B 
Bun
A fast JavaScript runtime, bundler, test runner and package manager.
NOT REALLY
why this verdict
Keep it — Anthropic has not replaced it
Anthropic's version overlaps, but does not finish the dev tools job, so this one is still worth keeping open.
- A named launch, not a vibe named, unlinked
- Node.js absorbed many of the features that made Bun attractive. Anthropic, January 1, 2025 — no announcement link recorded yet.
- How much of the job it covers not the job editorial call
- Parts of it. The job still needs the tool to get finished.
- Is there a free way to do it? yes
- 2 of 2 listed replacements have a usable free tier: Node.js and Deno.
- What the call is worth nothing to cancel
- No paid entry tier tracked, so there is no subscription to cancel.
Reason composed from the fields above missing: announcement linked recorded: free replacement listed recorded: two or more escape hatches
- Threatened by
- Anthropic
- Since
- January 1, 2025
- List price
- free
- Per year
- —
The backstory
Bun's argument is that the JavaScript toolchain should be one fast binary rather than six slow ones. Node has been catching up on TypeScript execution and built-in test running, so Bun keeps its lead on raw speed and on being the default in a growing share of new AI-generated project templates.
Escape hatches
N 
Node.js The default, now much faster.
nodejs.org open_in_new D 
Deno Secure-by-default alternative.
deno.com open_in_new2 of 2 replacements have a usable free tier.
