ppurang

val scalacOptions ++= Seq(
  "-encoding",
  "utf-8",                         // Specify character encoding used by source files.
  "-deprecation",                  // Emit warning and location for usages of deprecated APIs.
  "-explaintypes",                 // Explain type errors in more detail.
  "-feature",                      // Emit warning and location for usages of features that should be imported explicitly.
  "-language:existentials",        // Existential types (besides wildcard types) can be written and inferred
  "-language:experimental.macros", // Allow macro definition (besides implementation and application)
  "-language:higherKinds",         // Allow higher-kinded types
  "-language:implicitConversions", // Allow definition of implicit functions called views

ppurang

Run with Scala CLI (https://scala-cli.virtuslab.org/):

scala-cli run .

And then go to http://localhost:9991

Happy coding, Scala is great.