process: add --unhandled-rejections flag
This adds a flag to define the default behavior for unhandled
rejections. Three modes exist: none
, warn
and strict
. The first
is going to silence all unhandled rejection warnings. The second
behaves identical to the current default with the excetion that no
deprecation warning will be printed and the last is going to throw
an error for each unhandled rejection, just as regular exceptions do.
It is possible to intercept those with the uncaughtException
hook
as with all other exceptions as well.
This PR has no influence on the existing unhandledRejection
hook.
If that is used, it will continue to function as before.
Supersedes https://github.com/nodejs/node/pull/20097
// CC @nodejs/diagnostics @nodejs/promises-debugging @nodejs/tsc
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines