miniboxing/miniboxing-plugin   0.4-M8

Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project:

gaeljw/typetrees   0.5.0

This library is intended to solve the use case of getting the erased types of a (generic) parameter. Something which was possible in Scala 2 with TypeTag and is now a bit more complex with Scala 3.

lowmelvin/hammer-scala   0.2.0

Convert your case classes automatically