5 Tips for Writing More Efficient React Code with Typescript

Asim Zaidi
4 min readJun 29

React is an incredibly powerful and popular JavaScript library for building user interfaces. It allows developers to create complex web and mobile applications with a simple and intuitive API. Typescript is a superset of JavaScript that adds static type-checking and type annotations to the language. When used together, React and TypeScript can provide developers with a powerful and efficient development workflow.

In this article, we’ll explore five tips for writing more efficient React code with TypeScript. We’ll look at how to get familiar with TypeScript syntax, how to take advantage of TypeScript’s static type-checking, how to use TypeScript interfaces, how to utilize TypeScript generics, and how to leverage TypeScript’s advanced type system.

Tip #1: Get Familiar with TypeScript Syntax

Before you can start writing efficient React code with TypeScript, you need to get familiar with the TypeScript syntax. TypeScript is a superset of JavaScript, so if you’re already familiar with JavaScript, you’ll be able to pick up TypeScript quickly.

The first step is to learn the basic types in TypeScript. TypeScript supports the same basic types as JavaScript (string, number, boolean, null, undefined, and symbol). In addition, TypeScript also supports arrays, tuples, enums, and any.

The next step is to learn how to use type annotations. Type annotations allow you to add type information to variables, parameters, and function return values. For example, if you want to declare a variable of type string, you can use the following syntax:

let myString: string;

You can also use type annotations for function parameters and return values. For example, you can write a function that takes two strings as parameters and returns a string like this:

function concat(str1: string, str2: string): string { 
return str1 + str2;

Finally, you should learn how to use classes in TypeScript. Classes allow you to create objects with properties and methods. For example, you can create a Person class like this:

class Person { 
name: string;
age: number;

constructor(name: string, age
Asim Zaidi

Building AI Hub @Apple | Prev: SSWE @Atlassian | Co-Founder | Shipping products users love | Helping people break into tech @