ZIO

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To use Tyrian with ZIO, we need to bring in the tyrian-zio library.

ivy"io.indigoengine::tyrian-zio::x.y.z" // Mill
libraryDependencies += "io.indigoengine" %%% "tyrian-zio" % "x.y.z" // SBT

Then we can bring in the TyrianZIOApp trait to create our application.

@JSExportTopLevel("TyrianApp")
object Main extends TyrianZIOApp[Msg, Model]:

Cmds and Subs then make use of ZIO's Task type to perform side effects.

def update(model: Model): Msg => (Model, Cmd[Task, Msg]) =
  case Msg.Increment => (model + 1, Cmd.None)
  case Msg.Decrement => (model - 1, Cmd.None)
  case Msg.NoOp      => (model, Cmd.None)

def subscriptions(model: Model): Sub[Task, Msg] =
  Sub.None