In our "Complete Guide to Test Chrome Extensions with Puppeteer", we've covered all you need to know to get you up to speed on setting up end-to-end testing for a chrome extension. The fact is that many elements of the article can be brought to traditional front-end applications.
To truly deliver to you the complete knowledge we've acquired, we've decided to write this tiny, complementary blog post, where we'll cover ad-hoc topics, let's call it tips & tricks, to help you work with Puppeteer.