Our Jakarta EE reference implementations like Weld and Hibernate Validator have jboss-logmanager dependencies that have a conflict if the logmanager is configured to use the JsonFormatter since the Jakarta EE 9 version has changed the package to jakarta.json.* from javax.json.*.

The core module does have a dependency on json for testing of the JsonFormatter.

There are currently 2.0.0-RC2 versions of the jakarta.json:jakarta.json-api and org.glassfish:jakarta.json-api depednencies that support the jakarta.json.* packages. I'm not sure what branch/version numbering scheme would be wanted for this update, but I can create the PR for this once that is decided.

Technically both javax and jakarta based versions could be used if a new version of the JsonFormatter was introduced under a new name, say JsonJkFormatter.