PodRocket

By LogRocketTechnology

PodRocket episodes

October 21, 2025 Source maps: how does the magic work? with Nicolo Ribaudo
Ever wondered how source maps actually work? In this episode, Nicolo Ribaudo, Babel maintainer and TC39 delegate, breaks down how source maps connect your JavaScript, TypeScript, and CSS back to the original code — making debugging, stack traces, and observability smoother in Chrome dev tools.
We dive into how source maps help in both development and production with minified code, explore tools like Webpack, Rollup, Next.js, and Svelte, and share when you should turn off source maps to avoid confusion.
Links
Website: https://nicr.dev
LinkedIn: https://www.linkedin.com/in/nicol%C3%B2-ribaudo-bb94b4187
BlueSky: https://bsky.app/profile/nicr.dev
Github: https://github.com/nicolo-ribaudo
Resources
Squiggleconf talk: https://squiggleconf.com/2025/sessions#source-maps-how-does-the-magic-work
Slide deck: https://docs.google.com/presentation/d/1lyor5xgv821I4kUWJIwrrmXBjzC_qiqIqcZxve1ybw0
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LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Chapters
00:00 Intro – Welcome to PodRocket + Introducing Nicolo Ribaudo
00:45 What Are Source Maps and Why They Matter for Debugging
01:20 From Babel to TC39 – Nicolo’s Path to Source Maps
02:00 Source Maps Beyond JavaScript: CSS, C, and WebAssembly
03:00 The Core Idea – Mapping Compiled Code Back to Source
04:00 How Source Maps Work Under the Hood (Encoded JSON)
05:10 File Size and Performance – Why It Doesn’t Matter in Production
06:00 Why Source Maps Are Useful Even Without Minification
07:00 Sentry and Error Monitoring – How Source Maps Are Used in Production
08:10 Two Worlds: Local Debugging vs. Remote Error Analysis
09:00 You’re Probably Using Source Maps Without Realizing It
10:00 Why Standardization Was Needed After 15+ Years of Chaos
11:00 TC39 and the Creation of the Official Source Maps Standard
12:00 Coordinating Browsers, Tools, and Vendors Under One Spec
13:00 How Chrome, Firefox, and WebKit Implement Source Maps Differently
14:00 Why the Source Maps Working Group Moves Faster Than Other Standards
15:00 A Small, Focused Group of DevTools Engineers
16:00 How Build Tools and Bundlers Feed Into the Ecosystem
17:00 Making It Easier for Tool Authors to Generate Source Maps
18:00 How Frameworks Like Next.js and Vite Handle Source Maps for You
19:00 Common Pitfalls When Chaining Build Tools
20:00 Debugging Wrong or Broken Source Maps in Browsers
21:00 Upcoming Feature: Scopes for Variables and Functions
22:00 How Scopes Improve the Live Debugging Experience
23:00 Experimental Implementations and How to Try Them
24:00 Where to Find the TC39 Source Maps Group + Get Involved
25:00 Nicolo’s Links – GitHub, BlueSky, and Talks Online
25:30 Closing Thoughts
26 min
October 16, 2025 WASM 3.0 with Andreas Rossberg
Andreas Rossberg unpacks WASM 3.0, covering new capabilities like garbage collection, exception handling, tail calls, and support for 64-bit addressing with multiple memories. The discussion explores deterministic profiles following relaxed sim, WebAssembly’s capability-based security model, and advances in sandboxing and module design. Andreas connects these features to practical use cases in JavaScript engines and applications like Google Sheets, then looks ahead to experimental work on threading, stack switching, and async programming models shaping the next phase of the WebAssembly ecosystem.
Links
Website: https://people.mpi-sws.org/~rossberg
GitHub: https://github.com/rossberg
Resources
WASM 3.0 Completed: https://webassembly.org/news/2025-09-17-wasm-3.0
Chapters
00:00 Intro – Andreas Rossberg and the WebAssembly 3.0 Update
01:05 The State of WebAssembly Today
02:15 Why WebAssembly Exists Beyond the Web
03:20 From WebAssembly 2.0 to 3.0 – What’s Actually New
04:30 Garbage Collection: A Game-Changer for Managed Languages
06:00 The Vision of WebAssembly as a Universal Compilation Target
07:40 How GC Support Unlocks Java, Kotlin, and Dart on WASM
09:10 Expanding to 64-bit Memory – Performance and Limits
10:40 WebAssembly for Databases, AI, and LLMs
12:00 Sandboxing and Security by Design
13:10 How Capabilities and Static Analysis Keep WASM Safe
14:30 Multi-Memory Support and Real-World Use Cases
16:00 Developer Ergonomics vs. Specification Purity
17:20 Tail Calls and Functional Programming Benefits
18:40 Function Tables and Secure Indirection
20:00 Exception Handling Finally Arrives
21:10 Determinism, Efficiency, and Why It Matters for Blockchain
22:30 SIMD and Hardware Divergence Across Platforms
24:00 Balancing Portability with Performance
25:20 The Design Philosophy Behind WebAssembly
26:30 Why WASM Rejects Language-Specific Features
27:40 Proposal Process: Who Decides What Gets In
29:00 Browser Vendors and Implementation Challenges
30:10 Early Deployments: GC, Tooling, and Adoption Stories
31:30 Threads, Stack Switching, and the Future of Concurrency
33:00 Async/Await and Coroutines on WebAssembly
34:30 What’s Coming Next for WASM Developers
35:40 How to Get Involved – Working Groups and Proposals
37:00 Closing Thoughts and Thanks
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
41 min
