ERR_NAME_NOT_RESOLVED while zooming in with ImageryClarity

[danieloliveira117]

Describe the bug

Invalid url (ERR_NAME_NOT_RESOLVED) while zooming in when using the ImageryClarity basemap.

URL: https://clarity.maptilemaps.arcgis.com/arcgis/rest/services/World_Imagery/MapServer/tile/18/104319/67391/8/8?f=json

To Reproduce

See bug in jsbin

1. Use ImageryClarity basemap.
2. Zoom in a few times.
3. See error in console.

Screenshots

Environment Information

• Version of Leaflet (L.version): 1.6.0
• Version of Esri Leaflet (L.esri.VERSION): 2.4.0
• Your OS: Windows 10
• Browser and Version: Firefox 76, Chrome 81

[gavinr]

Doing a bit of research here:

1. The issue only happens on zoom-in, when zooming into level 14 or higher.
2. The issue does not happen on pan.
3. The issue does not happen when zooming out
4. The issue does not happen when zooming into level < 14

See console here: https://jsbin.com/getalahoki/2/edit?html,output

[jgravois]

Clarity might not have a tilemap #1011

[mickeyjohn]

It is happening the same with me after version 2.2.4. Is this an expected feature or an issue?
Thanks a lot.

[jgravois]

its a bug.

esri-leaflet/src/Layers/BasemapLayer.js

Line 254 in 92b462f

if (this._url.indexOf('World_Imagery') !== -1) {

the call above returns true for both the Imagery and ImageryClarity basemaps, but only the first one actually has a tilemap.

[jwasilgeo]

ImageryFirefly also falls under this. I've got something in the works coming soon.