Pare documentation

Pare turns TypeScript into JavaScript by erasing the types. That is all it does. It is written in C#, ships as one native binary, and needs no Node, no npm and no source maps.

Here is a file before and after:

function add(a: number, b: number): number {
  return a + b;
}

function add(a        , b        )         {
  return a + b;
}

The types became spaces. Every other character is still on the same line and column it started on. When the browser says app.js:2:10, that is app.ts:2:10.

Who it is for

• ASP.NET Core developers who want to write TypeScript in wwwroot without installing Node. Add one package and dotnet build does the rest.
• Anyone with a static site who wants a single binary that turns src/*.ts into js/*.js.
• Tool authors who want to strip types from C#, or from Rust, Go, Python and others through a C library.

Who it is not for

Pare does not type check, bundle, minify or compile JSX. If you need those, use tsc, esbuild or Vite. Pare also refuses TypeScript that needs generated code, such as enum. It tells you what to write instead. See What Pare does not do.

Where to go next