javascript array reverse not working code example

Example 1: js reverse nested array

var reversed = array.map(function reverse(item) {
    return Array.isArray(item) && Array.isArray(item[0]) 
               ? item.map(reverse) 
               : item.reverse();
});

Example 2: reverse array in javascript

const reverseArray = arr => arr.reduce((acc, val) =>  [val, ...acc], [])