Mobilizon location

Hey, I want to use the mobilizon API to generate rss feed for myself, as I was looking into it I got stuck on one thing. How, from the original GET lat=47.8707&lon=-3.554068 it generate a POST (json) request "location":"gbt2r4s50" ; how was it translated ? (not a major issue, but if I want to automate things for other’s use, I’d need to know)

I’m totally going blind in this but this seem promising from the Mobilizon’s source.

./src/views/Settings/PreferencesView.vue:      const geohash = ngeohash.encode(lat, lon, 6);

Yay found a php implementation under a MIT licence, neat o/