SSG Build cannot extract routes #31254
Description
Which @angular/* package(s) are the source of the bug?
Don't known / other
Is this a regression?
Yes
Description
Dear Angular DEVs,
I have a pretty simple/basic setup of an angular app using the new SSG Feature.
With angular 20.3.1 on Prod Build I get following (not very expressive) error message
✘ [ERROR] An error occurred while extracting routes.
NG0401
On angular 20.2.3 it was working fine. and generating static pages.
my app.routes.server.ts looks like this:
export const serverRoutes: ServerRoute[] = [
{
path: '**',
renderMode: RenderMode.Prerender,
fallback: PrerenderFallback.Client,
async getPrerenderParams() {
const routes = inject(RoutesService);
const ids = await routes.getRoutes(); // returns ['/twix', '/snickers']
return ids.map(x => ({ '**': x }));
},
},
];PS: LOVE the new SSG Feature. works awesome (with angular 20.2.3)
best,
Dominik
Please provide a link to a minimal reproduction of the bug
No response
Please provide the exception or error you saw
> ✘ [ERROR] An error occurred while extracting routes.
>
> NG0401
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 20.3.1
Node: 22.19.0
Package Manager: npm 10.9.3
OS: linux x64
Angular: 20.3.1
... build, cli, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-server, router, ssr
Package Version
---------------------------------------
@angular-devkit/architect 0.2003.1
@angular-devkit/build-angular 20.3.1
@angular-devkit/core 20.3.1
@angular-devkit/schematics 20.3.1
@schematics/angular 20.3.1
rxjs 7.8.2
typescript 5.8.3
Anything else?
No response