React is allowing developers to iterate faster and build safer, more reliable frontend applications than we were building many years ago. TypeScript , a relatively new addition to the “JavaScript Alternatives” scene, also aims to add a new level of safety in the form of type safety. Naturall...
Below are a few ways TypeScript is beneficial with React:Static typingTypeScript provides static typing to JavaScript, which allows developers to define types for states and variables. This helps catch any errors during development, making the code more readable and easy to maintain....
Although I default to writing functional components, some cases require me to work with class components as well. Let's jump right into it and have a look at the previous example as a class component in TypeScript. importReact,{Component}from'react';interfaceTitleProps{title:string;subtitle?:...
Setup Typescript in a New Create-React-App To preconfigure Typescript, create an empty React project using the --typescript flag. Run the following command: npx create-react-app react-typescript-app --typescript You will notice that Create-React-App creates all files with a .tsx extensio...
Using TypeScript Generics, we can pass and combine our Custom Element class XClass to the React DOMAttributes. This will add the React event types like onClick to our element. Now, if we look at our element, we should see the following, Our component does not recognize the closeChange ev...
Using React with TypeScript makes React, a popular JavaScript library for building user interfaces, even more powerful. We'll walk you through the steps of setting up your first React application with TypeScript, covering essential topics like project structure and configuration. Let's get started...
Nothing changes from Vanilla React to TypeScript, but things are different once we want the onClick function to be passed as a prop of the Message component. To show this, we will create another component called Game that will have Message as its child. function Game() { return ( <div>...
Now that our component is statically typed, it is no longer possible to accidentally mistype a name of one of our props or state members, nor can you try to assign it a value that does not match the member’s type. What’s great about Typescript is that you can catch these errors ri...
Here is an example of howuseStatecan be used for primitive types in TypeScript. constInfoComponent=()=>{const[name,setName]=React.useState<string>("");const[age,setAge]=React.useState<number>(0);const[isMarried,setIsMarried]=React.useState<boolean>(false);React.useEffect(()=>{setName("...
TypeScript import{useRequest}from'./request-hook';exportconstDataDisplayPage:React.FC=()=>{const[isLoading,data]=useRequest(getData);return({isLoading?("Spinner"):!data?("DisplayError"):(data)});}; If you are unfamiliar with a ternary operator, the code inside the return statement, here ...