Besides being Linux-only, the GH page lists intentional restrictions like “commonjs modules, no support for ES modules” -- that seems like a biggie!

The benchmarks seem to focus exclusively on startup time, which is certainly important but not the only important thing. (And unless I misread those tweets it’s only a tiny bit ahead of bun.)

More competition is good and helps keep everyone honest, of course, but it looks like extremely early days for this project.