All 5 Next.js Project Setup & Configuration questions
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How do you create a new Next.js project from scratch? What is the purpose of the next.config.js file in a Next.js project? How is the folder structure organized differently between the App Router and the Pages Router? How do you configure custom path aliases in a Next.js project so you can write cleaner import statements?
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How would you set up a Next.js project to support absolute imports, custom webpack configuration, and multiple environments cleanly?

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Answer

You configure path aliases in your tsconfig.json for absolute imports, extend the webpack configuration function inside next.config.js for any custom build behavior you need, and organize separate environment files for development, staging, and production, keeping your project scalable and maintainable as it grows.
// next.config.js
module.exports = {
  webpack: (config) => {
    config.resolve.alias['@utils'] = path.join(__dirname, 'utils');
    return config;
  }
};
Real-world example A growing startup sets up absolute imports, a small custom webpack tweak for handling special file types, and clean environment separation, keeping their expanding codebase organized and easy for new developers to understand.

Common follow-ups: When would you need to customize the webpack configuration directly instead of using built-in Next.js features?;How do you test that a custom webpack configuration does not break the production build?

Environment Variables & Configuration Management;Turbopack & Build Performance
All 5 Next.js Project Setup & Configuration questions