Connection Limit

This example shows how to implement a custom handle that can limit the number of connections it can have. It works in tandem with the existing isConnectable prop so you can always completely disable a handle if you need to. All you need to do is provide a maxConnections prop to the handle. If you leave it out, it'll assume there's no limit.

To see it in action, try and connect Node 1 to the middle target node or Node 2 to the first target node. You'll see that it doesn't work! Try connecting both nodes to the bottom target node that has no connection limit, and everything will behave as normal.

If you're feeling fancy you could extend this example to let maxConnections be a function can calculates that maximum dynamically, but we'll leave that down to you!