Migrate to Svelte 5 — An Interactive Reference for Framework Refugees

Do you feel the same? You've been working in React (or Vue, or Angular) for years, shipping production code, wrestling with dependency arrays, wrapping vanilla JS libraries in framework-specific adapters, and wondering why your node_modules weighs more than your actual appl. Then you hear about Svelte 5 and its runes — $state , $derived , $effect — and something clicks. You want to try it, but the migration path feels pretty rocky. That's the gap my new site is designed to fill. What's svelte.cogley.jp It's an interactive, side-by-side reference that maps concepts — not just syntax — from React, Vue, and Angular to Svelte 5 and SvelteKit. It's kind of a "Rosetta Stone" for frontend frameworks: you pick your source language (React, Vue, or Angular), choose a category (overview, syntax, architecture, or ecosystem), and see exactly how each concept translates. I've been using Svelte so it assumes you do, too. Every mapping includes code examples on both sides, with explanatory notes that