Any programmer working with a dynamically typed language will tell you how hard it is to scale to more lines of code and more engineers. That’s why Facebook, Google, and Microsoft invented gradual static type layers for their dynamically typed JavaScript and Python code. This practical book shows you how one such type layer, TypeScript, is unique among them: it makes programmin...(展开全部)

With the demand for ever more complex websites, the need to write robust, standard-compliant JavaScript has never been greater. TypeScript is modern JavaScript with the support of a first-class type system, which makes it simpler to write complex web systems. With this book, you’ll explore core concepts and learn by building a series of websites and TypeScript apps.You’ll start with an introduction to TypeScript features that are often overlooked in other books, before moving on to creating a simple markdown parser. You’ll then explore React and get up to speed with creating a client-side contacts manager. Next, the book will help you discover the Angular framework and use the MEAN stack to create a photo gallery. Later sections will assist you in creating a GraphQL Angular Todo app and then writing a Socket.IO chatroom. The book will also lead you through developing your final Angular project which is a mapping app. As you progress, you’ll gain insights into React with Docker and microservices. You’ll even focus on how to build an image classification program with machine learning using TensorFlow. Finally, you’ll learn to combine TypeScript and C# to create an ASP.NET Core-based music library app.By the end of this book, you’ll be able to confidently use TypeScript 3.0 and different JavaScript frameworks to build high-quality apps.

学习基础知识：学习 TypeScript 的不同类型和类型运算符，了解其作用和用法。 探讨高级话题：理解 TypeScript 复杂的类型系统，学习如何安全地处理错误和构建异步程序。 联系实际应用：在你钟爱的前后端框架中使用 TypeScript，把现有的 JavaScript 项目迁移到 TypeScript，以及在生产环境中运行 TypeScript 应用。

This book is for JavaScript developers seeking to utilize their Node.js and Typescript skills to build microservices and move away from the monolithic architecture. Prior knowledge of TypeScript and Node.js is assumed.

The book introduces the TypeScript language and its features to anyone looking to develop rich web applications. Whether you are new to web development or are an experienced engineer with strong JavaScript skills, this book will get you writing code quickly. A basic understanding of JavaScript and its language features are necessary for this book.

Refactoring improves your code without changing its behavior. With refactoring, the best approach is to apply small targeted changes to a codebase. Instead of doing a huge sweeping change to your code, refactoring is better as a long-term and continuous enterprise. Refactoring TypeScript explains how to spot bugs and remove them from your code.You’ll start by seeing how wordy conditionals, methods, and null checks make code unhealthy and unstable. Whether it is identifying messy nested conditionals or removing unnecessary methods, this book will show various techniques to avoid these pitfalls and write code that is easier to understand, maintain, and test.By the end of the book, you’ll have learned some of the main causes of unhealthy code, tips to identify them and techniques to address them.

This book is for JavaScript developers seeking to utilize their Node.js and Typescript skills to build microservices and move away from the monolithic architecture. Prior knowledge of TypeScript and Node.js is assumed.

The book introduces the TypeScript language and its features to anyone looking to develop rich web applications. Whether you are new to web development or are an experienced engineer with strong JavaScript skills, this book will get you writing code quickly. A basic understanding of JavaScript and its language features are necessary for this book.

微软推出的开源TypeScript语言是JavaScript的超集，引入了静态类型和面向对象的若干特征，可以分模块构建易维护的JavaScript代码。本书用于TypeScript 3.3.3入门，以构建大型可扩展的Web应用。 本书分为10章，介绍TypeScript的基本类型、变量、运算符、数字和字符串，流程控制，数组、元组、迭代器和生成器，函数，常用的几款工具，面向对象编程，泛型，声明文件与项目配置，以及App实战项目等。最后，给出TypeScript JSX的基础内容作为参考。作者还为每章配备了课件与教学视频，方便自学。本书内容详尽、示例丰富，既适合TypeScript初学者及前端开发人员阅读，也适合高等院校和培训学校计算机相关专业的师生教学参考。

学习基础知识：学习 TypeScript 的不同类型和类型运算符，了解其作用和用法。 探讨高级话题：理解 TypeScript 复杂的类型系统，学习如何安全地处理错误和构建异步程序。 联系实际应用：在你钟爱的前后端框架中使用 TypeScript，把现有的 JavaScript 项目迁移到 TypeScript，以及在生产环境中运行 TypeScript 应用。