Talks from our events
Latest
All talksStress Test Your Reflexes (And My App)
Web Engineering Summit 2026
32 min
Stress Test Your Reflexes (And My App)

What happens when you turn your audience into a live, distributed load test?We will kick off this session with a high-stakes, multiplayer "Whack-a-Mole" challenge played right from your phone. As you compete for the leaderboard, a live stream of concurrent data will be generated to showcas...
Panel Discussion: Fullstack is Eating Frontend — Should FE Engineers Adapt?
React Summit 2026






35 min
Panel Discussion: Fullstack is Eating Frontend — Should FE Engineers Adapt?







6 authors
From Vibe Coding to Vibe Engineering
React Summit 2026
30 min
From Vibe Coding to Vibe Engineering

Web development has always moved in cycles of hype, from frameworks to tooling. With the rise of large language models, we're entering a new era of 'vibe coding,' where developers shape software through collaboration with AI rather than syntax. This talk explores what that means for the future of...
Taming the Flicker: Firebase Patterns for React Server Components
React Summit 2026
7 min
Taming the Flicker: Firebase Patterns for React Server Components

Integrating Firebase into a modern React stack often feels like a tug-of-war between server and client state. Juggling the appropriate SDK, managing rehydration flickers, and handling session management can make our "simple" SDK complex. Dive into battle-tested patterns and the latest SDK feature...
AI Can Generate Tests for You, Now What?
JSNation 2026
22 min
AI Can Generate Tests for You, Now What?

Tools like Playwright MCP (or AI) or Claude Code can generate tests for your code.Cursor can give you testing suggestions about your codebase that sounds logical within seconds also.Testing has never felt this easy before.Until the need for a full scale, seamless are effectiv...
P2P React: Local-First State, Shared Truth
React Summit 2026
27 min
P2P React: Local-First State, Shared Truth

Most apps treat the server as truth. Peer-to-peer flips that: state starts local, users carry the data, and shared truth emerges without routing every interaction through a central backend.
Outline:
- The normal React/backend model
- Server/database as the source of t...
Outline:
- The normal React/backend model
- Server/database as the source of t...
FullStack Monitoring with Open Telemetry: End-to-End Observability for Modern Applications
JSNation 2026
30 min
FullStack Monitoring with Open Telemetry: End-to-End Observability for Modern Applications

In this talk, I’ll show how to instrument applications end-to-end with OpenTelemetry, capturing metrics, traces, and logs across the entire request lifecycle. You’ll learn to pinpoint errors, understand why they happen, and fix them faster – guided by real-world examples and a starter template fo...
Supercharging Your Tooling With Rust
JSNation 2026
24 min
Supercharging Your Tooling With Rust

Yarn is the latest tool to join the Rust revolution. But is rewriting JavaScript tooling in Rust a necessity or just a trend? In this talk we'll dive into Yarn's recent updates to understand why they made the switch and how it went. We will discuss whether a fully Rust-based toolchain is inevitab...
Building ChatGPT and MCP Apps with All the Comfort of Modern TypeScript DevX
Web Engineering Summit 2026
21 min
Building ChatGPT and MCP Apps with All the Comfort of Modern TypeScript DevX

Billion of users are starting their searches on ChatGPT instead of Google.For JavaScript developers, this isn't just a trend, it's a new runtime: ChatGPT Apps. These new apps serves as a replacement for traditional web and mobile applications: interactive, tool-powered experiences living...
Agentic Interfaces: Tools, Skills, Generative UI and Web MCP
JSNation 2026
31 min
Agentic Interfaces: Tools, Skills, Generative UI and Web MCP

Who is ordering Starbucks with ChatGPT? Will an Agent just make the perfect UI for you? Do we even need websites anymore? This app could have been an API!We like using AI, but we also like using websites! Do we add AI to our site, or does our site get added to AI? This talk looks at the cu...
Featured
Every API is a Tool for Agents with Code Mode
Node Congress 2026
32 min
Every API is a Tool for Agents with Code Mode

The Talk introduces APIs, Codemode, and MCP, highlighting the role of APIs in empowering agents and AI's access to external resources. CloudFlare's evolution with MCP involves remote tool sharing and addressing challenges like large context windows. Challenges in Cloudflare's API tool access include progressive tool disclosure and splitting MCP servers. The discussion covers tool search, project management API creation, CodeMode concept, and self-documenting tools for secure tool execution. Proposed solutions include Code Mode, SDK generation, efficient control flow, token efficiency, and secure code execution. Key topics include dynamic worker loaders, Cloudflare API integration, Visitor Counter implementation, and exploring MCP server functionality.
No REST for Cap'n Web
Node Congress 2026
23 min
No REST for Cap'n Web
Top Content

