Comment by pimeys

Also badly documented. If you try to implement something non-standard with it, good luck. I once needed to write code where trace started in node an continued inside a node api native library. Getting these two traces to connect must be one of the most frustrating things I've worked on.

At least on the Rust side you have types to help you out, but it is still quite complex and the crates have bugs open for years, impossible to solve with the current architecture.