Congrats to Jarred! Bun has blown me away in terms of performance. Often (in other projects) performance claims out of nowhere are simply cherry-picked but I’ve found bun repeatedly impressing me with both speed and elegance.
What doesn’t get mentioned enough is just how friggin ergonomic bun is. Install it and you’ll see what I mean immediately. Play with any API in the “bun:” namespace and it’s just a breath of fresh air.
I'm curious about where all that performance comes from
I know it uses the WebKit JS runtime instead of V8, which is super interesting. Does that cause a performance lift? Or is there some other secret sauce that pervades throughout Bun? Or is it just a matter of Jarred giving lots of attention to spot-optimizing the most important bottlenecks outside of the core runtime?
I suspect it’s the latter. I would guess V8 with a thin wrapper and a ton of effort from someone who cares about perf to port all the native goodies of node would get similar wins.