October 08, 2025 Semantic HTML still matters with Jono Alderson
Jono Alderson joins the podcast to discuss why semantic HTML still matters today. He shares how thoughtful markup can improve accessibility and performance, from using the picture tag and responsive images to optimizing with content-visibility CSS. The conversation dives into common pitfalls like div soup, the shift toward more template-centric design, and techniques for improving the critical rendering path. Jono also discusses preloading, HTTP early hints, and the evolving role of structured data, LLMs, and Google’s trust signals in shaping a more meaningful and efficient web.
Links
Website: https://www.jonoalderson.com
X: https://x.com/jonoalderson
BlueSky: https://bsky.app/profile/jono.id
LinkedIn: https://www.linkedin.com/in/jonoalderson
Resources
Why semantic HTML still matters: https://www.jonoalderson.com/conjecture/why-semantic-html-still-matters/
Chapters
00:40 Meet Jono Alderson: SEO Consultant and Web Performance Expert
02:00 Why Semantic HTML Still Matters in 2025
05:00 Accessibility, Performance, and the 15% Market Opportunity
08:00 The Cost of Div Soup and Framework Abstraction
10:30 Finding Balance: Developer Experience vs User Experience
13:00 Template-Centric Thinking vs Component-Centric Development
16:00 What Is a Page? Rethinking How the Web Works
18:30 Structured Data, Schema.org, and Google’s Trust Signals
21:00 Quick Round: Picture Tag, Content Visibility, and Performance
23:30 The Worst HTML Anti-Patterns Developers Still Use
25:00 Will LLMs Reward Good Markup or Ignore It?
26:00 Where to Find Jono Alderson and Closing Thoughts
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
27 min
October 01, 2025 State of CSS in 2025 with Adam Argyle and Kevin Powell
In this episode of PodRocket, Adam Argyle and Kevin Powell discuss the results of the latest State of CSS survey and share how new capabilities like functions, mixins, nesting, and container queries are changing the way developers approach styling. We dive into the ongoing conversation around Tailwind and pre-processors, and look at the practical impact of features such as scroll driven animations, view transitions, and cascade layers. Adam and Kevin also explain how advances like relative color syntax and app property are making CSS variables more dynamic and reliable. Along the way, we touch on browser interoperability and imagine what’s ahead for CSS, from motion blur to fit text and beyond.
Links
Adam Argyle
Website: https://nerdy.dev
X: https://x.com/argyleink
LinkedIn: https://www.linkedin.com/in/adamargyle
YouTube: https://www.youtube.com/channel/UCBGr3ZMcV5jke40_Wrv3fNA
GitHub: https://github.com/argyleink
Kevin Powell
Website: https://www.kevinpowell.co
X: https://x.com/kevinjpowell
BlueSky: https://bsky.app/profile/kevinpowell.co
Mastodon: front-end.social/@kevinpowell
Github: https://github.com/kevin-powell
YouTube: https://www.youtube.com/@kevinpowell
Twitch: https://www.twitch.tv/kevinpowellcss
Resources
State of CSS 2025: https://2025.stateofcss.com
Chapters
01:00 Why CSS Remains Irreplaceable
05:00 Misunderstandings About CSS
09:00 Is CSS a Programming Language
12:00 Pre-processors, Post-processors, and Native Features
15:00 Too Many Features in CSS
18:00 The CSS Learning Curve and Growth Cycle
19:30 Resources for Keeping Up with CSS
20:30 New CSS Functions Explained
23:00 Complexity and Abstractions in CSS
24:00 Browser Collaboration and Interop
30:00 Using New CSS Features in Production
36:00 The App Property Feature
41:00 Future CSS Features Wishlist
46:00 Final Thoughts on CSS in 2025
48:00 Outro and Guest Links
We want to hear from you!
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guests: Adam Argyle and Kevin Powell.
44 min
September 25, 2025Google’s antitrust win, AI mandates, npm attacks and robots.txt
Is the web breaking under the weight of AI crawlers, platform consolidation, and nonstop security breaches? We dive into the state of browsers, developer burnout, and whether tech regulation can actually keep up.
In this panel discussion:
We debate if robots.txt and AI licensing standards like RSL can realistically control how AI scrapes the web.
The fallout from DIA’s acquisition by Atlassian and what it means for indie browser innovation (like the Helium browser, Zen) in a Chromium-dominated world.
Why Google’s antitrust victory might embolden other tech giants, and what that means for competition.
How supply chain attacks like the NPM malware and Shai Hulud worm are exploiting GitHub workflows and package vulnerabilities.
The pushback against AI mandates at work, including Coinbase’s controversial policy requiring developers to use Copilot.
Resources
Inside the battle for the future of the web: https://www.businessinsider.com/google-microsoft-openai-fight-standards-limit-ai-access-websites-2025-9
The web has a new system for making AI companies pay up: https://www.theverge.com/news/775072/rsl-standard-licensing-ai-publishing-reddit-yahoo-medium
The Browser Company, maker of Arc and Dia, is being acquired: https://www.theverge.com/web/770947/browser-company-arc-dia-acquired-atlassian
Google stock jumps 8% after search giant avoids worst-case penalties in antitrust case: https://www.cnbc.com/2025/09/02/google-antitrust-search-ruling.html
