Function P

resources/vega-lite.min.js:146–150

(e, t)

          : t(e);
  }
  function P(e, t) {
    if (0 === t.length) return !0;
    const n = t.shift();
    return (n in e && P(e[n], t) && delete e[n], S(e));
  }
  function N(e) {
    return e.charAt(0).toUpperCase() + e.substr(1);
  }