React Today and Tomorrow
The React Conf 2018 keynote where Sophie Alpert and Dan Abramov introduce Hooks and explain why class components had become a dead end.

Building a Custom React Renderer
Sophie Alpert builds a tiny React renderer live on stage, demystifying reconciliation by writing it from scratch.

Beyond React 16
Dan Abramov demos the React team's first sketches of async rendering and Suspense — the prototypes that would later become Concurrent Mode.

The Wet Codebase
Abramov on what DRY actually costs once you've lived with a too-clever abstraction — and why writing the same code twice is sometimes the right answer.

Concurrent Rendering in React
Andrew Clark and Brian Vaughn unveil React.lazy, Suspense, and Concurrent Mode — and the scheduler that makes interruptible rendering possible.

Rich Harris on frameworks, the web, and the edge
Harris revisits the SPA-vs-MPA argument through the lens of edge runtimes — and pushes back on the idea that SSR-everywhere is a victory for users.

Have Single-Page Apps Ruined the Web?
Rich Harris pushes back on the SPA-vs-MPA dichotomy and sketches transitional apps — server-rendered, JS-enhanced, and progressively interactive.