I got this from the docs
app.on('ready', function(){
devtools = new BrowserWindow()
window = new BrowserWindow({width:800, height:600})
window.loadURL(path.join('file://', __dirname, 'static/index.html'))
window.webContents.setDevToolsWebContents(devtools.webContents)
window.webContents.openDevTools({mode: 'detach'})
})
It opens two windows, on is the dev tools. But it's exactly underneath the main window.
Is there a way to get them side by side (the screen is big enough)?