Type 'typeof HttpHandler' is not assignable to type

I’m submitting a…

[x] Bug report  

A bit of context first - I’m trying to set up an application that has dynamic routing where the routes are retrieved from elsewhere (let’s say a RoutingService for now).

I have this app-routing.module.ts so far:

import { NgModule }                 from '@angular/core';
import { HttpClient, HttpHandler }  from '@angular/common/http';
import { ReflectiveInjector }       from '@angular/core';
import { RouterModule, Routes }     from '@angular/router';
import { RoutingService }           from './app-routing.service';

// The line that causes the typescript errors
const injector = ReflectiveInjector.resolveAndCreate([RoutingService, HttpClient, HttpHandler]);

const routingService = injector.get(RoutingService);

@NgModule({
  imports: [
    RouterModule.forRoot(routingService.getRoutes())
  ],
  exports: [
    RouterModule
  ]
})
export class AppRoutingModule {}

The line with a comment above it seems to be causing the following error from Typescript:

src/app/app-routing.module.ts(7,54): error TS2345: Argument of type '(typeof HttpHandler | typeof HttpClient | typeof RoutingService)[]' is not assignable to parameter of type 'Provider[]'.
[0]   Type 'typeof HttpHandler | typeof HttpClient | typeof RoutingService' is not assignable to type 'Provider'.
[0]     Type 'typeof HttpHandler' is not assignable to type 'Provider'.
[0]       Type 'typeof HttpHandler' is not assignable to type 'FactoryProvider'.
[0]         Property 'provide' is missing in type 'typeof HttpHandler'.

The code works fine in the browser but fails the typescript build which stops the whole app being built.

Is there any way to fix these errors?

Or alternatively a more elegant way of retrieving external routes in the module file above?

Thanks