Environment HttpInterceptor

environment.interceptor.ts

import {Injectable} from '@angular/core';
import {HttpEvent, HttpHandler, HttpInterceptor, HttpRequest} from '@angular/common/http';
import {Observable} from 'rxjs/Observable';
import {environment} from '../../../environments/environment';

@Injectable()
export class EnvironmentInterceptorService implements HttpInterceptor {
  constructor() {
  }

  public intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    const update = {} as any;

    update.url = `${environment.serverName}/${req.url}`;

    return next.handle(req.clone(update));
  }
}