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In the next version of Vitest you can track leaking asynchronous resources via `--detect-async-leaks` option! Available in v4.1.0-beta.4 release. 🔍 (notice missing await in the example)

That is *so* *cool*!! What witchcraft is this?!

My guess would be async_hooks 🤔

Using async_hooks you can hook promise creation and completion. Using this you can track all promises that weren't awaited. You just need to capture a stack trace at creation so you can point out where the missing await was. Capturing a stack trace for every promise has overhead hence the opt-in!