How to set up a new Next.js project
Create a new Next.js application with the `create-next-app` CLI, and set up TypeScript, ESLint, and Module Path Aliases.
System requirements
- Node.js 18.18 or later.
- macOS, Windows (including WSL), and Linux are supported.
Automatic installation
We recommend starting a new Next.js app using create-next-app, which sets up everything automatically for you. To create a project, run:
On installation, you'll see the following prompts:
After the prompts, create-next-app will create a folder with your project name and install the required dependencies.
Manual installation
To manually create a new Next.js app, install the required packages:
Open your package.json file and add the following scripts:
These scripts refer to the different stages of developing an application:
dev: runsnext devto start Next.js in development mode.build: runsnext buildto build the application for production usage.start: runsnext startto start a Next.js production server.lint: runsnext lintto set up Next.js' built-in ESLint configuration.
Create the pages directory
Next.js uses file-system routing, which means the routes in your application are determined by how you structure your files.
Create a pages directory at the root of your project. Then, add an index.tsx file inside your pages folder. This will be your home page (/):
Next, add an _app.tsx file inside pages/ to define the global layout. Learn more about the custom App file.
Finally, add a _document.tsx file inside pages/ to control the initial response from the server. Learn more about the custom Document file.
Create the public folder (optional)
You can optionally create a public folder at the root of your project to store static assets such as images, fonts, etc. Files inside public can then be referenced by your code starting from the base URL (/).
Run the development server
- Run
npm run devto start the development server. - Visit
http://localhost:3000to view your application. - Edit the
pages/index.tsxfile and save it to see the updated result in your browser.
Set up TypeScript
Minimum TypeScript version: v4.5.2
Next.js comes with built-in TypeScript support. To add TypeScript to your project, rename a file to .ts / .tsx. Run next dev, Next.js will automatically install the necessary dependencies and add a tsconfig.json file with the recommended config options.
See the TypeScript configuration page for more information on how to use TypeScript in your project.
Set up ESLint
Next.js comes with built-in ESLint, automatically installing the necessary packages and configuring the proper settings when you create a new project with create-next-app.
To add ESLint to an existing project, add next lint as a script to package.json:
Then, run npm run lint and you will be guided through the installation and configuration process.
You'll see a prompt like this:
? How would you like to configure ESLint?
❯ Strict (recommended)
Base
Cancel
- Strict: Includes Next.js' base ESLint configuration along with a stricter Core Web Vitals rule-set. This is the recommended configuration for developers setting up ESLint for the first time.
- Base: Includes Next.js' base ESLint configuration.
- Cancel: Does not include any ESLint configuration. Only select this option if you plan on setting up your own custom ESLint configuration.
If either of the two configuration options are selected, Next.js will automatically install eslint and eslint-config-next as dependencies in your application and create an .eslintrc.json file in the root of your project that includes your selected configuration.
You can now run next lint every time you want to run ESLint to catch errors. Once ESLint has been set up, it will also automatically run during every build (next build). Errors will fail the build, while warnings will not.
See the ESLint Plugin page for more information on how to configure ESLint in your project.
Set up Absolute Imports and Module Path Aliases
Next.js has in-built support for the "paths" and "baseUrl" options of tsconfig.json and jsconfig.json files. These options allow you to alias project directories to absolute paths, making it easier to import modules. For example:
To configure absolute imports, add the baseUrl configuration option to your tsconfig.json or jsconfig.json file. For example:
In addition to configuring the baseUrl path, you can use the "paths" option to "alias" module paths.
For example, the following configuration maps @/components/* to components/*:
Each of the "paths" are relative to the baseUrl location. For example: