Function f3

lib/formatter.js:201–204

(n)

    return (n < 10) ? ('0' + n) : n;
  }
  function f3(n) {
    // Format integers to have at least three digits.
    return (n < 10) ? ('00' + n) : (n < 100) ? ('0' + n) : n;
  }

  return d.getUTCFullYear()   + '-' +
    f2(d.getUTCMonth() + 1)   + '-' +