Here is a piece of an application that parses JSON input and displays books data with reviews.

Your job is to implement two functions at src/app/app.js file. Build the project to run the unit tests and check how your code works with sample data.

1. Implement parseBooksData(books, reviews) that will create an array of BookWithReview objects, by parsing passed arrays books and reviews. You can find a sample data at app/dataset/books.json file and at app/dataset/reviews.json file. Data from app/dataset/books.json will be passed as books argument and data from app/dataset/reviews.json will be passed as reviews argument. Each BookWithReview object should contain the id, title and all reviews matched by bookId attribute from reviews array.

2. Implement displayBooks(parentNode, books) that should append DOM nodes to passed parentNode to render information about passed books array which contains BookWithReviews objects. For sample data located at app/dataset following DOM tree should be created under the parentNode:

  <ol>
    <li>
      <span>Some book title</span>
      <ul>
        <li>Great book! by John</li>
        <li>Worth reading. by Alice</li>
      </ul>
    </li>
    <li>
      <span>Another book title</span>
      <ul>
        <li>Waste of time :( by Joe</li>
      </ul>
    </li>
    <li>
      <span>Best book title ever</span>
    </li>
  </ol>

Build the project at any time to check if your code is passing tests.

Good luck!