美化企业文字展示，增加临时测试页面。

yangdelong

2021-04-08 0f6673f95ac0b382b6ee28b93661589a4895e4d1

 src/components/plugin/cluster-layer/leaflet.markercluster-src.js

@@ -574,7 +574,7 @@
      var i, l, layer

      if (!isFinite(this._map.getMaxZoom())) {
          // eslint-disable-next-line no-throw-literal
        // eslint-disable-next-line no-throw-literal
        throw 'Map has no maxZoom specified'
      }