How to Bundle Multiple Entry Points With Webpack?

10 minutes read

With Webpack, you can bundle multiple entry points by specifying an object in your webpack configuration file. Each key in the object represents a separate entry point, and the corresponding value is the file path to the entry point.


For example, if you have two entry points named 'app' and 'admin', you can define them in your webpack configuration file like this:

1
2
3
4
entry: {
  app: './src/app.js',
  admin: './src/admin.js'
}


Webpack will then bundle both entry points into separate output files based on the keys specified in the configuration. You can also use placeholders like '[name]' to create dynamic output file names for each entry point.


By utilizing this approach, you can easily bundle multiple entry points in a single webpack build while maintaining separate output files for each entry point. This can be useful when working on large projects with multiple distinct sections that require separate entry points and bundles.

Best Javascript Books to Read in April 2024

1
JavaScript: The Definitive Guide: Master the World's Most-Used Programming Language

Rating is 5 out of 5

JavaScript: The Definitive Guide: Master the World's Most-Used Programming Language

2
JavaScript from Beginner to Professional: Learn JavaScript quickly by building fun, interactive, and dynamic web apps, games, and pages

Rating is 4.9 out of 5

JavaScript from Beginner to Professional: Learn JavaScript quickly by building fun, interactive, and dynamic web apps, games, and pages

3
JavaScript Crash Course: A Hands-On, Project-Based Introduction to Programming

Rating is 4.8 out of 5

JavaScript Crash Course: A Hands-On, Project-Based Introduction to Programming

4
Eloquent JavaScript, 3rd Edition: A Modern Introduction to Programming

Rating is 4.7 out of 5

Eloquent JavaScript, 3rd Edition: A Modern Introduction to Programming

  • It can be a gift option
  • Comes with secure packaging
  • It is made up of premium quality material.
5
JavaScript All-in-One For Dummies

Rating is 4.6 out of 5

JavaScript All-in-One For Dummies

6
Learning JavaScript Design Patterns: A JavaScript and React Developer's Guide

Rating is 4.5 out of 5

Learning JavaScript Design Patterns: A JavaScript and React Developer's Guide

7
JavaScript and jQuery: Interactive Front-End Web Development

Rating is 4.4 out of 5

JavaScript and jQuery: Interactive Front-End Web Development

  • JavaScript Jquery
  • Introduces core programming concepts in JavaScript and jQuery
  • Uses clear descriptions, inspiring examples, and easy-to-follow diagrams
8
Web Design with HTML, CSS, JavaScript and jQuery Set

Rating is 4.3 out of 5

Web Design with HTML, CSS, JavaScript and jQuery Set

  • Brand: Wiley
  • Set of 2 Volumes
  • A handy two-book set that uniquely combines related technologies Highly visual format and accessible language makes these books highly effective learning tools Perfect for beginning web designers and front-end developers
9
Head First JavaScript Programming: A Brain-Friendly Guide

Rating is 4.2 out of 5

Head First JavaScript Programming: A Brain-Friendly Guide

10
Murach's Modern JavaScript: Beginner to Pro

Rating is 4.1 out of 5

Murach's Modern JavaScript: Beginner to Pro


How to implement lazy loading for multiple entry points in webpack?

To implement lazy loading for multiple entry points in webpack, you can follow these steps:

  1. Define multiple entry points in your webpack configuration file. For example:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
module.exports = {
  entry: {
    main: './src/main.js',
    dashboard: './src/dashboard.js',
    profile: './src/profile.js',
  },
  output: {
    filename: '[name].bundle.js',
    path: __dirname + '/dist',
  },
};


  1. Install the @babel/plugin-syntax-dynamic-import plugin to enable dynamic imports:
1
npm install --save-dev @babel/plugin-syntax-dynamic-import


  1. Update your .babelrc file to include the plugin:
1
2
3
{
  "plugins": ["@babel/plugin-syntax-dynamic-import"]
}


  1. Update your entry point files to use dynamic imports to lazily load modules. For example, in main.js:
1
2
3
4
5
6
7
8
9
const button = document.createElement('button');
button.innerText = 'Load Dashboard';
button.onclick = () => {
  import('./dashboard').then(module => {
    module.default();
  });
};

document.body.appendChild(button);


  1. Build your project using webpack:
1
npx webpack


Now, when the user clicks on the 'Load Dashboard' button, the dashboard module will be lazily loaded. Repeat the same process for other entry points as needed.


How to manage code splitting for multiple entry points in webpack?

To manage code splitting for multiple entry points in Webpack, you can use the optimization.splitChunks configuration option. This option allows you to specify how and when to split your code into separate chunks.


Here are the steps to manage code splitting for multiple entry points in Webpack:

  1. Define multiple entry points in your Webpack configuration:
1
2
3
4
5
6
7
module.exports = {
  entry: {
    app1: './src/app1.js',
    app2: './src/app2.js'
  },
  // other configuration options
};


  1. Configure code splitting using the optimization.splitChunks option in your Webpack configuration:
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
module.exports = {
  optimization: {
    splitChunks: {
      cacheGroups: {
        commons: {
          test: /[\\/]node_modules[\\/]/,
          name: 'vendor',
          chunks: 'all'
        }
      }
    }
  },
  // other configuration options
};


In this example, the splitChunks configuration creates a separate chunk for third-party dependencies located in the node_modules folder.

  1. Use dynamic imports to split code within your entry points:
1
2
3
4
5
6
7
8
9
// app1.js
import('./module1').then(module => {
  // Module 1 loaded
});

// app2.js
import('./module2').then(module => {
  // Module 2 loaded
});


By using dynamic imports, you can split your code into separate chunks based on how it is imported within your entry points.

  1. Build your project using Webpack:
1
webpack --config webpack.config.js


Webpack will automatically split your code into separate chunks based on the configuration options provided, resulting in optimized and efficient bundles for each entry point in your project.


What is the entry key in webpack configuration?

The entry key in webpack configuration is used to specify the entry point of the application, where webpack will start building the dependency graph. It typically points to the main JavaScript file of the application. For example:

1
2
3
4
module.exports = {
  entry: './src/index.js',
  // Other webpack configuration...
}


In this example, './src/index.js' is the entry point of the application.

Facebook Twitter LinkedIn Telegram Whatsapp Pocket

Related Posts:

With webpack, you can bundle JavaScript files by configuring the entry point for your application, specifying output settings, and utilizing loaders to handle different types of files (such as CSS and images). You can create a webpack configuration file where ...
To set up webpack to work with React, you need to first install webpack and webpack-cli by running npm install webpack webpack-cli --save-dev in your project directory. Then, you need to create a webpack configuration file (webpack.config.js) where you specify...
To require .css and .js files inside an HTML file using webpack, you can use the style-loader and css-loader plugins for CSS files, and the script-loader for JavaScript files. These plugins will help webpack bundle and process these files correctly before incl...