I think it's interesting to observe the development speed of Bun vs Deno when comparing Zig and Rust.

Bun is written in Zig and links to the WebKit's JavaScriptCore.

Deno is written in Rust and links to V8.

It seems to me that the development of Bun is significantly faster than Deno, how much of that is down to the easy of interoperability of Zig and C/C++ vs some of the hoops you have to jump though when using Rust with a C/C++ lib?

(I may be wrong on this an the Bun team are just exceptionally quick)