Summary: This sync includes the following changes: - **[eaaf4cbce](https://github.com/facebook/react/commit/eaaf4cbce )**: 17.0.1 //<Dan Abramov>// - **[6f62abb58](https://github.com/facebook/react/commit/6f62abb58 )**: Remove usage of Array#fill ([#20071](https://github.com/facebook/react/pull/20071)) //<Dan Abramov>// - **[40cfe1f48](https://github.com/facebook/react/commit/40cfe1f48 )**: Update CHANGELOG.md //<Dan Abramov>// - **[f021a983a](https://github.com/facebook/react/commit/f021a983a )**: Bump versions for 17 ([#20062](https://github.com/facebook/react/pull/20062)) //<Dan Abramov>// - **[d1bb4d851](https://github.com/facebook/react/commit/d1bb4d851 )**: Profiler: Include ref callbacks in onCommit duration ([#20060](https://github.com/facebook/react/pull/20060)) //<Brian Vaughn>// - **[c59c3dfe5](https://github.com/facebook/react/commit/c59c3dfe5 )**: useRef: Warn about reading or writing mutable values during render ([#18545](https://github.com/facebook/react/pull/18545)) //<Brian Vaughn>// - **[7b6cac952](https://github.com/facebook/react/commit/7b6cac952 )**: Improved Profiler commit hooks test ([#20053](https://github.com/facebook/react/pull/20053)) //<Brian Vaughn>// - **[dfb6a4033](https://github.com/facebook/react/commit/dfb6a4033 )**: [Fast Refresh] Fix crashes caused by rogue Proxies ([#20030](https://github.com/facebook/react/pull/20030)) ([#20039](https://github.com/facebook/react/pull/20039)) //<Kai Riemann>// - **[37cb732c5](https://github.com/facebook/react/commit/37cb732c5 )**: Use bitwise OR to define flag masks ([#20044](https://github.com/facebook/react/pull/20044)) //<Andrew Clark>// - **[eb3181e77](https://github.com/facebook/react/commit/eb3181e77 )**: Add Visibility flag for hiding/unhiding trees ([#20043](https://github.com/facebook/react/pull/20043)) //<Andrew Clark>// - **[0dd809bdf](https://github.com/facebook/react/commit/0dd809bdf )**: Remove last schedulePassiveEffectCallback call ([#20042](https://github.com/facebook/react/pull/20042)) //<Andrew Clark>// - **[8df7b7911](https://github.com/facebook/react/commit/8df7b7911 )**: Remove Passive flag from "before mutation" phase ([#20038](https://github.com/facebook/react/pull/20038)) //<Andrew Clark>// - **[c57fe4a2c](https://github.com/facebook/react/commit/c57fe4a2c )**: ReactIs.isValidElementType Unit Test extended with PureComponent case ([#20033](https://github.com/facebook/react/pull/20033)) //<adasq>// - **[02da938fd](https://github.com/facebook/react/commit/02da938fd )**: Don't double-invoke effects in legacy roots ([#20028](https://github.com/facebook/react/pull/20028)) //<Brian Vaughn>// - **[d95c4938d](https://github.com/facebook/react/commit/d95c4938d )**: [EventSystem] Revise onBeforeBlur propagation mechanics ([#20020](https://github.com/facebook/react/pull/20020)) //<Dominic Gannaway>// - **[f46a80ae1](https://github.com/facebook/react/commit/f46a80ae1 )**: Update outdated links and fix two broken links ([#19985](https://github.com/facebook/react/pull/19985)) //<Saikat Guha>// - **[0a4c7c565](https://github.com/facebook/react/commit/0a4c7c565 )**: [Flight] Don't warn for key, but error for ref ([#19986](https://github.com/facebook/react/pull/19986)) //<Sebastian Markbåge>// - **[993ca533b](https://github.com/facebook/react/commit/993ca533b )**: Enable eager listeners statically ([#19983](https://github.com/facebook/react/pull/19983)) //<Dan Abramov>// - **[40c52de96](https://github.com/facebook/react/commit/40c52de96 )**: [Flight] Add Runtime Errors for Non-serializable Values ([#19980](https://github.com/facebook/react/pull/19980)) //<Sebastian Markbåge>// - **[1992d9730](https://github.com/facebook/react/commit/1992d9730 )**: Revert "Temporarily disable Profiler commit hooks flag ([#19900](https://github.com/facebook/react/pull/19900))" ([#19960](https://github.com/facebook/react/pull/19960)) //<Brian Vaughn>// - **[44d39c4d7](https://github.com/facebook/react/commit/44d39c4d7 )**: Removed skip-error-boundaries modifications from old fork ([#19961](https://github.com/facebook/react/pull/19961)) //<Brian Vaughn>// - **[cc77be957](https://github.com/facebook/react/commit/cc77be957 )**: Remove unnecessary error overriding in ([#19949](https://github.com/facebook/react/pull/19949)) //<Paul Doyle>// - **[97625272a](https://github.com/facebook/react/commit/97625272a )**: Debug tracing tests for CPU bound suspense ([#19943](https://github.com/facebook/react/pull/19943)) //<Brian Vaughn>// - **[43363e279](https://github.com/facebook/react/commit/43363e279 )**: Fix codestyle for typeof comparison ([#19928](https://github.com/facebook/react/pull/19928)) //<Eugene Maslovich>// - **[5427b4657](https://github.com/facebook/react/commit/5427b4657 )**: Temporarily disable Profiler commit hooks flag ([#19900](https://github.com/facebook/react/pull/19900)) //<Brian Vaughn>// - **[1faf9e3dd](https://github.com/facebook/react/commit/1faf9e3dd )**: Suspense for CPU-bound trees ([#19936](https://github.com/facebook/react/pull/19936)) //<Andrew Clark>// - **[7f08e908b](https://github.com/facebook/react/commit/7f08e908b )**: Fix missing context to componentDidMount() when double-invoking lifecycles ([#19935](https://github.com/facebook/react/pull/19935)) //<Brian Vaughn>// - **[9198a5cec](https://github.com/facebook/react/commit/9198a5cec )**: Refactor layout effect methods ([#19895](https://github.com/facebook/react/pull/19895)) //<Brian Vaughn>// - **[ba82eea38](https://github.com/facebook/react/commit/ba82eea38 )**: Remove disableSchedulerTimeoutInWorkLoop flag ([#19902](https://github.com/facebook/react/pull/19902)) //<Andrew Clark>// - **[c63741fb3](https://github.com/facebook/react/commit/c63741fb3 )**: offscreen double invoke effects ([#19523](https://github.com/facebook/react/pull/19523)) //<Luna Ruan>// - **[c6917346f](https://github.com/facebook/react/commit/c6917346f )**: Fixed broken Profiler test ([#19894](https://github.com/facebook/react/pull/19894)) //<Brian Vaughn>// - **[87c023b1c](https://github.com/facebook/react/commit/87c023b1c )**: Profiler onRender only called when we do work ([#19885](https://github.com/facebook/react/pull/19885)) //<Brian Vaughn>// - **[81aaee56a](https://github.com/facebook/react/commit/81aaee56a )**: Don't call onCommit et al if there are no effects ([#19863](https://github.com/facebook/react/pull/19863)) //<Andrew Clark>// - **[7355bf575](https://github.com/facebook/react/commit/7355bf575 )**: Consolidate commit phase hook functions ([#19864](https://github.com/facebook/react/pull/19864)) //<Andrew Clark>// - **[bc6b7b6b1](https://github.com/facebook/react/commit/bc6b7b6b1 )**: Don't trigger lazy in DEV during element creation ([#19871](https://github.com/facebook/react/pull/19871)) //<Dan Abramov>// - **[a774502e0](https://github.com/facebook/react/commit/a774502e0 )**: Use single quotes in getComponentName return ([#19873](https://github.com/facebook/react/pull/19873)) //<Gustavo