Book Image

Hands-On RESTful Web Services with TypeScript 3

By : Biharck Muniz Araújo
5 (1)
Book Image

Hands-On RESTful Web Services with TypeScript 3

5 (1)
By: Biharck Muniz Araújo

Overview of this book

In the world of web development, leveraging data is the key to developing comprehensive applications, and RESTful APIs help you to achieve this systematically. This book will guide you in designing and developing web services with the power of TypeScript 3 and Node.js. You'll design REST APIs using best practices for request handling, validation, authentication, and authorization. You'll also understand how to enhance the capabilities of your APIs with ODMs, databases, models and views, as well as asynchronous callbacks. This book will guide you in securing your environment by testing your services and initiating test automation with different testing approaches. Furthermore, you'll get to grips with developing secure, testable, and more efficient code, and be able to scale and deploy TypeScript 3 and Node.js-powered RESTful APIs on cloud platforms such as the Google Cloud Platform. Finally, the book will help you explore microservices and give you an overview of what GraphQL can allow you to do. By the end of this book, you will be able to use RESTful web services to create your APIs for mobile and web apps and other platforms.
Table of Contents (20 chapters)
Free Chapter
1
Section 1: Unraveling API Design
5
Section 2: Developing RESTful Web Services
10
Section 3: Enhancing RESTful Web Services
15
Section 4: Extending the Capabilities of RESTful Web Services

Hypertext Application Language

As already mentioned in this Book, Hypertext Application Language (HAL) is a standard convention for defining hypermedia such as links to external resources. The idea of this section is to show you how to enable this feature.

In order to implement HAL in our order-api application, we will need to install a package called halson.

Just like with the other packages mentioned in this book, you can choose anyone you like.
halson is available at https://www.npmjs.com/package/halson.

The installation is simple, and it's just like any other npm package:

$ npm install --save halson

Now that you've installed halson, change the getOrder method, like so:

export let getOrder = (req: Request, res: Response, next: NextFunction) => {
const id = req.params.id
let order = orders.find(obj => obj.id === Number(id))
const httpStatusCode = order ? 200...