Most routing bugs are silent. You rename a path, forget one link, and suddenly a whole section of your app 404s for users while your local build stays green.

By declaring routes as typed patterns, every href is built from a single source of truth:

let routes = route({
  blog: get("/blog"),
  blogPost: get("/blog/:slug"),
});

// slug is required and typed — no typos survive the compiler
routes.blogPost.href({ slug: post.slug });

• Renaming a path updates every generated href automatically.
• Missing or wrong params are caught at build time.
• Dynamic segments are typed, not strings you hope are correct.

It's a small shift that pays for itself the first time a refactor would have otherwise broken a deep link.