Function AC

resources/vega.min.js:22874–22877

(t)

    return e ? e[0] : t.t;
  }
  function AC(t) {
    var e = t.children;
    return e ? e[e.length - 1] : t.t;
  }
  function MC(t, e, n) {
    var r = n / (e.i - t.i);
    ((e.c -= r), (e.s += n), (t.c += r), (e.z += n), (e.m += n));