Unhandled promise rejections during MongooseModule initialization

[ukito-pl]

Did you read the migration guide?

• I have read the whole migration guide

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Potential Commit/PR that introduced the regression

No response

Versions

8.0.1 -> 9.0.0

Describe the regression

Hi,
I recently upgraded @nestjs/mongoose to 9.0.0 and mongoose to 6.0.9.

Since then mongoose errors are not being caught. If there is any exception being thrown during establishing connection it results in unhandled promise rejection. In the snippet below I set retryAttempts to 10, but there is unhandled promise rejection after 1st failed connection attempt and there are no further attempts.

Minimum reproduction code

@Module({
  imports: [
    MongooseModule.forRoot(
      'mongodb://user:pass@localhost:27020/main?authSource=admin',
      { retryAttempts: 10 },
    ),
  ],
  controllers: [AppController],
  providers: [AppService],
})
export class AppModule {}

Here is full reproduction repository: https://github.com/ukito-pl/nest-mongoose-bug

Expected behavior

I expect that in case of connection error Mongoose will retry connection according to 'retryAttempts' option and will not cause unhandled promise rejections.

Other

No response

[kamilmysliwiec]

Please provide a minimum reproduction repository as a Github repository.

[ukito-pl]

Here is github repo: https://github.com/ukito-pl/nest-mongoose-bug

[gsaint]

Having the same issue here!

[jordanberry]

Experiencing the same, happy to help triage - appreciate the great framework 👍