Talks from our events
Latest
All talksFrom Figma to TV & Beyond: Scaling React UI with Design Tokens & MCP
React Summit 2026
17 min
From Figma to TV & Beyond: Scaling React UI with Design Tokens & MCP

How do you scale a React UI system from Smart TVs to refrigerators, washing machines, and more while keeping everything consistent? This talk shares our real-world experience extending a React-based UI component system (initially built for webOS TV) into a multi-platform design system in collabor...
FWD: Urgent Opportunity to Claim Your React + MDX Newsletter Inheritance
React Summit 2026
19 min
FWD: Urgent Opportunity to Claim Your React + MDX Newsletter Inheritance

Hello, dear friend,
I trust this message reaches you in excellent spirits. I write to you not only as a humble developer, but as the sole surviving heir of an ancient lineage of engineers whose wisdom has been carefully safeguarded through centuries.
With great urgency, I in...
I trust this message reaches you in excellent spirits. I write to you not only as a humble developer, but as the sole surviving heir of an ancient lineage of engineers whose wisdom has been carefully safeguarded through centuries.
With great urgency, I in...
React Performance Patterns That Break Down in Long-Running Production Apps
React Summit 2026
20 min
React Performance Patterns That Break Down in Long-Running Production Apps

Modern React tooling keeps improving, yet many teams still struggle with performance regressions that appear months after launch. This talk explores common React patterns that look correct early on but quietly degrade performance as applications grow, and how to reason about them before they beco...
Pocket Guide to Seniority
React Summit 2026
25 min
Pocket Guide to Seniority

Many developers believe seniority is something that happens automatically with time. In practice, some engineers repeat the same year of experience for a decade, while others grow rapidly by changing how they approach problems, people, and responsibility. This talk explores the mindset and behavi...
Using Spec-Driven Development for Production Workflows
Web Engineering Summit 2026
19 min
Using Spec-Driven Development for Production Workflows

AI coding assistants are great at completing small tasks or features. But what do you do when you're working with more complex codebases and need to build in-depth features that require upfront planning?This talk explores spec-driven development as a solution to this problem. I'll show you...
AI Can Generate Tests for You, Now What?
Web Engineering Summit 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...
Voice Agents Crash Course
AI Coding Summit 2026
26 min
Voice Agents Crash Course

Stepan Suvorov, CTO at Roadsoft, discusses the rise of Voice Agents, highlighting market growth, improved models for speech to text and voice generation, reduced latency, and cost-effectiveness. Key components include speech-to-text, LLM analysis, text-to-speech conversion, orchestration, and addressing latency. Delving into essential aspects like voice activity detection, interruption handling, and model selection criteria for Voice Agents. Exploring parameters such as latency, quality, pricing, language support, and voice cloning options. Comparing DIY and managed solutions for Voice Agents, emphasizing flexibility and cost-effectiveness. Discussing cost implications between managed and self-hosted solutions, considering usage volumes and scale. Addressing infrastructure challenges, testing approaches, WAPI limits, model selection, and future plans for voice agents.
Protecting Your Cookies from Hackers and Hungry Developers!
React Summit 2026
27 min
Protecting Your Cookies from Hackers and Hungry Developers!

We will explore how attackers steal browser cookies and session data, even with modern protections in place. The session showcases real-world techniques used in post-exploitation to extract sensitive information. It highlights the need for developers and defenders to understand browser internals...
The Fourth Platform: How Vega Got Us Surprisingly Close to “Write Once, Run Everywhere”
React Summit 2026
31 min
The Fourth Platform: How Vega Got Us Surprisingly Close to “Write Once, Run Everywhere”

“Write once, run everywhere” is a promising goal in software development, but one that often breaks down under real-world compatibility problems. At Zattoo, building streaming applications across Android, Apple, and Web meant years of separate native stacks that were not aligned, and therefore di...
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.
Featured
Never Worry About CORS Again
JSNation US 2025
28 min
Never Worry About CORS Again

