webpack At its core, webpack is a static module bundler for modern JavaScript applications. When webpack processes your application, it internally builds a dependency graph which maps every module your project needs and generates one or more bundles . Since version 4.0.0, webpack does not require a configuration file to bundle your project. Nevertheless, it is incredibly configurable to better fit your needs. To get started you only need to understand its Core Concepts : Entry Output Loaders Plugins Mode Browser Compatibility This document is intended to give a high-level overview of these concepts, while providing links to detailed concept-specific use cases. For a better understanding of the ideas behind module bundlers and how they work under the hood, consult these resources: Manually Bundling an Application Live Coding a Simple Modul