Error: Property 'map' does not exist on type 'Observable'

问题

After I updated angular/cli, I got an error:

error TS2339: Property 'map' does not exist on type 'Observable<Response>'

I tried every possible solution from Property 'map' does not exist on type 'Observable<Response>'

but still the error exists.

回答1:

Its easy to post an answer when you provide your code instead of a screenshot. Anyhow, you have to pipe it:

getUsers() {
    return this._http.get(this.baseUrl+'/show-users', this.options)
                     .pipe(
                          map((response:Response)=>response.json())
                      );

Remember to import map like this:

import { map } from 'rxjs/operators';

回答2:

For the latest Version of rxjs we need to install npm install rxjs-compat from terminal then declare

import 'rxjs/add/operator/map';

回答3:

You can find a solution by using pipe. Here are the steps...

First import map

import {map} from 'rxjs/operators';

Modify your getuser() and other all functions by using pipe

getUser(){
 this._http.get(this.baseUrl+'/show-users', this.options).pipe(map((response:Response)=>response.json()));                
}

来源：https://stackoverflow.com/questions/50503366/error-property-map-does-not-exist-on-type-observable