Initial Connection errors are not handled

[abhay27chauhan]

Is your feature request related to a problem? Please describe.

snippet of you code -

mongoose.connect(dbURI, {useNewUrlParser: true, useCreateIndex: true, useUnifiedTopology: true, autoIndex: true, useFindAndModify:false}); 

mongoose.connection.on('error', function (err) { 
    console.log('DB connection error: ' + err); 
  });

read this pls, the error handling part -
https://mongoosejs.com/docs/connections.html#:~:text=If%20initial%20connection%20fails%2C%20Mongoose,after%20initial%20connection%20was%20established.

you have handle two errors -

if promise is rejected -> using the above code i have proposed
error after initial connection is made -> using the event handlers

Describe the solution you'd like
will use try/catch along with async/await for handling the initial connection error.

[abhay27chauhan]

I am a participant of GSSOC21, so please let me know if this is a valid proposal

[ADRE9]

Go Ahead !