05-reaction

05 — Reaction

Demonstrates reaction — a more fine-grained alternative to autorun.

Concepts

• reaction(dataFn, effectFn) — separates "what to track" (data function) from "what to do" (effect function)
• Selective tracking — only fires when the data function's return value changes
• Disposal — reaction returns a disposer function to stop tracking

Run locally

npm install
npm run dev

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