Saiani>// - **[8b2d3783e](https://github.com/facebook/react/commit/8b2d3783e )**: Use Passive flag to schedule onPostCommit ([#19862](https://github.com/facebook/react/pull/19862)) //<Andrew Clark>// - **[50d9451f3](https://github.com/facebook/react/commit/50d9451f3 )**: Improve DevTools editing interface ([#19774](https://github.com/facebook/react/pull/19774)) //<Brian Vaughn>// - **[6fddca27e](https://github.com/facebook/react/commit/6fddca27e )**: Remove passive intervention flag ([#19849](https://github.com/facebook/react/pull/19849)) //<Dan Abramov>// - **[36df9185c](https://github.com/facebook/react/commit/36df9185c )**: chore(docs): Removed outdated comment about fb.me link ([#19830](https://github.com/facebook/react/pull/19830)) //<Adnaan Bheda>// - **[16fb2b6f9](https://github.com/facebook/react/commit/16fb2b6f9 )**: Moved resetChildLanes into complete work ([#19836](https://github.com/facebook/react/pull/19836)) //<Brian Vaughn>// - **[cc581065d](https://github.com/facebook/react/commit/cc581065d )**: eslint-plugin-react-hooks@4.1.2 //<Dan Abramov>// - **[0044805c8](https://github.com/facebook/react/commit/0044805c8 )**: Update CHANGELOG.md //<Dan Abramov>// - **[0f70d4dd6](https://github.com/facebook/react/commit/0f70d4dd6 )**: Consider components in jsx as missing dependencies in typescript-eslint/parser@4.x ([#19815](https://github.com/facebook/react/pull/19815)) //<Sebastian Silbermann>// - **[84558c61b](https://github.com/facebook/react/commit/84558c61b )**: Don't visit passive effects during layout phase ([#19809](https://github.com/facebook/react/pull/19809)) //<Andrew Clark>// - **[ad8a0a8cd](https://github.com/facebook/react/commit/ad8a0a8cd )**: eslint-plugin-react-hooks@4.1.1 //<Dan Abramov>// - **[77544a0d6](https://github.com/facebook/react/commit/77544a0d6 )**: Update CHANGELOG.md //<Dan Abramov>// - **[ed4fdfc73](https://github.com/facebook/react/commit/ed4fdfc73 )**: test(eslint-plugin-react-hooks): Run with TS parsers >= 2.x ([#19792](https://github.com/facebook/react/pull/19792)) //<Sebastian Silbermann>// - **[cd75f93c0](https://github.com/facebook/react/commit/cd75f93c0 )**: eslint-plugin-react-hooks: fix compatibility with typescript-eslint/parser@4.0.0+ ([#19751](https://github.com/facebook/react/pull/19751)) //<Matthias Schiffer>// - **[781212aab](https://github.com/facebook/react/commit/781212aab )**: Remove double space in test name ([#19762](https://github.com/facebook/react/pull/19762)) //<Gustavo Saiani>// - **[e7b255341](https://github.com/facebook/react/commit/e7b255341 )**: Internal `act`: Flush timers at end of scope ([#19788](https://github.com/facebook/react/pull/19788)) //<Andrew Clark>// - **[d17086c7c](https://github.com/facebook/react/commit/d17086c7c )**: Decouple public, internal act implementation ([#19745](https://github.com/facebook/react/pull/19745)) //<Andrew Clark>// - **[d38ec17b1](https://github.com/facebook/react/commit/d38ec17b1 )**: [Flight] Set dispatcher for duration of performWork() ([#19776](https://github.com/facebook/react/pull/19776)) //<Joseph Savona>// - **[4f3f7eeb7](https://github.com/facebook/react/commit/4f3f7eeb7 )**: Bugfix: Effect clean up when deleting suspended tree ([#19752](https://github.com/facebook/react/pull/19752)) //<Andrew Clark>// - **[7baf9d412](https://github.com/facebook/react/commit/7baf9d412 )**: Combine Flags and SubtreeFlags types ([#19775](https://github.com/facebook/react/pull/19775)) //<Andrew