Method mapLayer

resources/vega-lite.min.js:4440–4442

(e, t)

      throw new Error(Bn(e));
    }
    mapLayer(e, t) {
      return { ...e, layer: e.layer.map((e) => this.mapLayerOrUnit(e, t)) };
    }
    mapHConcat(e, t) {
      return { ...e, hconcat: e.hconcat.map((e) => this.map(e, t)) };
    }