React Clean Code with Absolute Imports
Tags: javascript, react, cleancode, webdev
Published: 2023-04-10 12:24:30


React is a popular JavaScript library used for building user interfaces. When working with React, you may find yourself importing multiple modules from various files within your project. One way to organize your imports is by using absolute imports. In this article, we will explore the benefits of using absolute imports in React with JavaScript or TypeScript.

## What are absolute imports?

In JavaScript, when you import a module, you specify the path to the file that contains the module you want to import. The path can be a relative path or an absolute path. A relative path starts with one or more dots followed by a forward slash.

Lets take a simple todo application with following folder structure:

```typescript
src/
  components/
    TodoList.tsx
    TodoItem.tsx
  screens/
    TodoScreen.tsx
```

To import the TodoList component in the TodoScreen, you can  import like:

```typescript
import TodoList from '../../components/TodoList';
```

This statement uses a relative path to import the `TodoList` module from the `components` directory. Using relative paths can be error-prone, especially when you have a large project with many nested directories.

To avoid these issues, you can use absolute paths to import modules. An absolute path starts at the root of your project and specifies the path to the module you want to import. Here's an example:

```typescript
import TodoList from 'components/TodoList';
```

This statement uses an absolute path to import the `TodoList` module from the `src/components` directory. Using absolute paths can help you avoid errors and make your code more maintainable.

### How to use absolute imports with TypeScript
If you're using TypeScript with React, you can use the baseUrl and paths options in your `tsconfig.json` file to configure absolute imports. Here's an example:

```json
{
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "src/*": ["src/*"]
    }
  }
}
```


### How to use absolute imports with Javascript
If you're using TypeScript with React, add a `jsconfig.json` file in the root of your project with the following content:
```json
{
  "compilerOptions": {
    "baseUrl": "src"
  },
  "include": ["src"]
}
```

This configuration sets the `baseUrl` to the root of your project and defines a path mapping for `src/*`. This means that you can use absolute imports for files in the `src` directory.

### Benefits of using absolute imports in React.

**1. Simplified imports**

One of the main benefits of using absolute imports in React is that it simplifies your imports. Instead of using complex relative paths to import modules, you can use short and simple absolute paths. This can make your code easier to read and maintain.

For example, consider the following import statement using a relative path:

```typescript
import MyComponent from '../../../components/MyComponent';
```

This statement uses a long and complex relative path to import the MyComponent module. By contrast, using an absolute path, the import statement becomes:

```typescript
import MyComponent from 'src/components/MyComponent';
```
This statement uses a short and simple absolute path to import the MyComponent module.

**2. Avoids file path errors**

When working with relative paths, it's easy to make mistakes and import the wrong file. Absolute paths avoid this issue by specifying the exact location of the file you want to import. This means you can avoid common errors such as importing the wrong file or missing files.


**3. Makes refactoring easier**

Using absolute imports can make refactoring your code easier. When you move files or directories around in your project, you can simply update your import statements with the new absolute path. This can save you time and reduce the risk of introducing errors into your code