How TypeScript Helps You Build Better React Apps

How TypeScript Helps You Build Better React Apps

In which situations should you give React with TypeScript a try, and when is it better to stick to JavaScript? Speaking of my own experience, I walk you through the pros and cons of a TypeScript based frontend.

In which situations should you give React with TypeScript a try, and when is it better to stick to JavaScript?

Speaking of my own experience, I walk you through the pros and cons of a TypeScript based React frontend.

Welcome to the first part of this guide, where I teach how to use React with TypeScript!

In this guide, I want to teach you everything you need to know about using React with TypeScript. Over the next weeks, I'll publish new articles to this guide, so if you want to get notified about my latest content, make sure to subscribe to my newsletter.

In this first article, I want to introduce you to TypeScript and look at the pros and cons of adding it to a React project.

  • What is TypeScript?
  • Advantages of using React with TypeScript
  • Disadvantages of using React with TypeScript
  • Conclusion

What is TypeScript?

[TypeScript] is a strict syntactical superset of JavaScript and adds optional static typing to the language.

The definition is taken from Wikipedia.

The definition above condenses in one sentence what TypeScript is all about.

But let's have a look at what this actually means.

A strict syntactical superset of JavaScript means that TypeScript expands the JavaScript programming language without altering the existing syntax.

TypeScript understands any JavaScript syntax, which means that we can use a combination of JavaScript and TypeScript in our project, making migrating a lot easier.

The second part of the definition states that TypeScript adds optional static typing to the language.

Static typing is the most important advantage of using TypeScript. We can add types to the functions and variables in our application.

Often, TypeScript can infer a variable's type by looking at the value we use to initialize it.

The compiler will throw an error if we try to assign a value of the wrong type to this variable.

let name = '';
name = 123;

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