Days until temperature inreases

function dailyTemperatures(temperatures) {
  const arrTemp = new Array(temperatures.length).fill(0);
  const stack = [];

  for (let i = 0; i < temperatures.length; i++) {
      while(stack.length > 0 && stack[stack.length - 1][0] < temperatures[i]) {
          const currentNum = stack.pop();
          arrTemp[currentNum[1]] = i - currentNum[1];
      }
      // store temperature and idx of current element
      stack.push([temperatures[i], i]);
  }
    return arrTemp;
};