Kenton Varda advocates for using CapnWeb, an RPC protocol, over REST for web APIs, emphasizing benefits for humans and AI agents. CapnWeb simplifies client-server communications by treating them as function calls. TypeScript type checking ensures method accuracy in CapnWeb across JavaScript runtimes. Stubs in CapnWeb allow method calls to execute on remote objects and simulate all possible method names for remote calls. Converting REST APIs to CapnWeb streamlines code and improves API calls. CapnWeb enhances API functionality with object-specific RPC sessions and promises pipelining for multilevel API optimization. AI agent security challenges are addressed with sandboxing and token protection in CapnWeb. CapnWeb capabilities for AI agents include passing restricted CapnWeb stubs and exploring capability-based security with CapnProto.
npm install && pray
Node Congress 2026
29 min
npm install && pray

JavaScript developers face security risks in npm packages with self-replicating worms compromising packages. Supply chain attacks target prolific maintainers leading to unauthorized code injections. Vulnerabilities in package maintainers and implicit trust contribute to successful attacks. Secure package installation practices vary between npm and Deno. AI-generated code introduces new security risks with embedded secrets. Secure AI code execution involves sandboxing for isolation and secure handling of API keys.
Why Node.js Needs an Application Server
Node Congress 2026
18 min
Why Node.js Needs an Application Server

Matteo Collina discusses Node.js, its single-threaded design, and the introduction of threads in 2018 for parallelism and CPU utilization. Node.js production monitoring focuses on application health, fault tolerance, and event loop efficiency. VAT architecture improves Node.js applications with thread migration and monitoring. Node.js manages threads and failures independently with Prometheus monitoring. Scalability in Node.js involves Kubernetes clusters and in-process scaling. Next.js with React SSR for Node.js applications enables dynamic scaling and performance. Node.js handles CPU blocking and SSR performance by utilizing multiple threads.
I Measured React Server Components’ Performance So You Don’t Have To
React Advanced 2025
22 min
I Measured React Server Components’ Performance So You Don’t Have To

Nadia introduces React server components and performance, highlighting the benefits of server components in improving performance and the need for a clear understanding of their impact on rendering and data fetching in React applications. Exploring Server-Side Rendering Impact on Performance: Analysis of transitioning from client-side to server-side rendering, including implications on performance and data fetching. Transforming Empty Screen to Performance Improvement: Detailed process of browser work, React rendering, and data fetching impact. Making the Shift to Server-Side Rendering: Impact on interactivity and data fetching optimization. Understanding the Benefits of AppRouter Version in SSR with Reduced JavaScript Payload and Introduction of Server Components. Investigating Smarter Server-Side Rendering with Server Components and Streaming in Next.js. Refactoring for Server Components: Async Data Fetching, Server Component Identification, and Utilizing Suspense for React Streaming Chunks. Enhancing Performance with Server Components: Balancing Rendering Approaches, Importance of Server-Side Data Fetching, and Leveraging Suspense for Improved Streaming.
The AI-Native Software Engineer
JSNation US 2025
35 min
The AI-Native Software Engineer
Top Content

Software engineering is evolving with AI and VIBE coding reshaping work, emphasizing collaboration and embracing AI. The future roadmap includes transitioning from augmented to AI-first and eventually AI-native developer experiences. AI integration in coding practices shapes a collaborative future, with tools evolving for startups and enterprises. AI tools aid in design, coding, and testing, offering varied assistance. Context relevance, spec-driven development, human review, and AI implementation challenges are key focus areas. AI boosts productivity but faces verification challenges, necessitating human oversight. The impact of AI on code reviews, talent development, and problem-solving evolution in coding practices is significant.
The New AI Workflows
React Advanced 2025
14 min
The New AI Workflows

The Talk delves into the impact of LLMs on engineering workflows, emphasizing the shift towards AI for code writing efficiency. It highlights the importance of problem-solving abilities and product development in hiring practices. LLMs enhance productivity for developers, designers, and product managers, enabling faster iterations and collaboration. Efficient product workflows are achieved through simultaneous UI and code work using Builder.io. Task delegation is streamlined with async agents and Builder bots, optimizing project editing and code management. Integration with tools like VS Code and Figma streamlines design and code editing, enhancing collaboration and workflow automation.
Rethinking Bundling: Why You Don’t Need Less JavaScript
JSNation US 2025
30 min
Rethinking Bundling: Why You Don’t Need Less JavaScript

The speaker, Daniel, shares insights on his role as an open source maintainer, projects Nuxt and Nitro, and living in Edinburgh. Nuxt, a full-stack framework, evolved with community support, emphasizing community-driven development. Optimization strategies for JavaScript, CSS, and font loading in Nuxt were discussed. Integration of Nuxt Scripts for web performance, challenges in meta framework development, and considerations for Nuxt V3 rewrite were highlighted. Future plans include smoother migrations and open-source access to emoji slides integration.
Keeping Up with The Fast and Furious Web
JSNation US 2025
29 min
Keeping Up with The Fast and Furious Web

