Function compareRef

resources/vega.min.js:32679–32692

(t)

        return r;
      },
      compareRef(t) {
        let e = !1;
        const n = (t) =>
            rO(t)
              ? ((e = !0), this.signalRef(t.signal))
              : (function (t) {
                    return t && t.expr;
                  })(t)
                ? ((e = !0), this.exprRef(t.expr))
                : t,
          r = V(t.field).map(n),
          i = V(t.order).map(n);
        return e ? XN(this.add(bO({ fields: r, orders: i }))) : QN(r, i);
      },
      keyRef(t, e) {
        let n = !1;
        const r = this.signals;