Rich Harris joins the podcast to discuss his talk, fine-grained everything, exploring fine-grained reactivity, frontend performance, and the real costs of React Server Components and RSC payloads. Rich explains how Svelte and SvelteKit approach co-located data fetching, remote functions, and RPC to reduce server-side rendering costs, improve developer experience, and avoid unnecessary performance overhead on mobile networks. The conversation dives into async rendering, parallel async data fetching, type safety with schema validation, and why async-first frameworks may define the future of JavaScript frameworks and web performance.

X: https://x.com/Rich_Harris

Modern front-end frameworks like Svelte are astonishingly fast at rendering, thanks to techniques such as signal-based fine-grained reactivity. But there's more to performance than updating the screen at 60 frames per second. In this talk, we'll learn about new approaches that help you build fast, reliable, data-efficient apps.

Slides: https://fine-grained-everything.vercel.app/1-1

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Special Guest: Rich Harris.

In this mini-panel, Jack, Paige, Paul, and Noel discuss how AI reshaping developer tooling is impacting open source monetization, including the recent Tailwind layoffs and the collapse of Tailwind documentation traffic caused by AI. The conversation expands into broader developer tooling business models and reacts to claims like Ryan Dahl stating that the era of humans writing code is over.

They also cover the Astro Cloudflare acquisition, what it means for the Cloudflare developer platform, and how this shapes the frontend frameworks future. Hot takes include light mode vs dark mode SaaS, shifting developer aesthetics, and why AI productivity for developers may now come down to workflow design rather than raw coding skill.

Tailwind Layoffs and AI

Astro joins Cloudflare

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Special Guest: Jack Herrington.

Michael Hladky joins the pod to explain how CSS performance improvements like content-visibility, CSS containment, contain layout, and contain paint can dramatically outperform JavaScript virtual scrolling. The conversation explores virtual scrolling, large DOM performance, and how layout and paint work inside the browser rendering pipeline, including recalculate styles and their impact on INP Interaction to Next Paint. Michael shares real-world examples of frontend performance optimization, discusses cross-browser CSS support including Safari content-visibility, and explains why web performance issues tied to rendering are often misunderstood and overlooked.

LinkedIn: https://www.linkedin.com/in/michael-hladky-519340148/

Conference link: https://push-based.io/event/perfnow-2025-michael-hladky-zero-js-virtual-scrolling-css

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00:00 Introduction to CSS Performance and Virtual Scrolling

In this episode of PodRocket, Daniel Thompson--Yvetot joins us to break down what’s new in Tauri 2.0 and how developers are using the Tauri framework to build desktop and mobile apps with Rust and JavaScript. We discuss how Tauri lets developers use frameworks like React, Vue, and Angular for the UI while handling heavy logic in Rust, resulting in smaller app binaries and better performance than Electron alternatives. The conversation covers Create Tauri App for faster onboarding, the new plugin system for controlling file system and OS access, and how Tauri improves app security by reducing attack surfaces. They also dive into mobile app development, differences between system WebViews, experiments with Chromium Embedded Framework, and why cross platform apps still need platform-specific thinking. Daniel also shares what’s coming next for Tauri, including flexibility in webviews, accessibility tooling, compliance requirements in Europe, and the roadmap toward Tauri 3.0.

Tauri: https://v2.tauri.app

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Special Guest: Daniel Thompson-Yvetot.

Paul sits down with Mark Techson to break down Angular v21. They explore how Angular signals power new features like Angular signal forms, improve scalability, and simplify state management. The conversation dives deep into Angular AI tooling, including the Angular MCP server, Angular AI tutor, and the Angular Gemini CLI extension, explaining how Angular is adapting to modern AI-first developer workflows. Mark also shares how Angular Aria introduces Angular headless components with built-in Angular accessibility, reshaping UX collaboration. The episode wraps with updates on using Vitest with Angular, and performance features like Angular defer syntax and Angular incremental hydration.

Blog: https://marktechson.com

Announcing Angular v21: https://blog.angular.dev/announcing-angular-v21-57946c34f14b

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00:00:00 – Introduction & What’s New in Angular v21

In this panel episode, the crew discusses AI platform consolidation, open-source sustainability, and the future of web development. We break down Anthropic’s acquisition of Bun, what it means for the JavaScript ecosystem, and whether open-source projects can remain independent as AI companies invest heavily in infrastructure.

We also discuss Zig leaving GitHub, growing concerns around AI-first developer tools, npm security vulnerabilities, and supply-chain risk in modern software. The episode wraps with hot takes on AI infrastructure costs, developer productivity, and practical advice for engineers navigating today’s rapidly changing tech landscape.

Anthropic acquires Bun as Claude Code hits $1B milestone: https://www.anthropic.com/news/anthropic-acquires-bun-as-claude-code-reaches-usd1b-milestone

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01:00 – Meet the Panel: Paige, Jack, and Paul

Special Guest: Jack Herrington.

In this repeat episode, Kent C. Dodds came back on to the podcast with bold ideas and a game-changing vision for the future of AI and web development. In this episode, we dive into the Model Context Protocol (MCP), the power behind Epic AI Pro, and how developers can start building Jarvis-like assistants today. From replacing websites with MCP servers to reimagining voice interfaces and AI security, Kent lays out the roadmap for what's next, and why it matters right now. Don’t miss this fast-paced conversation about the tools and tech reshaping everything.

Website: https://kentcdodds.com

Please make Jarvis (so I don't have to): https://www.epicai.pro/please-make-jarvis

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Jack Harrington sits down with Tanner Linsley to talk about the evolution of TanStack and where it’s headed next. They explore how early projects like React Query and React Table influenced the headless philosophy behind TanStack Router, why virtualized lists matter at scale, and what makes forms in React so challenging. Tanner breaks down TanStack Start and its client-first approach to SSR, routing, and data loading, and shares his perspective on React Server Components, modern authentication tradeoffs, and composable tooling. The episode wraps with a look at TanStack’s roadmap and what it takes to sustainably maintain open source at scale.

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01:00 – What is TanStack? Contributors, projects, and mission

Special Guest: Tanner Linsley.

In this episode, Noel sits down with David Mytton, founder and CEO of Arcjet, to unpack the React2Shell vulnerability and why it became such a serious remote code execution risk for apps using React server components and Next.js. They explain how server-side features introduced in React 19 changed the attack surface, why cloud providers leaned on WAF mitigation instead of instant patching, and what this incident reveals about modern JavaScript supply chain risk. The conversation also covers dependency sprawl, rushed patches, and why security as a feature needs to start long before production.

X: https://x.com/davidmytton

Multiple Threat Actors Exploit React2Shell: https://cloud.google.com/blog/topics/threat-intelligence/threat-actors-exploit-react2shell-cve-2025-55182

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Eytan Seidman, VP of product at Shopify, joins the podcast to unpack Shopify's Winter '26 Edition and how AI is emerging into the market for developers and merchants.

Shopify Winter '26 Edition: https://www.shopify.com/editions/winter2026

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01:00 — AI as the Focus of Winter ’26