Scala3 doesn't work with slinky-hot in some cases

Question

AlexITC opened this issue 2 years ago · 2 comments

It is common to see this piece of code in Slinky projects, unfortunately, this causes problems with Scala3, the website doesn't load at all:

    if (LinkingInfo.developmentMode) {
      hot.initialize()
    }

Answer 1 · 2022-01-18T19:36:01.000Z

@AlexITC do you see any crashes in the console? There shouldn't be anything Scala 3 specific in the hot-reloading implementation.

Answer 2 · 2022-01-18T19:56:53.000Z

I was able to isolate the problem, which occurs when rendering this ErrorBoundaryComponent:

Uncaught org.scalajs.linker.runtime.UndefinedBehaviorError: java.lang.ClassCastException: undefined is not an instance of slinky.readwrite.Reader

If I remove that, hot-reloading works.