“Zig’s low-level control over memory and lack of hidden control flow makes it much simpler to write fast software,” say the Bun team. Sumner told Hacker News that “I started Bun a little over a year ago … On Linux, it installs dependencies for a simple Next.js app about 20x faster than any other npm client available today.”
Most observers so far agree that Bun merits attention for performance alone, and that npm module compatibility is a huge advantage. That said, Zig lacks the built-in memory safety of Rust, used by Deno. Bun is in its early stages and whether the project will achieve the momentum it needs to thrive is an open question, though for sure it is one to watch and will be influential if nothing else.