For https://cartes.app, we’re taking the Typescript approache.

Any style langage will always be more limited and more costly to implement than just writing JS or TS that outputs a style.

E.g. building a dark version of the style without duplicating most things is hard.

In the long run, we expect this TS script to be quite complex.

TS lets us modularise layers too, for instance elevation layers across different styles.

See https://github.com/cartesapp/cartes/blob/master/app/styles/france.ts

The style list is also starting to be quite complex. See the integration of IGN’s new styles as “sub styles” in https://github.com/cartesapp/cartes/pull/928/files

Hi, that’s interesting ! There is no navigation mode on cartes.app but once I have time for this I might look at your code to see if it can be integrated :)

Hi, we’re developping a Web alternative to Google / Apple maps based exclusively using open source software and data.

To avoid getting lost in this ambition, it’s being developped first on a French region (Brittany), then France itself. We believe 67 millions of people is not too small for a first use case, and is a sweet spot for going fast ignoring international complexities, including translation (of UI, of place names).

Also, the app’s travel routes capabilites will focus exclusively on ecological travel. Car routing is heavy in dev time. Bike, train and bus travel, and a mix of all of these, do not require a live 3D navigation mode. A focus on car rental will also be prioritized.

It won’t replace CityMapper for metropolitan transit. It won’t replace Waze for car trips. Nor OrganicMaps for the very useful offline Android usage.

MP if interested :)