feat(utils): atomFamily supports getParams and unstable_listen api

[dmaskasky]

Related Bug Reports or Discussions

Past ideas

idea1: #2678
idea2: #2679
idea3: #2681
idea4: #2683

Fixes #2056
Fixes jotaijs/jotai-scope#50

Summary

jotai-scope is trying to support scoping atomFamily.

const fooFamily = atomFamily((id) => atom(id))
<ScopedProvider atomFamilies={[fooFamily]}>{children}</ScopeProvider>

This PR demonstrates one approach in which the atomFamily supports getParams and unstable_listen.

The following pseudo code represents logic that would live in jotai-scope.

function handleChange({ type, atom }) {
  if (type === 'CREATE') {
    atomSet.add(atom)
  } else {
    atomSet.delete(atom)
  }
}

for (const atomFamily of atomFamilies) {
  atomFamily.unstable_listen(handleChange)
  for (const param of atomFamily.getParams()) {
    atomSet.add(atomFamily(param))
  }
}
  ...
const isExplicitlyScoped = atomSet.has(atom)

Check List

• pnpm run prettier for formatting code and docs

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Name	Status	Preview	Comments	Updated (UTC)
jotai	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jul 31, 2024 5:12pm

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Preview in LiveCodes

Latest commit: 48ed9fa
Last updated: Jul 31, 2024 5:12pm (UTC)

Playground	Link
React demo	https://livecodes.io?x=id/AVHMB4P69

---

See documentations for usage instructions.

[dai-shi]

It looks good to me. Added a few comments.

[dmaskasky]

It looks good to me. Added a few comments.

Ready to merge.