Unhandled Promise Rejection in debugger on Node startup

[mwenko]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using?

@sentry/node

SDK Version

8.7.0

Framework Version

8.7.0

Link to Sentry event

No response

SDK Setup

Sentry.init({
            dsn: dsn,
            environment: environmentWithAppInstance,
            debug: true,
            maxValueLength: maxValueLength,
            release: version,
            integrations: [nodeProfilingIntegration()],
            skipOpenTelemetrySetup: true,
            tracesSampler: (context) => {
                if (context.request?.url?.endsWith("/status")) {
                    return 0;
                }

                return defaultTraceSampleRate;
            },
            profilesSampleRate: profilesSampleRate,
            beforeBreadcrumb(breadcrumb, _) {
                if (!shouldAddBreadcrumb(breadcrumb)) {
                    return null;
                }

                return breadcrumb;
            },

            beforeSend(event: ErrorEvent, hint: Sentry.EventHint) {
                if (!shouldSend(hint)) {
                    return null;
                }

                event = removeAuthorizationHeader(event);

                return event;
            },
        });

Steps to Reproduce

1. Run nest start --debug --watch

Node: 20.9.0
NestJS: 10.3.8

Expected Result

The application should start without throwing an unhandled promise rejection.

Actual Result

It throws an unhandled promise rejection (see screenshot):

If I unmark "uncaught exception" in my editor it starts like expected.

[timfish]

This error isn't unhandled as it has a .catch(). You're likely hitting this in the debugger because you have Pause on caught exceptions enabled:

[mwenko]

This error isn't unhandled as it has a .catch(). You're likely hitting this in the debugger because you have Pause on caught exceptions enabled:

Thanks for the quick response.

If you look at the provided screenshot, you'll see that I have Uncaught Exception marked in the breakpoints section. (bottom left corner)

(I noticed that the code has a catch() applied. And it made the issue even weirder to me)

[timfish]

I think you're seeing this:
microsoft/vscode#116783

Which has a linked v8 dev tools issue which is still open:
https://issues.chromium.org/issues/41161875

The argument is that debugger should not break here because the exception is later caught.

Without the debugger attached, this does not result in an unhandled promise rejection.