Function et

resources/vega.min.js:255–258

(t, e)

                : 0),
    tt = (t, e) => (1 === t.length ? et(t[0], e[0]) : nt(t, e, t.length)),
    et = (t, e) =>
      function (n, r) {
        return K(t(n), t(r)) * e;
      },
    nt = (t, e, n) => (
      e.push(0),
      function (r, i) {