Scott Talinsky's journey in web development highlights his transition from YouTube tutorials to creating educational content and courses, reflecting his passion for teaching. The evolution of web development tools showcases advancements from limited colors to modern frameworks like React and CSS features like squircles. Adapting to new technologies emphasizes core skills and freedom in tool selection. User-centric development prioritizes accessibility and understanding the purpose of tools. Learning strategies focus on fundamentals, hands-on learning, and avoiding influencer bias. Standing out in tech roles requires quality projects, broad knowledge, and effective communication.
The Dark Side of Micro-Frontends
React Advanced 2025
29 min
The Dark Side of Micro-Frontends

In the Talk, various key points were discussed regarding micro-front-end architecture. These included challenges with micro-intents, common mistakes in system design, the differences between micro-intents and components, granularity in software architecture, optimizing micro-front-end architecture, efficient routing and deployment strategies, edge computing strategies, global state and data sharing optimization, managing data context, governance and fitness functions, architectural testing, adaptive growth, value of micro-frontends, repository selection, repo structures, and web component usage.
Trending today
Templates and Components for Claude Code: The Future of AI Coding Workflows
JSNation 2026
30 min
Templates and Components for Claude Code: The Future of AI Coding Workflows
Creating a Design System for 1B+ Users in the Age of AI
JSNation 2026
25 min
Creating a Design System for 1B+ Users in the Age of AI
Internationalization (i18n) With AI-Powered Language Model
JSNation 2024
14 min
Internationalization (i18n) With AI-Powered Language Model

Today's Talk covers internationalization with the Powered Language Bundle and leveraging AI capabilities. It emphasizes the importance of planning AI roles and workflows, customizing content locally, and understanding different content types. The translation process involves linguistic analysis, accurate system instructions, and experimentation with different communication methods. The workflow includes using Express Server and Storybook for translations, connecting metadata with the user interface, and integrating AI technology responsibly for efficient and effective results.
Building a Hybrid AI Chatbot with Next.js 16
React Summit US 2025
32 min
Building a Hybrid AI Chatbot with Next.js 16

Sam discussing Next.js features including cache components for dynamic apps with a blend of static pre-rendering for speed. Discussing a dynamic app with personal data, utilizing cookies and a database for chatting, showcasing Next 16's cache components for hybrid static and dynamic pages. Making necessary changes for cache components in Next to improve page loading speed and user experience, utilizing Suspense DevTools for enhanced rendering control. Utilizing state for real-time updates from OpenAI's async iterable stream in the front end. Using generators to streamline text data transmission from OpenAI streams for efficient UI updates. Discussing the benefits of managing less client-side state and implementing optimistic rendering for instant UI feedback. Discussing the use of temporary client state, error handling, and the concept of optimistic rendering for responsive and instant applications in Next.js. Exploring features of Next 16, cache components, and the use cache directive for dynamic rendering and runtime prefetching in Next.js.
Short takes
A Brief History of Code Review (And What's Next)
JSNation 2026
8 min
A Brief History of Code Review (And What's Next)

Code review has come a long way. We’ve evolved from manual inspections and email patches to modern pull requests and automated testing. Yet, one big problem remains: developers are still stuck waiting on human approvals. Join me for a walk through the history of code review to see how our process...
Framework Native Rendering Without Code Duplication?
React Summit 2026
6 min
Framework Native Rendering Without Code Duplication?

Stephen explains how AG Grid implemented an abstraction layer that allows component libraries to target multiple frameworks, using the framework's native rendering, and without requiring framework-specific code for each feature.
How To Get The Most Out Of the Cloud As A Front-End Developer
React Summit US 2025
7 min
How To Get The Most Out Of the Cloud As A Front-End Developer

Front-end developers benefit from cloud services like AWS S3 and Lambda. AWS offers services like Cognito for identity management and Bedrock AI models. AWS Amplify provides Hosting and Cloud Development Kit for efficient development. The Cloud Development Kit is recommended for TypeScript deployment. AWS Amplify connects front-end to AWS services and SDK for back-end. QR code feedback is available for the talk.
Backend-for-Frontend Auth: The Secure JS App Architecture
JSNation US 2025
6 min
Backend-for-Frontend Auth: The Secure JS App Architecture

Challenges in OAuth, importance of back end security for front end, and implementation details of OAuth flow between front end, back end, and authorization server. Detailed process of token handling, session management, and user data retrieval in OAuth implementation between front end, back end, and authorization server.
Ensuring Quality with AI
TechLead Conf Amsterdam 2026: Adopting AI in Orgs Edition
7 min
Ensuring Quality with AI

While most of the conversation around AI in software engineering is about using it to pump out new features at a rate we haven't seen before, one of the most interesting use cases for AI is ensuring the quality of your product. From PR reviews to bug fixes to code cleanup, AI can help engineering...
Video Optimization for the Web: The Missing Piece in Lighthouse
React Summit US 2025
7 min
Video Optimization for the Web: The Missing Piece in Lighthouse

