Function add

resources/vega.min.js:5538–5545

(t)

        for (const e in t) 0 === t[e].num && delete t[e];
      },
      add(t) {
        const e = this.cellkey(t),
          n = this.cell(e, t);
        if (((n.num += 1), this._countOnly)) return;
        n.store && n.data.add(t);
        const r = n.agg;
        for (let e = 0, n = r.length; e < n; ++e) r[e].add(r[e].get(t), t);
      },
      rem(t) {
        const e = this.cellkey(t),
          n = this.cell(e, t);