Function Pt

resources/vega.min.js:581–590

(t)

    );
  }
  function Pt(t) {
    var e = Object.create(null),
      n = [];
    return (
      t.forEach(function (t) {
        for (var r in t) r in e || n.push((e[r] = r));
      }),
      n
    );
  }
  function jt(t, e) {
    var n = t + "",
      r = n.length;