How to Use TypeScript with Vite?

Vite is a modern build tool known for its speed and efficiency. Using TypeScript with Vite combines Vite's fast development experience with TypeScript's strong static typing, enabling early error detection and more maintainable code. This integration enhances productivity and code quality in modern web development.

Prerequisites

• Nodejs
• TypeScript

Approach

We have discussed below how to use TypeScript with Vite, we make sure that Nodejs is installed in our system or not if not then we will install that first, which will create a new Vite project using the terminal writing the command after that we will select the TypeScript framework then select the variant then the last step is to install all the dependencies.

Steps to Use TypeScript with Vite

Step 1: Install NodeJs, If you haven’t installed NodeJs, download it from the official website.

Step 2: Create a new Vite Project

npm create vite@latest my-react-app --template react-ts

Step 3: Select a framework: select the React framework here using the downward arrow key.

Vanilla
Vue
React
Preact
Lit
Svelte
Solid
Qwik
Others

Step 4: Select Variant: choose any variant of your choice using the downward arrow key,i.e: choose TypeScript

TypeScript
TypeScript + SWC
JavaScript
JavaScript + SWC

Step 5: Now, switch to my-react-app directory

cd my-react-app

Step 6: Install Dependencies

npm install

package.json:

"dependencies": {
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  }

Step 7: Start Server, make sure check your port no on the terminal it may be different for you system.

  ➜  Local:   http://localhost:5173/

Project Structure:

Example: We are using TypeScript with Vite to create a React component that shows handling arrays and objects with type safety. The App component displays a list of hobbies and a list of people, each with specified types, using TypeScript interfaces and array methods to render the content dynamically.

/** App.css **/
#root {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
}

.logo {
  height: 6em;
  padding: 1.5em;
  will-change: filter;
  transition: filter 300ms;
}
.logo:hover {
  filter: drop-shadow(0 0 2em #646cffaa);
}
.logo.react:hover {
  filter: drop-shadow(0 0 2em #61dafbaa);
}

@keyframes logo-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@media (prefers-reduced-motion: no-preference) {
  a:nth-of-type(2) .logo {
    animation: logo-spin infinite 20s linear;
  }
}

.card {
  padding: 2em;
}

.read-the-docs {
  color: #888;
}

// App.tsx
import React from "react";
interface Person {
  name: string;
  age: number;
}
const App: React.FC = () => {
  const hobbies: string[] = ["Reading", "Coding", "Hiking"];
  const people: Person[] = [
    { name: "Gaurav", age: 30 },
    { name: "Suresh", age: 25 },
    { name: "Mahesh", age: 35 },
  ];
  return (
    <div style={{ padding: "20px", fontFamily: "Arial, sans-serif" }}>
      <h1 style={{ color: "green" }}>GeeksforGeeks</h1>
      <h3>TypeScript with Vite</h3>

      <h2>Hobbies:</h2>
      <ul>
        {hobbies.map((hobby, index) => (
          <li key={index}>{hobby}</li>
        ))}
      </ul>
      <h2>People:</h2>
      <ul>
        {people.map((person, index) => (
          <li key={index}>
            {person.name} - {person.age} years old
          </li>
        ))}
      </ul>
    </div>
  );
};
export default App;

Output: To run the application use npm run dev into the terminal.