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Clearer code in Button.js #14455

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Clearer code in Button.js #14455

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@ghost ghost commented Jun 11, 2017

Thanks for submitting a PR! Please read these instructions carefully:

  • Explain the motivation for making this change.
  • Provide a test plan demonstrating that the code is solid.
  • Match the code formatting of the rest of the codebase.
  • Target the master branch, NOT a "stable" branch.

Motivation (required)

What existing problem does the pull request solve?

  • Combined repeating if checks for clearer logic.
  • defaultBlue is inlined because it is only used once for each OS.

Test Plan (required)

  • Updated the Button.js file in an existing project and all buttons behave exactly the same. Here is a simple demo:

  • There is no change in the underlying logic of the code.

* Combined repeating `if` statements
* `defaultBlue` is inlined because it is only used once for each OS.
@facebook-github-bot facebook-github-bot added CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. GH Review: review-needed labels Jun 11, 2017
@hramos hramos requested a review from ericvicenti June 14, 2017 21:44
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This change doesn't hurt, but it doesn't really fix anything either.

The reason defaultBlue was an isolated variable is because we may one day decide to export it so that other components can match the color of the button. Are you sure we don't want to move in that direction instead?

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ghost commented Jun 25, 2017

@ericvicenti Thanks for the review. My personal opinion is that if we are to export the color of the button we should do it using the existing color prop instead of creating a new variable. And we can work on that later.

@facebook-github-bot facebook-github-bot added GH Review: accepted Import Started This pull request has been imported. This does not imply the PR has been approved. and removed GH Review: review-needed labels Jun 27, 2017
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@hramos has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.

