Comment by creata

Looking at Bun's website (the comparison table under "What's different about Bun?") and what people have said here, the only significant benefit of Bun over Node.js seems to be that it's more batteries-included - a bigger standard library, more tools, some convenience features like compiling JSX and stripping TypeScript types on-the-fly, etc.

It's not clear to me why that requires creating a whole new runtime, or why they made the decisions they did, like choosing JSC instead of V8, or using a pre-1.0 language like Zig.