Setting Up a Next.js Project with TypeScript

As a web developer, you’re likely familiar with the power of combining Next.js and TypeScript. Next.js offers server-side rendering (SSR), static site generation (SSG) and an excellent development experience over all, TypeScript in the other hand provides strong type checking and improves code maintainability. In this guide we’ll walk though the process of setting up a Next.js project with TypeScript.

Step 1: Create a Next.js Project

To get started, let's create a new Next.js project. Open your terminal and enter the following command:

npx create-next-app@12 my-app

Replace my-app with your preferred project name.

Step 2: Add TypeScript Dependencies

Navigate to your project directory using the terminal:

cd my-app

Then, install TypeScript and the necessary type declarations:

npm install --save-dev typescript @types/react @types/node

Step 3: Configure TypeScript

Create a tsconfig.json file in your project's root directory. This file will configure TypeScript for your Next.js project:

  "compilerOptions": {
    "target": "ESNext",
    "module": "ESNext",
    "strict": true,
    "jsx": "preserve",
    "esModuleInterop": true,
    "skipLibCheck": true,
    "forceConsistentCasingInFileNames": true,
    "resolveJsonModule": true,
    "isolatedModules": true,
    "noEmit": true,
    "incremental": true,
    "types": ["node", "react"]
  "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
  "exclude": ["node_modules"]

Step 4: Rename Files to .tsx Extension

Rename your .js files within the pages directory to use the .tsx extension. For example, if you have an index.js file in the pages directory, rename it to index.tsx.

Step 5: Start the Development Server

With everything set up, you can now start the Next.js development server:

npm run dev

Congratulations 🥳 At this point your Next.js project is now running with TypeScript!

Step 6: Utilize TypeScript in Pages and Components

As you build your Next.js pages and components, make the most of TypeScript's type checking capabilities. Define TypeScript types and interfaces to specify prop types and other data structures.

Optional: TypeScript ESLint Configuration

If you're using ESLint, integrate TypeScript linting into your project. Install relevant packages and configure your .eslintrc file as needed.

module.exports = {
  parser: '@typescript-eslint/parser',
  plugins: ['@typescript-eslint'],
  extends: [

  settings: {
    react: {
      version: 'detect',

  rules: {
    // Your custom rules here