Webpack

Webpack is an open-source module bundler for JavaScript applications. It analyzes a project's dependencies and combines modules – that is, JavaScript files and, via loaders, also CSS, images and other assets – into optimized bundles that a browser can load efficiently.

Through loaders and plugins, Webpack can be extensively configured, for example for transpilation, code splitting or minification. For a long time it was the de facto standard tool in the frontend build and is still used in many existing projects, even though newer tools such as Vite have come along.