18 Pull requests merged by 8 people

• [compiler][playground] (3/N) Config override panel

  #34371 merged Sep 5, 2025

• [DevTools] Allow inspecting root when navigating Suspense timeline

  #34380 merged Sep 4, 2025

• [DevTools] Don't suspend shell while retrieving original source for "open-in-editor"

  #34381 merged Sep 4, 2025

• [DevTools] Allow inspection before streaming has finished in Chrome

  #34360 merged Sep 4, 2025

• [DevTools] Rerender boundaries when they unsuspend when advancing the timeline

  #34359 merged Sep 4, 2025

• [compiler] Cleanup for @enablePreserveExistingMemoizationGuarantees

  #34346 merged Sep 4, 2025

• [compiler] enablePreserveExistingMemo memoizes primitive-returning functions

  #34343 merged Sep 4, 2025

• [compiler] Fix for scopes with unreachable fallthroughs

  #34335 merged Sep 4, 2025

• Fix: uDV skipped initial value if earlier transition suspended

  #34376 merged Sep 3, 2025

• [playground] Upgrade to latest next

  #34375 merged Sep 3, 2025

• [flags] enable opt-in for enableDefaultTransitionIndicator

  #34373 merged Sep 3, 2025

• Performance Tracks: log properties diff for renders in DEV if no console task available

  #34370 merged Sep 3, 2025

• [compiler][playground] (2/N) Config override panel

  #34344 merged Sep 2, 2025

• [DevTools] Remove markers from Suspense timeline

  #34357 merged Sep 2, 2025

• [DevTools] Only inspect elements on left mouseclick

  #34361 merged Sep 2, 2025

• [DevTools] Fix inspected element scroll in Suspense tab

  #34355 merged Sep 1, 2025

• [Flight] Only assign _store in dev mode when creating lazy types

  #34354 merged Sep 1, 2025

• [Flight] Fix wrong missing key warning when static child is blocked

  #34350 merged Sep 1, 2025

27 Pull requests opened by 10 people

• Add allowClientFallback option to use() hook

  #34362 opened Sep 1, 2025

• Add a missing `@types` package to `eslint-plugin-react-hooks`

  #34365 opened Sep 2, 2025

• Land enableHiddenSubtreeInsertionEffectCleanup

  #34372 opened Sep 3, 2025

• Release Activity in Canary

  #34374 opened Sep 3, 2025

• Fix uDV: Re-render while in "initial" state

  #34377 opened Sep 3, 2025

• [DevTools] Stop using native `title`

  #34379 opened Sep 4, 2025

• [compiler] new tests for props derived

  #34384 opened Sep 4, 2025

• [compiler][wip] Extend ValidateNoDerivedComputationsInEffects for props derived effects

  #34385 opened Sep 4, 2025

• [compiler] Basic solution for instruction based prop derivation validation

  #34386 opened Sep 4, 2025

• [compiler] Validation for values derived from props in useEffect ready

  #34387 opened Sep 4, 2025

• [compiler] Added check for if the same invalid setSate within an effect is used elsewhere

  #34388 opened Sep 4, 2025

• [compiler] Added validation for local state and refined error messages

  #34389 opened Sep 4, 2025

• [compiler] First functional disambiguated single line validation of no derived computations in effects

  #34390 opened Sep 4, 2025

• [compiler] Remove single line constraint and improve overall capturing logic

  #34391 opened Sep 4, 2025

• [compiler] Add catching useStates that shadow a reactive value

  #34392 opened Sep 4, 2025

• [playground] Sketch of adding type checking to config panel

  #34393 opened Sep 4, 2025

• [compiler] Implement exhaustive dependency checking for manual memoization

  #34394 opened Sep 4, 2025

• [DevTools] Avoid renders of stale Suspense store

  #34396 opened Sep 5, 2025

• [DevTools] Only show boundaries with unique suspenders by default in the timeline