Rahul introduces video optimization principles, emphasizing modern formats, compression, bitrate reduction, and lazy loading. ImageKit simplifies video loading by compressing videos significantly and adapting to network conditions. Pausing videos when not in view saves data costs and enhances user experience.
Shipping AI Under Constraints: Build, Buy, or Kill
TechLead Conf London 2025: Adopting AI in Orgs Edition
8 min
Shipping AI Under Constraints: Build, Buy, or Kill

Dave, Engineering Manager at Capital Untap, shares a story of AI failure and lessons learned from moving too fast in AI development within the company. The AI team focused on developing a chatbot for customer service, which became a flagship initiative under engineering governance. Issues with accuracy and complexity led to pausing the chatbot project and exploring third-party vendors. Capital OnTap reset AI processes by integrating AI engineers into product teams, emphasizing standard engineering over specialized AI teams.
Using Spec-Driven Development for Production Workflows
JSNation US 2025
7 min
Using Spec-Driven Development for Production Workflows

We're discussing spec-driven development and the innovative AI IDE, QIRO, that supports this approach. QIRO focuses on structured specifications before coding, aiding developers in creating designs. The QIRO mascot, a playful ghost, symbolizes the essence of spec-driven development. Eric Hanchett discusses QIRO, emphasizing its spec-driven development feature integrated into the IDE. QIRO aids in in-depth feature planning, resembling a structured requirements approach. Coding assistants benefit from detailed examples for efficient development. Exploring Manual Coding Assistance: Creating user requirements, building design documents, and task lists manually. Example of using spec mode in a coding assistant to break down requirements, create designs, and implement features.
Garbage Collection Between V8, cppgc (Oilpan), and Native Runtimes
Node Congress 2026
9 min
Garbage Collection Between V8, cppgc (Oilpan), and Native Runtimes

Today's presentation delves into garbage collection challenges in JavaScript and native code, highlighting the impact on memory leaks and bugs. V8's implementation of minor and major garbage collection is discussed. The evolution of memory management in runtimes, including Node.js and Deno, is explored, emphasizing the shift towards automatic cleanup and improved performance. The complexity of runtime memory management, especially in handling CPP objects and bridging with workers, is outlined. Key points include the efficiency gains from generational garbage collection and the importance of migrating away from certain memory management practices for enhanced runtime performance.
Everyone Is Now a Manager - Interfaces in the World of Agents
TechLead Conf London 2025: Adopting AI in Orgs Edition
6 min
Everyone Is Now a Manager - Interfaces in the World of Agents

Sam Kmezverk's talk covers the evolving tech landscape, emphasizing key principles for agents' implementation in tasks and decision-making processes. Addressing challenges in agent orchestration, debugging system issues, and cultivating user trust are crucial for successful interface development.
Popular
Deep Dive into Undici
Node Congress 2024
24 min
Deep Dive into Undici
Top Content

Undici is a modern HTTP client for Node.js that offers improved performance and advanced features. It supports HTTP 1.1 and recently added HTTP 2.0 support. Undici provides impressive performance, especially with Undici.Stream. It also supports HTTP 1.1 pipelining, which can significantly cut response time. Undici offers flexible connection management and dispatchers, as well as interceptors for customization. Undici v7 is coming with improved APIs and platformatic runtime for running multiple microservices in the same process.
Making Multiplayer Games with Colyseus, Node.js and TypeScript
JS GameDev Summit 2022
31 min
Making Multiplayer Games with Colyseus, Node.js and TypeScript
Top Content

Today's Talk covers making multiplayer games with Coliseus, Node.js, and Typescript. It explores the state of networking on the web, alternative servers, and how Coliseus works. The Talk also discusses client-side prediction, lag compensation, server limitations, scaling, and showcases cool games made with Coliseus. Additionally, it mentions Nakama and Unity integration for client-side prediction in multiplayer games. Coliseus is available on mobile and can be found on colossus.io or the GitHub repository.
React's Most Useful Types
React Day Berlin 2023Watch video: React's Most Useful Types
21 min
React's Most Useful Types
Top Content

Today's Talk focuses on React's best types and JSX. It covers the types of JSX and React components, including React.fc and React.reactnode. The discussion also explores JSX intrinsic elements and react.component props, highlighting their differences and use cases. The Talk concludes with insights on using React.componentType and passing components, as well as utilizing the react.element ref type for external libraries like React-Select.
TypeScript and React: Secrets of a Happy Marriage
React Advanced 2022
21 min
TypeScript and React: Secrets of a Happy Marriage
Top Content

