$ cat fib.ts
function fib(n: number): number {
  return n < 2 ? n : fib(n - 1) + fib(n - 2);
}
console.log(fib(30));

$ scriptc run fib.ts
832040

$ scriptc build fib.ts -o fib >/dev/null && ./fib
832040

scriptc compiles the same TypeScript you run on Node.js, type-checked by the TypeScript compiler. npm packages your program imports compile along with it. Code scriptc can't compile fails the build with an error code and, where available, a rewrite hint.

scriptc is experimental. See the limitations and the Node.js compatibility reference.

Install

$ npm install -g scriptc

npm installs the native compiler for your platform (macOS, Linux, or Windows). Node.js 24 or later is needed to install it and to run WASI modules with scriptc run; compiling and running executables doesn't need Node.js.

Building executables needs a linker and the platform SDK or sysroot, such as the Xcode Command Line Tools on macOS. Set SCRIPTC_LINKER to choose the linker driver. --emit=ir|llvm|asm|obj needs no external tools. See the quickstart for details.

Commands

scriptc build <file.ts>: compile to a native executable or another artifact selected with --emit.
scriptc run <file.ts>: compile and run.
scriptc coverage <file.ts>: report what compiles, and explain what doesn't.
scriptc build --lib --profile <profile.json>: compile a static library, or a Wasm reactor on wasm32-wasi.

See the CLI reference for every option.

Cross-compilation and WebAssembly

Set SCRIPTC_TARGET to build for another platform, for example SCRIPTC_TARGET=aarch64-linux-gnu.2.36 or SCRIPTC_TARGET=wasm32-wasi. Install the matching @scriptc/runtime-<target> package in your project, at the same version as scriptc --version, or set SCRIPTC_RUNTIME_PACK to a runtime pack directory. See platform support and WebAssembly modules.

Native code

Call C functions by declaring their signatures in TypeScript and binding them to C symbols in a manifest passed with --ffi <manifest.json>. See the Native FFI guide.

Build cache

Builds reuse a bounded persistent cache. Set SCRIPTC_NO_CACHE=1 to bypass it or SCRIPTC_CACHE_DIR to choose its location.

Docs: scriptc.dev