Everything old is new again. But this time it's different, promise!

GitHub Copilot is an AI pair programmer that can help you write code faster and spend less time writing repetitive code.This session will cover some interesting use cases for Copilot that could shine a light on its possibilities. This ranges from prompting Copilot to suggest a function based on a comment, learning how to use a new framework, tackling a security or accessibility bug, better documenting your code, translating  code from one language to another, etc.Agenda:Introduction to CoPilot- What is Copilot- How can you use it- How it can help you write code faster- Copilot Labs experimental features I will pick examples from the React ecosystem and show how we can fix Security Vulnerabilities and Accessibility issues in some components.

As developers, we spend much of our time debugging apps - often code we didn't even write. Sadly, few developers have ever been taught how to approach debugging - it's something most of us learn through painful experience. The good news is you _can_ learn how to debug effectively, and there's several key techniques and tools you can use for debugging JS and React apps.

After spending over a decade at Google, and now as the CTO of Vercel, Malte Ubl is no stranger to being responsible for a team’s software infrastructure. However, being in charge of defining how people write software, and in turn, building the infrastructure that they’re using to write said software, presents significant challenges. This presentation by Malte Ubl will uncover the guiding principles to leading a large software infrastructure.

In this talk, Siddharth shares the challenges his team faced with optimising runtime css in js (styled-components) for performance. At GitHub, there are about 4000 React components that contain styles, Siddharth dives into the reasons for rethinking styling architecture, the challenges faced and lessons learned by migrating a big application.

It’s the hooks rule number one: “Only call hooks at the top level”.But what if I told you that this rule does not apply to every hook? One of them can actually safely be used conditionally. To understand how useContext is different from other hooks, and why it is exempted from this major rule, we need to know why this rule exists in the first place. We will build our own mental model of react’s rendering behavior, focused on how react keeps track of data at runtime: props, states, refs… and context values.

Next.js 13.4 recently released the stable version of the "App Router" – a transformative shift for the core of the framework. In this talk, I'll share why we made this change, the key concepts to know, and why I'm excited about the future of React.

In this talk is focused on performance-optimizations and standards-based approaches to achieving the fastest version of your site that you can have. We'll also talk about modern tooling and frameworks like Remix which help make your site fast with very little effort.

Aren't You Tired of Repeating Yourself? Tired of repeating the same code over and over again in your React projects? In this talk, we'll discover the power of headless components, a design pattern that separates the logic from the presentation layer, allowing you to create reusable and flexible UI components.We'll explore how headless components can simplify your development process, saving you both time and effort. We'll examine popular headless component libraries and provide tips for integrating them into your projects.

In this talk we'll delve into the art of creating something meaningful and fulfilling. Through the lens of my own journey of rediscovering my passion for coding and building a video game from the ground up with JavaScript and React, we will explore the trade-offs between easy solutions and fast performance. You will gain valuable insights into rapid prototyping, test infrastructure, and a range of CSS tricks that can be applied to both game development and your day-to-day work.

Too much JavaScript is getting you down? New frameworks promising no JavaScript look interesting, but you have an existing React application to maintain. What if Qwik React is your answer for faster applications startup and better user experience? Qwik React allows you to easily turn your React application into a collection of islands, which can be SSRed and delayed hydrated, and in some instances, hydration skipped altogether.

Are your websites accessible to all users? Are all the users able to interact with your application as intended regardless of their disabilities? Accessibility often remains an afterthought even today, and I am here to share how we can change that. In this talk, we will explore best practices for designing and building user interactions for websites that are accessible and user-friendly for our users.

The talk will be a story of how Personio went from rendering through a Monolithical PHP architecture, to a microfrontend oriented Next JS app, powered by Module Federation and the NX monorepo toolchain.

React 18! Concurrent features! You might’ve already tried the new APIs like useTransition, or you might’ve just heard of them. But do you know how React 18 achieves the performance wins it brings with itself?

It's safe to say that a lot of websites and apps these days are heavily reliant on images: product images, avatars, social sharing. With continued technological advances, the variety of device sizes you need to support keeps growing. How exactly are we to make the same page look great and feel performant on both a 16'' MacBook Pro with a retina display as well as a small 5 year old Android phone? We will look at some of the modern approaches to tackle just this problem on web and native - as well as what happens if you don't.

Meta frameworks are increasingly popular. People dunk on React all the time. Are you insane for still using React? The talk is going to cover how real companies make this evaluation of which framework to choose.

When refactoring large code bases, Find and Replace even with Regexes, can only get you so far. When that fails don’t fallback to painful manual updates instead reach for Abstract Syntax Trees (AST). In this session we introduce AST’s and show how they can be used to reason about / generate code. You will leave with a greater understanding of how you can automatically update code and new insights into how code linters work under the hood.

WASM has taken over the web-development scene in the past few years. It is a language that can be run by the web platform alongside with Javascript. Being treated as a target language, a variety of low-level, statically-typed languages such as C++ and Rust can be compiled to WASM. Thus, a variety of complex, computationally intense applications can now be tackled through readily available web applications.

GraphQL is a powerful and useful tool, especially popular among frontend developers. It can significantly speed up app development and improve application speed, API discoverability, and documentation. GraphQL is not an excellent fit for simple APIs only - it can power more advanced architectures. The separation between queries and mutations makes GraphQL perfect for event sourcing and Command Query Responsibility Segregation (CQRS).