < 0){
      sum = nums[i];
    }else{
      sum += nums[i];
    }
    max = Math.max(sum, max);
  }
  return max;
}