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import { Injectable } from '@angular/core';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { Observable, throwError } from 'rxjs';
import { catchError } from 'rxjs/operators';
import { MonthlySales } from './monthly-sales';
@Injectable({
providedIn: 'root'
})
export class SalesService {
private salesUrl = 'api/sales/sales.json';
constructor(private http: HttpClient) { }
getSalesByMonth(): Observable<MonthlySales[]>{
return this.http.get<MonthlySales[]>(this.salesUrl).pipe(catchError(this.handleError));
}
private handleError(err: HttpErrorResponse){
return throwError(`An error occurred: ${err}`);
}
}
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