The iOS and macOS implementation of in_app_purchase.
This package has been endorsed, meaning that you only need to add in_app_purchase as a dependency in your pubspec.yaml. This package will be automatically included in your app when you do, so you do not need to add it to your pubspec.yaml.
However, if you import this package to use any of its APIs directly, you should add it to your pubspec.yaml as usual.