Google maps vue谷歌地图-仅为'fitBounds'调用设置最大缩放级别

第一次使用vue谷歌地图。每当我向地图添加标记，并执行

fitBounds

我的代码：

        setMapBounds(markers = null) {
            if (!markers) {
                markers = this.mapMarkers
            }

            //set bounds of the map
            this.$refs.gmap.$mapPromise.then((map) => {
                if (markers.length) {
                    this.initialZoom = 6;
                    const bounds = new google.maps.LatLngBounds();
                    for (let m of markers) {
                        bounds.extend(this.getCreatorLocation(m));
                    }

                    map.fitBounds(bounds);
                } else {
                    this.initialZoom = 5;
                }
            });
        },

如何在

fitBounds

map.fitBounds(bounds);
var listener = google.maps.event.addListener(map, "idle", function() { 
  if (map.getZoom() > 16) map.setZoom(16); 
  google.maps.event.removeListener(listener); 
});