What Is Bun.js?
Deno is an executable built with Rust that aims to tackle all Node’s flaws such as security, performance, and native TypeScript support. It is significantly faster and more secure than Node, and it comes with tools absent in Node.js.
However, Deno hasn’t gained the massive adoption expected even after four years of release, seeing that most modern systems already are Node-based and change can be a pain for developers. Having to rewrite most npm packages for Deno support also challenges its adoption.
How Does Bun.js Compare to Node.js and Deno.js?
Node.js was written in C++, Deno in Rust, and Bun in Zig. “The low-level control over memory and lack of hidden control flow in Zig make it easier to write fast software” states Bun’s website.
Bun has npm (Node package manager) built-in which makes package installation from npm easy and fast (20x the speed in Node), it also supports TypeScript and auto-transpiles TS and JSX files. Other exciting features of Bun include an inbuilt SQLite3 client, web APIs like fetch and WebSocket, environment variables autoloading, and a test runner.
Of all three, Bun takes the cake for performance. Node remains the most stable one with a very large community, while Deno is currently the most secure one.
Will Bun.js Really Impact the Ecosystem?
Furthermore, Bun’s Discord server already has over 2000 members which proves the excitement in the community for this new technology.
What Is the Future of Node.js, Deno.js, and Bun.js?
Node is still regularly updated, version 18.0 just released recently, therefore its future remains intact even with Deno and Bun around. Many companies like PayPal use Node in their infrastructures, and even new startups are following suit.
Bun.js is still unstable and has limited support (you need Windows Subsystem for Linux to run it on Windows). Although it has so many capabilities, It can’t be an option for production-ready software now as there is still a lot of work to do on it.
While the future is definitely promising for Bun, it is logical to believe that these three technologies will most likely end up co-existing in the ecosystem, not one replacing the other.
Bun.js Might Be a Game Changer