DI with cyclic dependency with custom HTTP and ConfigService

Question

I\'m trying to implement a ConfigService to retrieve the right configuration for the right environment in the project. I\'m currently encountering a cyclic dependancy

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Answer 1

DI can't resolve cyclic dependencies. A workaround is to inject the injector and acquire the instance imperatively:

@Injectable()
class ConfigService {
  private http: Http;
  constructor(injector:Injector) {
    setTimeout(() => this.http = injector.get(Http);
  }
}