Book Image

Mastering TypeScript - Fourth Edition

By : Nathan Rozentals
4.7 (3)
Book Image

Mastering TypeScript - Fourth Edition

4.7 (3)
By: Nathan Rozentals

Overview of this book

TypeScript is both a language and a set of tools to generate JavaScript, designed by Anders Hejlsberg at Microsoft to help developers write enterprise-scale JavaScript. Mastering Typescript is a golden standard for budding and experienced developers. With a structured approach that will get you up and running with Typescript quickly, this book will introduce core concepts, then build on them to help you understand (and apply) the more advanced language features. You’ll learn by doing while acquiring the best programming practices along the way. This fourth edition also covers a variety of modern JavaScript and TypeScript frameworks, comparing their strengths and weaknesses. You'll explore Angular, React, Vue, RxJs, Express, NodeJS, and others. You'll get up to speed with unit and integration testing, data transformation, serverless technologies, and asynchronous programming. Next, you’ll learn how to integrate with existing JavaScript libraries, control your compiler options, and use decorators and generics. By the end of the book, you will have built a comprehensive set of web applications, having integrated them into a single cohesive website using micro front-end techniques. This book is about learning the language, understanding when to apply its features, and selecting the framework that fits your real-world project perfectly.
Table of Contents (19 chapters)
17
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18
Index

Serverless setup

In this section of the chapter, we will set up a serverless development environment using the Amazon Serverless Application Model command-line interface. We will use this command-line interface to initialize an API application, which will also generate some sample code for us. We will then deploy this application to the cloud, again using the command-line interface.

AWS Lambda architecture

Before we go ahead and build a Lambda function, let's explore the pieces of the AWS architecture that we will use in order to respond to a web request. These elements are shown in the following diagram:

Figure 15.1: AWS Lambda architectural components

Here, we start with a client request, on the far left-hand side of the diagram. This request takes the form of an HTTP request for a GET call on the /users API endpoint. The first architectural element that will respond to this request is Amazon API Gateway. Amazon API Gateway is an AWS service that is used...