Show HN: Meow – The 4th and final JavaScript runtime and toolchain
One binary replaces your runtime, package manager, test runner, linter, formatter and typechecker. Your package.json stays. Your code stays. Everything just runs faster — with tiny paws.
Instead of forcing your runtime, package manager, linter and test runner to parse your codebase independently over and over, meow brings them under a single roof.
Powered by the ultra-fast Oxc parser, we map your code exactly once in memory. That single AST natively feeds the entire toolchain at once.
Packages download to a global cache exactly once, then instantly project into your workspace. Millisecond warm installs and 0 bytes of duplicated disk space.
No need to rewrite imports or fix configs. meow natively boots Next.js 15, Astro and Vite out of the box — seamless CommonJS & Node built-in compatibility.
We don't skip cryptographic supply-chain signatures to win benchmarks. meow runs full SHA-512 verification, offloading heavy hashing to background OS threads so your network never stalls.