alt Hacker NewsI imagine some of Bun's growth is just simply V8 fatigue. JavaScriptCore does have some different runtime characteristics and it is nice to a diversity in language engines.
(It seems too bad ChakraCore is mostly out to pasture and not keeping up with TC-39 and that there's still no good Node-compatible wrapper for SpiderMonkey, but having one for JavaScriptCore is still a breath of fresh air.)
I'm very confident that users of these runtimes do not care about the underlying Js engine powering them. Bun succeeded because it was compatible with node and required much less configuration to get a standard typescript and react app running.