Name: JSNation US 2025
Start: 2025-11-17T13:00:00.000Z
End: 2025-11-20T22:59:00.000Z

As AI coding assistants like Cursor, Jules, Cline and Copilot revolutionize software development, a new reality emerges: while these tools excel at generating boilerplate and routine functions-roughly 70% of coding work-they struggle with the crucial final 30% that transforms a basic solution into production-ready software. This talk explores how developers can adapt to this paradigm shift by strategically embracing AI for what it does best while doubling down on uniquely human skills. Drawing from industry leaders' insights, we'll examine why AI struggles with essential complexity like system architecture, edge cases, and maintainability, and how developers can position themselves as indispensable collaborators rather than competitors with AI. Whether you're a senior architect seeking to amplify your impact or a junior developer navigating this rapidly evolving landscape, you'll leave with practical strategies to elevate your craft beyond what AI can generate. Learn how to transform from code writers to systems thinkers, becoming "power users" who leverage AI as a force multiplier while maintaining ownership of the engineering decisions that matter most.

The Human 30%: Thriving as a Developer in the Age of AI Coding Assistants

Addy Osmani

Model Context Protocol (MCP) introduces a structured approach to LLM context management that addresses limitations in traditional prompting methods. In this workshop, you'll learn about the Model Context Protocol, its architecture, and how to build and use and MCP with Node.jsTable of Contents:<ul><li>What Is the Model Context Protocol?</li><li>Types of MCPs (Stdio, SSE, HTTP Streaming)</li><li>Understanding Tools, Resources, and Prompts</li><li>Building an MCP with the Official TypeScript SDK in Node.js</li><li>Deploying the MCP to the Cloud (Heroku)</li><li>Integrating the MCP with Your Favorite AI Tool (Claude Desktop, Cursor, Windsurf, VS Code Copilot)</li><li>Security Considerations and Best Practices</li></ul>

Build a MCP (Model Context Protocol) in Node.js

Julián Duque

JavaScript represents a big part of page weight - and optimising for performance often requires trimming or optimising the bundle - albeit imperfectly. At the same time, bundlers have never been more important in full-stack JS frameworks. In this session we’ll be rethinking how bundlers can optimise JS, if we let go of some of our previous assumptions about what bundling means.

Unpacking Bundling

Daniel Roe

In this workshop I'll cover fundamentals and a repeatable process on how to spin up full stack apps in Cursor. Expect to understand techniques such as using generative AI to create product requirements, database schemas, file trees, roadmaps etc. This will be used to generate checklists with memories to guide the entire application development process. We will dive further in on how to fix hallucinations/ errors that occur, useful prompts to make your app look and feel modern, approaches to get every layer wired up and more! By the end expect to be able to run your own AI generated full stack app on your machine!

Prototyping Full-Stack Apps With Cursor

Mike Mikula

Frontend frameworks are increasingly converging, not just in features like Signals or first class TypeScript support, but also in shared tooling. Vite now powers most ecosystems, and meta-frameworks increasingly rely on Nitro and other unified layers.In this talk, we’ll look at the next phase of this convergence: the rise of Rust-powered tooling that will improve our workflows. Up first is Rolldown, a next-gen bundler offering not only speed or compatibility with Rollup, but also advanced optimization features like granular chunk control. Another tool, actually a set of tools that is part of the equation is Oxc, the Oxidation Compiler, a modular toolchain for parsing, transforming, minifying, but also linting and formatting JavaScript - at scale.You’ll leave with a clearer picture of where frontend tooling is heading and how you can adopt these tools today to benefit of the out-of-the-box performance and advanced features.

Shaping Framework Futures With Modern Tooling

Alexander Lichter

In this workshop we'll dive into the latest advancements in React and best practices for building modern React apps. We'll take a look at modern NextJS and React Router 7 Framework (aka Remix) along with React's new "React Server Components". We'll also talk about improving the data-fetching strategies of your SPAs along with options for migrating your SPA to modern React Router.

Modern React Architecture

Brad Westfall

This talk shares real-world lessons from building and operating remote MCP (Model Context Protocol) server. It covers the architectural decisions, technical challenges, and practical insights that came from enabling scalable, context-aware model execution in one of the world’s largest payment platforms.

Lessons from Building Enterprise Remote MCP Server?

Hemanth HM

Most developers use Chrome DevTools, but what about Firefox, Safari, and Edge? Venture off the well-traveled path, and we’ll find each browser hiding its own set of overlooked tools. We’ll explore how they uniquely tackle accessibility, design, debugging, and more. Let’s follow the firefox, dive beneath the chrome on a cross-browser safari, and discover where each dev tool has the edge!

