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# Webpack and bundlers

Learn how to include Bootstrap in your project using Webpack or other bundlers.

## Installing Bootstrap

Install bootstrap as a Node.js module using npm.

## Importing JavaScript

Import Bootstrap’s JavaScript by adding this line to your app’s entry point (usually `index.js` or `app.js`):

    // You can specify which plugins you need
    import { Tooltip, Toast, Popover } from 'bootstrap';

Alternatively, if you only need just a few of our plugins, you may import plugins individually as needed:

    import Alert from 'bootstrap/js/dist/alert';
    ...

Bootstrap depends on Popper, which is specified in the `peerDependencies` property. This means that you will have to make sure to add it to your `package.json` using `npm install @popperjs/core`.

## Importing Styles

### Importing Precompiled Sass

To enjoy the full potential of Bootstrap and customize it to your needs, use the source files as a part of your project’s bundling process.

First, create your own `_custom.scss` and use it to override the built-in custom variables. Then, use your main Sass file to import your custom variables, followed by Bootstrap:

    @import "custom";
    @import "~bootstrap/scss/bootstrap";

For Bootstrap to compile, make sure you install and use the required loaders: sass-loader, postcss-loader with Autoprefixer. With minimal setup, your webpack config should include this rule or similar:

    // ...
    {
      test: /\.(scss)$/,
      use: [{
        // inject CSS to page
        loader: 'style-loader'
      }, {
        // translates CSS into CommonJS modules
        loader: 'css-loader'
      }, {
        // Run postcss actions
        loader: 'postcss-loader',
        options: {
          // `postcssOptions` is needed for postcss 8.x;
          // if you use postcss 7.x skip the key
          postcssOptions: {
            // postcss plugins, can be exported to postcss.config.js
            plugins: function () {
              return [
                require('autoprefixer')
              ];
            }
          }
        }
      }, {
        // compiles Sass to CSS
        loader: 'sass-loader'
      }]
    }
    // ...

### Importing Compiled CSS

Alternatively, you may use Bootstrap’s ready-to-use CSS by simply adding this line to your project’s entry point:

    import 'bootstrap/dist/css/bootstrap.min.css';

In this case you may use your existing rule for `css` without any special modifications to webpack config, except you don’t need `sass-loader` just style-loader and css-loader.

    // ...
    module: {
      rules: [
        {
          test: /\.css$/,
          use: [
            'style-loader',
            'css-loader'
          ]
        }
      ]
    }
    // ...