[yatsyk]

There are few similar libraries. I think most feature reach is https://github.com/projectstorm/react-diagrams , but there is also https://github.com/DrummerHead/react-flow-diagram https://github.com/alibaba/GGEditor , actually I’ve found about 15 different js open source react and non-react editors for node-based UI. But unfortunately most of them is not very extensible. One of the reason is that the authors prefer to store state inside component, so it’s impossible to create non-trivial behaviour.

[moklick]

That's why we tried to make this library as simple as possible. It doesn't do any state updates besides the positions. You can easily store state inside nodes and change it as seen in the custom node example https://react-flow.netlify.app/custom-node

[amelius]

One thing that seems to be missing though is slot names.

For example if the nodes are objects in C++ and the edges are relations, you want to know the names of the members that point to the other nodes.

Labels on the edges would also be nice.

[ldd]

What sort of non-trivial behaviour would you be interested in?

[yatsyk]

For example: can I connect one port of node to other port of node and how this connection needs to be drawn.