DevTool Wars: Across the Browser-verse

Will Klein

Let’s demystify the secrets of modern JavaScript tooling. In this workshop, you will learn how linters, compilers, and code transforms work. You will take your first steps building your own developer tools, writing an ESLint rule, a compiler plugin, and a code transformation. Learn these skills to help your team and deepen your understanding of computer languages.Workshop Plan:<ol><li>A preview of how ASTs can be used</li><li>A brief walkthrough of how compilers work</li><li>An intro to working with an AST</li><li>The secret to making thousands of changes in seconds</li><li>How to apply this skill</li></ol>

Start Building Your Own JavaScript Tools

Node.js introduces – experimental-config-file, a new experimental flag that enables loading a node.config.json file at startup. While it adds yet another config file, this powerful addition finally allows developers to customize Node.js execution in ways that were previously impossible. This talk explores the capabilities unlocked by this feature, including fine-tuned runtime behavior, improved portability, and potential future extensions.

One Config File To Rule Them All

Marco Ippolito

We all have those repetitive web tasks we wish would just handle themselves – sorting through data, extracting information from multiple pages, or customizing content for different audiences. What if your JavaScript application could do this autonomously, right in the browser?This talk demonstrates how to create intelligent AI agents in JavaScript that eliminate tedious tasks without sending sensitive data to the cloud. We'll combine modern web technologies with client-side AI techniques like RAG (Retrieval-Augmented Generation) and function calling to build applications that understand content, make decisions, and take actions based on user goals.

Let's Build Your Personal AI Agent in JavaScript

Aileen Villanueva

Join a focused 2-hour session covering MCP's purpose, architecture, hands-on server implementation, and future directions. Designed for developers and system architects aiming to integrate contextual data with ML models effectively. Agenda:- Introduction &amp; Why MCP? Key challenges MCP solves and core benefits.- Architecture Deep Dive: components, interactions, scalability principles. - Building Your Own MCP Server: guided walkthrough with code snippets and best practices; live demo or code review.- Future of MCP Developments: potential enhancements, emerging trends, real-world scenarios.- Wrap-up &amp; Open Discussion: recap takeaways, next steps, Q&amp;A.  Key Takeaways:- Clear understanding of MCP's rationale.- Insight into design patterns and scaling considerations.- Practical steps to implement a prototype server.- Awareness of upcoming trends and how to apply MCP in projects.

Model Context Protocol (MCP) Deep Dive: 2-Hour Interactive Workshop

Stepan Suvorov

Handling files in JavaScript goes far beyond fs.readFile. In this practical talk, you'll learn how to process large files efficiently using streams, pipeline(), async iterators, and backpressure handling — all without crashing your server. From real-time CSV parsing to ZIP decompression and production-safe file cleanup, we’ll explore powerful patterns that make your Node.js apps faster, safer, and ready for scale.

JavaScript File Handling Like a Pro: From ZIP Streams to Memory-Efficient Parsing

Noam Zingboim

Behind every healthcare dashboard or billing report is a complex web of data logic, regulatory standards, and human decisions. As a Senior Analyst working at the intersection of medical finance and technology, I’ve spent years navigating payment audits, EHR systems like EPIC, and revenue optimization — all using SQL, Python, and data visualization platforms like Tableau.But too often, the tools we rely on break down at the interface level. Whether it’s a dashboard that hides critical edge cases, a confusing filter logic, or performance bottlenecks with large datasets, the gap between engineers and analysts becomes painfully clear.In this talk, I’ll share what non-JavaScript professionals (like data analysts and healthcare teams) wish JS developers understood — from the importance of transparent data flows and smart defaults, to accessibility for non-technical users and the challenges of real-world billing logic.This isn’t a technical deep dive into code — it’s a real-world case study of how design decisions in JS-powered tools can make or break healthcare outcomes, and how engineers can build better, more empathetic data tools.

What Data Analysts Wish JavaScript Developers Knew: Lessons from Healthcare Finance

Aikerim Belispayeva

Today it's possible to create advanced eye tracking systems without specialized hardware but simply using a standard webcam and the inevitable AI. But the real difference is made by the model that is already completely on the edge and therefore on the device or browser, allowing you to work even offline! With 'AI on the edge' technologies for facial and eye detection, a bit of linear regression, and a real-time calibration system that adapts to the user and environment, I will show, using only JavaScript and on-device AI models,  the results of the experiment, discussing accuracy, current limitations, and potential improvements. The challenges faced in on-device optimization are many to balance precision and performance, but this experiment opens new possibilities for accessible applications in human-machine interaction, behavioral studies, and accessibility systems, all created with open source technologies and common hardware!

Eye Tracking & a11y on the Edge: Build an Eye Tracking With AI Running on Your Device!

Francesco Sciuti

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