Clark>// - **[166544360](https://github.com/facebook/react/commit/166544360 )**: Rename effect fields ([#19755](https://github.com/facebook/react/pull/19755)) //<Andrew Clark>// - **[708fa77a7](https://github.com/facebook/react/commit/708fa77a7 )**: Decrease expiration time of input updates ([#19772](https://github.com/facebook/react/pull/19772)) //<Andrew Clark>// - **[36df483af](https://github.com/facebook/react/commit/36df483af )**: Add feature flag to disable scheduler timeout in work loop ([#19771](https://github.com/facebook/react/pull/19771)) //<Ricky>// - **[bcc0aa463](https://github.com/facebook/react/commit/bcc0aa463 )**: Revert "Revert "Remove onScroll bubbling flag ([#19535](https://github.com/facebook/react/pull/19535))" ([#19655](https://github.com/facebook/react/pull/19655))" ([#19761](https://github.com/facebook/react/pull/19761)) //<Dan Abramov>// - **[99cae887f](https://github.com/facebook/react/commit/99cae887f )**: Add failing test for passive effect cleanup functions and memoized components ([#19750](https://github.com/facebook/react/pull/19750)) //<Brian Vaughn>// - **[2cfd73c4d](https://github.com/facebook/react/commit/2cfd73c4d )**: Fix typo in comment (Noticable→Noticeable) ([#19737](https://github.com/facebook/react/pull/19737)) //<Ikko Ashimine>// - **[53e622ca7](https://github.com/facebook/react/commit/53e622ca7 )**: Fix instances of function declaration after return ([#19733](https://github.com/facebook/react/pull/19733)) //<Bhumij Gupta>// - **[b7d18c4da](https://github.com/facebook/react/commit/b7d18c4da )**: Support Babel's envName option in React Refresh plugin ([#19009](https://github.com/facebook/react/pull/19009)) //<Kevin Weber>// - **[1f38dcff6](https://github.com/facebook/react/commit/1f38dcff6 )**: Remove withSuspenseConfig ([#19724](https://github.com/facebook/react/pull/19724)) //<Andrew Clark>// - **[1396e4a8f](https://github.com/facebook/react/commit/1396e4a8f )**: Fixes eslint warning when node type is ChainExpression ([#19680](https://github.com/facebook/react/pull/19680)) //<Pascal Fong Kye>// - **[a8500be89](https://github.com/facebook/react/commit/a8500be89 )**: Add `startTransition` as a known stable method ([#19720](https://github.com/facebook/react/pull/19720)) //<Andrew Clark>// - **[380dc95de](https://github.com/facebook/react/commit/380dc95de )**: Revert "Append text string to <Text> error message ([#19581](https://github.com/facebook/react/pull/19581))" ([#19723](https://github.com/facebook/react/pull/19723)) //<Timothy Yung>// - **[ddd1faa19](https://github.com/facebook/react/commit/ddd1faa19 )**: Remove config argument from useTransition ([#19719](https://github.com/facebook/react/pull/19719)) //<Andrew Clark>// - **[92fcd46cc](https://github.com/facebook/react/commit/92fcd46cc )**: Replace SuspenseConfig object with an integer ([#19706](https://github.com/facebook/react/pull/19706)) //<Andrew Clark>// - **[b754caaaf](https://github.com/facebook/react/commit/b754caaaf )**: Enable eager listeners in open source ([#19716](https://github.com/facebook/react/pull/19716)) //<Dan Abramov>// - **[c1ac05215](https://github.com/facebook/react/commit/c1ac05215 )**: [Flight] Support more element types and Hooks for Server and Hybrid Components ([#19711](https://github.com/facebook/react/pull/19711)) //<Dan Abramov>// - **[1eaafc9ad](https://github.com/facebook/react/commit/1eaafc9ad )**: Clean up timeoutMs-related implementation details ([#19704](https://github.com/facebook/react/pull/19704)) //<Andrew