Function cn

resources/vega-lite.min.js:724–726

(e)

  }
  const ln = new Set(["count", "valid", "missing", "distinct"]);
  function cn(e) {
    return t.isString(e) && ln.has(e);
  }
  const un = new Set(["count", "sum", "distinct", "valid", "missing"]),
    fn = new Set(["mean", "average", "median", "q1", "q3", "min", "max"]);
  function dn(e) {