Dart/Flutter: build_value vs json_serializable

Question

Wondering what is the different between the dart libraries build_value vs json_serializable ?

both appears to be doing the same thing.

Answer 1

Docs mentions:

The json_serializable package allows you to make regular classes serializable by using annotations, whereas the built_value package provides a higher-level way of defining immutable value classes that can also be serialized to JSON.