Error on "properties":null where "properties":{} is expected

[sebastiaan6907]

Hi Matthew,

I use the following command:
npx mapshaper-xl 24gb perceelgrenzen.geojson -simplify 51% -filter-islands remove-empty -drop fields=id -o precision=0.00001 geojson-type=FeatureCollection perceelgrenzen_simpel.geojson

By using the -drop fields=id I achieve to eliminate all properties for each feature in order to minimise the file size.
Mapshaper formats this situation with:
"properties":null
Where some services, like Mapbox, expect:
"properties":{}

Are you able to change mapshaper's notation when there are no properties?
Manually editing the simplified 3Gb file is a bit cumbersome.

Regards.

[mbloch]

"properties": null is valid GeoJSON, and mapshaper will continue to use this as the default for features with no data properties. I'm open to adding an option to the -o command to use {} instead of null. We'll need a good name for that option, do you have any suggestions?

[sebastiaan6907]

-o format brace or -o format curly brace, would be a clear description I would say. And thanks for the quick fix!!