Clark>// - **[8da0da093](https://github.com/facebook/react/commit/8da0da093 )**: Disable timeoutMs argument ([#19703](https://github.com/facebook/react/pull/19703)) //<Andrew Clark>// - **[60ba723bf](https://github.com/facebook/react/commit/60ba723bf )**: Add SuspenseList to devTools ([#19684](https://github.com/facebook/react/pull/19684)) //<Ben Pernick>// - **[5564f2c95](https://github.com/facebook/react/commit/5564f2c95 )**: Add React.startTransition ([#19696](https://github.com/facebook/react/pull/19696)) //<Ricky>// - **[c4e0768d7](https://github.com/facebook/react/commit/c4e0768d7 )**: Remove unused argument from `finishConcurrentRender` ([#19689](https://github.com/facebook/react/pull/19689)) //<inottn>// - **[848bb2426](https://github.com/facebook/react/commit/848bb2426 )**: Attach Listeners Eagerly to Roots and Portal Containers ([#19659](https://github.com/facebook/react/pull/19659)) //<Dan Abramov>// - **[d2e914ab4](https://github.com/facebook/react/commit/d2e914ab4 )**: Remove remaining references to effect list ([#19673](https://github.com/facebook/react/pull/19673)) //<Andrew Clark>// - **[d6e433899](https://github.com/facebook/react/commit/d6e433899 )**: Use Global Render Timeout for CPU Suspense ([#19643](https://github.com/facebook/react/pull/19643)) //<Sebastian Markbåge>// - **[64ddef44c](https://github.com/facebook/react/commit/64ddef44c )**: Revert "Remove onScroll bubbling flag ([#19535](https://github.com/facebook/react/pull/19535))" ([#19655](https://github.com/facebook/react/pull/19655)) //<Dan Abramov>// - **[dd651df05](https://github.com/facebook/react/commit/dd651df05 )**: Keep onTouchStart, onTouchMove, and onWheel passive ([#19654](https://github.com/facebook/react/pull/19654)) //<Dan Abramov>// - **[b8fa09e9e](https://github.com/facebook/react/commit/b8fa09e9e )**: provide profiling bundle for react-reconciler ([#19559](https://github.com/facebook/react/pull/19559)) //<Julien Gilli>// - **[23595ff59](https://github.com/facebook/react/commit/23595ff59 )**: Add missing param to safelyCallDestroy() ([#19638](https://github.com/facebook/react/pull/19638)) //<Brian Vaughn>// - **[ee409ea3b](https://github.com/facebook/react/commit/ee409ea3b )**: change destroy to safelyCallDestroy ([#19605](https://github.com/facebook/react/pull/19605)) //<Luna Ruan>// - **[bcca5a6ca](https://github.com/facebook/react/commit/bcca5a6ca )**: Always skip unmounted/unmounting error boundaries ([#19627](https://github.com/facebook/react/pull/19627)) //<Brian Vaughn>// - **[1a41a196b](https://github.com/facebook/react/commit/1a41a196b )**: Append text string to <Text> error message ([#19581](https://github.com/facebook/react/pull/19581)) //<Timothy Yung>// - **[e4afb2fdd](https://github.com/facebook/react/commit/e4afb2fdd )**: eslint-plugin-react-hooks@4.1.0 //<Dan Abramov>// - **[ced05c46c](https://github.com/facebook/react/commit/ced05c46c )**: Update CHANGELOG.md //<Dan Abramov>// - **[702fad4b1](https://github.com/facebook/react/commit/702fad4b1 )**: refactor fb.me redirect link to reactjs.org/link ([#19598](https://github.com/facebook/react/pull/19598)) //<CY Lim>// - **[49cd77d24](https://github.com/facebook/react/commit/49cd77d24 )**: fix: leak strict mode with UMD builds ([#19614](https://github.com/facebook/react/pull/19614)) //<Toru Kobayashi>// - **[ffb749c95](https://github.com/facebook/react/commit/ffb749c95 )**: Improve error boundary handling for unmounted