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Talks from our events
AI Coding Summit London
AI Coding Summit London
Jul 6 - 7, 2026
JSNation 2026
JSNation 2026
Jun 11 - 15, 2026
TechLead Conf Amsterdam 2026: Adopting AI in Orgs Edition
TechLead Conf Amsterdam 2026: Adopting AI in Orgs Edition
Jun 11, 2026
Web Engineering Summit 2026
Web Engineering Summit 2026
Jun 11 - 15, 2026
Node Congress 2026
Node Congress 2026
Mar 26 - 27, 2026
AI Coding Summit 2026
AI Coding Summit 2026
Feb 26 - 27, 2026
TechLead Conf London 2025: Adopting AI in Orgs Edition
TechLead Conf London 2025: Adopting AI in Orgs Edition
Nov 28, 2025
React Advanced 2025
React Advanced 2025
Nov 27 - Dec 1, 2025
React Summit US 2025
React Summit US 2025
Nov 18 - 21, 2025
JSNation US 2025
JSNation US 2025
Nov 17 - 20, 2025
AI Coding Summit 2025
AI Coding Summit 2025
Oct 23 - 24, 2025
TechLead Conference 2025: AI in Orgs
TechLead Conference 2025: AI in Orgs
Sep 18 - 19, 2025
Latest
All talks
Streaming Systems, Hidden Risks, And AI-driven Consequences
AI Coding Summit LondonAI Coding Summit London
27 min
Streaming Systems, Hidden Risks, And AI-driven Consequences
The Talk covers various aspects of deception and security in AI and data systems. It discusses the historical use of misinformation during World War II to influence decision-making. AI model poisoning through malicious data input and the challenges of ensuring data integrity in real-time pipelines are highlighted. The importance of peripheral information attacks, data contracts, stream governance, and anomaly detection in maintaining AI system security is emphasized. Strategies for protecting data integrity, detecting anomalies, and choosing appropriate AI models are also discussed.
From Legacy to Delight: The Future of Node.js DX
JSNation 2026JSNation 2026
21 min
From Legacy to Delight: The Future of Node.js DX
Claudio Bunder emphasizes the importance of Node.js documentation, highlighting its impact on the ecosystem and the challenges in maintaining it. Node.js API documentation tooling faces significant design and implementation hurdles, with a lack of documentation hindering user interaction. The transformation of Node.js API documentation was driven by the need to improve user experience. Dockit, an AST engine, streamlines API documentation generation with support for Markdown, JS Doc, and TS Doc, offering modular flexibility and community-driven documentation creation. Dockit's efficient processing of document structures and metadata, combined with a generator system, ensures high performance and scalability in API documentation generation.
Supercharging Your Tooling With Rust
Web Engineering Summit 2026Web Engineering Summit 2026
24 min
Supercharging Your Tooling With Rust
Mael discusses the evolution of Yarn from its origins in 2016 to the current version being developed in Rust. Yarn's stability and familiarity with the codebase led to the decision to build Yarn 6 in Rust, despite challenges faced with previous rewrites and limitations of Yarn 4. Large companies using Yarn faced latency issues due to the number of workspaces. Yarn aimed for improved performance with features like lazy install to enhance user experience. Yarn aimed to be exceptionally fast, catering to various ecosystems beyond JavaScript, like Python and Rust, to enhance usability. Yarn faced challenges with breaking changes and friction during the rewrite to Yarn 2, emphasizing the importance of careful implementation in Yarn 6's development. Learning a new language was a key part of the rewrite process, with significant progress in test passing and personal proficiency in Rust. Developing in Rust led to a growth in personal proficiency and revealed insights into Rust's tooling and concurrency benefits. Rust revealed experimental features and concurrency benefits, requiring mental model shifts. Rust's human-written code rewrite with AI assistance. Challenges of integrating Yarn rewrite with Rust version and freezing main branch for rewrites. Considerations for rewriting projects in Rust, YARN's improved performance, and the importance of motivation and resilience in such endeavors. YARN's expansion to support multiple ecosystems and the invitation to engage in devlogs and share feedback on the talk and rewrite.
