That's most of the JS on the page. That being said, the page transfers ~500Kb, and loads into memory ~30Mb, which shouldn't be that substantial. Most of it lies in the asciinema player (which should be mostly JITing), or an array.
Is that the asciinema player, or the "video" it plays? Either way: I thought part of the point of asciinema was that it compresses better for terminal capture? Just how much data was stored by that particular session?
Hard to tell, just shows up as 'JIT' in the profiler.
> I thought part of the point of asciinema was that it compresses better for terminal capture?
Better than what? 30Mb of heap for a video source/player combination isn't that awful. It's on-par with most videos that your web browser will try to play.