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Demystifying Svelte 5's Compiler: How Runes and Signals Power Reactive Web Apps

Demystifying Svelte 5's Compiler: How Runes and Signals Power Reactive Web Apps

Tan Li Hau revisits his iconic 'Compile Svelte in Your Head' concept for Svelte 5, revealing how runes, fine-grained reactivity, and event delegation transform raw JavaScript into optimized DOM updates. This deep dive decodes the compiler's magic, empowering developers to visualize reactivity through signals, effects, and strategic DOM cloning.