Essential TypeScript
Essential TypeScript
It's JavaScript... only better.
About the Book
JavaScript is old and its dynamic nature can make it very difficult to build large applications in a maintainable way. But, add the immense power of compile-type static typing and all of the sudden you've got an enterprise-ready language that saves you from many common JavaScript issues and actually makes web development an enjoyable experience. TypeScript is a superset of JavaScript - completely compatible in every way, yet it brings the language to a whole new level.
JavaScript is the defacto language of the world. TypeScript is JavaScript, only better.
Join experienced coder, Jess Chadwick, as he explores the world of TypeScript. Starting with the basics and fundamental ECMAScript 2015 features that TypeScript expands upon, Jess shows you all the ways that TypeScript allows you to bring your JavaScript development to the next level.
Your feedback is important!
You are welcome to choose to pay any amount you wish in order to access this book. If you choose not to pay anything, please repay me with your feedback. I would love a testimontial or to hear your comments, suggestions, and criticisms. Even better: if there is a change you'd like to see, clone the GitHub repository, make the changes yourself, and submit a pull request. I will recognize anyone who provides constructive feedback or changes on a special"Contributors" page in the book itself.
About the Author
Table of Contents
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1. Preface
- What You Should Know
- Source Code Examples
- Errors, Omissions, and Contributions
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2. Introduction
- What is TypeScript?
- Defining “JavaScript”
- Writing your first TypeScript function
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3. Getting Started
- Choosing your TypeScript editor
- Installing TypeScript in Visual Studio
- Installing the TypeScript Command Line Interface
- Configuring the TypeScript compiler
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4. ECMAScript 2015 Features
- Optional Parameters
- Template Strings
- Let and const
- For..of Loops
- Arrow Functions
- Destructuring
- The Spread Operator
- Computed Properties
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5. Type Fundamentals
- Introducing JavaScript Types
- Understanding Type Inference
- Specifying JavaScript Types
- Union Types
- Function Overloads
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6. Custom Types
- Defining custom types with Interfaces
- Using interfaces to describe functions
- Extending interface definitions
- Defining constant values with enums
- Anonymous Types
- Using interfaces to dynamically access object properties
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7. Classes
- Understanding Prototypical Inheritance
- Defining a class
- Applying static properties
- Making properties smarter with accessors
- Inheriting behavior from a base class
- Implementing an abstract class
- Controlling visibility with access modifiers
- Implementing interfaces
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8. Generics
- Creating generic functions
- Creating generic classes
- Creating generic constraints
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9. Modules
- Organizing Your Code with Namespaces
- Using namespaces to encapsulate private members
- Understanding the difference between Internal and External Modules
- Switching from internal to external modules
- Importing modules using Require syntax
- Importing modules using ECMAScript 2015 syntax
- Loading External Modules
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10. Real-World Application Development
- Converting existing JavaScript code to TypeScript
- Generating Declaration Files
- Referencing third-party libraries
- Converting to External Modules
- Debugging TypeScript with source maps
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11. Decorators
- Implementing Class Decorators
- Implementing Property Decorators
- Implementing Decorator Factories
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12. Appendix: Syntax Examples
- ECMAScript 6 Features
- Custom Types
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