Observable errors with Angular2 beta.12 and RxJs 5

Question

Hello,

I am using Angular2 beta 12 running in VS2015. When I update to rxjs from 5.0.0-beta.2 to beta.3 I encounter a range of exceptions generally relating to my promises.

E.g.

1. Property map does not exist on type Observable<Response>
2. Property share does not exist in type Observable<Response>
3. Ambient modules declaration cannot specify relative module name
4. Ambient modules cannot be nested in other modules or namespaces.

Package.json

{
  "name": "ASP.NET",
  "version": "0.0.0",
  "scripts": {
    "tsc": "tsc",
    "tsc:w": "tsc -w",
    "lite": "lite-server",
    "start": "concurrent \"npm run tsc:w\" \"npm run lite\" "
  },
  "dependencies": {
    "angular2": "2.0.0-beta.12",
    "systemjs": "0.19.24",
    "es6-promise": "3.1.2",
    "es6-shim": "0.35.0",
    "reflect-metadata": "0.1.3",
    "rxjs": "5.0.0-beta.3", // beta.2 allowed project to build
    "zone.js":"0.6.6"
  },
  "devDependencies": {
    "gulp": "3.9.1",
    "gulp-concat": "2.6.0",
    "gulp-cssmin": "0.1.7",
    "gulp-uglify": "1.5.3",
    "rimraf": "2.2.8",
    "concurrently": "2.0.0",
    "lite-server": "2.1.0",
    "typescript": "1.8.9"
  }
}

Issue relates to map function in this code:

import {Injectable} from 'angular2/core';
import {Http, Response} from 'angular2/http';
import {Headers, RequestOptions} from 'angular2/http';
import {Observable}     from 'rxjs/Observable';

import {ApplicationVM} from '../../Applications/ViewModels/Application.ViewModel';

@Injectable()
export class ApplicationService {
    constructor(private http: Http) { }

    private _serviceUrl = './../api/';

    getApplications() {
        return this.http.get(this._serviceUrl + "applications/active")
            .map(res => <ApplicationVM[]>res.json())
           // .map((res: Response) => res.json())
            .do(data => console.log(data)) // eyeball results in the console
            .catch(this.handleError);
    }

    private handleError(error: Response) {
        console.log(error);
        return Observable.throw(error.json().error || 'Server error');
    }

}

In another, the problem is with share()

 constructor(private _http: Http) {
     console.log("constructor");
     this.menulist$ = new Observable(observer => this._menulistObserver = observer).share();
     this.menuState$ = new Observable(observer => this._menuStateObserver = observer).share();
     this.menuWidth$ = new Observable(observer => this._menuWidthObserver = observer).share();}

I feel this might be important - a range of rxjs files have underlined red for relative references ../../Observable (example below is in interval.d.ts)

import { IntervalObservable } from '../../observable/IntervalObservable';
declare module '../../Observable' {
    namespace Observable {
        let interval: typeof IntervalObservable.create;
    }
}

My boot.ts

///<reference path="./../node_modules/angular2/typings/browser.d.ts"/>
import {bootstrap}      from 'angular2/platform/browser';
import {ROUTER_PROVIDERS} from 'angular2/router';
import {AppComponent} from './app.component';
import {HTTP_PROVIDERS}    from 'angular2/http';
import 'rxjs/Rx'; // kitchen sink

// Bootstrap the application and reference the required directives
bootstrap(AppComponent, [ROUTER_PROVIDERS, HTTP_PROVIDERS]);

My html page

 <!-- 1. Load libraries -->
    <script src="~/nodelibs/angular2/bundles/angular2-polyfills.js"></script>
    <script src="~/nodelibs/systemjs/system.src.js"></script>
    <script src="~/nodelibs/typescript/lib/typescript.js"></script>
    <script src="~/nodelibs/rxjs/bundles/Rx.js"></script>
    <script src="~/nodelibs/angular2/bundles/angular2.dev.js"></script>

    <script src="~/nodelibs/angular2/bundles/router.dev.js"></script>
    <script src="~/nodelibs/angular2/bundles/http.dev.js"></script>


    <!-- 2. Configure SystemJS -->
    <script>

    var rootPath = "@Url.Content("~/")";

    System.config({
        //transpiler: 'typescript',
        //typescriptOptions: { emitDecoratorMetadata: true },
        baseURL: rootPath,
        defaultJSExtensions: true,
        packages: {
            app: {
                //format: 'register',
                defaultExtension: 'js'
            }, map: {

                'rxjs/observable/*' : 'nodelibs/rxjs/observable/*.js',
                'rxjs/operators/*' : 'nodelibs/rxjs/operators/*.js',
                'rxjs/*' : 'nodelibs/rxjs/*.js'
            }
        }
    });
    System.import("/app/boot.js")
          .then(null, console.error.bind(console));

    </script>

I'm stumped and would appreciated some assistance.

Thank, Dan.

Answer 1

Regarding operators, you need to import them manually since they aren't included in the Observable class by default.

For this you can do either:

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

Or (to include all operators):

import {Observable} from 'rxjs/Rx';

Otherwise normally you don't need to define rxjs into your SystemJS configuration in the map block. Including the corresponding bundled file into a script tag is enough.

Answer 2

According to Angular's package.json you should use exactly RxJS 5.0.0-beta.2 https://github.com/angular/angular/blob/master/package.json#L37

Answer 3

For VS2015 there's a workaround for this problem listed on GitHub here

As work arounds for now, you can replace C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\CommonExtensions\Microsoft\TypeScript\typescriptServices.js with the file in https://raw.githubusercontent.com/Microsoft/TypeScript/Fix8518/lib/typescriptServices.js. First take a local backup though.

IMPORTANT: Be sure you're on VS2015 Update 2 and have TypeScript > 1.8.2 installed

(My VS would not start after replacing the file on Update 1)

I am using rxjs 5.0.0-beta.6 btw.