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Module bundler
A module bundler is a software development tool that takes multiple source files and their dependencies (modules) and combines them into one or more output files called bundles. Module bundlers are commonly used in front-end web development to package JavaScript, CSS and other assets for efficient delivery to web browsers.12
Module bundlers typically start from one or more entry points and build a dependency graph of all imported modules before producing the final bundles, often applying optimisations such as minification and tree shaking.2
Printed 2026-07-05.
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