What is Bun.js?
Deno is an executable built in Rust that aims to address all Node’s flaws, including security, performance, and native TypeScript support. It comes with tools that Node.js doesn’t have and is much faster and more secure than Node.js.
However, four years after its release, Deno still hasn’t seen the massive adoption it hoped for. Most modern systems are already node-based and changes can be painful for developers. Having to rewrite most npm packages to support Deno also makes it harder to adopt.
How does Bun.js compare to Node.js and Deno.js?
Node.js was built with C++, Deno with Rust, and Bun with Zig. Bun’s website states, “The low-level control over memory and the lack of Zig’s hidden control flow make it easier to write fast software.”
Bun has npm (node package manager) built-in, which makes installing packages from npm easy and fast (20x faster than Node), and also supports TypeScript and auto-transpiling TS and JSX files . Other exciting features of Bun include a built-in SQLite3 client, web APIs such as fetch and WebSockets, automatic loading of environment variables, test runners, and more.
Of all three, Bun takes the cake for performance, Node is still the most stable with a very large community, and Deno is currently the most secure.
Will Bun.js really impact the ecosystem?
Additionally, Bun’s Discord server already has over 2000 members, proving the community’s excitement about this new technology.
What is the future of Node.js, Deno.js and Bun.js?
Node is still being updated regularly and just recently released version 18.0, so having Deno and Bun around doesn’t hurt its future. Many companies like PayPal use his Node in their infrastructure and even new startups are following suit.
Bun.js is still unstable and has limited support (requires Windows Subsystem for Linux to run on Windows). It has a lot of features, but it still needs a lot of work, so it’s not an option for production ready software right now.
Bun’s future is certainly bright, but it’s logical to think that these three technologies will likely co-exist within the ecosystem, rather than one replacing the other.
Bun.js could be a game changer