Appendix

Frequently Asked Questions

This is a list of Frequently Asked Questions about tsgen.

… Is there a standalone version available?

tsgen is a kind of compiler plugin, therefore you need javac to generate TypeScript.

… Option[T] should be converted to an optional type?

TypeScript [TS] adds an | undefined to optional types if --strictNullChecks is enabled. So the following setting should to the same:

@TSModule(
     moduleName = "myModule",
     customTypeMappings = {
        "java.util.Optional[T] -> `T` | undefined"
        }
)

But be sure, that your JSON serializer does the same.