[Bug]: SyntaxError: The requested module '@angular/core/rxjs-interop' does not provide an export named 'toSignal'

[harshal-99]

Version

^14.2.2

Steps to reproduce

• clone https://github.com/thymikee/jest-preset-angular
• run cd jest-preset-angular/examples/example-app-v17
• run yarn
• run ng add @ngrx/store@17 --no-minimal
• make sure app.config looks like this

import { provideHttpClient } from '@angular/common/http';
import { importProvidersFrom } from '@angular/core';
import { provideProtractorTestingSupport } from '@angular/platform-browser';
import { provideRouter } from '@angular/router';
import { HttpClientInMemoryWebApiModule } from 'angular-in-memory-web-api';

import { routes } from './app.routes';
import { InMemoryDataService } from './in-memory-data.service';
import { HeroService, UserService } from './model';
import { TwainService } from './twain/twain.service';
import { provideStore } from '@ngrx/store';
import { reducers, metaReducers } from './reducers';

export const appProviders = [
    provideRouter(routes),
    provideHttpClient(),
    provideProtractorTestingSupport(),
    importProvidersFrom(HttpClientInMemoryWebApiModule.forRoot(InMemoryDataService, { dataEncapsulation: false })),
    HeroService,
    TwainService,
    UserService,
    provideStore(reducers, { metaReducers }),
];

export const appConfig = {
    providers: appProviders,
};

• run yarn test-esm

for all test you will get an error SyntaxError: The requested module '@angular/core/rxjs-interop' does not provide an export named 'toSignal'

Expected behavior

All tests to pass successfully if ngrx store is added

Actual behavior

after adding ngrx store tests fail

Additional context

None

Environment

System: 
  Apple M1 Mac

[LukasSefcik]

Is there any workaround for this error?

[harshal-99]

Is there any workaround for this error?

Either use karma and Jasmine or don't use signal

[ahnpnl]

This issue only happens if you use Jest in ESM mode. CJS mode works fine

[LukasSefcik]

Yes, CJS works just fine but is slow. I am trying to speed up my tests using experimental ESM mode.

[ahnpnl]

I tried to investigate this issue a while ago. I couldn't get so far but it has to do something with Jest runtime