[rendall]

I wrote an extension that did something similar for Twitter, back when Twitter had "So-and-so liked this" tweet, which was inevitably something awful. It's archived now, because it's no longer relevant. But you might find something useful in the code.

I tried polling, but it was against the Chrome extension guidelines at the time, so I used a "mutationObserver" on page load and then a "scrollListener". I don't remember if I ever tried an "intersectionObserver" but that might be worth looking at.

https://github.com/rendall/twitter-like-hider/blob/master/co...