Boost frontend performance by using tree shaking to drop unused modules and dead code elimination to strip waste inside used ones, with Webpack/Rollup plus minifiers like Terser and analyzers like Deadcode; combine with code splitting and lean dependencies. ShopSmart cut JS bundles 40%, loading faster and reducing mobile bounces, proving these practices yield lean, scalable apps.
Delivering fast web apps hinges on smaller bundles. This guide explains tree shaking (static analysis to drop unused exports) and dead code elimination (remove unused code inside modules), shows how to enable them with ES6 modules and bundlers like Webpack/Rollup/Parcel plus Terser/UglifyJS/Closure Compiler, outlines best practices, and a ShopEasy case cutting bundles 30% and load times 25%.
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