Bun v0.5.2 added experimental support for the WebAssembly System Interface (WASI). This means you can run WebAssembly binaries in Bun. To run a WASI binary, use bun run: bun run ./my-wasm-app.wasm # you can omit "run" if the filename ends with .wasm bun ./my-wasm-app.wasm WASI...