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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. 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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Summary

In this chapter, we've walked through how to utilize declaration files in TypeScript. We've analyzed how declaration files can assist the IDE in guiding how programs should be structured. We've seen examples of structuring the declaration files. Importing declaration files into TypeScript files assists in the development life cycle. We learned to assign objects to custom types that were defined in the declaration files. It injects typed guidance into the IDE's IntelliSense process. We also learned about DefinitelyTyped and how it can be leveraged to layer on types for third-party libraries and work with them like typed programs.

With all this knowledge of declaration files, in the next chapter, we'll be taking a deep dive into working with functions in TypeScript. We'll be defining a function using types, building a suite of functions in a module, building a class of functions to perform a specific task, and exploring unit testing.

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