Building React From Scratch

Paul O'Shannessy implements a stripped-down React on stage to make the diffing algorithm and the component model legible.

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David Khourshid argues that most UI bugs are state machines you wrote without noticing — and shows what changes when you write them on purpose.

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.

Rich Harris pushes back on the SPA-vs-MPA dichotomy and sketches transitional apps — server-rendered, JS-enhanced, and progressively interactive.

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

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

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

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