var largestNumber = function (nums) {
let comp = (a, b) => {
a = a.split("").reverse().join("");
b = b.split("").reverse().join("");
return a.localeCompare(b) > 0 ? 1 : 0;
};
return nums.map(v => '' + v).sort(comp).reverse().join('');
};
console.log(largestNumber([3, 30, 34, 5, 9]));
In nodejs
output: 9534330
In javascript
output: 9534303
What is happening?
As said in the comments your compare function is non deterministic and the 2 engines result in different outcomes. You could try the following in both versions to see consistent results 9534330.
var largestNumber = function (nums) {
let comp = (a, b) => {
a = a.split("").reverse().join("");
b = b.split("").reverse().join("");
return a.localeCompare(b);
};
return nums.map(v => '' + v).sort(comp).reverse().join('');
};
console.log(largestNumber([3, 30, 34, 5, 9]));