getBooks(): Observable<Array<Books>> { return this.http .get<{ items: Books[] }>( 'https://www.googleapis.com/books/v1/volumes?maxResults=5&orderBy=relevance&q=oliver%20sacks' ) .pipe(map((books) => books.items || [])); } export interface Books { id: string; volumeInfo: { title: string; authors: Array<string>; }; } Trying to understand the TypeScript syntax here: .get<{ items: Books[] }>( Does this mean that first it gets the URL and does a map filter operator on it, then it's returning an object that only contains an items property with the interface Books[]? Continue reading...
