Max element of each array using spread operator

Max_element_of_arrayS.js

var arr = [[4, 2, 7, 1], [20, 70, 40, 90], [1, 2, 0], [1, 2, 0] , [1, 2, 0] , [1, 2, 0]]; // ➞ [7, 90, 2]

function findLargestNums(arr) {
  return arr.map(x => Math.max(...x));
}

console.log(findLargestNums(arr))