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Frontend Glossary

Frontend engineering · Toolchain

Bundle

Also called: Build artifact, JS bundle, Packaged output

The minified, packaged files your build tool emits—what browsers actually download and run.

In detail

You author modular source; production runs bundles (and split chunks). Their size, count, and caching drive load time.

Use a bundle analyzer to see what ate 300KB. Fix with tree shaking, code splitting, lighter deps, compression, and CDN caching.

Fast local dev doesn't prove a healthy production artifact—measure the production build.

Developer info
Term ID
eng-bundle
DOM selectors
No DOM cues. This concept isn't detected directly on a page.
Priority
1 · when several match at the same level, the higher priority wins
Version
v1 · updated Oct 5, 2026