Simon Willison’s Weblog

hooks-in-a-nutshell.js (via) Neat, heavily annotated implementation of React-style hooks in pure JavaScript, really useful for understanding how they work.

Posted 4th January 2021 at 6:36 pm

Recent articles

JustHTML is a fascinating example of vibe engineering in action - 14th December 2025
OpenAI are quietly adopting skills, now available in ChatGPT and Codex CLI - 12th December 2025
GPT-5.2 - 11th December 2025

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