angular2 rxjs .map在版本2.0.1中不起作用

Question

此代碼適用於angular2 v.2.0.0 .rc.2，但不適用於angular2 v2.0.1

app.appcomponent.ts

import { Component, OnInit } from "@angular/core";
import { Injectable } from '@angular/core';
import { Http, Response, URLSearchParams } from "@angular/http";    
import { IFood } from "./food";
import { Headers, RequestOptions } from "@angular/http";

我可以導入這個使用.map對嗎？

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

@Component({
selector: "my-app",
template: `
    <h1>My First Angular 2 App</h1>
        <ul *ngFor='let food of foods'>
            <li>{{food.foodName}}</li>
        </ul>
    `,
templateUrl: "./app/form.html"
})

@Injectable()
export class AppComponent implements OnInit {
public values: string[];
public headers: Headers;
errorMessage: string;

我的控制器中有食物清單，食物，食物名稱

foods: IFood[];
foodModel = <IFood>{}; 

constructor(private http: Http) {
    this.http = http;
    this.headers = new Headers();
    this.headers.append("Content-Type", "application/json");

  }

 ngOnInit() {
    return this.http.get("/home/getdata")

有.map不起作用，我們不能在angular2 2.0.1中使用.map嗎？

        .map((response: Response) => <IFood[]>response.json())
        .subscribe(data => this.foods = data, error => 
            this.errorMessage =  <any>error);
}     
}

我需要創建服務嗎？ 如何解決這個問題，謝謝

Answer 1

嘗試更新到Typescript 2.0.3

這解決了我的問題。

並確保您使用的是ECMAScript 6