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The runtime wars are over... and Node won

Cloudflare has acquired Deno, the company behind the JavaScript runtime created by Ryan Dahl, the creator of Node.js. Dahl, who spent years trying to replace Node with Deno, now says reimplementing Node was a mistake. Deno's Cell D, an open-source implementation of Cloudflare's durable objects, will be merged into Cloudflare's Workers runtime so anyone can run Workers and durable objects on their own servers. Cloudflare will only ship bug fixes and security patches for Deno for the next year before stopping development, giving Deno Deploy users about 6 months to migrate. The focus will be on AI agents. With Anthropic acquiring Bun and Cloudflare having bought V in June, Node is now the only major JavaScript runtime not owned by a cloud company.
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Each tool opens in the Heidelberg AI Curriculum: what it does, what it costs, how to start.



