Which @angular/* package(s) are relevant/related to the feature request?

common

Description

In our project we use modular HttpClient with different setup of interceptors for accessing different API's.

We createcreateHttpClient helper for that:

exportfunctioncreateHttpClient(...features:HttpFeature<HttpFeatureKind>[]):HttpClient{assertInInjectionContext(createHttpClient);constinjector=createEnvironmentInjector([provideHttpClient(...features)],inject(EnvironmentInjector),);returninjector.get(HttpClient);}

And we use this helper inside{provide: CUSTOM_HTTP_CLIENT_TOKEN, useFactory: () => createHttpClient()}.

It works until we migrate tohttpResource, because there is no way to specify what instance ofHttpClient should be used.

Proposed solution

Add optionhttpClient?: HttpClient toHttpResourceOptions.

Alternatives considered

Create custom injection context, and runhttpResource inside it:

functionbindHttpResource<T>(resourceFactory:()=>HttpResourceRef<T>,httpClientToken:InjectionToken<HttpClient>):HttpResourceRef<T>{assertInInjectionContext(bindHttpResource);constinjector=Injector.create({providers:[{provide:HttpClient,useExisting:httpClientToken,}],parent:inject(Injector),});returnrunInInjectionContext(injector,resourceFactory);}