Taking a Dump: Using Heap Dumps to Find and Fix NodeJS Memory and CPU Problems
JSNation 2026JSNation 2026
22 min
Taking a Dump: Using Heap Dumps to Find and Fix NodeJS Memory and CPU Problems
Talking about using heap dumps to find and fix Node.js memory and CPU problems. Starting with a horror story of server crashes and memory leaks in Node.js environment. Exploring why memory leaks occur in JavaScript and how garbage collection works in programming languages. Memory leaks can occur in garbage collected environments. Understanding how garbage collection works in JavaScript and general programming languages. Exploring the mark and sweep phases of garbage collection to identify and reclaim unreachable objects. The garbage collection process involves two phases: mark and sweep. Objects not reachable from roots are marked for removal. The issue arises when objects can still be reached, causing memory leaks like with unbound caches. Memory leaks can occur due to global references or unclosed hooks causing objects to remain in memory, leading to potential memory overflow. Memory usage fluctuates due to garbage collection cycles, which prevent memory leaks by releasing unused memory. A memory leak leads to increasing memory and CPU usage, potentially causing system unresponsiveness. Pinpointing memory leaks is challenging as they affect the entire application, often appearing in production environments. Heap and memory dumps help analyze memory issues, generated in multiple ways like DevTools and command line. Exploring memory usage through Node.js application launch, debug mode, and heap snapshot analysis in Chrome DevTools. Exploring memory snapshots and pinpointing memory leaks by creating diffs between snapshots to identify leaked objects and their references for easy fixes. Exploring different methods for generating memory snapshots, including CLI flags, experimental node flags, and API usage, to efficiently identify memory leaks and manage heap dumps in Node.js environments. Discussing security considerations, challenges in memory leak detection, utilizing heap dumps for resolution, and emphasizing the importance of data security and verification in fixing memory leaks.
400 Tech Leads. Same Problems. None of Them Technical
Web Engineering Summit 2026Web Engineering Summit 2026
17 min
400 Tech Leads. Same Problems. None of Them Technical
Henri Fischer discusses tech lead challenges, emphasizing the importance of defining the tech lead role and addressing time management issues through delegation. Transitioning from a driver to a support role in one-on-one meetings improves efficiency and accountability. Strategies for effective feedback, delegation, and process management include reducing fear, setting clear expectations, and ensuring clear ownership for successful project management.
Effective Thinking in the Age of Augmented Tooling
TechLead Conf Amsterdam 2026: Adopting AI in Orgs EditionTechLead Conf Amsterdam 2026: Adopting AI in Orgs Edition
30 min
Effective Thinking in the Age of Augmented Tooling
Discussion on effective thinking in the age of augmented tooling, user interface development, AI's impact on software engineering, and the importance of saving time. Importance of identifying high cognitive load tasks and introducing a framework for tech leads to guide teams with AI. Leveraging existing knowledge in the era of AI, transformative learning framework, and recognizing one's identity in the craft. Aang's transformative decision, reimagining roles for AI engineers, effective communication with AI, and revival of liberal arts in tech education. Startups' agility, clarity in logic, and continuous adaptation in engineering. Constant evolution, adapting to changing technology, and problem-solving focus in tech roles. Loop engineering concept, autonomous problem-solving loops, importance of defining problems, utilizing data effectively, and adapting to changes in technology. AI-driven code review, agent loop framework, embracing being wrong for learning, and example of tool Dev 3000. AI-driven automation for browser control and improvement, focusing on cumulative layout shift optimization. Introduction to Agent Browser for browser automation and layout shift optimization. Agent Browser for continuous improvement through verification, repetition, and learning. Balancing busyness and sustainability in work and life, challenges in work-life balance for creative technology jobs, and measuring creative project success. Challenges in code reviews, automation, managing agent loop costs, and optimization.
AI Agents Drift: Identifying and Correcting Subtle Failures
AI Coding Summit LondonAI Coding Summit London
26 min
AI Agents Drift: Identifying and Correcting Subtle Failures
Sam, a forward deployed engineer turned founder, discusses building production agents in agriculture and the trend of companies creating their own agents from scratch. The challenges of maintaining and debugging agents are highlighted, along with the complexities of agent debugging and the importance of agent observability. Advanced analysis techniques for monitoring agent behavior, setting up real-time behavior signals, defining mission-critical signals, and optimizing agent orchestration are explored. Privacy considerations in observability and efficient context management for agents are also discussed, emphasizing the use of open-source models and the challenges in multi-agent workflows.