Massive data breach sees 16 million PayPal accounts leaked online - here's what we know, and how to stay safe:https://www.techradar.com/pro/massive-data-breach-sees-16-million-paypal-accounts-leaked-online-heres-what-we-know-and-how-to-stay-safe
PayPal’s Glitch Puts €10 Billion on Ice Across European Banks: https://fintechnews.ch/payments/paypal-glitch-freezes-european-banks-10-billion-transactions/77974/
npm Author Qix Compromised via Phishing Email in Major Supply Chain Attack: https://socket.dev/blog/npm-author-qix-compromised-in-major-supply-chain-attack
Compromised files replace npm packages with a combined 2 billion weekly downloads: https://www.techradar.com/pro/security/compromised-files-replace-npm-packages-with-a-combined-2-billion-weekly-downloads
Shai-Hulud: Ongoing Package Supply Chain Worm Delivering Data-Stealing Malware: https://www.wiz.io/blog/shai-hulud-npm-supply-chain-attack
Coinbase CEO explains why he fired engineers who didn’t try AI immediately: https://techcrunch.com/2025/08/22/coinbase-ceo-explains-why-he-fired-engineers-who-didnt-try-ai-immediately/
Chapters
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
Let us know by sending an email to our producer, Elizabeth, at [email protected], or tweet at us at PodRocketPod.
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
42 min
September 23, 2025 Unpacking the NPM supply chain attacks with Feross Aboukhadijeh
Feross Aboukhadijeh, founder of Socket, joins us to break down the recent wave of NPM supply chain attacks hitting the JavaScript ecosystem, including how attackers used phishing to target developers, snuck malware into popular packages like Prettier and "is", and even abused tools like Claude, Gemini, and TruffleHog.
We dig into how GitHub Actions vulnerabilities were exploited, what makes postinstall scripts risky, and and what you can do to protect yourself from future attacks.
Links
Website: https://feross.org
X: https://x.com/feross
GitHub: https://github.com/feross
LinkedIn: https://www.linkedin.com/in/feross
YouTube: https://www.youtube.com/channel/UCHM4OEvQDUq8UszyUrdov-w
Resources
npm Author Qix Compromised via Phishing Email in Major Supply Chain Attack: https://socket.dev/blog/npm-author-qix-compromised-in-major-supply-chain-attack
Compromised files replace npm packages with a combined 2 billion weekly downloads: https://www.techradar.com/pro/security/compromised-files-replace-npm-packages-with-a-combined-2-billion-weekly-downloads
Shai-Hulud: Ongoing Package Supply Chain Worm Delivering Data-Stealing Malware: https://www.wiz.io/blog/shai-hulud-npm-supply-chain-attack
Chapters
00:00 Intro: NPM supply chain attacks explained
01:10 What is a software supply chain attack?
02:00 NPM phishing campaign: Fake login pages
03:00 Prettier ecosystem compromised
04:00 The “is” package malware incident
05:30 NX package breach (August 27 attack)
06:40 AI-powered supply chain exploit
08:00 GitHub Actions misconfiguration
12:00 Lessons from recent NPM attacks
20:00 How malicious packages get published
25:00 Why install scripts are so risky
30:00 Limitations of banning install scripts
35:00 Open source maintainer challenges
40:00 Smarter approaches to dependency updates
44:00 The future of open source supply chain security
47:00 Closing thoughts and resources
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guest: Feross Aboukhadijeh.
41 min
September 18, 2025 Mark Dalgeish on mastering RSCs with React Router
Mark Dalgleish joins us to talk about the latest in React Router, including its growing support for React Server Components (RSC). He breaks down what RSC data mode, framework mode, and declarative mode mean for developers, and how features like the middleware API and route module API are simplifying work across tools like Vite and Parcel.
We also dive into how React 19, static site generation with RSC, and smarter data batching are reshaping performance and the future of server-side rendering in React apps.
Links
X: https://x.com/markdalgleish
GitHub: https://github.com/markdalgleish
Website: https://markdalgleish.com
LinkedIn: https://www.linkedin.com/in/markdalgleish
Resources
React Router and RSC: https://remix.run/blog/react-router-and-react-server-components
RSC Preview: https://remix.run/blog/rsc-preview
Chapters
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
Let us know by sending an email to our producer, Elizabeth, at [email protected], or tweet at us at PodRocketPod.
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guest: Mark Dalgleish.
32 min
September 11, 2025 Modularizing the monolith with Jimmy Bogard
Jimmy Bogard joins Pod Rocket to talk about making monoliths more modular, why boundaries matter, and how to avoid turning systems into distributed monoliths. From refactoring techniques and database migrations at scale to lessons from Stripe and WordPress, he shares practical ways to balance architecture choices. We also explore how tools like Claude and Lambda fit into modern development and what teams should watch for with latency, transactions, and growing complexity.
Links
Website: https://www.jimmybogard.com
X: https://x.com/jbogard

