ApiEndpoints VS AutoMapper

I personally prefer the API Endponts project that doesn’t get the love it deserves. It’s really the best of both worlds. It breaks each endpoint up into one file to make it easier to manage and prevents ginormous Controllers.

I personally think it feels "cleaner" when using the controllers instead because they provide more out of the box features. Having one endpoint per file is a nice thing so I'm thinking about using the ApiEndpoints ( https://github.com/ardalis/ApiEndpoints ) package.

You can follow a "controller per endpoint" strategy. One good way to do it is with Steve Smith ApiEndpoints: https://github.com/ardalis/ApiEndpoints

I'm not disputing the benefits of thin controllers but there are other ways to make the controllers thinner. For example, I could use libraries such as ApiEndpoints which allows me to have one handler class per REST endpoint. Basically, MediatR pattern but at the ASP.net level.

The only think I would suggest is to break endpoints into separate files via smth like this https://github.com/ardalis/ApiEndpoints

You really should compare against https://github.com/ardalis/ApiEndpoints

AutoMapper

The 13.0 Upgrade Guide page was created back in April, but there is no sign of the release yet.

The most well-know is probably AutoMapper, but it's not universally liked.

AutoMapper - well for automapping

When working with AutoMapper, we often bump into runtime errors due to invalid mapping configuration, such as this one:

What problems will resolve automapper?

If you are a fan of data mappers, you might want to enhance the implementation with additional extension methods. Here is an example for AutoMapper.

I'm wondering myself. Most mappers like https://automapper.org/ will make a best effort mapper automatically via introspection. If this is just a DSL/annotation suite that requires explicit, complete mapping implementations then this strikes me as a re-implementation of parts of kotlin in kotlin.