Function padCenter

lib/sprintf.js:19–23

(s, n, c)

}

function padCenter(s, n, c) {
  let k = Math.max(0, n - len(s));
  let r = (k - k % 2) / 2, l = k - r;
  return c.repeat(l) + s + c.repeat(r);
}

const tsprintf = function() {
  const args = Array.from(arguments);