Cloudflare has acquired Deno, the open-source JavaScript and TypeScript runtime created by Node.js founder Ryan Dahl.
The Deno team is joining Cloudflare to work on Workers and related technologies.
The original team will continue monthly releases with bug fixes and security updates until October 2027, then stop developing the core tool.
Deno will remain open source, but community-led continuation is uncertain.
Deno Deploy is expected to close around April 2027.
Until then, the team will release monthly versions with bug fixes and security updates. Deno, a tool for running JavaScript and TypeScript programs, will remain an open source project. Other developers will be able to continue its development, but it is not known whether the community will actually take over.
The acquisition also changes the future of Deno Deploy, Deno's application hosting service. It will continue to operate for another six months and is expected to shut down around April 2027. Cloudflare will help customers who pay for the service migrate their applications to Workers.
JSR, a place where developers publish and find ready-made pieces of code for JavaScript and TypeScript, will continue to operate. Its infrastructure, that is, the systems it needs to operate, will be transferred to Cloudflare.
The team also committed to continuing maintenance of rusty_v8 and plans to integrate it into workerd, the core program behind Workers.
Another project that Cloudflare is interested in is celld, which was created by Ryan Dahl to simplify the operation of applications that run on multiple computers. It is based on the way Workers work and Durable Objects, which combine an application's code with stored data.
Cloudflare plans to combine the development of celld and workerd. The effort will be led by Dahl and Deno co-founder Bert Belder. The company also wants to formally enable organizations to run Workers and Durable Objects on systems they manage themselves, without relying solely on Cloudflare’s network. Cloudflare says it will make further announcements about this effort in the coming months.
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