Method reduceFieldDef

resources/vega-lite.min.js:12140–12158

(e, n)

      if (n) return ma(n, t);
    }
    reduceFieldDef(e, n) {
      return (function (e, n, i, r) {
        return e
          ? D(e).reduce((i, o) => {
              const a = e[o];
              return t.isArray(a)
                ? a.reduce((e, t) => n.call(r, e, t, o), i)
                : n.call(r, i, a, o);
            }, i)
          : i;
      })(
        this.getMapping(),
        (t, n, i) => {
          const r = wa(n);
          return r ? e(t, r, i) : t;
        },
        n,
      );
    }
    forEachFieldDef(e, t) {
      Qa(
        this.getMapping(),