Property 'map' does not exist on type 'Observable<Response>'

Solution 1:

You need to import the map operator:

import 'rxjs/add/operator/map'

Or more generally:

import 'rxjs/Rx';

Notice: For versions of RxJS 6.x.x and above, you will have to use pipeable operators as shown in the code snippet below:

import { map } from 'rxjs/operators';
import { HttpClient } from '@angular/common/http';

// ...
export class MyComponent {
  constructor(private http: HttpClient) { }
  getItems() {
    this.http.get('https://example.com/api/items').pipe(map(data => {})).subscribe(result => {
      console.log(result);
    });
  }
}

This is caused by the RxJS team removing support for using See the breaking changes in RxJS' changelog for more info.

From the changelog:

operators: Pipeable operators must now be imported from rxjs like so: import { map, filter, switchMap } from 'rxjs/operators';. No deep imports.

Solution 2:

Revisiting this because my solution isn't listed here.

I am running Angular 6 with rxjs 6.0 and ran into this error.

Here's what I did to fix it:

I changed

map((response: any) => response.json())

to simply be:

.pipe(map((response: any) => response.json()));

I found the fix here:

https://github.com/angular/angular/issues/15548#issuecomment-387009186

Solution 3:

Just write this command in the VS Code terminal of your project and restart the project.

npm install rxjs-compat

You need to import the map operator by adding this:

import 'rxjs/add/operator/map';

Solution 4:

For the Angular 7v

Change

import 'rxjs/add/operator/map';

import { map } from "rxjs/operators";

And

 return this.http.get('http://localhost/ionicapis/public/api/products')
 .pipe(map(res => res.json()));

Solution 5:

I had the same issue with Angular 2.0.1 because I was importing Observable from

import { Observable } from 'rxjs/Observable';

I resolve my problem on importing Observable from this path instead

import { Observable } from 'rxjs';