v2.8.2

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

v2.8.1

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

v2.8.0

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

v2.7.2

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

v2.7.1

This fixes a regression in v2.7.0.

What's Changed

• fix(vanilla): store should flush pending write triggered asynchronously and indirectly by @iwoplaza in #2451
• fix(utils): atomWithStorage to always run onMount by @dai-shi in #2455

New Contributors

• @rothsandro made their first contribution in #2426
• @NehalDamania made their first contribution in #2441
• @tien made their first contribution in #2446
• @ashuvssut made their first contribution in #2445

Full Changelog: v2.7.0...v2.7.1

v2.7.0

We've improved the use of WeakMap for better memory management. Please report to us if any regressions are found.

What's Changed

• feat: atomWithRefresh by @dai-shi in #2393
• refactor: make pendingMap a WeakMap for better memory management by @dai-shi in #2396
• fix(utils): make 'unwrap' and 'loadable' able to access async atom's resolved value immediately by @iwoplaza in #2417
• fix(types): withStorageValidator by @dai-shi in #2418
• build: change rollup target to ES2018 by @amirhhashemi in #2419

Full Changelog: v2.6.5...v2.7.0

v2.6.5

Some type improvements!

What's Changed

• fix(types): useAtom with one type argument for primitive atoms by @dai-shi in #2386
• fix(types): fix withStorageValidator type by @dai-shi in #2410

New Contributors

• @henrikvilhelmberglund made their first contribution in #2391

Full Changelog: v2.6.4...v2.6.5

v2.6.4

Performance improvement! Check it out!

What's Changed

• refactor: refactoring store and options type by @ssi02014 in #2360
• refactor: modified Args type by @ssi02014 in #2367
• Improve performance of recomputeDependents by @samkline in #2363
• fix(vanilla): fix unexpected cache in jotai-scope by @yf-yang in #2371

New Contributors

• @ssi02014 made their first contribution in #2360
• @samkline made their first contribution in #2363
• @yf-yang made their first contribution in #2371

Full Changelog: v2.6.3...v2.6.4

v2.6.3

Some improvements in core and utils 👏

What's Changed

• fix: atoms should not remount on recalculations (with async dependencies) by @dmaskasky in #2347
• fix(utils): atomWithReducer for jotai-scope by @dai-shi in #2351
• fix(utils/atomWithStorage): defaultStorage with disabled local storage crashes on mount by @benediktschlager in #2354
• feat(vanilla): customizable atom.unstable_is by @dai-shi in #2356

New Contributors

• @SpringHgui made their first contribution in #2320
• @sakurawen made their first contribution in #2358
• @JoltCode made their first contribution in #2357
• @benediktschlager made their first contribution in #2354

Full Changelog: v2.6.2...v2.6.3

v2.6.2

Some improvements for atomWithStorage. Feedback is welcome.

What's Changed

• fix(vanilla): should mount once with atom creator atom by @nogaten in #2319
• feat(utils): createJSONStrage options by @dai-shi in #2324
• feat(utils): add withStorageValidator by @dai-shi in #2336

New Contributors

• @L-Qun made their first contribution in #2318
• @ahme-dev made their first contribution in #2332
• @nogaten made their first contribution in #2319

Full Changelog: v2.6.1...v2.6.2