🔗 How we rewrote 130K lines from React to Svelte in two weeks

We ported Strawberry's entire frontend from React to Svelte in just two weeks, making the browser two times faster. This impressive feat involved using coding agents to rewrite 130,000 lines of code efficiently, demonstrating a modern approach to browser performance optimization.

The migration tackled major inefficiencies within React's framework, particularly in handling multiple concurrent UI updates caused by AI. By implementing a detailed ruleset for Svelte, this article highlights how a single engineer, aided by coding agents, achieved what would have previously required a large team within a fraction of the time.