Function M

resources/vega-lite.min.js:174–176

(e)

    return e.replace(/(\[|\]|\.|'|")/g, "\\$1");
  }
  function M(e) {
    return `${t.splitAccessPath(e).map(E).join("\\.")}`;
  }
  function R(e, t, n) {
    return e.replace(
      new RegExp(t.replace(/[-/\\^$*+?.()|[\]{}]/g, "\\$&"), "g"),