React and TypeScript have a strong relationship, with TypeScript offering benefits like better type checking and contract enforcement. Failing early and failing hard is important in software development to catch errors and debug effectively. TypeScript provides early detection of errors and ensures data accuracy in components and hooks. It offers superior type safety but can become complex as the codebase grows. Using union types in props can resolve errors and address dependencies. Dynamic communication and type contracts can be achieved through generics. Understanding React's built-in types and hooks like useState and useRef is crucial for leveraging their functionality.
Vue: Feature Updates
Vue.js London 2023Watch video: Vue: Feature Updates
44 min
Vue: Feature Updates
Top Content

The Talk discusses the recent feature updates in Vue 3.3, focusing on script setup and TypeScript support. It covers improvements in defining props using imported types and complex types support. The introduction of generic components and reworked signatures for defined components provides more flexibility and better type support. Other features include automatic inference of runtime props, improved define emits and defined slots, and experimental features like reactive props destructure and define model. The Talk also mentions future plans for Vue, including stabilizing suspense and enhancing computer invalidations.
Killing BFFs with GraphQL and Next.js
React Advanced 2021
21 min
Killing BFFs with GraphQL and Next.js
Top Content

This talk discusses the challenges and benefits of using Backend for Frontends (BFFs) and microservices in software development. It highlights how Next.js can simplify the creation of BFFs and unify the gateway for microservices. The talk also emphasizes the advantages of Next.js API routes in simplifying the development, deployment, and maintenance of APIs. It showcases the implementation of a BFF using Next.js and API routes, and the extension of API routes in an executable way. The speaker also mentions launching a course on using Next.js API routes for building a serverless GraphQL API.
Deno 2.0
Node Congress 2023
36 min
Deno 2.0
Top Content

The Talk discusses forced optimization with Node and Deno, with Deno aiming to pursue the same goals in a more expansive and modern way. Deno has built-in support for NPM and enforces security constraints. It also has a key-value database called Deno KV, which will be a core part of the Deno 2 API. Deno Deploy is a serverless Edge Functions platform powered by FoundationDB, optimized for fast reading and ideal for building eCommerce sites or application servers at the edge. Deno 2.0 is coming soon with more features under development.
Build a Design System with React and Tailwind CSS
React Summit 2022
27 min
Build a Design System with React and Tailwind CSS
Top Content

This Talk discusses design systems and how to build one using React and Tailwind CSS. Tailwind CSS provides utility classes for building complex layouts without writing CSS rules. Custom colors can be added to the Tailwind CSS config file, and font styles and text sizes can be customized. The entire Tailwind CSS configuration can be customized to meet specific requirements. Base styles can be added to the config file itself using a plugin. Reusable components can be created with Tailwind CSS, allowing for easy customization of size and color.
Using MediaPipe to Create Cross Platform Machine Learning Applications with React
React Advanced 2021
21 min
Using MediaPipe to Create Cross Platform Machine Learning Applications with React
Top Content

MediaPipe is a cross-platform framework that helps build perception pipelines using machine learning models. It offers ready-to-use solutions for various applications, such as selfie segmentation, face mesh, object detection, hand tracking, and more. MediaPipe can be integrated with React using NPM modules provided by the MediaPipe team. The demonstration showcases the implementation of face mesh and selfie segmentation solutions. MediaPipe enables the creation of amazing applications without needing to understand the underlying computer vision or machine learning processes.
Understanding React’s Fiber Architecture
React Advanced 2022
29 min
Understanding React’s Fiber Architecture
Top Content

This Talk explores React's internal jargon, specifically fiber, which is an internal unit of work for rendering and committing. Fibers facilitate efficient updates to elements and play a crucial role in the reconciliation process. The work loop, complete work, and commit phase are essential steps in the rendering process. Understanding React's internals can help with optimizing code and pull request reviews. React 18 introduces the work loop sync and async functions for concurrent features and prioritization. Fiber brings benefits like async rendering and the ability to discard work-in-progress trees, improving user experience.
React
Conquering React Concurrency
React Summit 2026
25 min
Conquering React Concurrency

When React 18 was released with the first concurrent features, the documentation clearly stated, “The most important addition in React 18 is something we hope you never have to think about: concurrency.”
It’s been a few years, and by now it’s clear that this statement was optimistic. You def...
It’s been a few years, and by now it’s clear that this statement was optimistic. You def...
Modernizing Your React App: Compiler, useEffectEvent, Activity & Friends
React Summit 2026
27 min
Modernizing Your React App: Compiler, useEffectEvent, Activity & Friends

React has changed a lot in the last year: React 19, 19.1 and now 19.2 brought a stable React Compiler, new hooks like useEffectEvent, the <Activity /> API, and better SSR primitives such as Partial Pre rendering. And more
In this talk we’ll take a demo React app that’s full of effects,...
In this talk we’ll take a demo React app that’s full of effects,...
React Strict Dom: Cross-Platform React Based on the Web
React Summit US 2025
29 min
React Strict Dom: Cross-Platform React Based on the Web

