As a Senior React Developer, you’re always looking for ways to improve your skills and write better code. One technology that can help you achieve this is TypeScript. TypeScript is a statically typed language that is a superset of JavaScript. It provides developers with advanced features such as type checking, interfaces, and generics, which can help catch errors early on and improve the overall quality of your code.
In this article, we’ll explore some advanced TypeScript techniques that Senior React Developers can use to take their skills to the next level. We’ll cover topics such as Type Guards, Discriminated Unions, Conditional Types, and more.
Type Guards
Type Guards are a way to narrow down the type of a variable or expression within a block of code. They are useful when dealing with complex data structures, where it’s not always clear what the type of a variable is.
For example, let’s say you have an interface for a person that looks like this:
interface Person {
name: string;
age: number;
address?: {
street: string;
city: string;
state: string;
}
}You have a function that takes a person as an argument and needs to check if the person has an address. You can use a Type Guard to narrow…
