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scalasbtscalafmt

How can I run `scalafmt` on a specific file?

I know if I do sbt scalafmt it will run it on the entire project. How can I do this for a specific file?

Solution

  • sbt-scalafmt provides a scalafmtOnly task for this. It's documented at https://scalameta.org/scalafmt/docs/installation.html#task-keys , where we see:

    scalafmtOnly <file>...: Format specified files listed

    You could also, outside of sbt, use the scalafmt command, which is installable via Coursier.

    Scalafmt can be now be launched via scala-cli, so you can also:

    scala-cli format <file>...