Talk on cross-platform React using ReactStrict DOM to unify web and native React, standardizing for consistent UI development. Fragmentation challenges in React due to lack of standardized styling systems, impacting development efficiency and product consistency. Exploring unsuccessful cross-platform React approaches and the importance of minimizing migration costs. Enabling web developers to build native apps with React Native while enhancing it with web APIs for seamless code migration. Benefits of code sharing for cross-platform apps, AI integration for React Strict DOM, and the future vision for React Native as a web renderer. Unified styling in React Native, Tailwind integration, and UI best practices. Flexibility and readiness in React DOM, potential inclusion in React Foundations, and considerations for reversibility of decisions in React DOM.
React Beyond the DOM
React Summit US 2025
27 min
React Beyond the DOM

Eric Rasmussen discusses React beyond the DOM, React PDF, Ink tools, and rendering to Markdown. The overview includes React Reconciler, host configuration, state management with real-world entities like light bulbs, and building a traffic light state machine visually. The talk also covers securing third-party JavaScript, expanding React rendering possibilities, advanced tooling for state machines, controlling light bulbs via renderer callbacks, server functions for fetch in the cloud, and potential robot programming with React.
From Segments to Suspense: The Future of Next.js Caching
React Advanced 2025
27 min
From Segments to Suspense: The Future of Next.js Caching

Introduction to Cache Components in Next.js 16, transforming the app router with new features like partial pre-rendering, Dynamic I.O., and caching directives. Deep dive into static params generation in Next.js focusing on changes in generating static params for improved performance. Exploring challenges of generating static params and balancing static vs. dynamic rendering for better performance. Addressing challenges with cache components, optimizing static and dynamic rendering for improved performance. Understanding impact of parameters on rendering with cache components, managing dynamic components, and introducing suspense boundaries for faster page loads. Enhancing cache life APIs, introducing a new caching model for static outputs in Next.js. Revolutionizing cache management with granular control over cache lifetimes and dynamic segment configuration. Navigating data and caching in Next.js, exploring cache components guidance and caching differences between server and client components.
Scaling React: What Actually Matters
React Summit 2026
30 min
Scaling React: What Actually Matters

React often gets blamed when applications feel sluggish."We need to migrate."
"We need a new framework."
"React can’t handle scale."
But what if React isn’t the problem?
In this talk, we’ll challenge one of the most common assumptions in frontend engineering...
"We need a new framework."
"React can’t handle scale."
But what if React isn’t the problem?
In this talk, we’ll challenge one of the most common assumptions in frontend engineering...
Gotta Go Fast: React at 60 FPS
React Summit 2026
16 min
Gotta Go Fast: React at 60 FPS

How can you create performant animations, backed by fast-updating data, on the web, using React?
Come learn how to make silky-smooth data-powered animations without having to give up the convenience of React. (Mostly…)
React is great for manipulating the DOM, but all that sh...
Come learn how to make silky-smooth data-powered animations without having to give up the convenience of React. (Mostly…)
React is great for manipulating the DOM, but all that sh...
Mess to Modern: Refactoring a React Nightmare
React Summit 2026
18 min
Mess to Modern: Refactoring a React Nightmare

Have you ever been handed a React project that felt like navigating barbed wire? 900-line components, endless useEffects, and zero modularity. Join me as we take a real-world React nightmares and refactor it live! We’ll move from an over-engineered mess to a performant, scalable app by mastering...
Lessons From Adopting React Compiler
React Summit US 2025
23 min
Lessons From Adopting React Compiler

Akash Hamilwasia presenting at React Summit 2025, shares React Compiler learnings and works on an AI audio platform. Memoization in React helps optimize UI performance by preventing unnecessary re-renders. React Compiler offers automatic memoization through static code analysis. React rules emphasize purity and immutability. The compiler analyzes and memoizes code changes for optimization. React Compiler package usage improves performance through code analysis. Understanding reactivity issues is crucial for handling React state. Compiler optimization requires correct dependency arrays and usage of external libraries. Measure React Compiler impact using React Profiler for optimization and real user impact analysis.
Node.js
Life of an ESM in Node.js – and How It's Changing for the Better
JSNation 2026
29 min
Life of an ESM in Node.js – and How It's Changing for the Better

The JavaScript ecosystem is moving towards a standardized module system, and Node.js is evolving to aid its adoption. What actually happens when Node.js loads an ES module today? This talk walks the full pipeline - resolution, loading, parsing, compilation, linking, instantiation, and evaluation....
Breaking the Context Ceiling: Implementing Recursive Language Models with LangGraph and TypeScript
Node Congress 2026
21 min
Breaking the Context Ceiling: Implementing Recursive Language Models with LangGraph and TypeScript

