Trace warnings by default on dev mode

[pragmaticivan]

It's quite annoying sometimes using async/await native since it doesn't show the stack trace for the async error. I would suggest enabling to show trace warnings by default on development mode.

ref:

• v6.x backport: promise: better stack traces for --trace-warnings nodejs/node#10378
• unhandledRejection Stack Traces are unhelpful nodejs/node#9523

[cirocosta]

hey @pragmaticivan , how does that work? Could you provide a TL;dr?

Thx!

[pragmaticivan]

Hey @cirocosta , it's actually pretty simple.

Usually, you get something like (node:31438) UnhandledPromiseRejectionWarning: Unhandled promise rejection with a unhandled promise/asyncfunction .

The flag --trace-warnings shows the stack trace so you can better find out where is the approximated place to find the bug.

[eduardolundgren]

@pragmaticivan could you try it out and see if it's showing the stack trace? Note that it's also logging the error on the error middleware.