Function In

resources/vega-lite.min.js:1022–1033

(e, t)

        : n;
  }
  function In(e, t) {
    const n = e.value,
      i = t.value;
    if (null == n || null === i) return { explicit: e.explicit, value: null };
    if (($n(n) || wn(n)) && ($n(i) || wn(i)))
      return { explicit: e.explicit, value: Wn(n, i) };
    if ($n(n) || wn(n)) return { explicit: e.explicit, value: n };
    if ($n(i) || wn(i)) return { explicit: e.explicit, value: i };
    if (!($n(n) || wn(n) || $n(i) || wn(i)))
      return { explicit: e.explicit, value: Un(n, i) };
    throw new Error("It should never reach here");
  }
  function Bn(e) {
    return `Invalid specification ${Q(e)}. Make sure the specification includes at least one of the following properties: "mark", "layer", "facet", "hconcat", "vconcat", "concat", or "repeat".`;
  }