CE have released their own take on tracing, with following notable changes compared to original ZIO Tracing:

• Instead of parsing lambdas, CE throws exceptions in IO constructors and cleans up stacktraces. That also means there is no regional control of tracing and AFAIK no way to avoid slight overhead even when tracing is completely disabled – but OTOH it may probably work on Scala.js
• Trace

Currently when we call renderer.render(<App />, node), all of the children of node which Crank doesn’t own are blown away. This means that rendering into document.body will blow away the rest of the document. I would like Crank to work more cooperatively with the existing DOM; maybe we can keep track of the first and last nodes which we have rendered into a node and only render in that range