Web Performance · Part 8 — JavaScript Performance & Bundle
Client JavaScript is often costly because it must download, parse, compile, and execute. Measure bundles, split by route/component, tree-shake, lazy-load, and trim dependencies.
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Webpack · Part 6 — Code Splitting & Lazy Loading
Stop shipping one giant bundle: dynamic import() for route-level lazy loading, splitChunks for vendor and shared code, runtimeChunk, and magic comments for naming and prefetching. With an interactive code-splitting visualizer.