This is an example of how to use Scala.js together with Electron to build native applications.
Get started, enter the scalajs subfolder, start sbt and launch the fastOptJS task
cd scalajs
sbt
sbt> ~electronMainThen you will need to get Electron downloaded on your machine.
Once you do, call the Electron executable with the electron-app subfolder as a argument:
/your/path/to/Electron electron-app
# e.g. on my MacOS machine
~/development/tools/electron-v0.29.1-darwin-x64/Electron.app/Contents/MacOS/Electron electron-app/You should see a new window opening with the following text:
Hello World!
We are using io.js v2.3.1 and Electron 0.29.1.
Hello World from Scala.js
Sbt task electronMain aggregates the content of fastOptJS and of the launcher to form the main.js file that will be provided to Electron's main process. This is why the repo does not contain a main.js under the electron-app folder (unlike electron's quick start example): it is generated from the Scala.js code.
Electron's main process is implemented by com.example.electronapp.Main.scala. It extends js.App and that's what the generated Scala.js launcher launches. You should not extend js.App elsewhere in your code or that will generate a conflict: instead use JSExport.
If for some reason, you don't want the main.js to come from Scala.js, see the simple-main-js branch where the main file is exactly the one from Electron's quick start example, written in pure javascript.
The javascript code loaded from within the rendered process (i.e. index.html) is implemented in com.example.electronapp.Renderer.scala and uses the JSExport annotation to be callable from javascript and its main method is explicitly called from within index.html.