[angular] angular-in-memory-web-api 모듈 설치

npm install angular-in-memory-web-api --save

hero tutorial HTTP 예제

1. getHeroes(): Promise<Hero[]> {
2. return this.http.get(this.heroesUrl)
3. .toPromise()
4. .then(response => response.json().data as Hero[])
5. .catch(this.handleError);
6. }

response.json() 로 해서 heroes 가 출력됨.