Method fetchDocument

docs/src/app/shared/doc-viewer/doc-viewer.ts:50–57

(url: string)

  private _cache: Record<string, Observable<string>> = {};

  fetchDocument(url: string): Observable<string> {
    if (this._cache[url]) {
      return this._cache[url];
    }

    const stream = this._http.get(url, {responseType: 'text'}).pipe(shareReplay(1));
    return stream.pipe(tap(() => (this._cache[url] = stream)));
  }
}

@Component({