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The Evolution of Bun: A Powerful Toolkit for JavaScript Development

Tomas Svojanovsky
4 min readJan 26, 2025

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Get ready for a major shift in your development experience. Bun, the innovative JavaScript runtime written in Zig, has been making waves for its promise to streamline the development process while delivering exceptional performance. With the release of Bun 1.2, the platform takes another big leap forward, introducing new features and APIs that promise to redefine how we build, run, and test JavaScript and TypeScript applications.

Zig in Production: A Testimony to Efficiency

Bun’s foundation in Zig highlights the growing adoption of this system programming language in production environments. The choice of Zig isn’t just novel — it’s strategic. Zig’s low-level control and performance characteristics make it an ideal choice for crafting a fast, efficient runtime like Bun. This further reinforces the notion that Zig isn’t just experimental but is here to stay as a production-grade language.

The Node.js Compatibility Push

A critical aspect of Bun is its compatibility with Node.js. Bun positions itself as a drop-in replacement for Node.js, supporting major Node APIs like fs, net, and http. With Bun 1.2, the runtime now extends its support to APIs like dgram

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Tomas Svojanovsky
Tomas Svojanovsky

Written by Tomas Svojanovsky

I'm a full-stack developer. Programming isn't just my job but also my hobby. I like developing seamless user experiences and working on server-side complexities

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