Just released Spatial-K 0.2.0, a multiplatform library for GeoJSON and Turf operations Major changes in this version: • cleaned up GeoJSON serialization API • simplified DSL builders for geometry and feature objects • big performance improvements on serialization https://github.com/dellisd/spatial-k/releases/tag/0.2.0

Last year we've added a support of geojson in plotly.kt: https://github.com/mipt-npm/plotly.kt/blob/dev/plotlykt-geo/src/commonMain/kotlin/space/kscience/plotly/models/geo/json/GeoJson.kt. maybe you would be interested in integration?

That could be great, what kind of integration did you have in mind?

Not sure. But it should allow to visualize your geometries right away or even during the development process (though it is much harder). It seems that geojson is available only in dev version. I will try to bring it to release as soon as possible.