Hey, we'll discuss scaling fast and engineering lessons learned in the last 15 years of tech startups. Scaling involves three things: business, team, and tech. Business scalability relies on sales and customer acquisition costs. Engineering is a tool the business uses. Scaling the team is vital as tech problems are often people problems. Team structure affects architecture and product development process. Organize teams based on purpose, not technology. Spend less time being blocked by other teams. Ship features without getting blocked. Own your own mess. Focus on product engineering partnership. Build faster using feedback cycles. Build appropriate solutions for your use case. Let go of ego and experiment with different approaches. Engineers own their own mess. Avoid work in progress. Finish the work and focus on fixing it later. Have a conversation before writing code. Scaling the tech is easier than you think. Pick an off the shelf design. Save innovation for core parts. Pick existing solutions. Focus on solving the problem. Don't waste time trying to predict future scale. Scale will surprise you. Do what works for your business. Push back on unnecessary complexity. Understand the cost of ideas. Modify the situation to fit existing design. Architecture is like a dependency graph on your code. Reduce architectural complexity by organizing code based on what it does. Use vertical models and avoid creating excessive dependencies. On the client, use vertical modules. On the back end, consider a service-oriented architecture. Start with a monolith and transition to microservices if necessary. Use folders instead of microservices when you have a small team. Use vertical models and contract or type-driven development to define clear APIs and interfaces. Avoid highly interconnected code and duplication. Focus on data structures to avoid complexity and the need for translation layers. Building translation layers can lead to slow user experience. Vertical teams aligned with vertical code allow for fast problem-solving, full control of features, and efficient data handling. Understanding the entire domain enables faster development with fewer bugs.

Hello, everybody. Today, I'm going to talk about how I solved actual challenges in React using only CSS. One of the main packages I maintain is EmojiPicker React, with hundreds of thousands of weekly downloads. It has all the features you'd expect from an EmojiPicker, but the search capability was slow. I managed to fix it using CSS. Let me show you how. The search functionality relies on global state and requires updating each emoji individually, resulting in excessive DOM work. Virtualization or virtual scrolling is not a viable solution due to the non-uniform emoji list. By examining the DOM, I discovered that each emoji had an area label with search-related information. This led me to investigate further and implement a solution from scratch. We create a new component called CSS search, which takes a value as a string. If the value is empty, we return null. We remove all emojis from the emoji list if there are search results. Emojis that match the search term are displayed. Performance is instantaneous. Empty categories are removed using the CSS has attribute. The CSS not and has selectors are used to remove empty categories. A counter is used to display the count of emojis found. By using flexbox and order, we can position the after element at the beginning of the list. CSS nesting allows us to nest everything under the emoji list, simplifying the structure. The performance of the search is still very fast. I created the flareup package, a CSS in JS library specifically for NPM packages. Flareup solves compatibility issues and works on SSR and CSR. Emoji-picker-react uses flareup to render emojis without JavaScript. Flareup places a style element on the DOM, making it easy to use.

Welcome to my talk at React Advanced 2024, How to Increase Your Impact as a Staff Engineer. In this presentation, I will give actionable tips on increasing your influence as a staff developer. Staff engineers have responsibilities such as identifying inefficiencies, performing background tasks, and balancing sprint work with staff-eng tasks. They also share knowledge through documentation and mentorship, and drive high-impact projects. Staff engineers ensure high-quality code through testing, advocacy for best practices, and innovation. To build influence, lead by example, be a mentor, and prioritize documentation and project management. Strategic thinking and problem-solving are crucial for staff engineers. Broadening expertise, showcasing work, and having public visibility are important for career growth and recognition. Open sourcing code and public engagement are valuable for staff engineers. Thank you for attending the talk!

Welcome to React Advanced London. Today's agenda: what is bun? Features, benchmark, demo, key takeaways. Bun provides a better developer experience, faster CI, and decreased app file size. Building bun on top of Zig prioritizes performance, stability, and compatibility. Install bun with npm or download the binary from the official website. Bun is a comprehensive development toolkit with a fast and efficient package manager. Learn how to benchmark CLI commands using Hyperfine with flags. Compare different package managers. Bond is fast and provides a few features in its package manager: install, add, remove, update, link. Test the bond test runner against vtest and jest using hyperfine. Discover the features supported by the test runner and the importance of bundling in JavaScript applications. Learn about the main.js code, the performance comparison of different bundlers, and the features offered by Bun, including loaders and macros. Explore macros in Bonn and how to optimize the code by including the type macro. Discover the benefits of Bonn, such as reducing CPU usage and fast installation of node dependencies.

Hello everyone. My name is Szymon Chmal and I am a Senior React Native Developer at CallStack. Today I'm going to introduce you to ASTRA, a powerful tool in modern web development that optimizes content delivery while providing the flexibility of modern JavaScript frameworks. ASTRA allows you to create blazing fast static websites without needing any JavaScript by default. It's perfect for sites that are mostly static but have a few interactive features. ASTRA is trusted by industry leaders like Microsoft and Porsche. It's built with content-driven pages in mind and supports integration with popular UI libraries like React, Vue, and Tailwind. ASTRA keeps things simple with file-based routing.

Hi, my name is Julian, and I'm extremely excited to talk about suspense. Suspense allows you to render fallback UI while waiting for asynchronous tasks to resolve, making it the unsung hero of React components. In today's talk, I will explain why suspense is crucial for React server components. Before diving into server components, let's understand the history of web rendering and the problems it posed. We then introduced server-side rendering (SSR) and static-side generation (SSG) to address these issues. However, SSR had problems like large bundle sizes, slow hydration, and sluggish initial server response time. React server components solve these problems by allowing us to differentiate between static and dynamic components. But to address the third problem, we need suspense. Today, we'll build a simplified version of suspense on the server to demonstrate its conceptual working and how it improves the rendering process from classical SSR to streaming and out-of-order streaming. Let's dive into the code by building a movie app called Notflix. We have different sections like the title, cast members, and similar movies. The components fetch their own data asynchronously, making them server components. In the classical way of server-side rendering, we loop through the children, execute them as server components, and render the HTML response. To improve the user experience, we introduce streaming, which allows us to start the response on the server, keep the connection open, and add to the response document as data becomes available. By using the write method provided by Express, we can write to the response stream instead of collecting all the HTML. Dealing with promises in sequence ensures that components are rendered in the correct order. Although the server-side rendering has improved, there is still no loading state or proper handling of suspended children. To address this, we introduce suspense on the server and build a suspense component with a fallback UI and children. We keep track of suspended children using a simple object with unique identifiers. In the renderer, we check the suspended object and loop through the entries to handle each suspended child. To replace the loading state with the content once it's available, we need to execute asynchronous functions to collect and concatenate the content, delete the entry from the suspended object, and use JavaScript to handle the swapping of elements in the browser. To replace the fallback renderer with the content, we need to wrap the fallback in a diff and add an identifier using a data attribute. We can use the CSS trick of 'display: contents' to prevent the diff from affecting the layout. Next, we wrap the available content in a template tag to add it to the document without rendering. Finally, we use custom elements and a connected callback to swap the loading boundary with the content based on the identifier. This allows us to replace multiple fallback renderers. By wrapping each section in its own boundary, the user experience is significantly improved as each section can load independently. This approach also emphasizes the importance of using the platform's existing features and functionality, such as browser caching, to enhance performance. Thank you for watching and enjoy the rest of the conference!

Welcome to my talk on long frames and INP, understanding the post-load performance. The rail model introduced in 2015 provides recommendations for responsiveness and organizing JavaScript work around user input. Metrics like FCP, FMP, and LCP measure visual completeness, while metrics like first interactive and CPU idle assess CPU idleness. Total blocking time measures the impact of long tasks on page responsiveness, and TTI assesses when the browser can respond to interactions reliably. INP is a user-centric responsiveness metric that encompasses all potential causes of slow interactions. The long animation frame API improves attribution and helps pinpoint performance problems. Tools like Vercel toolbar and trace viewer on PerfLab can visualize interaction to next paint. INP and long animation frames provide valuable insights for improving web experiences.

End-to-end testing is important for catching hard-to-find bugs, but it can be complex and time-consuming. The speaker shares their journey at YOLO apps and how they addressed these issues using Maestro, a newer testing tool. Maestro allows interaction with all aspects of the app and offers a web interface for building tests. It also provides features like auto retry and test videos for troubleshooting. The speaker also discusses automating CI/CD using Expo and EAS, which simplified the app build and distribution process. They demonstrate how EAS and MySQL Cloud can be used for reporting and investigation. The power of end-to-end testing is showcased, with a fast CI/CD time and free tests and EAS updates. Maestro has some limitations, but it offers easy test writing and 100 free tests per month, with additional tests available at a cost.

Expo pre-build demystified. This talk covers what Expo pre-build is, introduces templates, shows how to build custom templates, and incorporates continuous nature generation. Pre-build templates provide the native folders needed for Android and iOS. The Expo Pre-build process involves generating Android and iOS folders, merging files, and running config plugins or mods. Sharing templates through local tables or GitHub repositories is possible. Continuous native generation ensures native projects stay up to date. Prebuild helps achieve this workflow by updating the bare minimum template along with the expo SDK. Manual modifications can be preserved through expo-config plugins and source control of iOS and Android folders.

I'm Rohit, a founding engineer at Tria. We're working on bringing the world to web 3 using names. The talk focuses on optimizing performance by shifting from runtime to build time. Build time optimization improves performance, error detection, and bundle size. Case studies include GlueStack and React Native UStyle. React Native UStyle allows importing virtual components, while compilers transform source code and transpilers manipulate code structure. Babel is a JavaScript transpiler that offers benefits for React. AST Explorer is used to build a custom Babel plugin for removing console logs. The talk also covers bundlers like webpack, modules, loaders, and plugins in the bundling process.

In this Talk, Deepanshu discusses the concept of server-driven UI (SDUI) and its benefits. SDUI shifts the responsibility of determining the UI from the client to the server, enabling dynamic changes without touching client-side code. React's component-based architecture makes it a natural fit for SDUI, allowing for flexibility and real-time control. The server sends a schema that guides the UI structure, and React components dynamically render the UI based on the schema. SDUI enables real-time updates, personalized experiences, and enhances the user experience. However, it also presents challenges such as increased server load and managing state. Examples of companies using SDUI include Airbnb, Spotify, Netflix, and Amazon.

Hi, I'm Tom and I want to talk about rendering data that may disagree when using SQL queries. It's important to consider whether these queries are in the same transaction or separate transactions, as this affects data rendering. Implementing transactions can ensure atomic data queries and avoid inconsistencies. Managing data consistency in React can be challenging, especially with rich clients and live updates. React Query offers ways to handle data invalidation logic. Asynchronous data fetching in React can lead to inconsistent data between requests.

Let me walk you through introducing design system into mature codebase loosely based on Clio. Mature codebase challenges: inconsistent components and styling, multiple color palettes, and inconsistent design patterns. Working in siloed squads led to difficult maintenance, slow onboarding, and disjointed user experience. Design system squad realized the need for a plan and data to guide them. We need data to guide us. A React scanner library enabled us to crawl through the code base and understand the components used. Technologies like GitHub Actions, Redshift, and Count were used to store and query the data. The script involved running a scanner, configuring it, and sending the data to Redshift via Fivetran. ReaRscanner provided the pattern for processing data. We collected and sorted data on component usage and imports to identify pain points and track trends. Collaboration was a challenge, so we engaged teams through surveys, office hours, and extensive documentation. Our goal is to achieve over 60% adoption of the design system. We worked on keeping a single source of truth in our design system. Zero Height is our platform for storing component documentation, integrating tools like storybook and Figma, and ensuring alignment across design and code. Design systems are more than components and tokens; they create a shared language and process that facilitate teamwork and alignment.

