Bun uses JSC (JavaScriptCore) instead of V8. From what I understand, whereas Node/V8 has a higher tier 4 "top speed", JSC is more optimized for memory and is faster to tier up early/less overhead. Good for serverless. Great for agents -> Anthropic purchase.

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throwaway27448 4 hours ago | parent [-]

> Good for serverless. Great for agents -> Anthropic purchase.

Surely nobody would use javascript for either yea? The weaknesses of the language are amplified in constrained environments: low certainty, high memory pressure, high startup costs.

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leonflexo 4 hours ago | parent | next [-]

I think Bun helps with the memory pressure, granted this is relative to V8. I'd pushback on the certainty with the reality that TS provides a significant drop in entropy while benefiting from what is a sweet spot between massive corpus size and low barrier for typical problem/use-case complexity. You'll never have the fastest product with JS, but you will always have good speed to market and be able to move quickly.

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dtj1123 4 hours ago | parent | prev | next [-]

Claude CLI is based on bun. The dependency is so complete that Bun have now joined Anthropic.

	▲	throwaway27448 4 hours ago \| parent [-]
		Claude CLI is not exactly a reference of usable software

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messe 4 hours ago | parent | prev [-]

> Surely nobody would use javascript for either yea?

It's probably the most popular language for serverless.

	▲	throwaway27448 4 hours ago \| parent \| next [-]
		I can't vouch for this behavior but obviously you can have a better serverless experience than writing lisp with the shittiest syntax invented by man
	▲	pjmlp 4 hours ago \| parent \| prev [-]
		Only because the likes of Vercel and Netlify barely offer anything else on their free tiers. When people go AWS, Azure, GCP,... other languages take the reigns.