debug-utils

Just some utilities for debugging daily development issues in Scala.

"com.kubukoz" %% "debug-utils" % "1.1.3"

Published for Scala 2.12, 2.13, 3.0.0-RC2 and 3.0.0.

Usage

Note: There's another library that does a better job at this - see macrolizer

withDesugar

Wrapping an expression in withDesugar will print its desugared (scala 3: fully elaborated) form at compile time.

In Scala 2.x, the code will be printed at INFO level.

Due to the changes in Scala 3's metaprogramming, the desugared code is printed as a warning.

import com.kubukoz.DebugUtils

def demo = DebugUtils.withDesugar(
  println(
    implicitly[ValueOf[42]].value
  )
)

// The above shows (in Scala 3.x):
// scala.Predef.println(scala.Predef.implicitly[scala.ValueOf[42]](new scala.ValueOf[42](42)).value)