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  • Book Overview & Buying Typescript essentials
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Typescript essentials

Typescript essentials

By : Christopher Nance
4 (4)
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Typescript essentials

Typescript essentials

4 (4)
By: Christopher Nance
Buy this Book

Overview of this book

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.
Table of Contents (10 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Getting Started with TypeScript
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1. Getting Started with TypeScript
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The advantages of TypeScript
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Setting up the IDE
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Hello World
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Summary
2
2. TypeScript Basics
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2. TypeScript Basics
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Types
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Functions
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Interfaces
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Classes
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Interfaces
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Enums
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Modules
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Generic objects
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Summary
3
3. The TypeScript Compiler
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3. The TypeScript Compiler
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Generation of ECMAScript
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Controlling compiler output
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Advanced options
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Summary
4
4. Object-oriented Programming with TypeScript
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4. Object-oriented Programming with TypeScript
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The basics
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Understanding inheritance
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Encapsulation
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Abstraction
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Polymorphism
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References
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Summary
5
5. Creating a Simple Drawing Application
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5. Creating a Simple Drawing Application
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Setting up the project
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The shapes
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Making the application interactive
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Summary
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6. Declaration Files and Library Integrations
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6. Declaration Files and Library Integrations
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Declaration files
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Third-party library integration
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Summary
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7. Enhancing the Drawing Application
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7. Enhancing the Drawing Application
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Converting to AMD modules
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Binding the user controls
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Generating a single output file
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Styling the application
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Summary
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8. Debugging TypeScript
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8. Debugging TypeScript
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Debugging
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Test-driven development
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Summary
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Index
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Index

Generation of ECMAScript

As with most programming languages, ECMAScript has evolved over time. It was initially developed in the mid-nineties for use in client-side scripting. The current standard is ECMAScript 5; however, Version 6 is currently being worked on. The TypeScript compiler provides a list of options to change the way your code is generated. In this section, we will look at these options and compare the results.

ECMAScript version

Writing JavaScript code means your code must be portable across multiple types of client devices and browsers. You may be forced to not only support the latest version of a browser but potentially any of its previous versions. For this reason, the compiler supports compiling your TypeScript code into different versions of ECMAScript. ECMAScript 3 was a widely adopted and heavily used standard and has survived in many legacy browsers. ECMAScript 4 was abandoned when the group responsible for creating the standard could not agree on the language features...

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