In this interactive session we will:

• Go through requirements we had for Breadcrumbs in our web apps at Ahold Delhaize.
• Build a generic breadcrumbs component in the layout.tsx mechanism of Next.js so they are automatically added to all your pages.
• Decide what to put in server components, what to put in client components and demonstrate the problems you get when making wrong choices.
• Build a mechanism that lets a page override the generic breadcrumbs.
• Test your knowledge on React during the session with mentimeter questions.

Next.js is a great framework - until you want to deploy it somewhere that isn't Vercel. vinext is a Vite plugin from Cloudflare that reimplements the Next.js API surface from scratch, so your existing app runs everywhere with a single command. In this talk, we'll look at why this exists, how Cloudflare built it in a week using AI, and how close to "drop-in replacement" it actually gets.

The JavaScript ecosystem is longing for a standardized tooling. No more plumbing work, no more choice fatigue and no more analysis paralysis. But how would such a tool look like? Together, we have a look at the newly released Vite+ Alpha and see if the new open source CLI can hold up to its promises, covering developer's tooling needs and let them focus on shipping, especially in an agentic age.

WebStorm IDE is researching developer experience flow state. We found that developers feel it is not productive alt-tabbing between IDE/ AI Agents, Figma and browsers trying to spot if everything matches. It’s a manual process that doesn’t scale when we are getting faster with AI. It's too late if these visual bugs hit a PR review, you've already lost the context needed to fix them without taxing your head space.

Is it possible or even desired to pull this validation directly into the development loop?
We'd like to show you our prototype on how we would like to combine the Figma Plugin APIs, WebStorm and Vitest Browser Mode to automate these checks while you code.

In this talk, we’ll explore the performance limits of SVG when rendering scatter charts with thousands of data points, based on our experience at MUI X Charts. You’ll learn how to identify bottlenecks, performance measuring tricks, and the techniques we use to optimize rendering.