  #34397 opened Sep 5, 2025

• Show internals toggle

  #34399 opened Sep 5, 2025

• [DevTools] Fix handling of host roots on mount

  #34400 opened Sep 5, 2025

• [compiler] Derive ErrorSeverity from ErrorCategory

  #34401 opened Sep 5, 2025

• [compiler] Deprecate CompilerErrorDetail

  #34402 opened Sep 5, 2025

• [compiler] Migrate CompilerError.invariant to new CompilerDiagnostic infra

  #34403 opened Sep 5, 2025

• [compiler] Fix error description inconsistency

  #34404 opened Sep 5, 2025

• [compiler] Add missing source locations to statements, expressions

  #34406 opened Sep 6, 2025

• [react-devtools-shared] Fix URL construction when base URL is invalid

  #34407 opened Sep 6, 2025

5 Issues closed by 2 people

• Feature proposal: Give `useEffect` cleanup an option to run on page unload

  #32369 closed Sep 5, 2025

• Bug:

  #34383 closed Sep 4, 2025

• [Compiler Bug]: Compiler introduces unnecessary breaks that skips its own memoization

  #34108 closed Sep 4, 2025

• Bug: [Error: Expected a suspended thenable. This is a bug in React. Please file an issue.] { digest: '1832240620' }

  #33359 closed Sep 1, 2025

• Bug: Can't import react-devtools-core in NodeJS environment

  #33103 closed Aug 31, 2025

10 Issues opened by 10 people

• Bug: Potential React 19.1.1 regression bug (ISO date strings in nested objects)

  #34398 opened Sep 5, 2025

• Bug: jsdom issues with React 19.1.1

  #34382 opened Sep 4, 2025

• [Compiler Bug]: TypeScript function overloads cause an exported function from a hook to be `undefined`

  #34378 opened Sep 4, 2025

• [Compiler]: Invocation of hook at specific position breaks memoization

  #34369 opened Sep 3, 2025

• Bug:

  #34367 opened Sep 3, 2025

• eslint-plugin-react-hooks needs dependency on zod ^3.25.0 or later

  #34366 opened Sep 3, 2025

• [Compiler Bug]: `TSInstantiationExpression` as default value in parameter list

  #34358 opened Sep 1, 2025

• Bug: Error: Expected a suspended thenable. digest: '2227452506' and '1572604020'

  #34356 opened Sep 1, 2025

• Bug:

  #34353 opened Aug 31, 2025

• [Enhancement] Add option to prevent fallback to client-side execution when using `use()`

  #34349 opened Aug 30, 2025

43 Unresolved conversations

Sometimes conversations happen on old items that aren’t yet closed. Here is a list of all the Issues and Pull Requests with unresolved conversations.

• [compiler] Improve ShallowMutable detection for frozen sources

  #34341 commented on Sep 3, 2025 • 8 new comments

• Bug: `Transition was aborted because of invalid state` when browser tab not active

  #34098 commented on Aug 31, 2025 • 0 new comments

• Bug:

  #33435 commented on Sep 5, 2025 • 0 new comments

• Bug: source maps are missing from react npm packages

  #31906 commented on Sep 5, 2025 • 0 new comments

• [React 19] Incorrect infered response type in server actions with React 19

  #31786 commented on Sep 5, 2025 • 0 new comments

• Bug: initial props will leak if a component renders nested elements, when an outer element never rerenders.

  #31744 commented on Sep 5, 2025 • 0 new comments

• Bug: useEffect Without Dependencies Not Executed Correctly After setState

  #31703 commented on Sep 5, 2025 • 0 new comments

• [Compiler]: React Compiler should error on document.getElementById call during render

  #31932 commented on Sep 5, 2025 • 0 new comments

• [Compiler Bug]: Destructure component props caused Compilation skipped because existing memoization could not be preserved

  #34313 commented on Sep 5, 2025 • 0 new comments

• [React 19] Regression when using `createPortal` with DOM element created by `dangerouslySetInnerHTML`

  #31600 commented on Sep 5, 2025 • 0 new comments

• [Compiler Optimization]: avoid memoizing `useState` lazy initializer functions

  #31453 commented on Sep 5, 2025 • 0 new comments

• Bug: eslint-plugin-react-hooks@5.0.0 only detects english component names

  #31446 commented on Sep 5, 2025 • 0 new comments

• Bug: Images with `loading="lazy"` remounted with react are all loaded

  #31529 commented on Sep 6, 2025 • 0 new comments

• Bug: In the unmount function returned by createRoot, an imprecise comparison statement causes the first unmount failed, affecting subsequent program operations.

