Webpack is a
free and open-source
Free and open-source software (FOSS) is software available under a Software license, license that grants users the right to use, modify, and distribute the software modified or not to everyone free of charge. FOSS is an inclusive umbrella term ...
module bundler for
JavaScript
JavaScript (), often abbreviated as JS, is a programming language and core technology of the World Wide Web, alongside HTML and CSS. Ninety-nine percent of websites use JavaScript on the client side for webpage behavior.
Web browsers have ...
. It is made primarily for JavaScript, but it can transform front-end assets such as HTML, CSS, and images if the corresponding loaders are included. Webpack takes modules with dependencies and generates static assets representing those modules.
Webpack takes the dependencies and generates a
dependency graph allowing web developers to use a modular approach for their web application development purposes. It can be used from the command line or can be configured using a configuration file which is named ''webpack.config.js''. This file defines rules, plugins, etc., for a project. (Webpack is highly extensible via rules which allow developers to write custom tasks that they want to perform when bundling files together.)
Node.js is required to use Webpack.
Webpack provides
code on demand using the moniker ''code splitting''. Two similar techniques are supported by Webpack when it comes to dynamic code splitting. The first and recommended approach is to use the ''import()'' syntax that conforms to the
ECMAScript
ECMAScript (; ES) is a standard for scripting languages, including JavaScript, JScript, and ActionScript. It is best known as a JavaScript standard intended to ensure the interoperability of web pages across different web browsers. It is stan ...
proposal for dynamic imports. The legacy, Webpack-specific approach is to use ''require.ensure''.
Webpack development server
Webpack also provides a built-in development server, ''webpack-dev-server'', that can be used as an HTTP server for serving files while developing. It also provides the capability to use hot module replacement (HMR), which updates code on a webpage without requiring the developer to reload the page.
See also
*
Browserify
*
Vite
*
Grunt (software)
*
Gulp.js
*
JavaScript framework
References
External links
*
{{JavaScript
2012 software
JavaScript programming tools
Software using the MIT license