Maximal rendering and editing performance, without need for complex application logic (such as splitting data into subgroups etc).
Target performance: Editing at 60fps (e.g. dragging sub objects) in GeoJSON payloads with 100K features (points, lines or polygons).
Handles GeoJSON corner cases, e.g. automatically changing object types from Polygon to MultiPolygon when addition polygons are added.
Fully 3D enabled (Can e.g. use WebGL z-buffer so that lines being rendered are properly occluded by other geometry).
Seamless integration with deck.gl and all geospatial deck.gl layers, allowing for GeoJSON editing to be interleaved with rich 3D visualizations.
Handle all aspects of event handling, including touch screen support.

Why nebula.gl?

You should strongly consider nebula.gl:

You want a full-featured, ultra-high-performance editing solution for GeoJson.
You are already using e.g. deck.gl or react-map-gl.

You may want to look at alternatives if:

If you have very simple editing requirements (just a simple polygon etc)
If you don't want to use deck.gl in your project.

If nebula.gl is more than what you need (e.g. in terms of bundle size), and you may want to look at other solutions, e.g. the simple polygon editor overlay being developed in react-map-gl.

That said, if you are already using deck.gl the additional overhead of nebula.gl is small, and the seamless integration with deck.gl should be valuable.

Quick Overview of the nebula.gl API

EditableGeoJsonLayer

EditableGeoJsonLayer is implemented as a deck.gl layer. It provides the ability to view and edit multiple types of geometry formatted as GeoJSON (an open standard format for geometry) including polygons, lines, and points.

Callbacks

When there is the ability to edit, callbacks are provided to inform you of edits.

Overlays

The overlay layers are based on HTML and rendered by the browser. You can use them for complicated objects that follow map points. They are less performant but more flexible. For more details see Using Html Overlays