Webpack#Webpack Dev Server

{{short description|Open-source JavaScript module bundler}}

{{Infobox software

| name = Webpack

| logo = Webpack.svg

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| developer = Tobias Koppers, Sean Larkin, Johannes Ewald, Juho Vepsäläinen, Kees Kluskens, Even Stensberg and Webpack contributors

| released = {{Start date and age|2014|02|19|df=yes}}{{cite web | url=https://libraries.io/npm/webpack/versions | access-date=2020-12-31 | title=Release Date of Version 1.0.0}}

| ver layout = simple

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| latest release version = {{Wikidata|property|edit|reference|P348}}

| latest release date = {{Start date and age|{{Wikidata|qualifier|P348|P577}}|df=yes}}

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| repo = {{URL|https://github.com/webpack/webpack}}

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| programming language = JavaScript

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| operating system = Linux, macOS, Windows

| platform = Node.js

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| license = MIT License{{cite web | url=https://github.com/webpack/webpack/blob/master/LICENSE | title=LICENSE file on GitHub | access-date=2020-12-31}}{{cite web | url=https://www.npmjs.com/package/webpack | title=License field from webpack - npm | access-date=2020-12-31}}

| website = {{Official URL}}

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Webpack is a free and open-source module bundler for JavaScript.{{Cite web|url=https://developers.google.com/web/fundamentals/performance/webpack/|title=Web Performance Optimization with webpack|publisher=Google Inc.|access-date=16 Oct 2018}}{{Cite web|url=https://www.sitepoint.com/beginners-guide-webpack-module-bundling/|title=A Beginner's Guide to webpack 4 and Module Bundling|publisher=SitePoint|access-date=16 Oct 2018}}{{Cite news|url=https://www.infoq.com/news/2018/02/webpack-4-0-brings-simplified|title=Webpack 4.0 Release Brings Simplified Configuration, WebAssembly Support, and Big Performance Boost|publisher=InfoQ|access-date=16 Oct 2018}}{{Cite web|url=https://www.codementor.io/drewpowers/high-performance-webpack-config-for-front-end-delivery-90sqic1qa|title=High-performance webpack config for front-end delivery|publisher=Codementor|access-date=16 Oct 2018}} 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.{{Cite web|url=https://survivejs.com/webpack/what-is-webpack/|title=What is webpack|publisher=SurviveJS|access-date=16 Oct 2018}} Webpack takes modules with dependencies and generates static assets representing those modules.{{cite web |url=https://github.com/webpack/docs/wiki/what-is-webpack |title=What is webpack |publisher=GitHub |access-date=25 Feb 2018}}

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 proposal for dynamic imports. The legacy, Webpack-specific approach is to use require.ensure.{{cite web |url=https://webpack.js.org/guides/code-splitting/#dynamic-imports |title=Dynamic imports |publisher=webpack |access-date=6 Jun 2022}}