@ghost ghost deleted the patch-1 branch June 28, 2017 08:19
hramos added a commit to hramos/react-native that referenced this pull request Feb 6, 2019
Summary:
@public
This sync includes the following changes:
- **[45fc46bfa](facebook/react@45fc46bfa )**: 16.8.1 packages //<Brian Vaughn>//
- **[f2e2637c8](facebook/react@f2e2637c8 )**: Backwards compat fix for ReactCurrentDispatcher on older react versions (facebook#14770) //<Brian Vaughn>//
- **[1107b9673](facebook/react@1107b9673 )**: [TestUtils.act] warn when using TestUtils.act in node (facebook#14768) //<Sunil Pai>//
- **[0975ea327](facebook/react@0975ea327 )**: eslint-plugin-react-hooks v1.0.0 //<Brian Vaughn>//
- **[bc9818f24](facebook/react@bc9818f24 )**: Scheduler.unstable_next (facebook#14756) //<Andrew Clark>//
- **[ce6ecd3fb](facebook/react@ce6ecd3fb )**: Add 16.8.0 changelog and update some READMEs (facebook#14692) //<Dan Abramov>//
- **[008a2ab9c](facebook/react@008a2ab9c )**: 16.8.0 //<Brian Vaughn>//
- **[d1326f466](facebook/react@d1326f466 )**: [TestUtils.act] fix return result checking  (facebook#14758) //<Sunil Pai>//
- **[267ed9814](facebook/react@267ed9814 )**: expose `TestUtils.act()` for batching actions in tests (facebook#14744) //<Sunil Pai>//
- **[fb3f7bfde](facebook/react@fb3f7bfde )**: Avoid importing Scheduler directly (facebook#14757) //<Andrew Clark>//
- **[e602b5291](facebook/react@e602b5291 )**: Use SameValue instead of === to check for dispatchAction equivalence (facebook#14752) //<Jessica Franco>//
- **[e489c3f9c](facebook/react@e489c3f9c )**: Update the version with Hooks proposal in README (facebook#14751) //<SToneX>//
- **[c21c41ecf](facebook/react@c21c41ecf )**: Tweak invalid Hook warning and error (facebook#14747) //<Dan Abramov>//
- **[fec00a869](facebook/react@fec00a869 )**: Typo in comment (facebook#14739) //<Deniz Susman>//
- **[66eb29374](facebook/react@66eb29374 )**: Restrict effect return type to a function or nothing (facebook#14119) //<Andrew Clark>//
- **[51c07912a](facebook/react@51c07912a )**: Warn when second argument is passed to useCallback (facebook#14729) //<Dan Abramov>//
- **[70d407583](facebook/react@70d407583 )**: Move Hook mismatch warning to first mismatch site (facebook#14720) //<Andrew Clark>//
- **[ba6477aa3](facebook/react@ba6477aa3 )**: Improve Reducer Hook's lazy init API (facebook#14723) //<Andrew Clark>//
- **[cb1ff430e](facebook/react@cb1ff430e )**: Phased dispatcher (facebook#14701) //<Andrew Clark>//
- **[9d483dcfd](facebook/react@9d483dcfd )**: Spelling abitrarily -> arbitrarily (facebook#14710) //<Peter Donald>//
- **[e19c9e106](facebook/react@e19c9e106 )**: Fix issue with multiple code branches in hooks linter (facebook#14661) //<Yurick>//
- **[f11a9c1cb](facebook/react@f11a9c1cb )**: State update bug in concurrent mode (facebook#14698) //<Brian Vaughn>//
- **[e679a4b6e](facebook/react@e679a4b6e )**: Fix typo in code comment (facebook#14696) //<Greg Hurrell>//
- **[8bcc88f2e](facebook/react@8bcc88f2e )**: Make all readContext() and Hook-in-a-Hook checks DEV-only (facebook#14677) //<Dan Abramov>//
- **[6cb26774e](facebook/react@6cb26774e )**: Enable hooks! (facebook#14679) //<Brian Vaughn>//
- **[73962c366](facebook/react@73962c366 )**: Revert "Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652)" (facebook#14654) //<Dan Abramov>//
- **[994439228](facebook/react@994439228 )**: Put DEV-only code into DEV blocks (facebook#14673) //<Dan Abramov>//
- **[f0befae65](facebook/react@f0befae65 )**: Tweak context invariant message (facebook#14671) //<Dan Abramov>//
- **[a129259ad](facebook/react@a129259ad )**: Disallow reading context during useMemo etc (facebook#14653) //<Dan Abramov>//
- **[c068d31cc](facebook/react@c068d31cc )**: Add unit tests for concurrent mode event dispatching (facebook#14415) //<Sebastian Markbåge>//
- **[38247cba3](facebook/react@38247cba3 )**: --save is no longer needed (facebook#14302) //<SamCortopassi>//
- **[3f0bcaf0d](facebook/react@3f0bcaf0d )**: Importing React for the first example. (facebook#14346) //<Ramón Chancay Ortega>//
- **[ecd919a2f](facebook/react@ecd919a2f )**: RFC: warn when returning different hooks on subsequent renders (facebook#14585) //<Sunil Pai>//
- **[3fbebb2a0](facebook/react@3fbebb2a0 )**: Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652) //<Dan Abramov>//
- **[5fce6488c](facebook/react@5fce6488c )**: Revert "Disallow reading context during useMemo etc" (facebook#14651) //<Dan Abramov>//
- **[fe2ecd276](facebook/react@fe2ecd276 )**: Add test coverage for readContext() on the server (facebook#14649) //<Dan Abramov>//
