feat: add typesafe pathname (#63)

Author: colinlienard

.changeset/rich-owls-laugh.md

@@ -0,0 +1,5 @@
+---
+'sv-router': patch
+---
+
+Add typesafe pathname

src/create-router.svelte.js

@@ -46,7 +46,7 @@ export function createRouter(r) {
 				return params.value;
 			},
 			get pathname() {
-				return location.pathname;
+				return /** @type {import('./index.d.ts').Path<T>} */ (location.pathname);
 			},
 			get search() {
 				return location.search;

src/index.d.ts

@@ -134,7 +134,7 @@ export type RouterApi<T extends Routes> = {
 		 */
 		params: AllParams<T>;
 		/** The reactive pathname of the URL. */
-		pathname: string;
+		pathname: Path<T>;
 		/** The reactive query string part of the URL. */
 		search: string;
 		/** The reactive history state that can be passed to the `navigate` function. */