Github: https://github.com/jbogard
LinkedIn: https://www.linkedin.com/in/jimmybogard/
Resources
Modularizing the Monolith - Jimmy Bogard - NDC Oslo 2024: https://www.youtube.com/watch?v=fc6_NtD9soI
Chapters
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
Let us know by sending an email to our producer, Elizabeth, at [email protected], or tweet at us at PodRocketPod.
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guest: Jimmy Bogard.
33 min
September 09, 2025 Rolldown and VoidZero's vision for the future of JavaScript tooling with Alexander Lichter
Alexander Lichter joins the podcast to talk about Rolldown, a bundler built in Rust by Void Zero that aims to replace Rollup and ESBuild with faster builds and better enterprise scalability. He dives into the power of OXC and Oxlint, the push toward a unified JavaScript toolchain, and previews what to expect at ViteConf 2024.
Links
X: https://x.com/TheAlexLichter
Website: https://www.lichter.io
Mastodon: https://hachyderm.io/@manniL
GitHub: https://github.com/manniL
YouTube: https://www.youtube.com/@TheAlexLichter
Twitch: https://www.twitch.tv/TheAlexLichter
LinkedIn: https://www.linkedin.com/in/alexanderlichter
Resources
Rolldown: How Vite Bundles at the Speed of Rust: https://squiggleconf.com/2025/sessions#rolldown-how-vite-bundles-at-the-speed-of-rust
Rolldown: https://rolldown.rs
Rolldown-vite migration: https://vite.dev/guide/rolldown

