Bun

Bun bundles a JavaScript runtime, package manager, bundler, and test runner into a single binary written in Zig. It is largely Node-compatible, so most apps drop in without changes, and it is much faster: bun install routinely runs 10x faster than npm, and the runtime starts cold faster than Node. Bun also has first-class TypeScript and JSX support out of the box. It is the runtime of choice for new TypeScript projects that want speed without giving up the npm ecosystem.