Talk on Bund: Overview of Bund, its speed optimization, components like runtime, package manager, test runner, and bundler. Efficient features include fast npm manager, pnpm lockfile support, Jest-compatible test runner, and optimized runtime components. Built-in features like modern password hashing, WebSocket server, file glob API, and database clients. API design focuses on common use cases and optimization. Enhanced JavaScript functionality with SIMD, native code, and performance improvements. Challenges in JavaScript productivity, BUN adoption, deployment, and support. React support, community involvement, security, Next.js compatibility, and transition.
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.
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.
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.
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.
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.
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.
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.
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.
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
Mess to Modern: Refactoring a React Nightmare
React Summit 2026
18 min
Mess to Modern: Refactoring a React Nightmare
Skills in Claude Code Desktop: Architecture and Execution Runtime
React Summit 2026
25 min
Skills in Claude Code Desktop: Architecture and Execution Runtime
HTML in Canvas: Bridging UI and GPU on the Web
JSNation 2026


17 min
HTML in Canvas: Bridging UI and GPU on the Web



2 authors
Global-Scale React: Architecting for Localization, Multi-Tenancy, and Dynamic Markets
React Summit 2026
14 min
Global-Scale React: Architecting for Localization, Multi-Tenancy, and Dynamic Markets
Modernizing Your React App: Compiler, useEffectEvent, Activity & Friends
React Summit 2026
27 min
Modernizing Your React App: Compiler, useEffectEvent, Activity & Friends
Protecting Your Cookies from Hackers and Hungry Developers!
React Summit 2026
27 min
Protecting Your Cookies from Hackers and Hungry Developers!
Short takes
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.
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.
From TV to Touch: How We Made React UI Work Across Every Input Mode
React Summit US 2025
5 min
From TV to Touch: How We Made React UI Work Across Every Input Mode

Seungho Park discusses the importance of spatial navigation for TV apps and the challenges of supporting remote, pointer, and touch inputs. Real examples are explored, including focus placement, restoring focus, and grouping elements for stable navigation. Challenges in TV app navigation such as key scrolling in grid lists and managing input mode transitions are highlighted. The talk also delves into handling input modes, designing for 5-way, pointer, and touch input, and addressing edge cases. Implementing the W3C spatial navigation standard, defining focus properties for container elements, and encouraging exploration of React UI spatial navigation support are key points.
Navigating Islands of Interactivity
React Advanced 2025
9 min
Navigating Islands of Interactivity

Islands in web development are interactive components that are rendered on the server and hydrated separately. They offer fine-grain control over JavaScript, speed up page loading, and reduce JavaScript shipping. Applications of islands span across eCommerce, media sites, docs, and blogs, providing interactivity without excessive JavaScript. Nanostores enable state sharing among islands. Key takeaways include utilizing Nanostores for state management, exploring ASTRO and islands for development, and using client directives for JavaScript control.
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.
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.
From Experiment to Enterprise: Scaling AI Coding Assistants Across Engineering Teams
TechLead Conf London 2025: Adopting AI in Orgs Edition
9 min
From Experiment to Enterprise: Scaling AI Coding Assistants Across Engineering Teams

Sharing insights on scaling AI coding assistance & adopting AI native dev tools. Discussing the need for a shift from viewing adoption as a tech problem to a change management challenge. Exploring a tactical framework with three key phases: onboard, adopt, succeed. Emphasizing the importance of onboarding developers, ensuring access to licenses, and setting clear policies to avoid 'shadow AI'. Highlighting the necessity of human infrastructure for successful AI dev tool implementation, including AI advocates, communities of practice, and executive sponsorship. Adoption strategies require a focus on interconnected metrics and all pillars simultaneously. Leadership checklist for post-conference actions involves measuring metrics, distinguishing between strategic and tactical points, and staying connected through platforms like WhatsApp and LinkedIn.
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.
Deploy Your AI Code in Minutes
AI Coding Summit 2026
7 min
Deploy Your AI Code in Minutes

