Electron: Quit macOS app with command + Q

main.js

// Quit app on macOS ONLY if using command + Q or some other force quit option:

win = new BrowserWindow({ width: 500, height: 500 })

let forceQuit = false

// Triggered before close event, i.e. when pressing command + Q
app.on('before-quit', () => {
  forceQuit = true
})

win.on('close', e => {
  if (!forceQuit && process.platform === 'darwin') { // "darwin" is macOS
    e.preventDefault() // Prevents quit
    win.hide()
  }
  
  // Let the app quit normally…
})