service.ts

Frontend/facial-expression.service.ts

+import {Injectable} from '@angular/core';
+import { Observable } from 'rxjs/internal/Observable';
+import {HttpClient} from '@angular/common/http'
+
+@Injectable()
+export class FacialExpression {
+    constructor(private http: HttpClient){}
+
+    detectedEmotion():Observable<Object>{
+        return this.http.get('/assets/data/face.json');
+    }
+}
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