I'm Gil, a performance architect at Wix. Today, I'll explain how we use code splitting to improve website performance. Code splitting breaks down JavaScript into smaller chunks or React components, loading them only when needed. This reduces JavaScript size and improves user experience. We measure performance using Core Web Vitals, focusing on INP scores, which evaluate interactivity. Reducing JavaScript improves INP. Our INP scores have significantly improved, thanks to our code splitting techniques. Let's dive into the code splitting strategies we use, starting with dynamic import and React Lazy. Let's move on to a more advanced example: conditionally loading components on page load, not on user interactions. We fetch the comments data and render the comment section only if there are any comments. This method is supported in React 18 and works for server-side rendering (SSR). React components can be loaded dynamically on scroll or hover interactions with suspense. If the components are already rendered with SSR, we just need to download and hydrate them. This is only possible with the new suspense in server-side rendering (SSR). We use react-lazy with dynamic imports to render the component when it enters the viewport. I created a download on viewport wrapper that creates a ref and uses the intersection observer to resolve a promise when the component enters the viewport. I use the viewport and a wrapper that calls a function called use, which is implemented using the suspense API from React. This function is used to manage the promise and render the components only after it's resolved. The suspense component handles this promise. We moved props calculation to the server side and fetched them in the React component. This approach simplifies the process and can be implemented using the dynamic API in Next.js. By conditionally rendering components and calculating props on the server side, we can significantly reduce the amount of JavaScript code loaded in the client side, resulting in improved performance.

Today I want to talk about why React should not adopt signals. By adopting signals in React, we can automatically track dependencies for effects and memos, leading to more efficient component rendering. Accessing specific parts of the JSX that read signals allows for fine-grained reactivity across component boundaries. Adopting signals in React requires migrating to single execution components, which only update specific parts of the application. This can become complex when dealing with components that read from different signals. In contrast, React assumes everything can change and enforces this assumption through linters and compilers, leading to more robust code and easier updates. If you're interested in signals in React or need performance improvements, let's chat!

Today we're going to talk about best practices for using Tailwind CSS. Tailwind CSS is a popular and controversial tool. It balloons within developers into two opposing camps. For some tasks, Tailwind is extremely cool. After working with Tailwind for a long time, I have identified two main requirements where Tailwind is suitable, and without them, it's better to choose an alternative tool. The first requirement is the project must have a design system. The second requirement for using Tailwind CSS is that your project must have a component approach. If you have a design system and a component approach, then Tailwind CSS may be a nice option for you. Instead of specifying the same margin at the top or the bottom, you can specify only a vertical one. Second rule while working with Tailwind is group design tokens and name them semantically. Rule number three, keep class ordering. The next advice for using Tailwind will be useful not only for Tailwind, but also when working with any content tools, monitor the bundle size and try to optimize it. The last rule for Tailwind, use sets of style variants to avoid problems when overriding classes. Instead of passing classes arbitrarily via props, define a set of variants for the component. Use fewer utility classes, group design tokens, and name them semantically. Keep class ordering, minimize your build size, and use sets of style variants. Remember that Tailwind CSS is a useful tool, but not the only solution for all projects.

Hi there. I want to talk about content editable websites and the importance of understanding the content model of a web page. Separating the content from its presentation is the key thought behind this talk. But if we're looking at the content itself, we're actually focusing on what those things are, not what they happen to be rendered into. The outcome of this talk is to break the cycle of content management systems being used to house data for what it looks like. Instead, we should focus on explicit curation versus content-driven experiences, moving away from explicitly curated experiences towards content-driven experiences. Let's put this into practice and build a website. Components aren't bad, but we need to think about the props that go into them. The problem arises when the content structure is modified to match the appearance instead of prioritizing the content itself. Let's correct these mistakes and prioritize the content over the components. Modeling the content structure instead of specific components allows for flexibility and a better content editing experience. Prioritizing content over components ensures a more relatable authoring experience and longer-lasting designs. Start thinking about content early and have conversations before diving into design and development.

Welcome to Securing Server on the Red Applications in the Context of Next.js talk. Next.js brings new challenges for front-end developers with its server-side rendering technologies. We need to consider security in Next.js applications and address the common vulnerabilities listed in the OWASP top 10. Server-side request forgery (SSRF) is a common vulnerability that allows attackers to exploit the server's privileges. Security logging and monitoring failures are critical, as proper setup is necessary to detect attacks. Being cautious with npm packages, addressing identification and authentication failures, and updating vulnerable components are crucial for application security. Database seeding, security headers, and permissions policies are important for application security. It's important to reduce the criticality of an attack, check strict transport security header, and prevent security issues by following best practices. Understanding CSRF vulnerability, image injection vulnerability, and cryptographic failures is important. Broken access control can result in unauthorized access and should be mitigated. Thank you for watching this talk and stay safe!

Welcome to Turning It Up to 11 at React Advanced. Hydrogen, an eCommerce framework built on top of Remix, focuses on efficient data loading. Loading data in parallel using promise.all is four times faster than loading in a waterfall manner. Split promise.all into two when handling data dependencies. Caching static data can significantly improve page load time. Optimize product pages by reducing awaits and prioritizing essential content. Use suspense boundaries and skeleton UI for optimal data loading. Place non-blocking requests before primary data request for better performance. Remix client cache handles caching automatically. Consider data dependencies and prioritize critical content.

Welcome to React Advanced 2024. Gerald Miller and Alessia Bellisario discuss the pairing of GraphQL and server components and its advantages. GraphQL combined with server components has been widely adopted, allowing for initial rendering on the server and optimizing performance. React Server Components introduce a new primitive for rendering on the server and executing server-only code. GraphQL serves as a unifying layer between microservices. Data fetching in client components involves setting up an Apollo Client instance and provider. Best practices include separating data, avoiding overlap between server and client components, and using the preload query component. Optimize network requests in React using suspense boundaries and avoiding multiple requests. Fragments in GraphQL help optimize data fetching for UI components. Use fragments and the defer directive to stream data incrementally. Add suspense boundaries, useSuspenseFragment hook, and deferred directives to optimize data fetching in React components. Combine React server components and GraphQL for streaming multi-part responses and enhancing user experiences.

In this Talk, the speaker discusses how to build smart user interfaces using React and AI. They explore using AI to enhance data interaction in a table component and demonstrate how AI can be used to pre-fill calendar slots in a booking engine. The speaker also explains how to create dynamic UIs with React by adjusting language prompts and specifying UI elements. They introduce LangChain, an open-source framework for building language model applications, and explain how it can be used to generate UIs. The speaker concludes by discussing how JSON data can be used to generate UIs and provides documentation and examples for building UI components.

In this talk, observability in React web applications is discussed, covering Rome agents, open telemetry, and synthetic monitoring. The importance of logs, metrics, and traces in tracking application behavior and identifying issues is explained. The concept of a real user monitoring agent (rum agent) for JavaScript applications is introduced. Instrumenting the rum agent and React applications is explained, along with the caution to be mindful of the bundle size. Traces, open telemetry, and instrumentation are explored, including how Core Web Vitals, traces, and open telemetry can provide insights and enable auto-instrumentation. Synthetic monitoring using Playwright tests and the process of converting tests into monitors with configuration is covered. Finally, running and monitoring definitions in production is discussed, highlighting the ability to evaluate user behavior, simulate activities, and address issues proactively.

Hi, I'm Mark Erickson, and today I'm very happy to talk to you about designing effective documentation, lessons I've learned writing the Redux docs. We'll discuss organizational techniques, practical tips, writing tutorials, and useful documentation tools. Redux offers learning-oriented tutorials and goal-oriented how-to guides. Other documentation categories include reference guides, explanations, readme files, FAQ pages, and release notes. Tips for organizing and writing documentation: consider the target reader, assume prerequisite knowledge, repeat information, cover topics in multiple areas. Writing tutorials for libraries in TypeScript presents challenges but can be tackled with TypeScript-first approach and keeping examples up-to-date. Engaging tutorials involve interactive exercises, diagrams, and formatting, and should be reviewed and improved based on feedback. Overall, documentation is valuable and worth the effort.

Today we will discuss React server components with AI and how to build a better search experience using them. We will learn how to make a Next.js app AI-enabled using the Vercel AI SDK. The Vercel AI SDK's streamUI function with the GPT 4.0 model will be used to make suggestions interactive. We will explore the use of history and conversation in AI and how to continue the conversation and read the result. The concept of generative UI with the vector database will be introduced, along with querying the database for movies. We will process user queries and return movies based on them. The power of React server components in enhancing UI will be demonstrated. In summary, the Talk covers vector embeddings, natural language search, and generative UI.

Hi everyone, I'm Devi O'Brien, a Principal Technical PM at Microsoft, here to talk about Advanced Playwright Techniques for Flawless Testing. Playwright is reliable end-to-end testing for modern web apps, with tests that run in isolation and fast. It supports multiple languages, auto-waits for elements, retries assertions, and handles iframes and Shadow DOM. Playwright also offers features like code generation, UI mode, HTML reports, and API mocking. You can use annotations and locators in Playwright to provide information on issues and organize tests. API mocking is useful for simulating APIs, and you can mock external links and test date/time functionality. Playwright allows you to test time-sensitive functionality, set up tests and dependencies, and run tests efficiently. Join the Playwright community for support and resources. Thank you all for listening!

Is React really dying? React is dead. Let's take a look at the numbers. Svelte is getting 1.5 million downloads per week. Angular is pulling 3.5. Probably not a competitor with React. React dwarfs everything with 25 million downloads a week. React is incredibly popular with 4 million users and developers. Despite some criticism, a survey shows that 71% of respondents liked React, while only 28% didn't. React's flexibility and options can be overwhelming for beginners. React's complexity has increased, causing confusion for beginners. Memory management, overcomplicated architecture, and innovation fatigue are common challenges in React. React 19 is delayed due to suspense issues. React server components are a favorite innovation. Qwik's hydration model is cool. Qwik is amazing, and it would be cool to see something like it for React. AI can help you get 80% there, but you still need an actual developer to tweak and clean up the code. Tab AI keeps your workflow going. React's popularity is undeniable. The momentum behind React is strong, and it's unlikely to fade away anytime soon.

Welcome to the talk on Microfrontends and Betamax. The speaker shares their experience of accidentally building a plugin SDK for microfrontends. They discuss the goals and bootstrapping process, emphasizing the importance of adaptability and separation of concerns. The use of behavior subjects and portal rendering is explained, along with the composition and resilience of microfrontends. The speaker demonstrates rendering REC.js within AngularJS and highlights the challenges of handling communication and deployment. They also discuss managing breaking changes, local development, testing, and shared dependencies. The talk concludes with a humorous anecdote and contact information for further engagement.

