[advice] How to use with schema repos, without Java

Hey :)

I'm desperately looking for a gml-to-geojson Javascript converter, and I came here after googling hard.

I found jsonix, and some schemas [here](https://github.com/highsource/ogc-schemas) but I'm struggling..

- Is Java required for gml to geojson ? I found [that](https://github.com/highsource/jsonix/wiki/Using-Jsonix-in-Your-JavaScript-Program) and there is a "Compile mappings using Java section"; but when using ogc-schemas repo, it doesn't seem to be that need. Is there any "prebuilt" stuff that one can use without installing a whole Java stack ?
- Is the "geojson schema" somewhere ?

Thanks :)