This will add a new field formatter as map in a geofield field, using the mapbox services.

The module https://www.drupal.org/project/mapbox_gl is mandatory.
After enabled you can choose the formatter of a geofield as a "mapbox gl" , in manage display of any
entity that has a geofield field.

To make it work you have to obtain an api key from mapbox. And then choose the representation
of the point: