I checked SO and there isnt much about HTMLRewriter. Since it was developed by cloudflare and is built into workers I assumed this would be a better spot to ask - if Iām wrong let me know and i can post a new question on SO
That is correct, but your question is still related to standard JavaScript development and here @sdaymanās suggestion is spot on, as the forum is not intended for generic development questions. Everything that is libary specific is at https://developers.cloudflare.com/workers/runtime-apis/html-rewriter