[v3] migration guide

[dai-shi]

for #3337

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
jotai	Ready	Preview, Comment	Jul 20, 2026 10:40am

[pkg-pr-new]

More templates

• hacker_news
• hello
• mega-form
• starter
• text_length
• todos
• todos_with_atomFamily

npm i https://pkg.pr.new/jotai@3359

commit: d51f3e4

[github-actions]

Size Change: 0 B

Total Size: 18.1 kB

ℹ️ View Unchanged

Filename	Size
dist/index.js	60 B
dist/react.js	139 B
dist/react/continuablePromise.js	540 B
dist/react/Provider.js	426 B
dist/react/useAtom.js	190 B
dist/react/useAtomValue.js	420 B
dist/react/useAtomValueRaw.js	426 B
dist/react/useAtomValueRawSync.js	325 B
dist/react/useSetAtom.js	321 B
dist/react/utils.js	122 B
dist/react/utils/useAtomCallback.js	201 B
dist/react/utils/useHydrateAtoms.js	319 B
dist/react/utils/useReducerAtom.js	374 B
dist/react/utils/useResetAtom.js	194 B
dist/utils.js	66 B
dist/vanilla.js	115 B
dist/vanilla/atom.js	350 B
dist/vanilla/internals.js	6.18 kB
dist/vanilla/store.js	429 B
dist/vanilla/typeUtils.js	31 B
dist/vanilla/utils.js	245 B
dist/vanilla/utils/atomWithDefault.js	346 B
dist/vanilla/utils/atomWithLazy.js	185 B
dist/vanilla/utils/atomWithObservable.js	945 B
dist/vanilla/utils/atomWithReducer.js	154 B
dist/vanilla/utils/atomWithRefresh.js	322 B
dist/vanilla/utils/atomWithReset.js	226 B
dist/vanilla/utils/atomWithStorage.js	1.16 kB
dist/vanilla/utils/constants.js	100 B
dist/vanilla/utils/freezeAtom.js	517 B
dist/vanilla/utils/selectAtom.js	468 B
dist/vanilla/utils/splitAtom.js	1.35 kB
dist/vanilla/utils/unwrap.js	858 B

_{compressed-size-action}