Svelte 5 brings up to 50% bundle size decrease for existing Svelte 4 apps

from blog Stanislav Khromov, | ↗ original
Watch a video version of this blog post below! Svelte 5 brings a lot of changes, from the new Runes-based syntax to deep reactivity and performance improvements across the board. But one aspect that’s flown under the radar is the massive reduction in bundle size. In my experiments, you can get about 50% decrease in code shipped to users, just by...