Book Image

Learning TypeScript 2.x - Second Edition

By : Remo H. Jansen
Book Image

Learning TypeScript 2.x - Second Edition

By: Remo H. Jansen

Overview of this book

TypeScript is an open source and cross-platform statically typed superset of JavaScript that compiles to plain JavaScript and runs in any browser or host. This book is a step-by-step guide that will take you through the use and benefits of TypeScript with the help of practical examples. You will start off by understanding the basics as well as the new features of TypeScript 2.x. Then, you will learn how to work with functions and asynchronous programming APIs. You will continue by learning how to resolve runtime issues and how to implement TypeScript applications using the Object-oriented programming (OOP) and functional programming (FP) paradigms. Later, you will automate your development workflow with the help of tools such as Webpack. Towards the end of this book, you will delve into some real-world scenarios by implementing some full-stack TypeScript applications with Node.js, React and Angular as well as how to optimize and test them. Finally, you will be introduced to the internal APIs of the TypeScript compiler, and you will learn how to create custom code analysis tools.
Table of Contents (17 chapters)

Linting tools

The following tool is a code linting tool. A linting tool helps us to enforce certain code styling rules in our code base. For example, in a large development team, it is very common to have long discussions about the code styling.

The term code styling refers to certain cosmetic elements of our code, such as using spaces or tabs. However, sometimes the code styling involves certain rules that are not purely cosmetic and are intended to make our code more maintainable. A good example of this would be a code styling rule that enforces using trailing commas.

Code styling guidelines and rules are great but enforcing them can take a significant amount of human effort. We would have to review every single code change to make sure that the code contributions respect our code styling rules.

The main goal of a linting tool is to automate the enforcement of the code styling...