Svelte Performance Tips Cheat Sheet

Reactive statements, stores, and compile-time checks

Last Updated: November 21, 2025

Focus Areas

Focus
Use `const` props and avoid mutable references when possible
Bundle shared logic into stores to avoid repeated computations

Commands & Queries

npm run check
Run Svelte checks
npm run test -- --watch
Test components actively
npm prune && npm install
Refresh dependencies

Summary

Let the compiler handle updates and keep manual DOM work minimal.

💡 Pro Tip: Lean on derived stores and destructuring to avoid unnecessary work.
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