It seems that you copied the text and code snippet examples from my ES2020 article pretty heavily... Especially around the nullish coalescing and dynamic imports features.

I don't mind sharing, but what you've done is called plagiarism. At least put a reference to the article in your "Resources" section.

https://levelup.gitconnected.com/i-built-an-app-that-uses-all-7-new-features-in-javascript-es2020-647205024984