Angular 4 - Observable catch error

With angular 6 and rxjs 6 Observable.throw(), Observable.off() has been deprecated instead you need to use throwError

ex : 

return this.http.get('yoururl')
  .pipe(
    map(response => response.json()),
    catchError((e: any) =>{
      //do your processing here
      return throwError(e);
    }),
  );

If you want to use the catch() of the Observable you need to use Observable.throw() method before delegating the error response to a method

import { Injectable } from '@angular/core';
import { Headers, Http, ResponseOptions} from '@angular/http';
import { AuthHttp } from 'angular2-jwt';

import { MEAT_API } from '../app.api';

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';

@Injectable()
export class CompareNfeService {


  constructor(private http: AuthHttp) {}

  envirArquivos(order): Observable < any > {
    const headers = new Headers();
    return this.http.post(`${MEAT_API}compare/arquivo`, order,
        new ResponseOptions({
          headers: headers
        }))
      .map(response => response.json())
      .catch((e: any) => Observable.throw(this.errorHandler(e)));
  }

  errorHandler(error: any): void {
    console.log(error)
  }
}

Using Observable.throw() worked for me

Tags:

Angular

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