Book Image

Learn TypeScript 3 by Building Web Applications

By : Sebastien Dubois, Alexis Georges
Book Image

Learn TypeScript 3 by Building Web Applications

By: Sebastien Dubois, Alexis Georges

Overview of this book

TypeScript is a superset of the JavaScript programming language, giving developers a tool to help them write faster, cleaner JavaScript. With the help of its powerful static type system and other powerful tools and techniques it allows developers to write modern JavaScript applications. This book is a practical guide to learn the TypeScript programming language. It covers from the very basics to the more advanced concepts, while explaining many design patterns, techniques, frameworks, libraries and tools along the way. You will also learn a ton about modern web frameworks like Angular, Vue.js and React, and you will build cool web applications using those. This book also covers modern front-end development tooling such as Node.js, npm, yarn, Webpack, Parcel, Jest, and many others. Throughout the book, you will also discover and make use of the most recent additions of the language introduced by TypeScript 3 such as new types enforcing explicit checks, flexible and scalable ways of project structuring, and many more breaking changes. By the end of this book, you will be ready to use TypeScript in your own projects and will also have a concrete view of the current frontend software development landscape.
Table of Contents (15 chapters)

Introducing module resolution

Module resolution is the process used to find the definitions of the modules that you want to use. Without module resolution, TypeScript wouldn't be able to provide you with useful suggestions regarding what can be imported and what can't. Also, it wouldn't be able to perform type checking for the code using those modules.

Module loaders and bundlers (for example, webpack: https://webpack.js.org/concepts/module-resolution) also perform module resolution, but be careful not to mix that process with what we will describe here, as it is specific to how TypeScript works, even if the ideas are closely related.

Let's look at resolution strategies.

Resolution strategies

TypeScript...