SOURCE

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
    var tatol = [];
    nums.map((item, index) => {
        if(item + nums[index + 1] === target) {
            // console.log(item, nums[index + 1])
            total = [index, index + 1]
            // console.log(tatol)
        }
    })
    console.log(tatol)
};
var nums = [2,7,11,15],
      target = 9;
twoSum(nums, target)