This fixes a regression in an edge case that is introduced in v2.6.4.

What's Changed

• fix(store): derived atom not updating when its value changes if another atom is read it conditionally by @yuneco in #2700
• experimental(core): expose unstable_derive by @dai-shi in #2652

New Contributors

• @yuneco made their first contribution in #2700

Full Changelog: v2.9.2...v2.9.3

A small improvement in atomFamily for edge use cases.

What's Changed

• feat(utils): atomFamily supports getParams and unstable_listen api by @dmaskasky in #2685

New Contributors

• @junkboy0315 made their first contribution in #2694

Full Changelog: v2.9.1...v2.9.2

This patch version includes various fixes. Huge thanks to contributors!

What's Changed

• refactor(core): follow naming convention by @dai-shi in #2662
• refactor(core): store with Object.assign by @dai-shi in #2663
• fix(core): atom toString includes debugLabel in dev mode by @dmaskasky in #2659
• fix(core): Unmount an atom that is no longer dependent within a derived atom by @nogaten in #2660
• fix(types): add undefined initial value to Atom definition by @rtritto in #2668

New Contributors

• @rtritto made their first contribution in #2668

Full Changelog: v2.9.0...v2.9.1

This version introduces a new core implementation. All tests are passing but there can be some regressions due to missing tests. Please feel free to report such cases and let's improve test coverage.

The benefit with the new implementation:

• Fix memory leak issue with vanilla store usage.
• More readability of the core code.

What's Changed

• feat: use new store by default by @dai-shi in #2641

Full Changelog: v2.8.4...v2.9.0

This changes the behavior of async atom with abort signal on unmount to fix some use cases.

What's Changed

• fix: do not abort atoms on unmount by @Pinpickle in #2627

New Contributors

• @tcpdumppy made their first contribution in #2602
• @GregorGabric made their first contribution in #2605
• @ideabrian made their first contribution in #2614

Full Changelog: v2.8.3...v2.8.4

The improvement for atomWithStorage in v2.8.2 contained a bug, which is fixed in this version.

What's Changed

• fix(utils): subscribe method of createJSONStorage should only run in the client by @mhsattarian in #2585
• feat(store2): add dev4_get_mounted_atoms by @arjunvegda in #2594

New Contributors

• @leo-diehl made their first contribution in #2590

Full Changelog: v2.8.2...v2.8.3

This fixes another edge case and improves utils for more flexibility.

What's Changed

• fix(store2): "stuck" derived atoms where some derivations may never resolve by @backbone87 in #2448
• feat(utils): allow providing a subscribe method to createJSONStorage util by @mhsattarian in #2539
• fix(vanilla): fix store.ts for an edge case by @dai-shi in #2567

New Contributors

• @mhsattarian made their first contribution in #2539

Full Changelog: v2.8.1...v2.8.2

This fixes a regression in v2.6.4 and a regression in v2.7.0.

What's Changed

• feat: add back dev4_restore_atoms to store v2 by @arjunvegda in #2509
• fix(core): update atom value with conditional dependencies (regression with #2363) by @probeiuscorp in #2534
• fix(store): properly update atom values with edge-case dependency by @dai-shi in #2555

New Contributors

• @lazybean made their first contribution in #2492
• @linjiajian999 made their first contribution in #2496
• @do7be made their first contribution in #2505
• @faizanu94 made their first contribution in #2507
• @ouweiya made their first contribution in #2514
• @trongthanh made their first contribution in #2524
• @probeiuscorp made their first contribution in #2534

Full Changelog: v2.8.0...v2.8.1

This version introduces a new feature atomWithLazy and deprecates useReducerAtom and freezeAtomCreator. It also introduces an experimental store implementation in jotai/experimental.

Migration Guide

selectAtom

selectAtom will no longer internally unwrap promises. To migrate to the new api, use the unwrap utility from jotai/utils package.

// suppose we have this
const baseAtom = atom(Promise.resolve({ id: 0, name: 'test' }))

// previously selectAtom would internally unwrap promises.
const idAtom = selectAtom(
  baseAtom,
  ({ name }) => name,
  (prev, curr) => prev.id === curr.id
)

// instead, you need to import `unwrap` from 'jotai/utils' and pass the unwrapped atom 
import { unwrap } from 'jotai/utils'
  ...
const idAtom = selectAtom(
  unwrap(baseAtom),
  ({ name }) => name,
  (prev, curr) => prev.id === curr.id
)

useReducerAtom

https://jotai.org/docs/recipes/use-reducer-atom

freezeAtomCreator

https://jotai.org/docs/guides/debugging#freezeatomcreator

What's Changed

• [BREAKING] selectAtom does not resolve promises internally by @dmaskasky in #2435
• New store implementation as store2.ts by @dai-shi in #2463
• feat(utils): atomWithLazy for lazily initialized primitive atoms. by @iwoplaza in #2465
• deprecate useReducerAtom by @dai-shi in #2467
• fix(babel): do not depend on path by @dai-shi in #2482
• fix(utils): improve freezeAtom and freezeAtomCreator by @backbone87 in #2476
• deprecate freezeAtomCreator by @dai-shi in #2490

New Contributors

• @frameflare made their first contribution in #2483

Full Changelog: v2.7.2...v2.8.0

Mostly refactors.

What's Changed

• refactor(vanilla): moved (un)mount guards into their respective functions. (suggestion) by @iwoplaza in #2457
• fix(vanilla): improve dual instance warning in DEV by @dai-shi in #2462
• refactor: no-any by @dai-shi in #2471
• fix: avoid slow types by @dai-shi in #2472

Full Changelog: v2.7.1...v2.7.2