My question sounds similar to Cannot find the '@angular/common/http' module and Error loading @angular/common/http - angular 2 but the problem is a bit different: I am using Angular 4.3.5 and I am trying to read data from a Web API. (This API puts out JSON data and is using SignalR and .net Core). I have followed several tutorials and came up with this code for the class that will actually contact the service:
import 'rxjs/add/operator/map';
import { HttpClient, HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { Configuration } from './Configuration.js';
@Injectable()
export class DataService {
private actionUrl: string;
constructor(private http: HttpClient, private configuration: Configuration) {
this.actionUrl = configuration.serviceUrl;
}
//public getAll<T>(): Observable<T> {
// return this.http.get<T>(this.actionUrl);
//}
public getSingle<T>(id: number): Observable<T> {
return this.http.get<T>(this.actionUrl + id);
}
}
@Injectable()
export class CustomInterceptor implements HttpInterceptor {
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
if (!req.headers.has('Content-Type')) {
req = req.clone({ headers: req.headers.set('Content-Type', 'application/json') });
}
req = req.clone({ headers: req.headers.set('Accept', 'application/json') });
console.log(JSON.stringify(req.headers));
return next.handle(req);
}
}
Now, building this project (I am using Visual Studio 2017 Enterprise) and running a gulp task to transpile the .ts to .js works just fine, so do all the intellisense-tooltips - the IDE does recognize the existance of those things.
But if I open it up in a browser (doesnt matter if firefox, edge or chrome) I get the following error:
zone.js:958 GET http://localhost:3966/libs/@angular/common/bundles/common.umd.js/http 404 (Not Found)
If I edit the transpiled javascript file by hand and write common-http.umd.js there, the file is found. (This is the reason why at the top I import Configuration.js instead of Configuration - it doesnt seem to want to automatically resolve the suffix, like in some tutorials). I hope I am not too vague, since this is my first Time asking something publically. Also I was not able to find an answer in the given questions.