Redwood Studio is a companion app for building full-stack JavaScript, TypeScript web applications. It offers features like OpenTelemetry monitoring, GraphQL tools, Prisma ORM integration, SSR preview, and React Server components (RSC) cache support. The Render Routes feature provides a graph of components visible on a page, helping users understand the rendering locations. The RSC payload and analysis feature allows for analyzing the timeline and responses received by the app. The payload and the rendered output can be mapped together to understand component size and structure. Redwood aims to be a full-stack framework that simplifies development and supports both current GraphQL users and beginners. It also emphasizes the flexibility and power of React Server components. Redwood aspires to be the Laravel or Ruby on Rails of JavaScript, offering quick project setup and high productivity.

Hi everyone, I want to share a story about my experience as a junior developer working with a client who had strict technical standards. They required high performance for web and mobile apps, but lacked a measurable way to determine performance. To address this, I created a tool called Flashlight, similar to Lighthouse, that measures mobile app performance. Flashlight provides performance scores and can run end-to-end tests to explore the app. The speaker's dream is to have an easy way to determine app performance without extensive testing. Using AI to automate the tedious task of exploring an app is the speaker's proposal. The speaker explains that the repository for the app exploration tool is open source and will be shared later. The tool requires commands to be run, such as logging in and performing a search. The AI tool helps identify performance issues, suggests using React DevTools for debugging, and recommends using FlashList instead of FlatList in React Native. The AI can continue after errors occur, and controlling the AI's completion of goals can be achieved by adding a human or another AI agent manager into the loop. AI in end-to-end testing is gaining popularity, with companies launching AI-based testing tools. The goal is to automate app exploration using AI and ensure quality checks for performance, accessibility, and security. AI can help QA engineers by automating repetitive tasks and allowing them to focus on more important aspects. The cost of performing one test case using the 4.0 Mini model is usually less than one cent. AI testing with Flashlight is still experimental, but the non-AI part is reliable. Future improvements include running on CI and easy iteration on multiple projects.

This talk focuses on building a fast and accessible website for all users, highlighting the importance of performance and user experience optimization. It emphasizes the need for adaptive implementation to cater to different devices and user conditions. The talk also discusses the factors beyond the developer's control, such as screen size, browsers, devices, internet connection, and sitting position. It highlights the significance of optimizing image components for various devices and the role of browser support and rendering engines. The speaker discusses the use of future APIs and the challenges of browser compatibility, as well as optimizing image formats and bundler compatibility. The talk provides insights on controlling bundler and device compatibility, optimizing CPU usage, internet connection, and JavaScript form submission. It concludes with a proposal to respond with save data instead of effective type for limited internet connections and recommends using React with adaptive hooks for better user experiences. Overall, the talk covers essential aspects of building a fast and accessible website.

I'm going to be talking about modern databases in the React ecosystem. The development work used to be simple, with front-end and backend developers working separately. However, with the rise of Node.js and full stack frameworks like Next.js, the ecosystem has evolved. Now, front-end developers are often writing back-end code, and databases have become a crucial component. In this talk, we'll explore the modern solutions and their strengths when it comes to databases. We'll discuss the changes in the databases world and how React and other frameworks have made accessing databases easier. Serverless databases simplify the complexity of managing databases, but there are considerations like vendor lock-in and limited customization options. AI databases with vector functionality provide deeper searches on unstructured data. Multimodal databases like SurrealDB allow for different kinds of data in one storage. Tools like Prisma, Drizzle, and EdgeDB provide good type safety and ease of use. EdgeDB is a graph relational database that combines SQL and GraphQL, making querying relations easier. Database selection is not permanent, and it's important to consider user needs and stay informed about modern trends. Early adoption of cutting-edge databases comes with risks, but also full-time support. Using the best tool for the job is crucial, and trying new tricks for specific data is recommended.

My name is Mark Dalglish and I'm here to discuss how ReactRouter became a framework. Remix is built on ReactRouter and heavily relies on it. Remix feels like a framework because it has a CLI, manages the dev and build lifecycle, and has strong opinions about the file system structure. Remix embraced Vite as a plugin, allowing developers to integrate it seamlessly into their existing Vite setup. The shift to Vite led to a change in the philosophy of Remix Vite, enabling frameworks to orchestrate all the environment builds and make the framework as a plugin pattern first class. React Router is merging with Remix to make all the build time framework features available to React Router consumers. React Router is now officially a framework as well as a library. The move to integrate Remix into React Router is driven by the exploration of the next generation of Remix. React Router V7 simplifies by dropping the React Native layer and allows flexibility for consumers to use it as a library or as a framework with additional architectural features provided by plugins. The focus is on betting on Vite in the long term, and React Router plans to support React Server components. Thank you to Mark for answering the questions.

Today's talk is called Beyond Testing Library, Testing React Libraries and Library-like Code. The speaker, Lenz Liebertronik, discusses the special requirements for testing libraries, including minimizing re-renders, avoiding tearing, and rendering components granularly. They highlight scenarios where React Testing Library falls short and introduce the Testing Library React render stream as a solution. The speaker demonstrates how to test hooks, multiple hooks, and assert re-renders using different techniques. They caution about potential issues with React upgrades, test-only components, ACT batching, and Suspense boundaries. The speaker shares real-world usage of the render stream library and discusses the limitations of correlating renders with DOM commits. They emphasize the importance of testing libraries and gradually optimizing code. They also mention the benefits of using the testing library and conclude with gratitude and a Dutch lesson.

A software engineer from AGGrid discusses profiling and optimization in React DevTools and Chrome DevTools. The React DevTools allow for analyzing and optimizing renders, and can help improve Core Web Vitals. Chrome DevTools provide in-depth performance analysis and optimization options. The engineer shares specific strategies for optimizing rendering, animation, and layout thrashing. They also discuss performance profiling and benchmark testing, as well as testing tools and the performance testing process. The speaker emphasizes the importance of exploring resources and metrics in Chrome DevTools.

I'm going to be speaking about concurrency within React and how you can use it to improve performance within your applications. Concurrency is crucial for optimizing responsiveness and ensuring a good user experience in complex applications. React breaks up the rendering process into render and commit phases, allowing interruption of the render phase for prioritizing user interactions. React's task scheduler handles tasks in small chunks, ensuring a fluid user experience and responsiveness. High-priority tasks include user interactions, while lower priority tasks involve fetching data or rendering long lists. React introduced new hooks, useTransition and useDeferredValue, for handling state update priorities. The deferred value hook allows for deferring the updates of non-critical UI values, while Suspense for Data Fetching improves the performance of data fetching in React applications. Concurrency is useful for handling real-time search inputs, seamless tab or component switching, rendering large lists, and animating transitions. However, there are drawbacks to concurrency, such as potential delays in non-urgent updates and limited benefits for expensive components. Concurrency may add CPU strain and requires an understanding of React's background behavior for effective debugging. Use suspense on parent level components for data fetching. Performance profiling can help test the effectiveness of transition hooks.

I'm Daisuke Kato, an open source developer. I've developed React libraries like Zest, Jota, and Valsio. Now, I'm working on a new React framework, Waku. It's a team project that started a year and a half ago. Recently, we added support for server functions. This talk is about server functions and React Server Components (RSC), which allows running React on a server. RSC includes server components and functions and can render components at build time. It leverages serialization provided by a React library. Server components are an extension that allows rendering on the server and merging with client components. Let's explore the implementation with code. RSC allows the use of server and client components. The server serializes the client component into the RST payload. A client reference acts like a URL and is used to retrieve the actual client component. Creating a client reference involves code transformation. Server functions allow the client component to call a function on the server. Server function and client component are both functions that need to be serializable. Creating server references has multiple ways. The framework transforms user code for different situations. Waku now supports server functions. Supporting server function is a challenging task, but we've done it. Thank you for your talk.

I'm going over the new event loop in React Native, which is one of the more interesting parts of the new architecture. The new architecture includes the JSI for synchronous communication between layers, new Native modules for type safety and code sharing, and the Fabric renderer for prioritized rendering and support for modern React 18 features. The React Native event loop works differently from the previous architecture, executing tasks and updating rendering. The React Native team can now schedule JavaScript code within React components to execute at specific times, allowing for control over the execution schedule. React Native can now prioritize rendering urgent events, resulting in a more synchronized and flicker-free UI. The goal of the new event loop specification is to align React Native more closely with the web, providing capabilities and behaviors similar to the web. Migrating to the new React Native architecture aims to minimize fundamental changes for existing codebases and ensure proper support from library maintainers.

I'm Nadia, a developer experienced in performance, re-renders, and React. The React team released the React compiler, which eliminates the need for memoization. The compiler optimizes code by automatically memoizing components, props, and hook dependencies. It shows promise in managing changing references and improving performance. Real app testing and synthetic examples have been used to evaluate its effectiveness. The impact on initial load performance is minimal, but further investigation is needed for interactions performance. The React query library simplifies data fetching and caching. The compiler has limitations and may not catch every re-render, especially with external libraries. Enabling the compiler can improve performance but manual memorization is still necessary for optimal results. There are risks of overreliance and messy code, but the compiler can be used file by file or folder by folder with thorough testing. Practice makes incredible cats. Thank you, Nadia!

tldraw is a canvas and a whiteboard SDK that can be integrated into React apps. It allows for high-performance rendering using the DOM and React. tldraw's canvas is powerful and can be enhanced with Vision models for image creation and AI utilization. It enables easy iteration and updating of designs based on annotations. tldraw can be used to create UIs, complex applications, interactive things, calculators, ASCII art, and more. It explores the use of AI on the canvas and can generate images, code, flowcharts, and content. tldraw focuses on performance optimization, AI model exploration, security, usability, and accessibility. The Talk also discusses the business model, future plans, and the vision of building a plugin community for the canvas.

I'm super excited to be here today, giving my first live talk at an in-person conference. Dominik, the maintainer of React Query, walks through the API design decisions, including success stories, trade-offs, and mistakes. Tener Linsley designed React Query's medium-sized query API to be minimal, intuitive, powerful, and flexible. Major versions in open source require marketing efforts, but not primarily for adding new features. TypeScript is crucial for building projects and managing user demands in open source can be challenging. The addition of the max pages option improved performance and avoided unnecessary refetches. Inversion of control gives users flexibility, but mistakes can happen in API design. Open source requires time management and feedback from users. API design is influenced by typing ease and good TypeScript support. Getting involved in open source involves trial and error and joining community platforms like TanStack Discord. Dominik's journey started during the pandemic and he can be found on Twitter, TanStack Discord, and his blog.

Today's Talk covers creating videos with React, including using Puppeteer and FFmpeg to build videos frame by frame. The ReMotion library offers advantages such as declarative and reusable components, versioning, and automation. The Talk also demonstrates building a video with ReMotion, embedding previews in React, and customization options. It explores rendering at scale with ReMotion's Lambda or Docker options and the rendering process using Lambdas.

In this Talk, the speaker discusses how to enhance animation in React apps and optimize animation in browsers. They explain the browser's animation pipeline and the importance of avoiding frame drops. The speaker compares CSS and JavaScript animations, highlighting the benefits of using the requestAnimationFrame API. They also discuss combining CSS and JavaScript animations using the Web Animation API. The Talk concludes with tips on avoiding redundant calculations and provides additional resources for further learning.