Shifra guides the migration of a Repl.it app to Render with emphasis on simplicity and mock data. Ensure Render deployment requirements are met, including specifying root directory, build and start commands, and correct port. Configure GitHub repository setup, connect to Git, and create a repository. Confirm code in the repository and deploy on Render, showcasing a sample landing page.
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.
Popular
One Year Into Vue 3
Vue.js London Live 2021
20 min
One Year Into Vue 3
Top Content

Vue 3 has seen significant adoption and improvements in performance, bundle size, architecture, and TypeScript integration. The ecosystem around Vue 3 is catching up, with new tools and frameworks being developed. The Vue.js.org documentation is undergoing a complete overhaul. PNIA is emerging as the go-to state management solution for Vue 3. The options API and composition API are both viable options in Vue 3, with the choice depending on factors such as complexity and familiarity with TypeScript. Vue 3 continues to support CDN installation and is recommended for new projects.
Levelling up Monorepos with npm Workspaces
DevOps.js Conf 2022
33 min
Levelling up Monorepos with npm Workspaces
Top Content

NPM workspaces help manage multiple nested packages within a single top-level package, improving since the release of NPM CLI 7.0. You can easily add dependencies to workspaces and handle duplications. Running scripts and orchestration in a monorepo is made easier with NPM workspaces. The npm pkg command is useful for setting and retrieving keys and values from package.json files. NPM workspaces offer benefits compared to Lerna and future plans include better workspace linking and adding missing features.
Options API vs Composition API: Choosing the Right Approach for Your Team
Vue.js London Live 2021
23 min
Options API vs Composition API: Choosing the Right Approach for Your Team
Top Content

Today's Talk discusses the Options API and Composition API in Vue 3, highlighting the differences and considerations when choosing an approach. The Composition API offers more flexibility and integrates well with TypeScript, but may require more familiarity with JavaScript. Combining both APIs allows for structure and flexibility, with the ability to progressively enhance code. Team preferences and the level of TypeScript usage should be considered when choosing the right approach for a project.
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.
Utilising Rust from Vue with WebAssembly
Vue.js London Live 2021
8 min
Utilising Rust from Vue with WebAssembly
Top Content

In this Talk, the speaker demonstrates how to use Rust with WebAssembly in a Vue.js project. They explain that WebAssembly is a binary format that allows for high-performance code and less memory usage in the browser. The speaker shows how to build a Rust example using the WasmPack tool and integrate it into a Vue template. They also demonstrate how to call Rust code from a Vue component and deploy the resulting package to npm for easy sharing and consumption.
The Good, The Bad, and The Web Components
JSNation 2023
29 min
The Good, The Bad, and The Web Components
Top Content

Web Components are a piece of reusable UI enabled by web standards and built into the web platform. They offer the potential for faster component initialization and less library overhead. Web Components can be created from scratch and utilized with existing component libraries. Shadow DOM and Declarative Shadow DOM provide benefits such as scoped CSS and server-rendered components. The tradeoff between not repeating oneself and achieving full server-side rendering support is discussed. User experience is deemed more important than developer experience.
React Query: It’s Time to Break up with your "Global State”!
React Summit Remote Edition 2020
30 min
React Query: It’s Time to Break up with your "Global State”!
Top Content

Global state management and the challenges of placing server state in global state are discussed. React Query is introduced as a solution for handling asynchronous server state. The Talk demonstrates the process of extracting logic into custom hooks and fixing issues with state and fetching logic. Optimistic updates with mutation are showcased, along with the benefits of using React Query for data fetching and mutations. The future of global state management is discussed, along with user feedback on React Query. The Talk concludes with an invitation to explore React Query for server state management.
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.
Svelte 5: North Star
JSNation US 2024
29 min
Svelte 5: North Star
Top Content

