Weird things can happen with event emitters mixed up with promises too. I wrote a short piece with an example: https://qubyte.codes/blog/promises-and-nodejs-ev

Weird things can happen with event emitters mixed up with promises too. I wrote a short piece with an example: https://qubyte.codes/blog/promises-and-nodejs-event-emitters-dont-mix https://qubyte.codes/blog/promises-and-nodejs-event-emitters... (The title is a bit overstated, since it's really about the specific example of unhandled error emissions in a promise chain.) Regardless of the merits or problems of either post, a lesson is to be careful around promises when errors are involved.