gpx() and kml() types aren't symmetric

[jaybo]

gpx

gpx(node: Document): FeatureCollection<Geometry, GeoJsonProperties>

kml

kml(node: Document): FeatureCollection<Geometry | null, GeoJsonProperties>  // note the null

Which means I need to write 2 more lines of code. Trivial, YES! (But it did break my build).

[tmcw]

These types are correct. KML features can lack geometries but have data. Features with null geometries are valid in KML and GeoJSON, but not something that GPX can contain.

[tmcw]

Closing - this is a bit annoying, but there's no way for the two have the same type signatures - you can expand the type for gpx to that of kml if you need a single function handle both.