Function it

resources/vega.min.js:272–277

(t, e)

    return J(t) ? t : () => t;
  }
  function it(t, e) {
    let n;
    return (r) => {
      (n && clearTimeout(n), (n = setTimeout(() => (e(r), (n = null)), t)));
    };
  }
  function ot(t) {
    for (let e, n, r = 1, i = arguments.length; r < i; ++r)
      for (n in ((e = arguments[r]), e)) t[n] = e[n];