Function zeroPad

cli/tabler.js:8–13

(n, l, s)

}

function zeroPad (n, l, s) {
  s = s === undefined ? '0' : s;
  n = n.toString();
  let delta = Math.max(0, l - n.length);
  return Array(delta + 1).join(s) + n;
}

function formatDate (dt) {
  dt = dt instanceof Date ? dt : new Date(dt);