Rustifying Vite: Designing a Hybrid Toolchain for the Real World
JSNation 2026JSNation 2026
6 min
Rustifying Vite: Designing a Hybrid Toolchain for the Real World
Options for pre-bundling, transformation, and minification. Rollup, bundling, and limited chunk control. SWC for React, but complexity with multiple bundlers causing issues for maintainers and developers. Limitations in bundlers, features V8 needs. Improving build times with Rust. Introducing Roldown with rollup's API, compatibility, speed, and advanced chunking. Features like module types, lazy barrel optimization, HMR, and built-in minifier for a performant bundle. Ensuring Rust-based bundler compatibility with JavaScript ecosystem. Introduction of Swangular for efficient plugin handling. Native Rust plugins support with module resolution, aliases, TypeScript JSX transform, dynamic imports. Integration with underlying minifier, transformer, linter, and formatter for tool chain V+.
Life of an ESM in Node.js – and How It's Changing for the Better
Web Engineering Summit 2026Web Engineering Summit 2026
29 min
Life of an ESM in Node.js – and How It's Changing for the Better
Talk covers the life of an ESM in Node, import resolution, module loading improvements, TypeScript transpilation challenges, customization of module resolution and source loading, handling compilation and dependencies, ESM customization, ESM limitations, circular dependencies, and optimizing loading performance in Node.
Automating Mobile QA with Cloud Agents
AI Coding Summit LondonAI Coding Summit London
17 min
Automating Mobile QA with Cloud Agents
Agents revolutionizing mobile development with AI-driven code production and challenges in trust and quality control. Challenges in agentic code review and the need for a new approach to verify app behavior before merge in mobile development. Building a mobile QA agent stack with necessary components for efficient testing and verification. AI Gateway simplifies AI model usage with a unified interface for mobile device control and efficient storage of screenshots and recordings for QA processes. Ensuring Determinism in QA Setup for PRs with Sample Test Requests. Efficient Mobile QA Agent Development with Key Rules. Empowering Agile Product Development with AI Agents. Setting Up Agentic QA Infrastructure and Best Practices. Exploring Agents' Autonomy Through Dogfooding.
Featured
Trending today
MemLab: Automating Memory Leak Detection and Heap Analysis
JSNation 2026JSNation 2026
19 min
MemLab: Automating Memory Leak Detection and Heap Analysis
Liang introduces MemoryLab, an automated JavaScript memory leak detection tool at Meta. MemoryLab aims to automate memory debugging, use a three snapshot differentiation approach, and provide actionable reports. It clusters similar memory leak traces, reduces debugging work, and offers API customization. MemoryLab facilitates heap traversal, CLI integration, React memory leak optimization, and memory analysis with AI.
AgentCraft: Putting the Orc in Agent Orchestration
AI Coding Summit 2026AI Coding Summit 2026
10 min
AgentCraft: Putting the Orc in Agent Orchestration
Welcome to AgentCraft with Iddo Salomon, AI lead. Scale up agents for efficient work but consider cognitive overload. Agent orchestrators are crucial for task management and real-time reactions. AgentCraft is a tool inspired by real-time strategy games to manage agents effectively, with features like heroes and buildings. It visualizes repository files through terrain projection, simplifies code inspection, and enhances task management with cloud code support. Task delivery is streamlined with code merging, quests, and hero summoning for project improvement.
The Road to Async Context
Node Congress 2023Node Congress 2023
26 min
The Road to Async Context
Top Content
This Talk discusses the implementation and performance improvements of the async local storage API in Node and Cloudflare Workers. It explores the concept of continuations and execution contexts and how async local storage allows for passing contextual data through async flows. The talk also highlights the challenges in implementing async local storage in Node and the need for a standardized API. The introduction of async context as a replacement for async local storage is discussed, along with its benefits and the ongoing development of the async context API.
