Electron Fiddle Gist

index.html

<!-- Empty -->

main.js

// Modules to control application life and create native browser window
const {app, BrowserWindow} = require('electron')

console.log('before app ready', BrowserWindow.addDevToolsExtension);

app.on('ready', () => {
  console.log('in app ready handler', BrowserWindow.addDevToolsExtension);
  setImmediate(() => console.log('setImmediate() callback', BrowserWindow.addDevToolsExtension));
  app.quit()
});

renderer.js

// Empty