# kdts

TypeScript has a powerful type system. In most build pipelines today, the type information is stripped completely and very early---often as the first step. Optimizers won't even see the type information. However the type annotations should be helpful in not only in catching error while authoring the code but also in generating efficient JavaScript.

```typescript
const HOST_URL = "https://example.com" satisfies Overridable;

export default {
  fetch() { return Response.redirect(HOST_URL); }
};
```