Oxlint Type Aware linting (preview) announcement: https://oxc.rs/blog/2025-08-17-oxlint-type-aware.html
ViteConf: https://viteconf.amsterda
Benchmarks:
Minifier: https://github.com/privatenumber/minification-benchmarks

Linter: https://github.com/oxc-project/bench-javascript-linter

Parser: https://github.com/oxc-project/bench-javascript-parser-written-in-rust

Transformer: https://github.com/oxc-project/bench-transformer/

Bundler: https://github.com/rolldown/benchmarks
Chapters
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
Let us know by sending an email to our producer, Elizabeth, at [email protected], or tweet at us at PodRocketPod.
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guest: Alexander Lichter.
40 min
September 04, 2025 The useless useCallback: React performance myths unpacked, with Dominik Dorfmeister
Dominik Dorfmeister unpacks the pitfalls of React’s useCallback and useMemo, revealing how these hooks often introduce more complexity than performance gains. He explores the promise of the React Compiler, the practical power of the “latest ref” pattern, and strategies to boost code readability and maintainability at scale.
Learn why overusing useEffect and manual memoization can do more harm than good, and how teams can level up their PR reviews and performance practices using tools like the ESLint React Compiler plugin.
Links
Bluesky: https://bsky.app/profile/tkdodo.eu
Github: https://github.com/tkdodo
X: https://x.com/TkDodo
Resources
The Useless useCallback: https://tkdodo.eu/blog/the-useless-use-callback
Chapters
00:00 Why talk about useCallback and useMemo
00:40 Are useCallback and useMemo actually useless?
02:00 When (if ever) memoization is worth it
07:30 Pitfalls of overusing memoization in PRs and team guidelines
12:10 Latest ref pattern as an alternative
18:40 React Compiler and ESLint support
23:30 Why self-reviews help catch unnecessary memoization
28:10 Do React docs encourage over-optimization?
33:00 Advice for React developers
We want to hear from you!
How did you find us? Did you see us on Twitter? In a newsletter? Or maybe we were recommended by a friend?
Fill out our listener survey!
Let us know by sending an email to our producer, Elizabeth, at [email protected], or tweet at us at PodRocketPod.
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What does LogRocket do?
LogRocket provides AI-first session replay and analytics that surfaces the UX and technical issues impacting user experiences. Start understanding where your users are struggling by trying it for free at LogRocket.com. Try LogRocket for free today.
Special Guest: Dominik Dorfmeister.
23 min

About PodRocket

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PodRocket covers everything you need to know about frontend web development on a weekly basis. Join our hosts as they interview experienced developers about all the libraries, frameworks, and tech…