React Jam is an event that showcases the awesomeness of using React for game development, with options for DOM-based, 2D, and 3D games. React offers development tools and optimizations for game development, along with a supportive open-source community. Participating in React Jam and creating games with React can improve skills and provide opportunities to showcase programming abilities.

In this talk, the speaker introduces using React Native with Expo to build mobile applications as well as web output. They explore the features of Expo Router, including file-based routing and CSS support. Expo Router also allows for universal links and web layouts, making it possible to build for different platforms from a single code base. The talk covers SEO, meta information, and API routes with Expo Router, and mentions the use of monorepositories with Next and Expo or React Native. The speaker discusses the future of Expo Router, including the upcoming Version 4 and the potential use of ReactStrictDOM and React Server Components. They also highlight the benefits of bringing Tailwind-CSS to React Native.

Chandra Carney discusses accessibility in 2024, highlighting the importance of equal access for disabled people and the evolving view of disabilities as civil rights. The talk covers the global accessibility standard WCAG, with versions 2.0, 2.1, and 2.2, and the European standard EN 301549. Updates to laws such as the ADA in the US and the Web Accessibility Directive and European Accessibility Act in the EU are also discussed. The EU reinforces the importance of inclusion and holds businesses accountable for accessibility. Proactive accessibility is emphasized as a requirement and everyone's responsibility.

Today, we explore server-driven UI in React Native, which allows for scalable and complex UIs without incurring tech debt. Project Lightspeed simplifies UI definition and reduces code duplication. Server-driven UI, used by industry giants like Shopify and Airbnb, enables flexibility and platform consistency. Additionally, Evan Bacon's talk at ReactConf introduces the vision of universal React server components in server-driven UI.

Nested Interactive Elements in Nightmare Accessibility can cause issues with screen readers and other assistive tools, making it difficult for users to interact with websites. Mitigation strategies include unnesting elements, using CSS overlay, and being cautious when modifying roles. It is recommended to involve users of assistive tools in focus groups and share solutions online.

Welcome to the talk, Art & Entropy, Introducing Chaos in Your Front-End. Chaos engineering is a practice invented by Netflix in 2011 to observe how a system reacts to intentional disturbance. Applying chaos engineering to the frontend is experimental but necessary, as a broken frontend can negatively impact the user experience. Intentional perturbations in the frontend can be induced through various areas such as HTTP requests with slow 3G network or unstable Wi-Fi. Tools like chaos frontend toolkits can be used to experiment with chaos engineering in the frontend and embrace breakage as part of the application's story.

Today's presentation is about full stack development using the new Oracle 23 AI database and Parse Platform. Parse Server simplifies mobile development by providing a flexible backend solution. The new Oracle 23 AI database container offers benefits like JSON support and pluggable database administration. The Parse Server storage adapter allows for easier management and testing of APIs. The stack also includes features like GraphQL, custom Oracle code execution, message queues, and Oracle Spatial for geofencing and trucking applications.

Visual Regression Tests are like unit or integration tests but focus on the visual part, allowing developers and QA personnel to identify and address any changes. Challenges in detecting UI changes include elements that are not visible to the human eye and misalignment of elements. Use cases for Visual Regression Tests include testing design system components, responsive designs, and browser renderings. Building a Visual Regression Test Tool involves handling animations, network requests, and flakiness. Docker is the best solution for resolving visual regression issues, and finding the baseline for comparison can be challenging but is handled by the testing tool.

Today's Talk explores modern front-end frameworks React, SolidJS, and Quick. React's popularity is attributed to its component-based architecture and extensive ecosystem. SolidJS distinguishes itself with fine-grained reactivity, efficient memory usage, and developer-friendly API. Quick (QUIC) stands out for its fast load times, resumability, server-side rendering, and prioritization of developer experience. QUIC's on-demand loading feature improves initial page load time by deferring non-critical code execution.

This Talk introduces the concept of being a 'React bad boy' by ignoring best practices and optimizing React rendering. It explains how to avoid unnecessary rerenders using React.memo and React DevTools. It also covers advanced techniques like isolating state changes and lazy loading hooks. The Talk explores reducing component rerenders using Svelte stores and optimizing with swap stores in Redux. These techniques improve React performance without the need for major refactors or rewrites.

The Talk discusses the future of web frameworks, suggesting that DSLs will be the way forward. Wasp is introduced as a tool for generating code for client components, server functions, and database models. The benefits of DSLs in web development are highlighted, including simplifying complex tasks and enabling collaboration with AI. Wasp is praised for its ability to capture full-stack engineering tasks and has gained popularity in the web development community.

Today's Talk discusses empowering NX with AI and building an AI-powered documentation system. NX is a powerful build system with smart features like project graph analysis and dependency management. The AI features include an assistant for streamlined navigation of documentation, AI error explainer, and resource allocation optimization on NX Cloud. The AI-powered documentation system uses embeddings and vector matching to find relevant Docs, utilizing tools like OpenAI, GPT, Superbase, and Vercel's AI SDK.

In this talk, the speaker introduces CreateNextApp and CreateT3App as tools for quickly setting up Next.js projects. CreateT3App has a modular CLI that allows users to select specific technologies. The speaker also discusses E3env, which ensures control of environment variables, and T3 Turbo, a monorepo version of CreateT3App that offers flexibility for installation and deployment.

Hamza Hawi, a software engineer at the Autonomous Robotics Research Center, discusses the use of React and Leaflet in robotics. The research center utilizes a mixed fleet of robots and relies on React for mission planning software, while Leaflet is used for mapping and custom layers. Leaflet offers flexibility for different types of vehicles and supports the creation of custom layers like image and video overlays. Additionally, the talk mentions the use of video overlays for weather forecasts and optimizing joystick usage with a strategy design pattern.

This Talk provides an overview of an open-source guitar tuner project, covering topics such as pitch detection, web APIs for microphone access, implementation with React and XGS, and data visualization. It explores various pitch detection algorithms, including zero crossing, fast Fourier transform, and autocorrelation. The project utilizes the MediaStream API and Audio API to access user media. The implementation is done with React and Next.js, and includes a utility library for performing pitch estimation and detection. The Talk also discusses future improvements for the project, such as noise cancellation and chord detection.

I will talk about my recent project, Waku, and my React libraries - Rustand, Jotai, and Valisio. Waku is a React framework that depends heavily on React Server Components (RSC) and aims to make capabilities like code splitting, routing, data fetching, and SSR available to developers. It uses React components based on RSC for reusability and provides a fast experience with VIT, hot reload, and hot module replacement. Waku is under active development, aiming for V1 alpha and exploring Waku-specific features. Deploying Waku apps on Vercel is supported, and a plugin system is in consideration for extended support.

AI offers opportunities for React developers to code faster and automate tasks. Generative AI is a crucial area for developers to focus on. Working with AI APIs and RAGS can open up new possibilities for projects. Orchestration frameworks and tools like Lanchain and relevance help chain tasks together and work with different AI models. AI is a supplement to human capabilities and learning to code with AI can help developers push boundaries and become better.

Today's Talk explores the blurring boundaries of infrastructure design, driven by user involvement and evolving technology. User technical literacy and changing technology are reshaping the design landscape, blurring the lines between interface and infrastructure design. Privacy and user needs now play a crucial role in infrastructure design decisions. React's experimental APIs and common UX tools aid in designing infrastructure with user needs in mind. Identifying concerns and security vulnerabilities and collaborating with cross-functional partners are essential for robust infrastructure design.

MDEdit is a tool that converts Markdown into HTML and provides a what-you-get editor. Progressive web apps offer a comparable user experience on both desktop and mobile devices. The Service Worker allows web apps to remain functional even without an internet connection. The Persistent Storage and File Handling APIs enable web apps to store data and access files on the client's device. Project Fugu provides new APIs, including the Font Access API, to bridge the gap between native apps and web applications.

Today's Talk explores the concepts of async local storage and React context. Async local storage is a useful API for retrieving values from a parent component without passing them through multiple components. React context, on the other hand, allows for the creation of context instances in parent components and consumption in child components. The Talk also discusses server actions in React, their limitations, and the use of async local storage in server actions, with an example Cloudflare worker handling web requests and authentication.

This Talk explores the similarities between React and PHP, particularly in building a guestbook. It showcases the shift towards back-end development and the use of modern PHP frameworks like Drupal. The integration of front-end code in the back-end is discussed, as well as the benefits of React server components. The comparison between PHP 99 and React 2024 highlights the advantages of using React in PHP development. The Talk concludes with excitement for the future of JavaScript, React, PHP, and Drupal.

The Talk discusses internationalization for server components and the challenge of loading translations efficiently. It suggests using import statements in JavaScript to optimize message loading and eliminate the need for namespaces. Tree shaking and tools like Paraglide.js can help minimize message delivery and simplify the process. Overall, the Talk emphasizes the importance of efficient internationalization practices in building multilingual apps.

This Talk explores the experience of shipping server components in production and highlights the benefits and challenges of using Server Components in Next.js apps. The Talk discusses the deployment of UploadThing and the use of AppRouter for safe production usage. It delves into the implementation of different layouts, data fetching, and code centralization for improved performance. The Talk also covers the use of server components for performance optimization and latency handling. Additionally, it explores the use of Edge and Lambda for partial pre-rendering and the challenges faced with webpack performance and hydration. Overall, the Talk emphasizes the benefits and challenges of working with Server Components in Next.js applications.

Today's Talk covers native features in browsers, including upcoming ones and the Interop Project. Native features offer speed, compatibility, and improved debugging. Notable examples include dynamic viewport units, flexbox/grid gap, container queries, and motion path. The Interop Project ensures consistent web platform features across different browsers. Upcoming features like native CSS nesting and entry/exit animations are on the horizon.

Conflicts in software development often arise from the roles of victim, persecutor, and rescuer in the drama triangle. Shifting to a creator role helps navigate conflicts by focusing on learning and improving. Navigating conflict involves preventing rescue, providing feedback, and challenging others. Managers can play a crucial role as coaches instead of rescuers. By encouraging a shift to the empowerment dynamic, unnecessary drama and conflict can be avoided.

The Talk provides a personal human toolkit for debugging human interactions by focusing on depersonalization, understanding power dynamics, setting boundaries, managing emotions, repairing ruptures, and embracing repair. It emphasizes the importance of owning mistakes, recognizing power differentials, and speaking truth to those in positions of power. It also highlights the significance of setting boundaries, both emotional and temporal, and managing dysregulation. The Talk encourages investing in human debugging tools and learning to be better humans together.

SolidStart is an efficient, unopinionated, and ergonomic full-stack framework that provides great defaults and flexibility. It includes features such as a bundler, a serializer, a server, and a router. The serializer, Seroval, enables streaming and real-time state synchronization between server and client. SolidStart offers powerful file routes, RPCs, and single-flight mutations. It is recommended for building UIs in full applications, Spark, single-page apps, and native apps.

This Talk explores the future of React 3 Fiber and its potential for building immersive 3D worlds and video games on the web. The challenges of building immersive 3D apps and the solutions provided by React 3 Fiber are discussed, including decoupling simulation state updates and enhancing scheduling with stable references. The concept of data-oriented programming and the use of ECS (Entity-Component-System) design pattern for composable data in React 3 Fiber are explored. The Talk concludes by emphasizing the future focus on enabling data-oriented workflows and the integration of a built-in scheduler in future versions of React 3 Fiber.

