Google Apps Script has made the switch to Chrome V8 JavaScript Engine. You can now write your Google Scripts and GSuite addons directly in ES6 but with a few caveats.
In this video tutorial, you’ll learn how to develop Google Apps Script projects locally on your computer inside Visual Studio Code. You can write your code in modern JavaScript, neatly organized in modules, and the build environment will use Babel and Webpack to transform your code into a version of JavaScript that is compatible with Apps Script.
Amit Agarwal has a great tutorial and boilerplate code for developers interested in locally Google Apps Script development.
