Book Image

Switching to Angular - Third Edition

By : Minko Gechev
Book Image

Switching to Angular - Third Edition

By: Minko Gechev

Overview of this book

Align your work to stable APIs of Angular, version 5 and beyond, with Angular expert Minko Gechev. Angular is the modern Google framework for you to build high-performance, SEO-friendly, and robust web applications. Switching to Angular, Third Edition, shows you how you can align your current and future development with Google's long-term vision for Angular. Gechev shares his expert knowledge and community involvement to give you the clarity you need to confidently switch to Angular and stable APIs. Minko Gechev helps you get to grips with Angular with an overview of the framework, and understand the long-term building blocks of Google's web framework. Gechev then gives you the lowdown on TypeScript with a crash course, so you can take advantage of Angular in its native, statically typed environment. You'll next move on to see how to use Angular dependency injection, plus how Angular router and forms, and Angular pipes, are designed to work for your projects today and in the future. You'll be aligned with the vision and techniques of the one Angular, and be ready to start building quick and efficient Angular applications. You'll know how to take advantage of the latest Angular features and the core, stable APIs you can depend on. You'll be ready to confidently plan your future with the Angular framework.
Table of Contents (10 chapters)

Using ambient type definitions

Although static typing is amazing, most of the frontend libraries we use are built with JavaScript, which is dynamically typed. Since we'd want to use TypeScript with Angular, not having type definitions in the code that uses external JavaScript libraries is a big issue; it prevents us from taking advantage of the compile-time type checking.

TypeScript was built keeping these points in mind. In order to allow the TypeScript compiler to take care of what it does best, we can use the so called ambient type definitions. They allow us to provide external type definitions for the existing JavaScript libraries. This way, they provide hints to the compiler.

Using predefined ambient type definitions

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