Function Bl

resources/vega-lite.min.js:4971–4973

(e)

    return J(e, "stack");
  }
  function Bl(e) {
    return J(e, "fold");
  }
  function Vl(e) {
    return J(e, "extent") && !J(e, "density") && !J(e, "regression");
  }