Jamal Legaro discusses challenges with context windows in language models and recursive language models as a solution. Enhancing language model performance through metadata and summaries, orchestrator copies, and comparing scaffold and RLM approaches. Efficient management of language model operations with slicing, recursion, code execution, and context window handling. Graph-based workflow design in Langchain for agent connections and state management. Workflow management, document analysis, and using RLM for processing large documents. Detailed workflow setup, code structure with Langsmith, and node definitions with RLM benefits for cost considerations and production readiness.
Unlocking the Power of the Dependency Graph
Node Congress 2026
19 min
Unlocking the Power of the Dependency Graph

Rui Adorno emphasizes the power of dependency graphs in JavaScript projects, highlighting the underutilized graph structure and the importance of understanding metadata. The discussion delves into advanced dependency selector syntax, integrating query language with VLT client for updates and additions, running tests, and updating versions. The exploration of VLT client features includes secure package installs, phased installation processes, and DSS capabilities. Multi-project package filtering is expanded through DSS query language with a host local selector for benefits like script inspection and AI agents.
The State of Node.js 2025
JSNation US 2025
19 min
The State of Node.js 2025

Matteo Collina presents an updated talk on Node.js, discussing roles, open-source projects, and dispelling myths. He highlights Node.js vitality, contrasts with legacy technologies like COBOL and jQuery. The talk covers Node.js popularity, software reuse, module growth, and download stats. It addresses risks of not updating Node.js, LTS support phases, version updates, adoption rates, security measures, Node 24 features like ESM support and stable permissions. Collaboration processes, TSC role, governance, and benefits of Platformatic VAT for app development are also discussed.
Node.js + TypeScript: A Native Integration Years in the Making
JSNation US 2025
19 min
Node.js + TypeScript: A Native Integration Years in the Making

Welcome to JS Nation. Marco Ippolito discusses NodeJS and TypeScript integration, challenges, and growth. TypeStripping in Node.js removes TypeScript syntax for execution. Efficient TypeStripping in Node 22 skips SourceMaps, aligns with TypeScript versions. Enhanced features in Node 22 support experimental TypeScript features with limitations. Node.js supports TypeScript features with erasable syntax and namespace in Node 23.8. Importing types correctly crucial to avoid errors. Node.js TypeScript integration update includes switching to TypeScript, browser support, and community involvement.
From Legacy to Delight: The Future of Node.js DX
JSNation 2026
21 min
From Legacy to Delight: The Future of Node.js DX

For over a decade, Node.js documentation relied on legacy tooling, despite being the critical source of truth for @types/node, Bun, Deno, and AI models. In this talk, we unveil the engineering behind @nodejs/doc-kit – the modular successor to Node’s documentation engine. Discover how we parse mas...
Node.js: More Threads Than You Think
React Advanced 2025
32 min
Node.js: More Threads Than You Think

The talk covers a range of topics including Node.js evolution to a multi-threaded system, scaling with the cluster module, managing PM2 for efficient orchestration, challenges in SSR frameworks, TCP SO reuse port for resource utilization, VAT architecture for smart service routing, zero downtime deployment with shared cache, performance benchmark results, PM2 performance challenges, legality and functionality of TCP SO reuse port, kernel balancing considerations, tool comparison between PM2 and Deno, cache consistency challenges, VAT architecture with worker thread recovery, T-scaling for vertical scaling, and updating Node V6 applications.
JavaScript File Handling Like a Pro: From ZIP Streams to Memory-Efficient Parsing
JSNation US 2025
24 min
JavaScript File Handling Like a Pro: From ZIP Streams to Memory-Efficient Parsing

Node.js offers significant capabilities for efficient file handling, emphasizing the importance of processing files effectively to avoid crashes and memory issues. Understanding streams, backpressure, and stream concepts like readable, writable, duplex, and transform streams is crucial for efficient file handling. Streams enable working with data in chunks, ensuring stable memory usage and efficient applications. Backpressure in streams optimizes memory usage by processing data incrementally, unlike loading entire files into memory. Utilizing readable streams in processing improves concurrency and avoids blocking the event loop.
Stop Paying for AI APIs: npm Install Your Way to In-Process Inference
Node Congress 2026
26 min
Stop Paying for AI APIs: npm Install Your Way to In-Process Inference

Introduction by Ed Silva, a Node.js core collaborator, discussing the significance of AI in 2026. Companies facing challenges in AI implementation, focusing on AI integration and the need for developer skills. Demonstrations of Node.js egg cooking using Hug and Face community and model inference with Hug and Face Transformers. Transformers JS extending NLP to computer vision and audio tasks, utilizing O-N-N-X format for model execution. Tasks and examples available in Transformers.js for NLP and computer vision, emphasizing model differentiation and execution processes. Optimization techniques for model download trade-offs, GPU utilization, and experimentation possibilities with models like Hugging Face.
The State of Node.js Security
Node Congress 2026
27 min
The State of Node.js Security

