Preserve final base hash in resolved urls.

.changeset/funny-chairs-bake.md

@@ -0,0 +1,5 @@
+---
+"@chialab/synapse": patch
+---
+
+Preserve final base hash in resolved urls.

src/Router/Router.ts

@@ -568,7 +568,7 @@ export class Router extends Emitter<{
             return url.href;
         }
 
-        return `${url.pathname}${url.search}${url.hash}`;
+        return `${url.pathname}${url.search}${url.hash || (this.base.endsWith('#') ? '#' : '')}`;
     }
 
     /**

test/Router.spec.js

@@ -69,6 +69,17 @@ describe('Router', () => {
         expect(new Router({ origin: 'http://local', base: '/base' }).resolve('/test?query')).toBe('/base/test?query');
     });
 
+    test('should resolve a path with base hash', () => {
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('')).toBe('/base#');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('/')).toBe('/base#');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('test')).toBe('/base#/test');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('/test')).toBe('/base#/test');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('test/')).toBe('/base#/test');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('/test/')).toBe('/base#/test');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('//test//')).toBe('/base#/test');
+        expect(new Router({ origin: 'http://local', base: '/base#' }).resolve('/test?query')).toBe('/base#/test?query');
+    });
+
     test('should navigate', async () => {
         const router = new Router(
             {