Computer ethics is the set of agreed upon principles that govern the use of technology, and integrating ethical frameworks into the decision-making process reflects a commitment to fostering a compassionate technological landscape. Incorporating ethics early in the product development cycle can avoid exclusions and financial losses, and can be done through premortems and check-ins. Promoting proactive inclusivity involves validating and prioritizing goals, conducting user testing, and following the Association for Computing Machinery's Code of Ethics. Additional resources include books on computer ethics and the Design Justice Network.

Approximately one year ago, we started a modernization effort, but faced challenges with company politics and the reality of our tech stack. Lesson one is the importance of aligning goals and understanding current problems. Lesson two is the importance of getting everyone on board and committed to the project's success. Lesson three is repeatedly telling stakeholders why big technological changes are worth the investment.

Nathan Mars, tech lead at Grafana Labs, introduces observability for JavaScript applications, highlighting the effectiveness of debugging and troubleshooting with observability. Open Telemetry is presented as a standardized way to obtain system data and Grafana as a platform for monitoring metrics, logs, traces, and profiles. The talk also emphasizes the applicability of observability to the front end using GrafanaFerro to collect metrics like page load, errors, and user sessions.

Today's Talk discussed web performance and internet penetration in Africa, highlighting the challenges of limited data plans and less powerful devices. The importance of considering internet accessibility when developing websites was emphasized, as slow-loading websites can result in negative reviews and lost customers. The concept of resumability, which delivers only necessary JavaScript for improved performance, was explored, along with the implementation of the QUIC framework to achieve this. QUIC framework was also discussed in terms of lazy execution and its ability to improve website performance and resource consumption.

Today's Talk explores Web Monetization, a JavaScript API that simplifies payment for web content. The challenges of monetizing web content and possible solutions are discussed, along with the drawbacks of advertisements and subscriptions. Content creators face challenges with platform restrictions and delayed payments, but web monetization offers a solution. The advantages of web monetization include instant payments, privacy-conscious transactions, and lower entry barriers for creators. The Talk concludes by encouraging involvement in the web monetization community and the development of web monetization utilities and plugins.

Swift responsiveness is essential, and LLRT is a new JavaScript runtime optimized for serverless environments that offers improved performance and cost savings compared to other runtimes. LLRT achieves fast performance by removing complexities, leveraging Rust, and optimizing the AWS SDK for Lambda. It starts almost six times faster than Node.js and provides a cost saving of 2.9 times and a time saving of 3.7 times compared to Node.js.

The Talk discusses how the engineering team at Expedia improved the performance of customer flight search by using various metrics and techniques. These include prefetching resources during browser idle time, preemptive search to predict responses, and optimizing performance through micro queries and a micro front-end architecture. The team also focused on improving build and package size limits for better code analysis. Performance monitoring and automation were implemented for ongoing performance improvements.

Today's Talk introduces Web5, which combines the best of Web 2 and Web 3 to build a decentralized web. Web5 consists of three pillars: decentralized identifiers, verifiable credentials, and decentralized applications. Verifiable credentials are used on platforms like LinkedIn, while decentralized web nodes act as data stores for web apps. Web5 allows users to own their data, reduces friction in onboarding, and enables example applications like Universal Music Playlist and Connected Travel. Building for Web5 presents challenges such as key management and data usage, but there are resources available to learn more about the technologies.

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

AWS SafeKit is a market leader in airport control software, managing the entire operation of an airport. Microfrontends extend microservice architecture to the frontend, allowing components to be combined at runtime. Module federation from Webpack is a popular approach for loading remote modules. Microfrontends offer benefits such as incremental upgrades and deployment independence, but also come with downsides like poor performance and complexity. Microfrontends are recommended for large-scale enterprise applications with distinct requirements and the need for experimentation.

AI in front-end development empowers developers to take on more ambitious projects and innovate at a faster pace. Natural language is a new programming language that can be used for coding, learning, and automating complex tasks. However, it is important to remember that AI is a supplement to human capabilities, not a replacement. Developers need to evolve their skills and stay ahead of emerging technologies to work effectively with AI. The demand for AI engineers is high.

This Talk, titled 'Fortify or App Fortified', discusses the concept of treating your application as a fortress to protect it from outside threats. It highlights the importance of web application security and the risks associated with broken access control, injection, and cryptographic values. The Talk also emphasizes the need to apply best practices and use frameworks' security features. Additionally, it addresses the security concerns related to user-provided URLs, style injection, and JavaScript injections. The summary concludes by emphasizing the importance of keeping dependencies updated and following best practices to ensure project security.

JavaScript is widely used in web, mobile, and backend development, and now it is also being used to create TV apps. TVs with web-based operating systems can be targeted with JavaScript applications, and React is commonly used for TV app development. React Native allows for cross-platform TV app development, except for Roku. User interactions and focus management are important considerations in TV app development. Performance optimization is crucial for TV apps, as TVs have lower device scores and limited RAM. Spatial virtualization can significantly improve TV app performance.

JavaScript became successful due to its association with the browser as the only runtime. WebAssembly (WASM) is a virtual machine that can run anywhere and has a different computation model. WebAssembly code can be analyzed and converted into a more readable format. It can be used to accelerate code and enhance performance. Check out Austin Theroux's repository for examples.

Drizzle is a TypeScript ORM that leverages SQL knowledge, is fast and has its own ecosystem. It manages database schema and supports prepared statements for peak performance. Drizzle provides a complete set of tools, including Drizzle Studio and query runners. The ecosystem includes GraphQL integration and community-built tools.

Today, we're going to talk about the Biome Analyzer, which is not just a linter or a CLI tool. It takes advantage of multi-threading, channels for communication, and caching to achieve high performance. The analyzer complements the parser and provides features like import sorting and emitting new diagnostics. It is LSP ready, can automatically sort JSON keys, and can be used as a CLI tool for enforcing refactors. The Biome Analyzer showcases its impressive performance in handling large codebases in a video demonstration.

Today, I'll be talking about GspotJS and Gaussian Splatting, a revolutionary graphics pipeline that can render high-fidelity scenes at 144 FPS. Gaussian Splatting is a technique that converts data directly into an image using Gaussians. GspotJS is a lightweight JavaScript library for Gaussian Splat rendering, with features like 4D rendering. The library aims to provide a simple and speedy way to view Splats on the web, while more advanced applications can use Mackellog Gaussian Splats 3D. Both Gaussian Splatting and gSplotJS are open-source.

The Talk discusses the JavaScript oxidation compiler (OXC) project and the impact of performance engineering. The OXC project consists of JavaScript tools written in Rust, including a parser, linter, and resolver, that are significantly faster than existing alternatives. Testimonials highlight the progress of the OXC project and the speed and effectiveness of the OXLint tool. The emphasis on performance in OXLint is demonstrated through cross-file linting and parallel processing. Performance improvements in the OXC project are achieved through benchmarking and can drive innovation in JavaScript infrastructure. The talk also discusses the need for faster website loading and the goal of creating a new minifier for better compression and performance in OXC.

Today's Talk explores the complexity in code and its impact. It discusses different methods of measuring complexity, such as cyclomatic complexity and cognitive complexity. The importance of understanding and conquering complexity is emphasized, with a demo showcasing complexity in a codebase. The Talk also delves into the need for change and the role of refactoring in dealing with complexity. Tips and techniques for refactoring are shared, including the use of language features and tools to simplify code. Overall, the Talk provides insights into managing and reducing complexity in software development.

This Talk provides an introduction to cryptography with Node.js, covering encryption concepts, AES-256-CBC algorithm, initialization vector for encryption, key derivation function and salt, randomness and key agreement, key distribution and RSA, signing and verification, public key certificates, and trust in certificate hierarchy.

WebAssembly is a cost-effective way to distribute computation and allows for code reuse and performance optimization. It can be used for running bioinformatics tools in the browser without setup, but running it on the server or smaller devices may have limitations. WebAssembly is best suited for playgrounds, small-scale simulations, audio and video processing, and upload pre-processing. It offers few benefits outside the browser for server-side applications, but can be useful for running user-provided code and serverless functions.

JavaScript's power and versatility make it the programming language of choice for consumer applications worldwide. A JavaScript engineer should understand how things work, even if they don't know everything. The Talk discusses modifying websites, uncovering game rigging through developer tools, analyzing fetch requests and overrides, refactoring and state management, and website modification. The speaker shares personal experiences and highlights the importance of understanding and being able to modify code in real-time.

HTMX is a JavaScript library that extends HTML and works with a JSON API. It generalizes the functionality of links and forms, making any element a potential hypermedia control. HTMX simplifies the implementation of hypermedia functionality with a dozen core attributes. It can achieve powerful UI results without writing much JavaScript. HTMX complements JavaScript libraries and enhances user experience by providing functionality that the browser lacks.

The Talk discusses browser automation using the Worker's Browser Rendering API, which allows tasks like navigating websites, taking screenshots, and creating PDFs. Cloudflare integrated Puppeteer with their workers to automate browser tasks, and their browser rendering API combines remote browser isolation with Puppeteer. Use cases for the API include taking screenshots, generating PDFs, automating web applications, and gathering performance metrics. The Talk also covers extending sessions and performance metrics using Durable Objects. Thank you for attending!

In this Talk about finding balance in leadership, the speaker discusses the importance of prioritizing self-care and delegating tasks. They introduce the concept of glass threads as high priority tasks that require close attention and provide examples of how to manage them effectively. The speaker also emphasizes the value of collaborative task management and execution, as well as the benefits of delegating tasks to empower team members and promote their growth. Overall, the Talk highlights the need for leaders to find a balance between their own well-being and the success of their team.

Today's Talk discusses the importance of technical content creation for developers, including the benefits of becoming a technical content creator and the personal growth it offers. It emphasizes the value of sharing knowledge and experiences through articles, videos, and open source projects to gain recognition and respect from the community. The Talk also provides tips for creating engaging technical content, sharing it across social platforms, and staying connected with the developer community.

Cognitive load is the amount of available memory and cognitive resources a person has, and cognitive overload occurs when the load exceeds what can be sustained. Various factors, including disabilities and external factors like stress, can affect cognitive load. Attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD) impact cognitive load differently, and instructional design can help reduce cognitive load for individuals with these conditions. Understanding cognitive complexity in code, optimizing the development environment, and minimizing distractions are important for managing cognitive load. Multitasking increases cognitive load, and using organizational systems, automation, and constant learning can help mitigate cognitive load and improve productivity.

Hello, everyone. My name is Johnny Feket, and I'm a software engineer and an entrepreneur. Today, I'm here to talk about something we all need a little reminder of from time to time. Finding joy in our work. Did you know that over 80% of tech workers have felt burnout at some point during their career? And maybe you have felt it too. That's a lot of geeks out there. But you know what could help? Bringing back playfulness so that the otherwise mundane tasks can become exciting once again. How can you incorporate this into your daily grind? Well, you like tech and you like challenges. So why don't you organize mini-hackathons where you and your colleagues can intensively focus on creatively solving projects with new technologies? Or consider pair programming not just as a tool for code review, but as an exciting opportunity to collaboratively debug and creatively solve problems. Or dedicate time for curiosity hours where you can explore a new tech gadget, experiment with a new programming language, or just dive into some interesting coding challenge. Hobby projects are also a perfect way to try out the latest technologies without any external pressure. Helping others and participating in hackathons can also bring joy and sustain your passion for the tech industry.

