This is a micro post with a tip that I'll need to remember again in the months to come. Node.js can emit warnings on the terminal saying that a rejected promise wasn't caught, or calling an asynchronous function without callback is deprecated.
But where exactly is the original call that causes that warning?
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Passing the command line argument
--trace-warnings gives me a full stacktrace
to the originating call that triggered the node warning:
Note that even though I'm using mocha (via npx) the noe argument is still correctly passed on to node to give me the stacktrace.
You can even go a little further an include a module like clarify to strip the node internals from the stacktrace which makes it a little easier to read.