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The TypeScript Workshop

The TypeScript Workshop

By : Ben Grynhaus , Jordan Hudgens , Rayon Hunte , Matt Morgan , Wekoslav Stefanovski
4.7 (19)
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The TypeScript Workshop

The TypeScript Workshop

4.7 (19)
By: Ben Grynhaus , Jordan Hudgens , Rayon Hunte , Matt Morgan , Wekoslav Stefanovski

Overview of this book

By learning TypeScript, you can start writing cleaner, more readable code that’s easier to understand and less likely to contain bugs. What’s not to like? It’s certainly an appealing prospect, but learning a new language can be challenging, and it’s not always easy to know where to begin. This book is the perfect place to start. It provides the ideal platform for JavaScript programmers to practice writing eloquent, productive TypeScript code. Unlike many theory-heavy books, The TypeScript Workshop balances clear explanations with opportunities for hands-on practice. You’ll quickly be up and running building functional websites, without having to wade through pages and pages of history and dull, dry fluff. Guided exercises clearly demonstrate how key concepts are used in the real world, and each chapter is rounded off with an activity that challenges you to apply your new knowledge in the context of a realistic scenario. Whether you’re a hobbyist eager to get cracking on your next project, or a professional developer looking to unlock your next promotion, pick up a copy and make a start! Whatever your motivation, by the end of this book, you’ll have the confidence and understanding to make it happen with TypeScript.
Table of Contents (16 chapters)
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Preface
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2
2. Declaration Files
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5. Interfaces and Inheritance
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6. Advanced Types
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8. Dependency Injection in TypeScript
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9. Generics and Conditional Types
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11. Higher-Order Functions and Callbacks
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JSX and TSX

JSX is another innovation from Facebook. It refers to JavaScript enhanced with XML and practically it is JavaScript with HTML templates embedded into it. The following is an example of its use:

render() {
  return <div>Hello {this.props.name}</div>;
}

This is a function that returns an HTML template. We must use JSX to do this. Normally, this would result in a syntax error as this is not a quoted string nor is it any recognizable object or syntax in TypeScript. JSX allows us to mix our HTML templating in with our code. Some earlier view libraries would use one file for source code and another for templating. This was often confusing to programmers as they needed to flip back and forth between the two.

It is possible to write React without using JSX but that is rarely done and won't be covered in this book. Some other languages, such as Vue, use JSX as well.

When we want to write TypeScript in JSX, we use the .tsx file extension instead...

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