  #33460 commented on Sep 6, 2025 • 0 new comments

• eslint-plugin-react-hooks: Fix international component name compatibility

  #31456 commented on Sep 4, 2025 • 0 new comments

• refactor: change react promise status type

  #31623 commented on Aug 31, 2025 • 0 new comments

• Fix missing import for `performance` from `perf_hooks` in runner.ts

  #31908 commented on Sep 2, 2025 • 0 new comments

• RFC: Server Context for React Server Components

  #33088 commented on Sep 5, 2025 • 0 new comments

• Fix 'Should not already be working' error in Firefox after breakpoint…

  #33420 commented on Sep 1, 2025 • 0 new comments

• chore: fix typo 'diasbled' to 'disabled' in ESLint config comment

  #33453 commented on Sep 4, 2025 • 0 new comments

• Fix the "Unsupported node type: PrivateIdentifier" in `react-hooks/exhaustive-deps` ESLint rule

  #33455 commented on Sep 4, 2025 • 0 new comments

• Reduce false positive of eslint rule exhaustive-deps improving dependency analysis

  #33462 commented on Sep 5, 2025 • 0 new comments

• Bug: React 19 cannot run apps in both dev & production mode simultaneously

  #32030 commented on Sep 1, 2025 • 0 new comments

• Bug: actQueue forever growing in react 19.0.0

  #34250 commented on Sep 1, 2025 • 0 new comments

• Bug: The UMD builds for react and react-dom are not building correctly

  #33794 commented on Sep 1, 2025 • 0 new comments

• [DevTools Bug] Cannot add node "1" because a node with that id is already in the Store.

  #34128 commented on Sep 1, 2025 • 0 new comments

• Feature Request: [react-hooks/exhaustive-deps] Add option to ignore specific values in hook dependency arrays

  #33419 commented on Sep 1, 2025 • 0 new comments

• [React 19] `renderToString`'s output missing some rendered elements

  #31754 commented on Sep 1, 2025 • 0 new comments

• Bug: formMethod specified on the submit button doesn't override the method from useFormStatus.

  #33361 commented on Sep 2, 2025 • 0 new comments

• Bug: React 18 vs 19 callback refs

  #34071 commented on Sep 2, 2025 • 0 new comments

• Bug: <Suspense> with a lazy() Component loads forever

  #33020 commented on Sep 2, 2025 • 0 new comments

• "Should not already be working" in Firefox after a breakpoint/alert

  #17355 commented on Sep 2, 2025 • 0 new comments

• Bug: Regression with defaultProps on class components

  #31692 commented on Sep 3, 2025 • 0 new comments

• Bug: [eslint-plugin-react-hooks] No `react-hooks/exhaustive-deps` warning when an unstable reference is passed to hook's callback parameter

  #33391 commented on Sep 3, 2025 • 0 new comments

• Bug: performance: `createPortal()` attaches listeners even in contained roots

  #33428 commented on Sep 3, 2025 • 0 new comments

• Bug: input type number ignores defaultValue after clicking Enter when used with useActionState

  #33667 commented on Sep 3, 2025 • 0 new comments

• [React 19] Controlled checkboxes are reset by form submission and form.reset()

  #31695 commented on Sep 4, 2025 • 0 new comments

• [Compiler Bug]: Coverage report shows missing branch coverage

  #32950 commented on Sep 4, 2025 • 0 new comments

• Bug: `Suspense` components rendered by `renderToReadableStream()` cause render abort when served with Bun

  #32159 commented on Sep 4, 2025 • 0 new comments

• Bug: state update from a rAF in useLayoutEffect not batched when using createRoot

  #32021 commented on Sep 4, 2025 • 0 new comments

• [DevTools Bug]: [DevTools Bug] Cannot reorder children for node "0" because no matching node was found in the Store.

  #32196 commented on Sep 5, 2025 • 0 new comments

• [React 19] Need Bring Back `_debugSource` or Provide an Equivalent for Better Developer Experience

  #32574 commented on Sep 5, 2025 • 0 new comments

• Bug: [React 18] `act` in tests can alter autobatching behavior compared to production in 18.3.1

  #33479 commented on Sep 5, 2025 • 0 new comments