Function fL

resources/vega.min.js:31145–31154

(t, e)

    return t && t.signal ? e.signalRef(t.signal) : !1 !== t;
  }
  function fL(t, e) {
    const n = Za(t.type);
    n || s("Unrecognized transform type: " + Dt(t.type));
    const r = GN(n.type.toLowerCase(), null, hL(n, t, e));
    return (
      t.signal && e.addSignal(t.signal, e.proxy(r)),
      (r.metadata = n.metadata || {}),
      r
    );
  }
  function hL(t, e, n) {
    const r = {},
      i = t.params.length;