Active listening is crucial for effective leadership, as it fosters trust, empathy, and meaningful relationships. The BREW framework, which emphasizes being present, reflecting, encouraging, and withholding judgment, can help develop active listening skills. By actively listening, we can understand unspoken words, create a safe environment for expression, and improve relationships. Practicing active listening leads to more fulfilling relationships and effective leadership.

Mateus Palino from Quintana Roo presents From Chaos to Clarity, Leveraging RFCs in High-Performance Environments. Quintana Roo aims to improve delivery quality and reduce design time through RFCs. They have created a group called RFCs Advisors and focused on empowering focal points, training managers, and creating tools, guides, and processes. By implementing tailored training initiatives and optimizing design review meetings, they have increased the number and quality of RFCs, resulting in better solutions deployed.

Open source is a decentralized software development model driven by passion. Maintainers give their time for free, out of passion. Even a small act of rudeness can burn people out. Start with a detailed search when asking for help in open source projects. Providing detailed information in issue reports is crucial. Creating reproducible repositories with minimum details is the best way to get a fix. Follow up on filed issues and show kindness and gratitude towards maintainers.

Transitioning from being a software developer to a manager can be challenging, but offers the opportunity to have a greater impact on the organization. However, some people may miss the hands-on aspect of coding and choose to return to development. The transition may involve changes in company size, hierarchy, and product focus. Soft starts and gaining new skills and perspectives are helpful in navigating the challenges of being a manager. Feedback and further discussions are encouraged, along with sharing presentation materials.

This Talk focuses on the importance of productivity, efficiency, and effectiveness in software development. It highlights the evolving role of leadership, the need for clarity in understanding these terms, and the significance of metrics in driving behaviors and outcomes. The Talk emphasizes the value of aligning with business goals, involving teams in defining productivity measures, and continuously improving productivity to achieve goals.

The Talk covers the importance of preventing and dealing with bugs in software development, with the speaker sharing their experiences and solutions. They discuss the impact of bugs on user experience and revenue, the importance of stress testing and implementing alerts, and the surprising impact of CSS. The speaker also emphasizes the importance of simplicity, monitoring, and refactoring, as well as the need to address security threats and learn from failure. They provide tips for writing postmortems and highlight common mistakes to avoid, especially for junior developers.

This Talk explores the world of coding assistants powered by language models (LLMs) and their use cases in software development. It delves into challenges such as understanding big code and developing models for context in LLMs. The importance of ranking and code context is discussed, along with the use of weak supervision signals and fine-tuning models for code completion. The Talk also touches on the evaluation of models and the future trends in code AI, including automation and the role of tasks, programming languages, and code context.

This Talk explores the role of mindset in software development and the use of AI assistants. It emphasizes the importance of training the AI assistant and the potential impact of outdated beliefs. The conscious mind is discussed as the gatekeeper to thoughts and feelings, influencing our actions and results. Mindful media consumption and prioritizing mental health are also highlighted, along with the need to support team well-being. The Talk concludes with the significance of fitness in supporting mental health.

In interviewing senior talent, it's important to find the intersection between the candidate's knowledge and the company's requirements. Traditional assessments have shifted focus from technical skills to soft skills. Problem-solving approach, ownership, independence, and emotional intelligence are key traits to assess in senior candidates. Evaluating mindset, career stage, and judgment based on feelings can provide insights into a candidate's characteristics and progression.

Tech leadership is more about people than tech, as tech problems are usually people problems. Developing soft skills, such as active listening and giving feedback, is crucial for tech leaders to build high-performing teams. To solve people problems, step away from the issue, reflect, and communicate with others. Transitioning to a tech leadership role requires specific education and resources, while choosing between management and specializing involves understanding personal strengths and goals. Maintaining momentum and support requires tracking progress, building a CV, and seeking assistance when needed.

Today's Talk focuses on the importance of mental health in software development and engineering. The pandemic has highlighted the need to raise awareness and address mental health issues in the tech industry, which has seen a significant impact on productivity and well-being. Common mental health issues in the industry include anxiety, depression, burnout, and imposter syndrome. Solutions include promoting work-life balance, empathy, upskilling, mindfulness, and regular breaks. Maintaining mental well-being involves being involved in tech communities, setting realistic goals, embracing criticism, finding support, and prioritizing sleep.

The Talk discusses the challenges faced by engineering leaders in their daily work and offers strategies to manage chaos and improve productivity. It emphasizes the importance of organizing, prioritizing, and delegating tasks, as well as maintaining focus and managing overload. Delegation is presented as a way to scale as a leader and promote growth within the team. The Talk also suggests using techniques like the Eisenhower matrix and protecting focus time to enhance productivity.

Design systems are accelerators for development and every web or app developer will come in close contact with them. The design system maturity model simplifies the stages of maturity from Nebula to Supernova. Building a full-fledged design system requires close collaboration between designers and developers, a clear vision and strategy, and strong governance. Continuous improvement and evolution are essential for a mature design system, as well as aligning the design system with business goals and accommodating changes in organizational structure. Documentation and culture compatibility play a crucial role in the success of a design system.

The Talk explores the AI-assisted programming paradigm shift and the evolution of software engineering. It discusses the limitations of large language models (LLMs) and highlights the importance of balancing forces in software engineering. The future of programming is seen as models solving problems based on datasets. The Talk emphasizes the responsibility of creating a better future and the need to strike a balance between utilizing tools and building problem-solving skills. It also touches on the human dependence on AI and recommends resources for further learning.

This Talk introduces WebXR and VR experiments, showcasing examples and encouraging audience engagement. It explores the possibilities of WebXR and AR games, emphasizing the versatility of A-frame for creating AR and VR projects. The Talk also covers asset customization, animations, and augmented reality using LiDAR scanners. It highlights different types of virtual reality experiences and the potential of Apple Vision with WebXR. The speaker emphasizes the importance of community, developer experience, and starting early in WebXR development.

The Talk emphasizes the importance of maintaining a second brain, a curated collection of digital notes, to enhance memory retention in software engineering. Building a second brain helps in recalling information, problem-solving, and retention. It is easy to create your own second brain using various tool options like Notion, Obsidian, Reflect, Rome Research, and Tana. Starting with small, self-contained notes and gradually expanding to form a mesh of related information is recommended for effective learning and retention.

As a software engineer, achieving success in software development requires having a strategy and tactics. However, obstacles such as unnecessary meetings and miscommunication with clients can hinder progress. The methodology used in software development is more important than the programming language. Soft engineering is about understanding strategy and tactics and finding efficient solutions to problems. Software architecture should be aligned with business goals and objectives. Documentation is important for scalability and avoiding miscommunication, but finding the right balance is key. Task efficiency and simplicity in code design are crucial. Embracing simplicity and improving documentation can lead to better software architecture. Communication and collaboration between management and engineering teams is essential for making informed decisions.

As a software developer, the entanglement between people and the software they develop is important. Legacy software poses challenges due to lack of time, understandability, and optimization. Legacy systems in health care face similar challenges. Microsoft's evolution and innovation highlight the value of change. Developing adaptable and user-friendly software requires considering the interconnectedness of all actors.

The Talk explores the art of influence and collaboration in software development. It emphasizes the importance of effective communication, building relationships, and using social proof to increase influence. The speaker highlights the challenges that arise in cross-functional teams and the need for better collaboration skills. Building connections, fostering trust, and addressing team issues openly are crucial for successful collaboration.

AI design challenges include bias, safety, and security. Trust and transparency are important in AI. Design principles for AI include user control, fighting bias, and promoting good decision-making. AI can enable the design process and investors expect to see it included in products. AI empowers individuals to create and share ideas, but managing expectations is crucial.

The speaker, Christian Heilmann, is a VP of DevRel and has worked at Yahoo, Mozilla, and Microsoft. He emphasizes the importance of exploring and modifying games as a way to learn new skills and innovate. He also highlights the value of working in a limited environment and the opportunities it presents for creativity. He encourages developers to contribute to the web and be in control of their own creations. Lastly, he discusses the challenges of navigating the job market and the state of the web in relation to frameworks and npm packages.

May 25th, 1977, the first Star Wars movie inspired generations with its space travel and lightsaber fights. Goran Vukicic built replicas of the P-Droid and found a community of designers who sell 3D designs for printing. Bringing the droid to a conference is challenging but rewarding. The NVIDIA Jetson Ori Nano is a powerful device for running AI models. Building Star Wars droids at home is possible with open-source development.

This talk focuses on the powerful features of CSS and HTML that can level up developer skills and enhance web UI. Scroll-driven animations, popover API, and anchor positioning are explored as ways to create dynamic effects, improve performance, and increase accessibility. The talk also emphasizes the benefits of building presentations with CSS and HTML, separating logic from styling, and leveraging core platform features. Wishlist features for the web platform and the challenges of pushing updates across browsers are discussed.

This talk explores interviewing in the age of AI, discussing the history of interviewing for software engineering and the skills needed for future interviews. It examines the challenges and frustrations of the current interview process, the role of AI in interviews, and the integration of AI in the development process. The shift in interview focus towards collaboration skills and intuition is highlighted, as well as the importance of adapting to the changing landscape and navigating junior interviews with AI. Effective interview strategies with AI are also discussed.

Today's Talk discusses the competition between a developer and ChatGPT in building a data visualization platform. Generative AI is widely used, but ChatGPT is not a direct replacement for developers. Prompt engineering enhances ChatGPT's performance. The future of AI is promising, with open source models and proactive AI agents on the rise. Leveraging prompt engineering and dedicated LLM tools can improve code generation and automation.

React Native and ExpoRouter provide a powerful way to build client-side applications that run on both web and native platforms. Server-driven UI and React Server Components offer dynamic rendering and A-B testing opportunities. Server rendering in native apps allows for the integration of movies and enhances the user and developer experience. The Talk includes live demos showcasing interactions with Spotify and native contacts, as well as currency conversion. Server rendering and React Server Components enable the generation of interactive components and bring modern state and AI to every platform.

The Talk discusses the transition from Create React App to Vite as a more sustainable and popular alternative. Vite is praised for its simplicity, minimal dependencies, and exit strategy. The speaker emphasizes the importance of frameworks like Remix and React Router in providing solutions for common development challenges. The focus is on merging Remix into React Router to create a unified framework, with an emphasis on code splitting, routing, data fetching, and generating HTML. The future direction includes completing React Router 7 and reserving Remix for a different framework build.

Being technically included leads to better results and UIs. Incorporating multiple team members comes with challenges and compromises. The evolution of tools and technologies has standardized industry practices. Closing the gap between developers and designers requires collaboration and a common source of truth. Embracing change and building trust can improve collaboration between developers and designers.

React principles can break down for full-stack apps, but Convex has built a backend and database to address this. The five React principles discussed include reactivity, consistency, overlapping writes, and caching. Convex's database ensures consistency, handles overlapping writes with transactions, and automatically invalidates caches based on relevant writes. Convex combines the best of SQL and NoSQL databases and applies React principles to simplify app development and improve the user experience.