Introducing Node.js security overview, defining vulnerabilities, non-vulnerabilities, and preventive measures. Discussing Node.js API input validation, real vulnerabilities like HTTP server crashes, and the importance of Node.js security in widely used platforms. Discussing the importance of Node.js maintenance, the introduction of experimental permissions in Node.js 20, and the seatbelt philosophy to protect against malicious code. Discussing the importance of maintaining up-to-date Node.js versions and using tools like npx isMyNodeVulnerable for security checks. Discussing the importance of Node.js security releases, funding, and dependency vulnerability assessment for a safer Node.js environment. Using Node.js Dependency Vulnerability Assessment to evaluate and address potential vulnerabilities, ensuring automated security checks and updates for a safer Node.js environment. Automating Node.js security release process, including configuration files for dependencies, extensive testing across various environments, and creating security release issues and blog posts automatically. Support for various environments, extensive testing with over 55 suites and 5,000 unit tests, automation efforts to streamline processes, and the establishment of a maintenance threat model for enhanced security measures. For a single pull request, it takes six hours to run tests, automation efforts in progress, maintenance threat model to address security risks, permission model roadmap, ongoing discussions on security reports, and plans for the Node.js Collaborator Summit. Active community involvement in Node.js security development, four security releases from 2024 to 2026 addressing various vulnerabilities, end-of-life version strategy with Node.js 16 and 18 having high weekly downloads, and the approach to issuing CVEs for end-of-life versions. Node.js project's strategy adjustment for CVEs to include end-of-life versions, importance of Node.js threat model, trust boundaries, and developer responsibilities. Node.js protection against network data, upgrade recommendations for different Node.js versions, and upcoming changes in Node.js release schedule.
Testing
A Leak in the Shell – How Refactoring Autocomplete Broke Us and How We Fixed It
JSNation 2026
26 min
A Leak in the Shell – How Refactoring Autocomplete Broke Us and How We Fixed It

Improving the autocomplete in MongoDB's database CLI seemed like a great idea. But when the team tried to flip the feature flag, things quickly started to go sideways: A story of memory leaks, bugs that touch the very core of JavaScript as a language, and hard-learned lessons about testing and pe...
The 2025 State of JavaScript Testing
JSNation US 2025
27 min
The 2025 State of JavaScript Testing

Speaker reflects on the importance of testing, shares insights from the state of JS survey, and discusses future plans for JavaScript testing in 2025. Companies are exploring testing tools and methodologies based on surveys and personal data. Evolution of testing practices from browser to node-based environment with VTest adoption. Advancements in testing technology include VTest's role, Playwright for end-to-end testing, and comprehensive testing solutions. Progress in self-healing tests, AI integration, and tool resurgence like Storybook and MSW for API mocking. Diverse opinions on testing in 2025, with a focus on static analysis, VTest, and end-to-end testing resurgence to browser.
Ashes to Ashes, Spec to Spec: The Rebirth of Modern Testing
React Summit 2026
29 min
Ashes to Ashes, Spec to Spec: The Rebirth of Modern Testing

While tools like Jest, Jasmine, Karma, and Testing Library were always there when we needed them for testing our web apps, it's time to move on. In this talk, we'll revisit the battle scars they left behind, and explore how Vitest isn't just trendier — it's the result of hard-earned lessons in s...
Automated Accessibility Testing in React: Beyond the Basics
React Advanced 2025
9 min
Automated Accessibility Testing in React: Beyond the Basics

Introduction to Accessibility Testing in React applications, emphasizing early automation and challenges in scaling. Importance of instant feedback, Unity test, and entry testing for code accessibility. Utilizing end-to-end testing tools like Jest-Axi and Cypress to ensure accessibility compliance. Emphasis on manual testing alongside automated tools. Encouragement for discussions on LinkedIn to enhance accessibility knowledge.
Fast-Tracking Quality for Hundreds of React Applications With Automated Testing Layers
React Advanced 2025
29 min
Fast-Tracking Quality for Hundreds of React Applications With Automated Testing Layers

Discussion on improving release cycles and testing efficiency, transitioning to React Native, quality assurance challenges addressed through redefined responsibilities and test automation, shift-left approach for early testing and diversification of automated tests, efficient test execution with caching strategies, impact of caching on CI performance, efficiency with change recognition and caching, project-specific approaches for testing, test optimization with AI and Pyramid test structure, QA team transitioning to engineering, handling unautomated tests and test association, maintaining test stability with Git revert strategy.
Think Like a Tester: What to Look For in AI-Generated Code
JSNation 2026
16 min
Think Like a Tester: What to Look For in AI-Generated Code

AI is writing code faster than ever. But there's a gap: the gap between "it works" and "it works correctly."As a QA Automation Engineer with 9 years of experience, I've developed the instinct to see what breaks before it breaks. AI generates clean code that hides catastrophic bugs in plain...
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