Bun 1.4 Rust rewrite is not looking good
A developer expresses frustration with the Bun JavaScript runtime project, citing a lack of stable releases and a shift toward AI-driven development. The critique highlights concerns over broken promises and an overwhelming number of open pull requests.
Why it matters
This reflects growing developer skepticism regarding the integration of AI into core software infrastructure and the sustainability of rapid-growth open-source projects.
I care about Bun. I have been rooting for it since the initial release in 2022. I switched all my development from Node to Bun. I used it in the development of the Nue framework and now with my new project Hertta .
The last three months have not looked good for Bun. It started as one of the most impressive individual engineering projects I have seen, but has now turned into this weird AI-powered creature with continuous false promises and an increasingly frustrated community.
In the next version of Bun used to be a positive tweet to watch for. For years it meant a feature had been implemented, tested, and would ship in a few days. This changed after the Rust rewrite. Now the posts are false promises about the upcoming release:
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