Temperatures puzzle discussion

Puzzles
827

Hi i dont understand why my code isn’t workin i tested on the terminal of node.js and it work but now in codingame didn’t, any one can tell me why? thanks before hand.

   const n = parseInt(readline()); // the number of temperatures to analyse
let numbers = readline().split(' ');
let pos = [];
let neg = [];
let num;
if(n > 0){
for(i in numbers)
{
    const t = parseInt(numbers[i])
    if(numbers[i]<0){
        neg.push(numbers[i]);
    }
    else if(numbers[i]>0){
        pos.push(numbers[i]);
    }
    pos.sort(function(a,b){return a-b});
    neg.sort(function(a,b){return b-a});
    
    }
    

    if(pos[0]===Math.abs(neg[0])) {
        console.log(pos[0])
    }else if(pos[0]<Math.abs(neg[0])){
        console.log(pos[0]);
    }else if (pos[0]>Math.abs(neg[0]) ||pos[0]===undefined){
        console.log(neg[0]);
    }
    
   
}

else{
    console.log(0);
}