TypeScript Day

Introduction to the Event

Meet our MC and the event's program

Alex Garrett-Smith

Pizzeria del Compilator

We build a pizza configurator live on screen: pick a size and toppings, the price recalculates, and the matching TypeScript object rewrites itself as you click. The payoff comes when we add a new size to the menu and the compiler lists every place we just broke. Attendees leave with the running project.

Martin Ferret

Make the Accessible Path the Only Path: TypeScript Guardrails for Humans and AI Agents

Accessibility bugs rarely come from bad intent. They slip through because nothing stops them when the code is written, and that gap gets wider when an AI agent writes the first draft of a component. This talk shows how to encode accessibility rules directly into React component types, so inaccessible code doesn't compile. Examples include icon-only buttons that require an accessible label, inputs that must be tied to a label, and headings that follow a valid level order. We'll look at how these types guide developers and coding agents alike, where the type system stops being enough, and what still needs linting, automated testing, and human review

Neha Bhargava

End-to-End Type Safety: Building Reliable TypeScript Applications with .NET Aspire

In this talk, we’ll explore how TypeScript and .NET Aspire can work together to build more reliable full-stack applications. We’ll build a practical application that uses a TypeScript client alongside .NET services orchestrated with .NET Aspire, and examine how strong typing can be maintained across the different layers of the system. We’ll look at practical approaches to defining and sharing API contracts, generating or consuming type-safe clients, handling runtime data validation, managing service configuration, and keeping frontend and backend contracts aligned as the application evolves. We’ll also explore how .NET Aspire simplifies local development by bringing distributed services together in a single development environment, while its built-in tooling and observability capabilities make it easier to understand what is happening across the application.

David Aniebo

Typescript Is SO SLOW...Or Is It?

Building apps with TypeScript is the norm these days, but there's one major pain point, speed. At first, everything runs smoothly, but as your project grows, build times drag, your editor lags, and even basic code completion slows to a crawl. The good news? A solution has been hiding in TypeScript’s documentation for years, overlooked but incredibly effective. In this talk, we’ll uncover this hidden gem, optimize your setup, and keep TypeScript fast as your app scales.

Mike Hartington

10 TypeScript tips and tricks for frontend developers

In this talk, Alain will present 10 tips and tricks for using TypeScript in an easier, more productive way.

Alain Chautard

DaloyJS - The first TypeScript REST API framework built for secure AI-assisted services

Your AI wrote the API. Who wrote the security? Let me introduce DaloyJS. Contract-first routing, Standard Schema validation, OpenAPI 3.1 with Hey API typed client codegen, streaming and OpenTelemetry tracing, edge-friendly sessions, a security-focused runtime by default, and a supply-chain-hardened release pipeline for the framework itself. One line in the App constructor, docs: true, auto-mounts a Scalar API reference at /docs and the live OpenAPI 3.1 spec at /openapi.json, the same DX as FastAPI. DaloyJS combines runtime portability, contract-first OpenAPI, generated typed clients, zero-dependency runtime guardrails, and supply-chain-aware project defaults into a single framework.

Devlin Duldulao

Outro to the Event

See you at the next Frontend Nation event!

Alex Garrett-Smith