Bundle Analyzer
ELI5 — The Vibe Check
A bundle analyzer is like an X-ray for your JavaScript suitcase. It shows you exactly which library is hogging all the space so you can shame it publicly and replace it with something lighter. Spoiler: it's usually moment.js.
Real Talk
Bundle analyzers visualize the contents and sizes of your JavaScript bundles as interactive treemaps. Tools like webpack-bundle-analyzer or source-map-explorer help identify bloated dependencies, duplicate modules, and code-splitting opportunities.
When You'll Hear This
"Run the bundle analyzer before the release — I bet lodash is in there three times" / "The analyzer showed that one unused chart library added 400KB"
Related Terms
Code Splitting
Instead of sending the user one massive JavaScript file for your entire app, code splitting lets you break it into chunks and only send what's needed for t...
Performance Budget
A performance budget is like a calorie limit for your website.
Tree Shaking
Tree shaking is when your bundler looks at all the code you imported but never actually used, and throws it in the trash.