pxt-calliope/clients/electron/main.js

const electron = require('electron')
// Module to control application life.
const app = electron.app
// Module to create native browser window.
const BrowserWindow = electron.BrowserWindow
// pxt toolchain
const pxt = require('pxt-core')

// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow

function createWindow() {
  console.log('starting app...')
  // Create the browser window.
  mainWindow = new BrowserWindow({
    width: 800, height: 600,
    webPreferences: {
      nodeIntegration: false,
    }
  })

  ts.pxt.Util.debug = true;
  pxt.mainCli("C:/gh/pxt-microbit/clients/electron/node_modules/pxt-microbit", ["serve", "-just"]);
  
  // no menu
  mainWindow.setMenu(null);

  // and load the index.html of the app.
  mainWindow.loadURL(`http://localhost:3232/#local_token=08ba9b8f-6ccb-4202-296d-28fac7a553d9`)

  // Open the DevTools.
  mainWindow.webContents.openDevTools()

  // Emitted when the window is closed.
  mainWindow.on('closed', function () {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    mainWindow = null
  })
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on('ready', createWindow)

// Quit when all windows are closed.
app.on('window-all-closed', function () {
  // On OS X it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== 'darwin') {
    app.quit()
  }
})

app.on('activate', function () {
  // On OS X it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (mainWindow === null) {
    createWindow()
  }
})

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.