Project Structure

When inspecting the project structure, you will find something similar to the below:

tasks-app
├── README.md
├── @types
├── src
│   ├── components
│   ├── core
│   ├── lib
│   └── pages
        └── _document.tsx
        └── _app.tsx
│       └── index.tsx
├── package-lock.json
├── package.json
├── public
│   └── favicon.ico
├── next.config.mjs
└── tsconfig.json

NB: we omitted a lot of the files for simplicity.

Let's take a deeper look at the structure we see above:

• src/core: this folder contains reusable building blocks of the template that are not related to any domain. This includes components, React hooks, functions, and so on.
• src/components: this folder contains the application's components, including those that belong to your application's domain. For example, we can add the tasks components to src/components/tasks.
• src/lib: this folder contains the business logic of your application's domain. For example, we can add the tasks hooks to write and fetch data from Firestore in src/lib/tasks.
• src/pages: this is Next.js's special folder where we add our application routes.

Don't worry if this isn't clear yet! We'll explain where we place our files in the sections ahead.