React + WebGPU + AI – What Could Go Wrong? 😳
JSNation 2023JSNation 2023
31 min
React + WebGPU + AI – What Could Go Wrong? 😳
Top Content
With AI and web GPU, it's an exciting time to be a developer. The speaker's journey involves combining programming and design, leading to the creation of Pure Blue, a powerful programming environment. Adding AI to the mix, the speaker discusses the potential of AI in the creative process and its impact on app development. The talk explores the role of React components and WebGPU in enabling fine-grained editing and running AI models locally. The future of app development is discussed, emphasizing the need to stay ahead of the curve and leverage the power of JavaScript.
Local First – Collaboration Beyond Cloud
JSNation US 2025JSNation US 2025
24 min
Local First – Collaboration Beyond Cloud
Rethinking collaborative app development for offline and online usage, introducing LocalFirst paradigm. Challenges of offline usage in collaborative app development and potential solutions. Benefits of the local first paradigm for user data control and offline work in collaborative apps. Exploring the local first app demo with Yjs technology for collaborative features and offline functionality. Exploring Yjs for collaborative data management and synchronization in React components, enabling a shift to a local first approach. Exploring the reduced role of the server in synchronization, emphasizing user ownership of data. Using Yjs shared types for familiar CRUD operations, introducing Yjs providers for real-time collaboration, and leveraging IndexedDB for offline data storage. The y-index-db-provider persists the document locally, and the y-web-socket-provider relays updates for collaborative scenarios, ensuring consistent list management. While offline, users make individual additions to a shared document. Upon reconnecting, Yjs ensures consistent ordering of concurrent offline changes, guaranteeing a synchronized state across all clients. What happens when clients edit the same item in Yjs is demonstrated. The last write wins register in Yjs ensures the last operation prevails. CRDTs handle concurrent edits and deletions, favoring removals for definitive operations. Yjs provides an elegant solution with conflict-free replicated data types.
Real-Time Observability and Control for Coding Agents
AI Coding Summit LondonAI Coding Summit London
30 min
Real-Time Observability and Control for Coding Agents
Today's discussion covers challenges posed by AI models becoming more adept at deception, hidden AI thought processes, addressing coding agent security risks, the future of agent deployment and security, real-time monitoring and security policies, developer experience and automated systems, model behavior analysis and agency projection, product offering and developer risk reduction, futuristic concepts and developer risk management, data storage and risk severity management, deception in model behavior and user security, policy transparency and model adaptation, model failure monitoring and safety considerations.
Dead Code Shouldn’t Exist: How We Removed 28k Lines of Code, One Knip at a Time
JSNation 2026JSNation 2026
35 min
Dead Code Shouldn’t Exist: How We Removed 28k Lines of Code, One Knip at a Time
The talk focuses on how Sentry enables efficient shipping by building a design system with consistent components and setting coding constraints. TypeScript helps in understanding code impact and maintaining code hygiene. KNIP tool aids in detecting and removing unused code efficiently. Continuous code cleanup is facilitated by KNIP, enhancing code maintenance. KNIP helps in optimizing code utilization, handling challenges, and automating code review. Extending KNIP analysis, cross-file analysis with TypeScript and ESLint, false negatives in KNIB configuration, and tree shaking impact of bundlers are discussed.
Learnings From 100+ Experiments Comparing LLMs for AI Coding
AI Coding Summit LondonAI Coding Summit London
28 min
Learnings From 100+ Experiments Comparing LLMs for AI Coding
Introduction to LLMs from a Developer's Perspective, YouTuber with AI Coding Daily channel, evaluates new models and versions on YouTube, gaining traction and positive feedback. Exploring the Best Models: My Benchmark on 18 LLMs, evaluating cost, points, and competition among models for day-to-day use. Measuring Models: Prompt Methodology, Tests on PHP, Laravel, React, TypeScript, and CSV, with emphasis on correct data usage and benchmark awareness. Model Evaluation: Chinese models' progression, benchmark awareness, and Opus and GPT superiority. Model Pricing and Quality Comparison: Opus, GPT, and Composer 2.5 cost-effective options. Composer 2.5 and GPT 5.4 mini offer quality at low prices. Choosing models based on project needs and budget constraints. Discussion on local LLM investment challenges, SONnet 5 benchmark performance, and exploration of new models like Proton Luma 2.0. Importance of skill definitions for model performance and limitations in local model implementation. Discussion on the importance of model harness, setup considerations, and evaluation methodologies for LLMs.
