Node.js API Masterclass with Express and MongoDB - Mongoose Error Handling [2]

The video tutorial covers error handling in Mongoose, focusing on duplicate field and validation errors. It explains how to log errors, detect duplicate field errors using error codes, and handle validation errors by extracting messages. The tutorial also discusses creating custom error responses and introduces middleware for asynchronous calls to simplify error handling.

What is the primary focus of the initial section on error handling in Mongoose?

• Creating new boot camps

• Setting up a database connection

• Logging errors and understanding the error object

• Using third-party packages for error handling

How can you identify a duplicate field error in Mongoose?

• By checking the error name

• By checking the error code

• By checking the error message

• By checking the error stack

What status code is used for a duplicate field error in Mongoose?

• 500

• 200

• 400

• 404

What is the main goal when handling validation errors in Mongoose?

• To log the entire error stack

• To ignore the errors

• To create new error types

• To extract and display error messages for missing fields

Which JavaScript method is used to extract messages from validation errors?

• map

• reduce

• filter

• forEach

What is the benefit of implementing custom error handling without third-party packages?

• It requires more resources

• It reduces dependency on third-party packages

• It makes the code more complex

• It increases dependency on external libraries

What is the purpose of creating middleware for asynchronous calls?

• To simplify error handling by reducing try-catch blocks

• To handle synchronous calls only

• To increase the number of try-catch blocks

• To complicate the error handling process