It truly is a wrapper around geojson utils.
Include, create, use
I ended up doing this for a few reasons: I wanted to try out the awesome geoJson creation and editing tool by @tmcw, geojson.io. And I also wanted to play with the new Boostrap 3 flatness, a significant departure from the old version in both workings and looks.
The new developers.arcgis.com allowed me to quickly create and publish a new feature service to contain the new data. I just copied the output from geojson.io, pasted it into a text box, hit the button and I had arcJson. Another copy and paste to get it into the feature service rest endpoint, addFeatures and I had my regions in my map service.
A note that if you need the same workflow you need to ‘unwrap’ the output arcjson into just the array of features i.e. remove the outter ‘features’ object before pasting into an addFeatures end point. Peel off this bit here and the very last curly too:
Definitely ‘innovation time’ as this is just a bridge across the open water until esri provides full support for geojson. Let me know if you find it useful.