sample-code-flow-http-config issue compiling

[mac-bhaird]

Describe the bug
Using the auth-config.module.ts bits from sample-code-flow-http-config project results in compile error

To Reproduce
Steps to reproduce the behavior:

1. Create new Angular 12 project
2. npm install angular-auth-oidc-client
3. Copy this file into project: https://github.com/damienbod/angular-auth-oidc-client/blob/main/projects/sample-code-flow-http-config/src/app/auth-config.module.ts
4. Add AuthConfigModule to AppModule
5. See error

`Error: node_modules/angular-auth-oidc-client/lib/auto-login/auto-login-all-routes.guard.d.ts:14:5 - error TS2416: Property 'canLoad' in type 'AutoLoginAllRoutesGuard' is not assignable to the same property in base type 'CanLoad'.
Type '(route: Route, segments: UrlSegment[]) => Observable' is not assignable to type '(route: Route, segments: UrlSegment[]) => boolean | UrlTree | Observable<boolean | UrlTree> | Promise<boolean | UrlTree>'.
Type 'Observable' is not assignable to type 'boolean | UrlTree | Observable<boolean | UrlTree> | Promise<boolean | UrlTree>'.

14 canLoad(route: Route, segments: UrlSegment[]): Observable;
~~~~~~~

Error: node_modules/angular-auth-oidc-client/lib/auto-login/auto-login-all-routes.guard.d.ts:15:5 - error TS2416: Property 'canActivate' in type 'AutoLoginAllRoutesGuard' is not assignable to the same property in base type 'CanActivate'.
Type '(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) => Observable' is not assignable to type '(route: ActivatedRouteSnapshot, state: RouterStateSnapshot) => boolean | UrlTree | Observable<boolean | UrlTree> | Promise<...>'. Type 'Observable' is not assignable to type 'boolean | UrlTree | Observable<boolean | UrlTree> | Promise<boolean | UrlTree>'.
Type 'Observable' is not assignable to type 'Observable<boolean | UrlTree>'.
The types of 'source.operator.call' are incompatible between these types.
Type '(subscriber: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/angular-auth-oidc-client/node_modules/rxjs/internal/Subscriber").Subscriber, source: any) => import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/nod...' is not assignable to type '(subscriber: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/rxjs/dist/types/internal/Subscriber").Subscriber, source: any) => import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/rxjs/dist/types/i...'.
Types of parameters 'subscriber' and 'subscriber' are incompatible.
Type 'Subscriber' is missing the following properties from type 'Subscriber': syncErrorValue, syncErrorThrown, syncErrorThrowable, _unsubscribeAndRecycle, and 2 more.

15 canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable;
~~~~~~~~~~~

Error: node_modules/angular-auth-oidc-client/lib/interceptor/auth.interceptor.d.ts:14:5 - error TS2416: Property 'intercept' in type 'AuthInterceptor' is not assignable to the same property in base type 'HttpInterceptor'.
Type '(req: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/@angular/common/http/http").HttpRequest, next: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/@angular/common/http/http").HttpHandler) =>...' is not assignable to type '(req: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/@angular/common/http/http").HttpRequest, next: import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/@angular/common/http/http").HttpHandler) =>...'. Two different types with this name exist, but they are unrelated.
Call signature return types 'Observable<HttpEvent>' and 'Observable<HttpEvent>' are incompatible.
The types of 'source' are incompatible between these types.
Type 'import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/angular-auth-oidc-client/node_modules/rxjs/internal/Observable").Observable' is not assignable to type 'import("D:/HCR/repos/experiments/angular-only/oidc-angular-client-spike-v3/oidc-angular-client/node_modules/rxjs/dist/types/internal/Observable").Observable'.

14 intercept(req: HttpRequest, next: HttpHandler): Observable<HttpEvent>;
~~~~~~~~~

Error: src/app/auth-config.module.ts:35:34 - error TS2345: Argument of type 'Promise<OpenIdConfiguration | undefined>' is not assignable to parameter of type 'Promise | Promise[]'.
Type 'Promise<OpenIdConfiguration | undefined>' is not assignable to type 'Promise'.
Type 'OpenIdConfiguration | undefined' is not assignable to type 'OpenIdConfiguration'.
Type 'undefined' is not assignable to type 'OpenIdConfiguration'.

35 return new StsConfigHttpLoader(config$);
~~~~~~~`

Expected behavior
Should build successfully

[FabianGosebrink]

Just did this and got no error. Maybe duplicate to #1178 ?

[mac-bhaird]

yeps, downgraded rxjs to 6.6.7 and it compiled!