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webpack

Webpack is a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset.

Table of Contents

• Install
• Introduction
• Concepts
• Contributing
• Support
• Current project members
• TSC (Technical Steering Committee)
• Core Collaborators
• Sponsoring
• Premium Partners
• Gold Sponsors
• Silver Sponsors
• Bronze Sponsors
• Backers
• Special Thanks

Install

Install with npm:

npm install --save-dev webpack

Install with yarn:

yarn add webpack --dev

Introduction

Webpack is a bundler for modules. The main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset.

TL;DR

• Bundles ES Modules, CommonJS, and AMD modules (even combined).
• Can create a single bundle or multiple chunks that are asynchronously loaded at runtime (to reduce initial loading time).
• Dependencies are resolved during compilation, reducing the runtime size.
• Loaders can preprocess files while compiling, e.g. TypeScript to JavaScript, Handlebars strings to compiled functions, images to Base64, etc.
• Highly modular plugin system to do whatever else your application requires.

Learn about webpack through videos!

• Understanding Webpack - Video 1
• Understanding Webpack - Video 2

Get Started

Check out webpack's quick Get Started guide and the other guides.

Browser Compatibility

Webpack supports all browsers that are ES5-compliant (IE8 and below are not supported). Webpack also needs Promise for import() and require.ensure(). If you want to support older browsers, you will need to load a polyfill before using these expressions.

Concepts

Plugins

Webpack has a rich plugin interface. Most of the features within webpack itself use this plugin interface. This makes webpack very flexible.

Name	Status	Install Size	Description
mini-css-extract-plugin			Extracts CSS into separate files. It creates a CSS file per JS file which contains CSS.
compression-webpack-plugin			Prepares compressed versions of assets to serve them with Content-Encoding
html-bundler-webpack-plugin			Renders a template (EJS, Handlebars, Pug) with referenced source asset files into HTML.
html-webpack-plugin			Simplifies creation of HTML files (index.html) to serve your bundles
pug-plugin			Renders Pug files to HTML, extracts JS and CSS from sources specified directly in Pug.

Loaders

Webpack enables the use of loaders to preprocess files. This allows you to bundle any static resource way beyond JavaScript. You can easily write your own loaders using Node.js.

Loaders are activated by using loadername! prefixes in require() statements, or are automatically applied via regex from your webpack configuration.

JSON

Name	Status	Install Size	Description
			Loads and transpiles a CSON file

Transpiling

Name	Status	Install Size	Description
			Loads ES2015+ code and transpiles to ES5 using Babel
			Loads TypeScript like JavaScript
			Loads CoffeeScript like JavaScript

Templating

Name	Status	Install Size	Description
			Exports HTML as string, requires references to static resources
			Compiles Pug to a function or HTML string, useful for use with Vue, React, Angular
			Compiles Markdown to HTML
			Loads and transforms a HTML file using PostHTML
			Compiles Handlebars to HTML

Styling

| Name | Status | Install Siz