13 · Environments & Packaging
Bundler
Packs your code for the browser
A tool that takes your many source files and dependencies and packs them into a few optimized files a browser can load fast. Vite and webpack are the common ones.
Concrete example
Vite bundles a React app for production, combining and shrinking everything during the build.
Why it matters
The machinery behind the “build” step for anything that runs in a browser.