Our Own React Global State Manager in Less Than 50 Lines of Code
React Summit 2025React Summit 2025
26 min
Our Own React Global State Manager in Less Than 50 Lines of Code
Top Content
Speaker delves into global state management in React, mentioning Redux and alternatives like React context. Creating a global state manager in under 50 lines of code with React context, highlighting challenges with performance and React specificity. Building a custom hook named user store for state management, implementing state and API for store, handling partial state updates efficiently. Managing listeners for state changes, setting up custom hooks and selectors, and subscribing to external stores. Demonstrating optimization in state management and preventing unnecessary button re-renders. Discussion on Redux, Signals, debugging, and various global state management choices like Zestand and Redux toolkit.
Every API is a Tool for Agents with Code Mode
Node Congress 2026Node 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.
Short takes
A Brief History of Code Review (And What's Next)
JSNation 2026JSNation 2026
8 min
A Brief History of Code Review (And What's Next)
The Talk explores the transition from solo development to code review history, tracing it back to the Fagin Inspection process in the 1990s. It discusses the evolution of code collaboration from in-person meetings to remote, email-based discussions. The shift to modern code review via pull requests on GitHub improved collaboration efficiency. The integration of AI in code review enhanced processes and enabled instant feedback. Encouraging open source projects to adopt code review tools and prioritize the importance of thorough reviews is highlighted.
Using Spec-Driven Development for Production Workflows
JSNation US 2025JSNation 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 2026Node 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.
A JS Dev's Guide to Not Dismissing Blockchain
JSNation US 2025JSNation US 2025
8 min
A JS Dev's Guide to Not Dismissing Blockchain
Brian Wipo, Developer Relations lead at the Algorand Foundation, discusses the relevance of blockchain in 2025 and its impact on developers. Algorand's high-performance blockchain addresses key issues faced by other platforms, enabling new markets and real-world applications like tokenized assets and supply chain traceability. In 2025, blockchain excels in disintermediating markets, tracking data integrity, and creating new markets such as fractional ownership of assets. Real businesses on Algorand include tokenized solar panels, real estate ownership, supply chain traceability, and more. Using a para wallet with a mastercard debit card, you can buy items at the store with stable coins. Algorand TypeScript 1.0 simplifies writing smart contracts on the chain in TypeScript. TypeScript developers can now integrate blockchain using a compiler that transforms code into Teal assembly language for blockchain execution.
Backend-for-Frontend Auth: The Secure JS App Architecture
JSNation US 2025JSNation 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.
Navigating Islands of Interactivity
React Advanced 2025React 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.
Shipping AI Under Constraints: Build, Buy, or Kill
TechLead Conf London 2025: Adopting AI in Orgs EditionTechLead 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.
MCPs: How to Avoid Security Pitfalls
AI Coding Summit 2026AI Coding Summit 2026
7 min
MCPs: How to Avoid Security Pitfalls
Gil Friedman from Backslash Security discussed MCP security, focusing on the Model Context Protocol and AI assistant security risks like GitHub token exposure in auto run mode. Security measures for MCP usage include setting autorun to ask every time, postmarking MCP incidents, handling malicious servers, safeguarding sensitive information, reviewing and disabling unused tools, requiring permission before triggering actions, removing MCP from environments, and revoking API keys when necessary.
Optimizing the Path From Design to Production in Engineering Workflows
React Summit US 2025React Summit US 2025
7 min
Optimizing the Path From Design to Production in Engineering Workflows
Akbar, developer advocate at Figma, highlights the importance of exploration, representation, and production in product development. Figma leverages design systems and AI tools for efficient transition from representation to production, optimizing expertise and automating non-critical tasks. Seamless integration between design elements and the app is achieved through tools like Code Connect and Copilot, fostering collaboration between design and code.
From TV to Touch: How We Made React UI Work Across Every Input Mode
React Summit US 2025React 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.
Popular
React
Suspenseful Component Composition
React Summit US 2025React 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.
React Strict Dom: Cross-Platform React Based on the Web
React Summit US 2025React 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 2025React 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.
Plug and Play Design: Building Extendable React Applications
React Summit US 2025React 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.