The Talk discusses building cross-framework libraries using React to provide a superior experience for developers across different frameworks. The speaker explains the strategy of rendering React components internally and bridging them to different frameworks. They emphasize the importance of simplicity, understandability, and adherence to best practices in third-party libraries. The speaker also highlights the significance of creating a bridge layer and implementing a complete abstraction to ensure the library's reusability and maintenance.

An overview of the top 3 approaches you can apply to boost the rendering performance of HTML Canvas in your React application, based on the lessons we learned during the development of AG Charts.

In this Talk, the speaker demonstrates how to create an AI chat bot that can answer questions based on information it was never trained on. They build a basic RAG pipeline in just five minutes using live coding. The speaker also shows how to create embeddings and a vector database, set up a vector search index and endpoint, and modify the chat route to enhance the chat bot's capabilities. The program is run and tested, and the Talk concludes with an invitation to join a workshop for more information.

This Talk explores the concept of types and their significance in software development, particularly in relation to TypeScript. It discusses the limitations and advantages of TypeScript compared to other tools like Flow and Ezno. The Talk emphasizes the role of types in bridging system boundaries and improving code quality. It also highlights the importance of type-checked linting and the future of ESLint. Additionally, the Talk mentions the benefits of faster and easier linting with projects like Biome and OXC, and recommends books for further learning.

Open source projects can be successful by finding a large intersection of target users. Making extensions universal can lead to increased popularity and collaboration. Collaboration across ecosystems is encouraged to create more maintainable and extendable architectures. Financial support is necessary for open source projects to be sustainable. Contributing to open source can be done by identifying areas for improvement and actively participating in GitHub workflows.

Today's Talk explores intelligent state management in React, highlighting the limitations of traditional state management and the need for innovation. Xdate's store simplifies state management by providing an easy way to update and retrieve data. The integration of AI and state machines enables the creation of intelligent apps that enhance user experience. The combination of state management and AI is achieved through packages like StatelyAI-Agent and the Vercel AI SDK. State machines, reinforcement learning, and large language models play a key role in creating intelligent agents. Graph algorithms can be used to traverse state machines and improve user experience. State agents store knowledge in short-term and long-term memory, while state machines provide guardrails and automation in multi-step processes. The impact of Language Models (LLMs) on UI performance and the future experimentation of building AI models to identify state machines are also discussed.

Blockchain technology and NFTs provide a decentralized alternative to centralized systems for identity and access control. Smart contracts are immutable programs executed on the blockchain, while NFTs offer unique identifiers and ownership through wallets. Developing the user interface involves using React, Veeam, and Solidity. Deploying smart content requires Remix and a web wallet like Metamask. Integrating smart contracts with React can be done using the Vim library and creating a wallet client. Blockchain technology ensures transparency, trust, and tamper-proof transactions.

The talk discusses building accessible React components and emphasizes the importance of using the correct HTML elements and ARIA roles for accessibility. It explains how to navigate and select options within a form and how to add supplementary text using Aria described by. The speaker also discusses the benefits of using conditional checkboxes and ARIA disabled to improve the UI. Additionally, the talk explores the role of JavaScript in web accessibility and provides recommendations for testing website accessibility.

This Talk explores the concept and advantages of end-to-end encryption in software development. It discusses the challenges of data encryption and conflict resolution in collaborative apps. The integration of end-to-end encryption with conflict-free replicated data types (CRDTs) is highlighted. The talk also covers simplified document sync, real-time sync and encryption, key management, and authentication. Additionally, it mentions the importance of local-first integration, CRDT frameworks, and data search indices.

Labeled Arrows are widely used in conversations, communication, diagrams, and more. The Talk discusses constructing Labeled Arrows, rendering arrows in Canvas, optimizing stroke API calls, using RoughJS for drawing and rendering text, rendering multiline text on Canvas, clearing overlapping area and clipping, comparing clipping and clear rect performance, handling clipping and linking labels to arrows, linking labeled arrows to texts, rotated text and exporting as SVG, masking in SVG and labeling arrows, SVG masking and performance improvements, and optimizing rendering and drawing in Canvas.

React's improvements in performance, such as the introduction of useEffect, have gone unnoticed. useEffect simplifies synchronizing logic and improves performance by eliminating forced layout calculations. Update batching optimizes rendering by combining multiple set-state calls into a single render. React 18 introduces batched set-state calls for faster performance. React Suspense and selective hydration improve user experience and debugging performance issues is best done practically. Server components, recommended debugging tools, and framework choices are also discussed.

This is a background jobs one-on-one talk focusing on the challenges and benefits of using background jobs in software development. It explores the complexity of software development and the impact of distributed applications. The talk highlights the use of Ingest as a reliable solution for executing functions in the background and building drip campaigns. It emphasizes the importance of reliability and architectural choices in software development and discusses the features and capabilities of Ingest, including local development, handling failures, and data retrieval.

This Talk explores the suspense component in React and its benefits in handling fetched data. It delves into the rendering process of React components and how suspense anticipates requests. The offscreen fiber is introduced as a hidden component that ensures state continuity. The Talk also discusses the usage of suspense for handling concurrent queries and throwing promises, as well as the integration of Redux and the upcoming changes in React 19. Overall, the Talk provides insights into the workings of suspense and its potential applications in software development.

AI in game development has evolved rapidly, with generative AI being a focus. However, game developers like Romero Games have concerns about ethics and prefer using AI to automate processes and make creative work easier. AI has been used in games for decades, from path-finding AI to decision trees. Procedural world building and advanced AI technology are pushing the boundaries of FPS games. Different teams within a company have different approaches to the use of AI, depending on their specific needs and requirements.

The Talk revolves around React 19 and the React compiler, highlighting its new APIs, optimizations, and impact on frameworks like Next.js. The React compiler has undergone multiple iterations, resulting in improved performance and alignment with developers' expectations. The integration of React with Next.js simplifies rendering and offers free optimizations. There is excitement about the opt-in approach of React Server Components and the potential of underrated features like suspense and transitions. Overall, React's influence on the JavaScript ecosystem and UI libraries is acknowledged and appreciated.

Mark Erickson explains the history, creation, evolution, and benefits of Redux. Redux was designed to make state updates and action history maintenance easy, incorporating functional programming principles. Redux Toolkit was created to simplify Redux usage. Redux is still a valid choice for its consistent pattern and separation of state from UI. The decision to use Redux depends on the specific use case and the need for centralized state management.

I'm honored to be here today. The past decade has been dominated by single-page apps. Loading JavaScript is about 35 times slower than images on low-end devices. Server rendering involves sending more JavaScript and HTML, increasing payload and effort. React was developed for complex apps, but business needs have pushed towards simpler websites. Metrics for testing frameworks include code execution costs, bundle size, and payload size. Islands, popularized by frameworks like Astro and Fresh, break up apps into sections for server rendering. React's solution is to use islands and communicate in a diffing format. Quik reduces code execution and size, eliminating double-serializing. Frameworks like Solid Start provide tools for server rendering in a lightweight package. WASM frameworks have improved in performance. Next.js partial pre-rendering and HTMX offer solutions for sites with less interactivity.

Web AI in JavaScript allows for running machine learning models client-side in a web browser, offering advantages such as privacy, offline capabilities, low latency, and cost savings. Various AI models can be used for tasks like background blur, text toxicity detection, 3D data extraction, face mesh recognition, hand tracking, pose detection, and body segmentation. JavaScript libraries like MediaPipe LLM inference API and Visual Blocks facilitate the use of AI models. Web AI is in its early stages but has the potential to revolutionize web experiences and improve accessibility.

JSR is a new JavaScript registry that supports TypeScript and offers additional features like GitHub Action integration, provenance attestations, and documentation generation. It provides a simple website with package search, documentation, and a gamified score. The process of publishing a new package in JSR involves creating a JSR.json file with package details and exports, using MPX JSR publish to publish the package, and approving authorization in the browser. However, documentation for the package is not automatically generated and needs to be manually added.

This is a presentation on accessibility and screen readers. The speaker discusses the evolution of screen readers and how they adapted to graphical user interfaces. Accessibility APIs and the accessibility tree are introduced, allowing programs to construct a text database used by assistive technologies. The accessibility tree may vary across browsers and platforms, excluding elements that are not relevant to assistive technologies. The ARIA hidden state and element properties play a role in determining the accessibility of elements, and the accessible name can be derived from text content or specified using ARIA attributes.

The Talk discusses the basics of building a JS engine, highlighting the complexity and feature completeness of existing engines. It emphasizes the possibility of creating a simpler engine tailored to specific use cases and target audiences. The speaker suggests starting anywhere in the process and provides tips on using parser libraries, implementing runtime features, and ensuring correctness through testing. Additionally, the Talk encourages exploring JavaScript standards and engaging with the open-source community.

The Talk focuses on the Nx release command for publishing npm packages in a monorepo setup. It ensures correct package publishing order, handles versioning and change logs, and allows for simulating changes before publishing. Advanced features include configurable versioning, group releases, and support for different languages. Documentation, videos, and recipes are available for customizing and automating releases on your CI system.

AI can help developers become 10x more efficient by leveraging powerful GPUs. Codium is an AI developer tool that can accelerate learning, analyze dependencies, and provide personalized coding experiences. It abstracts away complexity and allows developers to focus on building user experiences. Codium aims to transform the software industry and empower developers to become 10x engineers.

Today, we explore DJ mixing and how deep learning revolutionizes the art by discussing sound processing, extracting features, and using machine learning. Deep learning allows for efficient extraction of audio features and high-resolution track separation. Neural networks can achieve source separation by converting audio to spectrograms and applying convolutional and recurrent neural networks. This has immediate impact on industries such as karaoke and music transcription.

Welcome to the talk about digital ownership using blockchain and NFTs. Explore NFTs and their integration with blockchain. Learn how to create NFTs using Remix on the Sepoia test network. Deploy and access the smart contract on the blockchain. Connect your wallet and grant access to NFTs. Understand the blockchain structure and its authentication capabilities. Connect your wallet with the frontend and interact with it. Explore blockchain connections with Chainlink. Understand gas fees and account abstraction in blockchain transactions. Learn about ownership, account recovery, and data storage on the blockchain. Discover how blockchain can be used for public information, databases, and its energy costs. Gain insights into blockchain functionality and data storage.

This talk focuses on practical approaches for testing Node.js applications, including the use of Dora metrics and the testing trophy strategy. It emphasizes the importance of covering critical flows with integration and end-to-end tests, while also considering the cost and speed of different test types. The speaker recommends mocking third-party services and using snapshot testing, but warns about the potential for false positives. Playwright is suggested as a preferred tool, and the importance of automated test execution is emphasized.

This talk explores the ways AI is being used to shape the future of applications. It emphasizes the importance of an AI-first approach and the potential for AI to enhance various industries, such as aviation. The talk also contrasts the limitations of the AI-on-top approach with the continuous learning and user-centric focus of the AI-first approach. It discusses the importance of building trust through safety, transparency, and browser-based processing, and highlights the potential of AI to address user experience issues and improve accessibility.

This Talk introduces real demos using HTML, CSS, and JavaScript to showcase new or underutilized browser APIs, with ship scores provided for each API. The dialogue element allows for the creation of modals with minimal JavaScript and is supported by 96% of browsers. The web animations API is a simple and well-supported solution for creating animations, while the view transitions API offers easy animation workarounds without CSS. The scroll snap API allows for swipers without JavaScript, providing a smooth scrolling experience.