As a child, the speaker was fascinated with space and finding direction. Svelte is an HTML-first approach to web development that simplifies tasks and offers efficient reactivity. The speaker reflects on Svelte's growth, goals, and design philosophy. Svelte aims to fix broken software and prioritize user focus. The future direction includes error boundaries, better debugging, and AI's role. Building open source software is challenging, and Rust's impact is discussed. The speaker values framework diversity and highlights the advancements and challenges faced by web development.
Network Requests with Cypress
TestJS Summit 2021
33 min
Network Requests with Cypress
Top Content

Cecilia Martinez, a technical account manager at Cypress, discusses network requests in Cypress and demonstrates commands like cydot request and SCI.INTERCEPT. She also explains dynamic matching and aliasing, network stubbing, and the pros and cons of using real server responses versus stubbing. The talk covers logging request responses, testing front-end and backend API, handling list length and DOM traversal, lazy loading, and provides resources for beginners to learn Cypress.
React
Suspenseful Component Composition
React Summit US 2025
12 min
Suspenseful Component Composition

Simeon Griggs discusses Suspenseful Component Composition, the use of fallback props, and the basics of suspense in React applications with a demo showcasing data fetching and layout shifting. Exploring issues with data fetching and suspense boundaries. Addressing the challenges of using suspense boundaries and data fetching for individual rows in React applications. Creating consistent fallback elements for smooth loading experiences in tables by aligning sizes and optimizing data fetching placement. Optimizing data fetching placement for smoother loading experiences. Consider exporting suspense boundary to enhance code cleanliness and be defensive against data fetching errors. Use error boundaries to handle errors in suspenseful data fetching components for a smoother user experience.
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...
Plug and Play Design: Building Extendable React Applications
React Summit US 2025
29 min
Plug and Play Design: Building Extendable React Applications

Mateusz Jagodziński, principal developer at Synergy Codes, shares insights on Plug and Play Design Building Extendable React Applications, discussing feature flags, modularity, and real-world use cases. Challenges of feature flags, the concept of alternative modular design for feature management, and the importance of modularity in code organization and development. Configurability and limitations in feature management, showcasing a plugin-based design for flexible tool versions and code manipulation. Explanation of plug and play design for code manipulation and version control with full type safety in TypeScript projects. Exposing functions to register new plugins, organizing plugins' logic within individual folders, and implementing a build setup with a replacement mechanism for plugin files. Replacing missing plugins with a fallback code, enforcing restriction on direct plugin imports, and visualizing the relationship between plugins, adapters, and application components. Exploring pros and cons of self-contained plugins, addressing implementation overhead, and discussing the value of enforced modularity for AI coding tools. Discussing plugin management decisions based on client needs and the scalability of the approach with changing requirements and minor tweaks. Handling plugin version tracking, automated testing challenges, and feature control based on environments. Adapters and maintaining plugin compatibility through iterations and cosmetic changes, leveraging existing solutions for simplicity. Discussing the implications of not shipping separate builds for multiple customers and considering the benefits of smaller bundle size. Exploring the ease of trying out new features with separate plugins to assess overhead and developer experience.
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 on the Edge
React Summit 2026
17 min
React on the Edge

We all know React as the community favorite library for developing web and mobile but what about devices on the edge? Edge/Embedded devices have significant restrictions on resources (memory, disk space, and compute) but that doesn't mean React can't be deployed to them. In this talk we'll discus...
Replacing Form Libraries With Native Web APIs
React Summit 2026
17 min
Replacing Form Libraries With Native Web APIs

In 2026, shipping a heavy library like Formik or React Hook Form is often an unnecessary performance tax. This "delete code" session showcases how to use the Constraint Validation API, the Popover API, and native HTML Form Validation to build complex, accessible, and high-performance forms with z...
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.
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.
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...
Node.js
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.
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.
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.
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.
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...
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.
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.
Testing
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.
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.
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...
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.
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