Angular 2 beta.17: Property 'map' does not exist on type 'Observable<Response>'

Question

You need to import the map operator:

import 'rxjs/add/operator/map'

I upgraded my gulp-typescript plugin to the latest version (2.13.0) and now it compiles without hitch.

UPDATE 1: I was previously using gulp-typescript version 2.12.0

UPDATE 2: If you are upgrading to the Angular 2.0.0-rc.1, you need to do the following in your appBoot.ts file:

///<reference path="./../typings/browser/ambient/es6-shim/index.d.ts"/>
import { bootstrap } from "@angular/platform-browser-dynamic";
import { ROUTER_PROVIDERS } from '@angular/router-deprecated';
import { HTTP_PROVIDERS } from '@angular/http';
import { AppComponent } from "./path/AppComponent";
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/toPromise';
// import 'rxjs/Rx'; this will load all features
import { enableProdMode } from '@angular/core';
import { Title } from '@angular/platform-browser';



//enableProdMode();
bootstrap(AppComponent, [
    ROUTER_PROVIDERS,
    HTTP_PROVIDERS,
    Title
]);

The important thing being the reference to es6-shim/index.d.ts

This assumes you have installed the es6-shim typings as shown here:

More on the typings install from Angular here: https://angular.io/docs/ts/latest/guide/typescript-configuration.html#!#typings

Rxjs 5.5 “ Property ‘map’ does not exist on type Observable.

The problem was related to the fact that you need to add pipe around all operators.

Change this,

this.myObservable().map(data => {})

to this

this.myObservable().pipe(map(data => {}))

And

Import map like this,

import { map } from 'rxjs/operators';

It will solve your issues.

In my case it wouldn't enough to include only map and promise:

import 'rxjs/add/operator/map';
import 'rxjs/add/operator/toPromise';

I solved this problem by importing several rxjs components as official documentation recommends:

1) Import statements in one app/rxjs-operators.ts file:

// import 'rxjs/Rx'; // adds ALL RxJS statics & operators to Observable

// See node_module/rxjs/Rxjs.js
// Import just the rxjs statics and operators we need for THIS app.

// Statics
import 'rxjs/add/observable/throw';

// Operators
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/debounceTime';
import 'rxjs/add/operator/distinctUntilChanged';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/switchMap';
import 'rxjs/add/operator/toPromise';

2) Import rxjs-operator itself in your service:

// Add the RxJS Observable operators we need in this app.
import './rxjs-operators';

If you happen to see this error in VS2015, there's a github issue & workaround mentioned here:

https://github.com/Microsoft/TypeScript/issues/8518#issuecomment-229506507

This did help me resolve the property map does not exist on observable issue. Besides, make sure you have typescript version above 1.8.2