image.service.ts
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	import {EventEmitter, Injectable} from '@angular/core';
	import {HttpClient} from '@angular/common/http';
	import {Observable } from 'rxjs';
	import {map} from 'rxjs/operators';
	import {Image} from '../models/models';

	@Injectable({
	providedIn: 'root'
	})
	export class ImageService {
	constructor(private http: HttpClient) {
	}

	onClickedImage = new EventEmitter<Image>();

	public getImage(imageUrl: string): Observable<File> {
	return this.http
	.get(imageUrl, { responseType: 'blob' })
	.pipe(map((res: any) => res.blob())); }
	}