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Chrome DevTools Performance panel reveals JavaScript bottlenecks through flame charts, long task detection, and paint correlation. Learn to diagnose runtime issues and apply targeted optimizations.
Astro's client:only directive keeps heavy interactive components out of the initial JavaScript bundle by skipping server-side rendering entirely. Learn when to use it, how to provide fallbacks, and the SEO trade-offs you need to weigh.
Learn how to diagnose and fix common core-js issues, from runtime TypeError crashes in old browsers to excessive bundle bloat, using Babel's useBuiltIns strategies.
Learn how the PureScript bundle optimizer removes unused PureScript definitions, see a minimal example, and understand its limits and common pitfalls.
Stop bloating your frontend. Learn how to use Astro's Islands Architecture to selectively hydrate components and reduce Total Blocking Time.
Learn how Rollup's tree shaking removes unused code through static analysis of ES Modules and how to avoid common pitfalls like side effects and CommonJS dependencies.
astro
corejs
purescript
rollup