Maya Chavin, a senior software engineer at Microsoft, discusses generative AI and the core model for LM. The flow of a document Q&A service and the importance of prompts in enhancing it are explored. The injection and querying phases of document Q&A are explained, emphasizing the need for efficient storage, indexing, and computing relevant prompts. The talk also covers the use of embedding models, optimization strategies, and the challenges of testing and validating AI results. Creative uses of LLMs and the impact of AI on job security are mentioned.

The 3JS project has evolved into a community-driven effort with numerous contributors over the past 14 years. It started with 3D engine work in Flash and transitioned to using SVGs for rendering in HTML5 before adopting WebGL. The project showcases various projects and frameworks, including a no-code tool powered by 3.js. The team is working on a new render using WebGPU and developing a new shader language called TSL. The hope is that WebGPU will eventually replace WebGL, offering better control and performance.

TurboPack is a new bundle similar to Webpack, focusing on incremental builds to make them as fast as possible. Challenges in production builds include persistent caching, incremental algorithms, and optimizing export usage. The compilation process can be split into parsing and transforming modules, and chunking the module graph. TurboPack aims to achieve faster production builds through incremental optimization and efficiency. Collaboration and compatibility with other ecosystems are being considered, along with the design of a plugin interface and tree-shaking optimization.

This Talk discusses the importance of performance work and how to drive performance governance. It emphasizes the need to frame data, set meaningful budgets, and understand both engineering and product perspectives. The Talk also highlights the significance of delivering value, establishing solid performance governance, and gaining buy-in from management. Additionally, it emphasizes the importance of measuring performance, optimizing through data, and collecting performance data using tools like Speedcurve and Bugbear Sentry. The speaker also mentions their training program and expresses gratitude towards the audience.

Code bases degrade over time, so it's important to build a protective layer and accept imperfections. Collocation and leaving traces in the code are key for better understanding. TypeScript's strict null checks and explicit typing can improve code reliability. Guidelines and naming conventions are crucial for maintaining a consistent and scalable architecture. Version control complexity is not significantly affected by having multiple components in one file.

Angular and React have similar models of reactivity, with the framework optimizing change detection. Angular introduced signals for optimizing change detection in real-world applications, resulting in improved performance. Deferrable views in Angular allow for lazy loading and significant speed improvements. The island architecture in Angular enables independent component islands without needing hydration. Angular is working on features like partial iteration and zoneless, and aims to support developers in delivering web apps with confidence.

The Talk discusses the importance of removing frictions in the debugging process and being aware of the tools available in Chrome DevTools. It highlights the use of the 'Emulate a Focus Page' feature for debugging disappearing elements and the improvement of debugging tools and workflow. The Talk also mentions enhancing error understanding, improving debugging efficiency and performance, and the continuous improvement of DevTools. It emphasizes the importance of staying updated with new features and providing feedback to request new features.

Building JavaScript Apps and Privacy: Understanding the importance of privacy in software development and the impact it can have on the world. Privacy concerns extend beyond targeted advertising and include data leaks and breaches. The connection of multiple pieces of data by data brokers poses a threat to privacy. The local first approach allows for data storage on local devices while still using a server for synchronization. Implementing local first requires a good database and APIs for data storage. Principles like end-to-end encryption and password protection bring benefits but also present challenges. Moving to privacy-focused analytics, using passkeys for encryption, and secure data sharing are ways to protect user privacy.

ESLint is a popular and constantly improving tool that offers full control and simplicity in JavaScript with native imports. The new Flat Config simplifies the complex tree structure of shared configs and has been in the works for five years. It allows for customization and type generation, maximizing flexibility. ESLint can be used as a formatter and a tool for code mode, providing more control and customization options. It also supports other languages and can be integrated with prettier. Migrating to the Flat Config may be challenging, but compatible packages and tools are available to assist with the transition.

This talk is a ten-year retrospective into the growth of the Vue.js framework as an open-source project. It highlights the challenges faced by open-source developers, the importance of finding balance and managing scope, and the collaborative nature of the Vue community. The talk also discusses the development of Vite as a build tool and the vision for a unified JavaScript toolchain. It emphasizes the need for community alignment, contributions, and testing, while acknowledging the challenges of bad actors in the open-source community.

Today's Talk explores the concept of reusable components, focusing on levels of reusability such as inversion, extension, and nesting. Props are discussed as a means of achieving flexibility and configuration in components. Inversion of control and scoped slots are introduced to give components adaptability. Extension points provide the ability to override specific parts of an application within a single component. The Talk also covers the use of slots and nesting for component flexibility and reusability.

Scalable forms in Vue, approachable for all skill levels, with code reusability and best practices. Front-ends divided into websites and applications, with forms being highly interactive and logic-heavy. Form Components in Vue provide accessible markup, delightful validation, and customizable props. Using vModeling encourages code reuse and collaboration. FormKit offers a comprehensive solution to form problems, including structured data, unique form keys, and robust validation UX. It simplifies form creation, supports CMS-like experiences, and provides advanced features and TypeScript support.

Threads.js, a Vue custom renderer for creating declarative 3D scenes, has gained popularity with over 1,700 GitHub stars, 9K monthly NPM downloads, and a strong developer community. Version 4 introduces performance improvements, on-demand rendering, typing support, and memory management. Event bubbling and primitive creation are key features, along with enhanced memory management and scene inspection capabilities. The roadmap includes translated documentation, a new cookbook, and the launch of post-processing and XR VR packages. Performance enhancements, a new 3D course, and updates to Tres Leches UI library are also in the works.

This Talk introduces authentication in Vue.js and emphasizes that it is not as difficult as it may seem. The speaker explains the concept of authentication and its importance. A code example is used to demonstrate how to implement authentication in Vue.js, including separate UI parts for login, home, and dashboard views. The Talk also covers handling authentication in the Vue.js router, including defining routes, accessing user credentials, and making requests to the backend.

Component testing is a gray area between integration and unit testing. The demo app focuses on the cart component and writing test cases for Playwright component test and VTest. The first cart test encounters a bug with the invisible method in View Test.

Shed CN Vue is a component library that allows for easy customization of components and styling. It is built on top of RedixView, which enables the use of primitives and element customization. Tailwind CSS is used for easy customization of layout, styling, animations, classes, and icons. The documentation provides more details on how to leverage these features.

A single-page application utilized a server-side BFF layer to simplify authentication and data customization. Testing a BFF-based architecture involves contract testing and tool usage. Challenges arise when mocking server-to-server requests in a client-side and server-side architecture. Separate tests should be written for client-side and server-side components, with contract testing to ensure compatibility. Integration testing for the front-end and server-side can be done by replacing microservices with a sub-server.

Handling security in front-end development is crucial, and the OWASP Top 10 is a valuable resource for secure coding. The list of security risks is constantly evolving, and the Nuxt security module provides features like security headers, rate limiting, and cross-site request forgery protection. Frontend developers should prioritize security to avoid information leaks and mitigate risks. Understanding the difference between public and private tokens is important for secure token handling.

Nuxt is a framework for building web apps using Vue and Nitro, driven by a vibrant open source community. Nuxt 4 aims to make the framework more usable and extensible, while focusing on collaboration rather than competition. The modules ecosystem and pluggable architecture enhance Nuxt's functionality and customization options. Nuxt prioritizes user choice and aims for stability and reliability. Nuxt 4 introduces thoughtful breaking changes and is eagerly anticipated by the community.

Hello everyone and welcome to Vue.js Live 2024. In this Talk, Evan Yew, the creator of Vue and Vite, shares a 10-year retrospective on Vue.js, discussing its history, technical impact, and how it is being kept alive. Vue has made significant contributions to the JavaScript ecosystem and is the only mainstream framework that remains independent. The latest release, Vue 3.4, introduced performance improvements and a more efficient reactivity system. Future plans include reactivity efficiency improvements, stabilizing reactive props, and exploring vapor mode. Vue is here to stay and will continue to support the community.

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

The talk explores the dark side of open source, focusing on supply chain attacks and the need for improved security measures. It highlights the dangers of loading external code and the importance of mitigating supply chain risks. The talk also discusses the use of AI and LLMs in code analysis to enhance security. It emphasizes the challenges of sustaining IC maintained open source projects and the future of supply chain security. Lastly, it touches on the variations in open source definitions and the empowerment of the open source community.

The Talk discusses the development of the Jam browser extension, which is a bug reporting tool. It explores the challenges of messaging between different execution environments within a browser and the need for message chunking to overcome size constraints. The Talk also explains how the development team rebuilt the system using a TCP/IP network stack approach, which allowed them to solve messaging difficulties similar to networking problems. The benefits of this approach include a smoother rollout, simpler debugging, and a focus on feature development without worrying about messaging constraints.

The OpenJS Foundation supports the entire JavaScript ecosystem and thousands of open source projects. They follow a neutral nonprofit organization with separate business and technical governance to minimize drama. Rebooting governance and addressing intellectual property can also help reduce conflicts. OpenJS provides collaboration spaces and support in various areas for open source projects. They foster a collaborative environment and invite participation in their projects.

Async local storage is an API that has been around in Node for quite some time and is gaining popularity in other frameworks and runtimes. It allows for easier logging by eliminating the need to pass values through multiple functions. The storage frame in async local storage acts as a map, storing key-value pairs. Tasks and promise continuations are used to perform the next steps in a promise chain. Async Context is a TC39 proposal that adds async local storage to the JavaScript language.

Today's Talk introduces Deno, a next-generation JavaScript runtime with native TypeScript support and improved server-side development features. Deno offers granular permissions for sensitive APIs and includes built-in tools like a test framework and linter. The Talk demonstrates how to use Deno with an existing Node.js project, showcasing compatibility and import features. It also discusses upcoming features like bringing Node modules to Deno and handling file extensions. Overall, Deno provides a seamless transition for Node developers and offers a range of powerful tools and features.

Monorepos are a development strategy that allows you to store multiple projects in one repository, facilitating code sharing and simplifying dependency management. They provide simplified dependency management, improve code reusability, and enable a consistent build, test, and deployment process across projects. Tooling support like Nix, Yarn Workspaces, and NPM Workspaces streamline monorepo development. Code organization and scalability strategies involve fine-grained models, consistent directory structure, and selective dependency installation. Streamlining build processes can reduce build time, and optimizing performance and collaboration involves profiling tools and effective code review processes.

Today's Talk discusses different approaches for implementing real-time updates in server-side applications, including application-level updates and polling. The drawbacks of polling include inefficiency and complexity at scale. Adding extra infrastructure, like messaging systems, can ensure scalability but introduces operational overhead. Prisma Pulse is a system that simplifies change data capture, providing an easy setup for subscribing to database changes and solving scalability issues.

Yash Rajavarma introduces observability and explains its importance for developers. He discusses how OpenTelemetry can empower Node.js applications by providing easy instrumentation and management of telemetry data. OpenTelemetry simplifies the implementation of observability and is designed to benefit developers.

In this Talk, the speaker discusses package resolution in Node.js, covering topics such as CommonJS, ES modules, package.json structure, and package.json loader. The Talk also touches on conditional loading and file extension resolution, module import and export, module type determination based on file extensions and package.json, module resolution strategies in Node.js, and tips for improving loading time in ESM applications.