what is a great comparison between Bun, Deno, and Node.js?
Why should I choose Bun over Deno or vice versa?
Why should I choose Bun over Deno or vice versa?
Deno has members in Ecma TC39, so they take part in the development and standardization of JS.
Deno brings a new mentality to development focused on simplifying things, whereas Bun aims to be an improved Node.
Deno aligns with web APIs: you can use the same APIs in the browser and in Deno. Many packages work in both platforms. Deno is even in the compatibility tables in MDN.
Deno simplifies DX greatly. It's very easy to work with Deno. Easy to install things and set up a project, easy to deploy, no config files etc.
Deno is written in Rust, which allows them to move faster and more safely. Contributing to and extending Deno is a breeze. You can add Rust crates to the runtime and use them from JS.
I feel like the Bun team has been too pressured by executives and marketing. They announced 1.0 when Bun was clearly not stable enough, giving lots of segfaults. Even their readme had a huge statement right in the beginning saying that Bun was not production ready yet, despite 1.0 being hyped all over the place.
Most of Deno's code is actually V8 in C++
They also kinda have different goals. Bun seeks to be more of a drop-in replacement from Node whereas Deno, being spearheaded by the same person who made Node, seeks to move the industry forward and fix mistakes Deno made. However Deno, out of necessity, has also highly valued backwards compatibility with the Node ecosystem
If they aren't able to evolve Node.js to overcome the mistakes (e.g. because they're technical in nature, or momentum of install base, or they don't have the leadership ability), I am worried that they might repeat the same pattern with Deno, since it isn't possible to NOT make any mistakes.
OTOH, having a clean slate that's learned from mistakes and you can bring a lot of your code along doesn't seem like a major impediment.
Is code written for any of the 3 runtimes generally transferrable? I realize some won't (e.g. Deno has WebGPU support, which is attractive to me), but generally?
You probably meant "node" here.
If you don't, focus on pointless things like Bun vs Node vs Deno, get some dopamine hits and fool yourself into thinking you are being productive.