Offline map with mapbox and leaflet in ionic

I’m using mapbox map with leaflet (v1.03) in ionic(v3) app. I need to have option for app users to download some map region for offline use.

For now I found this resources, but it doesn’t help me enough to do it:

Did anybody manage to do this or maybe have some good resource on how to do it.


Did you find any solution?

Some news about the solution ?