Front end developers sit atop a massive amount of technology, often treating whole pieces of our application as opaque functionality. Grab a hard hat and follow me down into the internals of Preact, a tiny 3kb alternative to React. Along the way we’ll shed light on fundamentals like JSX & Virtual DOM, demystify DOM diffing, and see how keys work up close.
On our way back to the surface, we’ll stop at the Museum of Lost Hours to see some performance and size optimisations. Hope you’re not afraid of the dark!