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UsefulSoftwareCo

wrdn-effect-atom-reactivity-keys

UsefulSoftwareCo/executor/.agents/skills/wrdn-effect-atom-reactivity-keys/SKILL.md

Add reactivityKeys to effect-atom write mutation calls. Use when lint flags a useAtomSet mutation call that mutates data without invalidation keys.

Skill4.1k starsChanged 5 months ago
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What's in it

  1. Fix Shape
  2. Good

Tools it asks for

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---
name: wrdn-effect-atom-reactivity-keys
description: Add reactivityKeys to effect-atom write mutation calls. Use when lint flags a useAtomSet mutation call that mutates data without invalidation keys.
allowed-tools: Read Grep Glob Bash
---

Effect-atom write mutations must say which reads they invalidate.

## Fix Shape

- Find the `useAtomSet(...)` write mutation call.
- Add `reactivityKeys` to the mutation payload at the call site.
- Use the narrowest keys that cover the rows/lists affected by the write.
- Keep read-only probe/preview OAuth flows out of this pattern.
- If the mutation should update UI immediately, check whether `wrdn-effect-atom-optimistic` also applies.

## Good

```ts
await updateSource({
  params: { scopeId, sourceId },
  payload,
  reactivityKeys: [["sources", scopeId]],
});
```

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