Building a Todo List App with Vite, React, and TypeScript

In this tutorial, we will walk through the process of creating a simple Todo List application using Vite, React, and TypeScript. This combination offers a fast, modern, and type-safe development experience.

Step 1: Setting Up the Project

First, we need to create a new project using Vite with React and TypeScript. Open your terminal and run:

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

Navigate into your project directory:

cd my-todo-app

Step 2: Understanding the Project Structure

Vite sets up a basic project structure for you. Key folders and files include:

• src/: Where your React components and TypeScript files will reside.
• index.html: The entry point of your app.
• vite.config.ts: Configuration file for Vite.

Step 3: Creating the Todo List Components

Inside the src/ directory, create two files: App.tsx and TodoList.tsx.

App Component (App.tsx)

import React, { useState } from 'react';
import TodoList from './TodoList';

function App() {
  const [todos, setTodos] = useState<string[]>([]);
  const [input, setInput] = useState('');

  const addTodo = () => {
    setTodos([...todos, input]);
    setInput('');
  };

  return (
    <div>
    <input value= { input } onChange = {(e) => setInput(e.target.value)
} />
  < button onClick = { addTodo } > Add Todo < /button>
    < TodoList items = { todos } />
      </div>
  );
}

export default App;

TodoList Component (TodoList.tsx)

import React from 'react';

interface TodoListProps {
  items: string[];
}

const TodoList: React.FC<TodoListProps> = ({ items }) => {
  return (
    <ul>
    {
      items.map((item, index) => (
        <li key= { index } > { item } < /li>
      ))
    }
    < /ul>
  );
};

export default TodoList;

Step 4: Running the Application

Start your development server:

npm run dev

Your app will be available at http://localhost:3000.

Conclusion

You have now created a basic Todo List application using Vite, React, and TypeScript. This setup provides a fast development server, React for UI, and TypeScript for type safety.

Happy coding!