Please support the RFC 7946 (published in August 2016) as it is the new standard specification of the GeoJSON format.
RFC 7946 the new standard specification of the GeoJSON format
FME Form
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
There are four parts to that spec that we can update:
As far as I know, polygon orientation and mime type were updated in 2017.0.
The coordinate system is updated for 2017.1 - a new 'Reproject to WGS84' parameter was added to the writer. It defaults to 'yes' meaning new workspaces will automatically produce this coordinate system, while old workspaces will behave as they always did (for backwards compatibility).
[nb: if you have an old workspace, but want to comply to the new spec's coordinate system, then simply reproject to LL84 in a transformer. Then it will write the data in LL84 but with no coordsys definition - meeting the new spec]
So, geometry splitting seems to be the only remaining item to do. For reference, it is PR#72160
Currently there is a problem with the GeoJSON writer when writing multiple feature types. The workaround for now is to use one feature type per dataset, or use dataset fanout. A more comprehensive solution is planned for 2018.1. For more info see: https://knowledge.safe.com/articles/40806/workarounds-to-known-issues-in-fme-20170.html