The issue is that V8 unhandled rejection logic doesn’t wait until the promise is awaited. If a promise is rejected, has no awaiter (.then/.catch/await), and per

The issue is that V8 unhandled rejection logic doesn’t wait until the promise is awaited. If a promise is rejected, has no awaiter (.then/.catch/await), and persists in this state for some amount of time/event-loops (that the article covers), it will be treated as unhandled. I tested this in Node 18. It treats it as unhandled. The only way to avoid the gotcha’s described in the article is to ensure all promises: - cannot fail, and/or - are immediately awaited (by anything but .catch is the easiest).