I wouldn't say "common". If you avoid "DOM thrashing" (where your code repeatedly mutates the DOM and then measures it and then mutates and then measures), the

I wouldn't say "common". If you avoid "DOM thrashing" (where your code repeatedly mutates the DOM and then measures it and then mutates and then measures), the browser is pretty good at batching these computations and the vast majority of projects will never run into this as a problem. And thrashing is something you should solve by improving your JS, not mitigate with this API.