subtrees ([#19542](https://github.com/facebook/react/pull/19542)) //<Brian Vaughn>// - **[9b35dd2fc](https://github.com/facebook/react/commit/9b35dd2fc )**: Permanently removed component stacks from scheduling profiler data ([#19615](https://github.com/facebook/react/pull/19615)) //<Brian Vaughn>// - **[3f8115cdd](https://github.com/facebook/react/commit/3f8115cdd )**: Remove `didTimeout` check from work loop //<Andrew Clark>// - **[9abc2785c](https://github.com/facebook/react/commit/9abc2785c )**: Remove wasteful checks from `shouldYield` //<Andrew Clark>// - **[1d5e10f70](https://github.com/facebook/react/commit/1d5e10f70 )**: [eslint-plugin-react-hooks] Report constant constructions ([#19590](https://github.com/facebook/react/pull/19590)) //<Jordan Eldredge>// - **[dab0854c5](https://github.com/facebook/react/commit/dab0854c5 )**: Move commit passive unmount/mount to CommitWork ([#19599](https://github.com/facebook/react/pull/19599)) //<Sebastian Markbåge>// - **[ccb6c3945](https://github.com/facebook/react/commit/ccb6c3945 )**: Remove unused argument ([#19600](https://github.com/facebook/react/pull/19600)) //<inottn>// - **[629125555](https://github.com/facebook/react/commit/629125555 )**: [Scheduler] Re-throw unhandled errors ([#19595](https://github.com/facebook/react/pull/19595)) //<Andrew Clark>// - **[b8ed6a1aa](https://github.com/facebook/react/commit/b8ed6a1aa )**: [Scheduler] Call postTask directly ([#19551](https://github.com/facebook/react/pull/19551)) //<Andrew Clark>// - **[ce37bfad5](https://github.com/facebook/react/commit/ce37bfad5 )**: Remove resolutions from test renderer package.json ([#19577](https://github.com/facebook/react/pull/19577)) //<Dan Abramov>// - **[2704bb537](https://github.com/facebook/react/commit/2704bb537 )**: Add ReactVersion to SchedulingProfiler render scheduled marks ([#19553](https://github.com/facebook/react/pull/19553)) //<Kartik Choudhary>// - **[0c52e24cb](https://github.com/facebook/react/commit/0c52e24cb )**: Support inner component _debugOwner in memo ([#19556](https://github.com/facebook/react/pull/19556)) //<Brian Vaughn>// - **[0cd9a6de5](https://github.com/facebook/react/commit/0cd9a6de5 )**: Parallelize Jest in CI ([#19552](https://github.com/facebook/react/pull/19552)) //<Andrew Clark>// - **[a63893ff3](https://github.com/facebook/react/commit/a63893ff3 )**: Warn about undefined return value for memo and forwardRef ([#19550](https://github.com/facebook/react/pull/19550)) //<Brian Vaughn>// - **[32ff42868](https://github.com/facebook/react/commit/32ff42868 )**: Add feature flag for setting update lane priority ([#19401](https://github.com/facebook/react/pull/19401)) //<Ricky>// - **[5bdd4c8c6](https://github.com/facebook/react/commit/5bdd4c8c6 )**: Remove unused argument from call to jest method ([#19546](https://github.com/facebook/react/pull/19546)) //<Gustavo Saiani>// - **[a5fed98a9](https://github.com/facebook/react/commit/a5fed98a9 )**: Register more node types that are used later as JSXIdentifiers ([#19514](https://github.com/facebook/react/pull/19514)) //<Mateusz Burzyński>// - **[f77c7b9d7](https://github.com/facebook/react/commit/f77c7b9d7 )**: Re-add discrete flushing timeStamp heuristic (behind flag) ([#19540](https://github.com/facebook/react/pull/19540)) //<Dominic Gannaway>// Changelog: [general] [feature] Upgrade to React 17 Reviewed By: cpojer Differential Revision: D24491201 fbshipit-source-id: c947da9dcccbd614e9dc58f3339b63e24829aca7
