I interview for front-end at a big company (actually a different title, but effectively front-end engineers) and we explicitly do not ask trivia questions, which is what this guide focuses on. I might ask warm-up questions like "a customer says they click a button on the page and nothing happens, how do you investigate?" and that's it. The entire rest of the interview (1hr) is spent on a coding problem where we both walk through and discuss solutions, and I let them code and we talk about their code.

I truly believe that experienced engineers can learn 1000x more about someone's skillset in the first 5 minutes of them coding than any amount of trivia questions.

it's more that obsolete concepts like var, AMD and Common.js are focused on.

These techniques are obsolete & lead to fragile code especially when blended with newer concepts like native js imports, let and const.