Lessons From Adopting React Compiler
React Summit US 2025React 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
Unlocking the Power of the Dependency Graph
Node Congress 2026Node 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.
JavaScript File Handling Like a Pro: From ZIP Streams to Memory-Efficient Parsing
JSNation US 2025JSNation 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.
Breaking the Context Ceiling: Implementing Recursive Language Models with LangGraph and TypeScript
Node Congress 2026Node 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 2026Node 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.
Node.js: More Threads Than You Think
React Advanced 2025React 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.
Life of an ESM in Node.js – and How It's Changing for the Better
JSNation 2026JSNation 2026
29 min
Life of an ESM in Node.js – and How It's Changing for the Better
Talk about the fundamentals of ESM in Node, Node's resolution process for imports, challenges with TypeScript and Node's resolution, customizing module resolution in Node, handling source code loading, loading and parsing modules in Node, module compilation and dependencies, bytecode reuse and instantiation in Node and V8, revamping API design and ESN namespace mutability, deferred evaluation and idempotency in ESM, ESM misconceptions and circular dependencies, and the future of TypeScript loading and performance improvements.
Stop Paying for AI APIs: npm Install Your Way to In-Process Inference
Node Congress 2026Node 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 2025
JSNation US 2025JSNation 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 2025JSNation 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.
Testing
Automated Accessibility Testing in React: Beyond the Basics
React Advanced 2025React 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 2026JSNation 2026
16 min
Think Like a Tester: What to Look For in AI-Generated Code
Developers and QA engineer Wendy discuss the challenges in development and testing, using John's experience as an example. John encounters challenges with expired coupons affecting the checkout process and sprint deadlines. Developers and testers have complementary perspectives in software development; introducing the concept of QAI for enhanced quality assurance and collaboration. The QAI introduces a new perspective to code development, focusing on thorough alignment and error scanning for enhanced quality assurance. The importance of code alignment in development, the consequences of silent failures, and the necessity of handling potential hidden failures with a security-focused approach. AI builds fast and trusts everything, teaches suspicion, identifies trust gaps, and addresses accessibility failures for a secure code environment. Every team has patterns to anticipate, leveraging skills for immediate help, and focusing on effectiveness and protection in AI development. John and I collaborate using QAI to enhance code effectiveness, prioritize code alignment, fix contradictions, and address hidden failures effectively. Ship clean code timely, find bugs early to save time and trust. AI and QAI enhance speed and safety in development. Wendy emphasizes the importance of detecting bugs early and the impact on user trust and deadlines.
Fast-Tracking Quality for Hundreds of React Applications With Automated Testing Layers
React Advanced 2025React 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.
AI Can Generate Tests for You, Now What?
JSNation 2026JSNation 2026
22 min
AI Can Generate Tests for You, Now What?
Living in an exciting yet worrisome period, AI enhances productivity by generating tests. Considerations on scaling AI beyond test generation for high-quality products. AI simplifies test generation but raises quality concerns. Testing dependencies impact code validity. Overreliance on tests doesn't guarantee code safety. AI-generated tests may introduce hidden doubts. Workflow changes with AI assisting in performance, accessibility, benchmark, compliance, and setting up pipelines based on thresholds and risk assessments. Guidelines for working with AI as a team member, emphasizing the importance of standards, review checklists, and safeguarding code. Metrics, learning loops, and strategic improvement for better workflow scalability and testing model quality.
The 2025 State of JavaScript Testing
JSNation US 2025JSNation 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.
A Leak in the Shell – How Refactoring Autocomplete Broke Us and How We Fixed It
JSNation 2026JSNation 2026
26 min
A Leak in the Shell – How Refactoring Autocomplete Broke Us and How We Fixed It
The speaker presents a project to enhance autocomplete in a database CLI using TypeScript, discusses challenges with memory errors in testing, delves into Node.js memory management, explores system contexts and heap snapshots, examines JavaScript memory retention, evaluates the impact of context and eval on memory, uncovers Node.js core bugs and memory leak testing complexities, highlights the use of HeapSnapshots for memory leak detection, emphasizes the importance of application understanding in debugging, and stresses the significance of testing procedures and managing separate heaps.