Svelte 5 introduces a fresh way to handle reactivity called Runes, built on a powerful concept known as Signals. Paolo Ricciuti from Mainmatter breaks down this new paradigm and reveals what Signals really are under the hood. In this talk, you’ll learn how to build a simple reactivity system using signals, understand why they matter, and discover common pitfalls to watch out for. Whether you’re a Svelte beginner or looking to deepen your expertise, this session will help you master the core of Svelte’s new reactive model. #Svelte5 #Reactivity #Signals #Runes #PaoloRicciuti #FrontendNation #FEN2025 Unlock the secrets of Svelte’s new reactivity system and code smarter with signals. 💻 Read our blog: https://frontendnation.com/blog 🎟️ Sign up for Frontend Nation 2026 to stay updated: https://frontendnation.com/ 💜 Special thanks to all our event sponsors for 2025: Diamond Sponsors AG Grid: https://www.ag-grid.com/charts/?utm_source=frontend-nation&utm_medium=logo&utm_campaign=frontend-nation-sponsorship-2025 BitterBrains: https://bitterbrains.com/ Vue School: https://vueschool.io/ Certificates.dev: https://certificates.dev/ InstantDev: https://instantdev.io/ Platinum Sponsors Cypress: https://www.cypress.io/ Sentry: https://sentry.io/signup/?utm_source=event&utm_medium=sponsored-event&utm_campaign=general-fy26q2-evergreen&utm_content=signup-frontendnation2025-signup JavaScript Cert: https://certificates.dev/javascript Vue.js Cert: https://certificates.dev/vuejs/ Angular Cert: https://certificates.dev/angular React Cert: https://certificates.dev/react Nuxt Cert: https://certificates.dev/nuxt TypeScript Cert: https://certificates.dev/typescript Agorify: https://agorify.com/ Gold Sponsors Mastering Nuxt: https://masteringnuxt.com/ Mastering Pinia: https://masteringpinia.com/ LevelUp DX: https://levelupdx.com/