- **[8f45a7fdc](facebook/react@8f45a7fdc )**: Warn about incorrect use of useImperativeHandle() (facebook#14647) //<Dan Abramov>//
- **[1fcbd2243](facebook/react@1fcbd2243 )**: Disallow reading context during useMemo etc (facebook#14648) //<Dan Abramov>//
- **[2a084f51a](facebook/react@2a084f51a )**: Warn about refs on lazy function components (facebook#14645) //<Dan Abramov>//
- **[b5a3df6e8](facebook/react@b5a3df6e8 )**: Fix typo (facebook#14560) //<Linchengyi>//
- **[9c146e675](facebook/react@9c146e675 )**: fix typo (facebook#14316) //<liunian>//
- **[baa6d40fc](facebook/react@baa6d40fc )**: Mention forwardRef() in <Fn ref={...} /> errors and warnings (facebook#14644) //<Dan Abramov>//
- **[a1414e894](facebook/react@a1414e894 )**: Double-render function components with Hooks in DEV in StrictMode (facebook#14643) //<Dan Abramov>//
- **[10a7a5b5c](facebook/react@10a7a5b5c )**: Fix synchronous thenable rejection (facebook#14633) //<Dan Abramov>//
- **[a2fa6eb98](facebook/react@a2fa6eb98 )**: Move lazy._result assignment (facebook#14632) //<Dan Abramov>//
- **[9120f6c2d](facebook/react@9120f6c2d )**: Support sync thenables for lazy() (facebook#14626) //<Dan Abramov>//
- **[b66e6e41e](facebook/react@b66e6e41e )**: Add directory details to the package.json of all packages (facebook#14628) //<Grey Baker>//
- **[177fb7635](facebook/react@177fb7635 )**: Warn when second callback is passed to setState/dispatch in Hooks (facebook#14625) //<Dan Abramov>//
- **[d17d0b99c](facebook/react@d17d0b99c )**: Use public context.report interface in eslint rules (facebook#14623) //<Sebastian Silbermann>//
- **[4f332885a](facebook/react@4f332885a )**: Fix shallow renderer set instance state after gDSFP before calling sCU (facebook#14613) //<Yi-Shan, Chen>//
- **[e1cd83e49](facebook/react@e1cd83e49 )**: Throw an error when using hooks inside useMemo/useState/useReducer, or .memo's comparator (facebook#14608) //<Sunil Pai>//
- **[be457ca68](facebook/react@be457ca68 )**: Small tweaks to SSR to match facebook#14594 (facebook#14618) //<Dan Abramov>//
- **[17d70df91](facebook/react@17d70df91 )**: Warn when mixing createRoot() and old APIs (facebook#14615) //<Dan Abramov>//
- **[4feab7fc9](facebook/react@4feab7fc9 )**: Add hooks support to ReactShallowRenderer (facebook#14567) //<Dominic Gannaway>//
- **[1454a8be0](facebook/react@1454a8be0 )**: Don't bother comparing constructor when deps are not provided (facebook#14594) //<Andrew Clark>//
- **[71b64d521](facebook/react@71b64d521 )**: Warn if number of hooks increases (facebook#14591) //<Andrew Clark>//
- **[790c8ef04](facebook/react@790c8ef04 )**: Allow useReducer to bail out of rendering by returning previous state (facebook#14569) //<Andrew Clark>//
- **[7ab8a8e97](facebook/react@7ab8a8e97 )**: Added Flow type to keep hooks dispatchers in-sync (facebook#14599) //<Brian Vaughn>//
- **[4392e3821](facebook/react@4392e3821 )**: useDebugValue should throw if used in a class component (facebook#14601) //<Brian Vaughn>//
- **[153a0b598](facebook/react@153a0b598 )**: Add noop useDebugValue hook to partial/server renderer (facebook#14597) //<Brian Vaughn>//
- **[7ad9806d1](facebook/react@7ad9806d1 )**: Tweak to avoid property read (facebook#14593) //<Brandon Dail>//
- **[0fc154751](facebook/react@0fc154751 )**: Avoid new Set([iterable]) for thenables (facebook#14592) //<Brandon Dail>//
- **[edb1f5956](facebook/react@edb1f5956 )**: Support configurable labels for custom hooks (facebook#14559) //<Brian Vaughn>//
- **[3e15b1c69](facebook/react@3e15b1c69 )**: make a fork for ReactCurrentDispatcher (facebook#14588) //<Sunil Pai>//
- **[0005d1e3f](facebook/react@0005d1e3f )**: Fix typo (facebook#14576) //<Carl Mungazi>//
- **[f290138d3](facebook/react@f290138d3 )**: react-debug-tools accepts currentDispatcher ref as param (facebook#14556) //<Brian Vaughn>//
- **[b4ad8e947](facebook/react@b4ad8e947 )**: rename useImperativeMethods -> useImperativeHandle (facebook#14565) //<Sunil Pai>//
- **[ab03e3d65](facebook/react@ab03e3d65 )**: Inject ReactCurrentDispatcher ref to DevTools (facebook#14550) //<Brian Vaughn>//
- **[19ef0ec11](facebook/react@19ef0ec11 )**: Separate current owner and dispatcher (facebook#14548) //<Brian Vaughn>//
- **[a9b035b0c](facebook/react@a9b035b0c )**: Separate Object.is polyfill (facebook#14334) //<Maksim Markelov>//
- **[547e059f0](facebook/react@547e059f0 )**: Simplify wording of key warning (facebook#14503) //<Sophie Alpert>//
- **[3494ee57e](facebook/react@3494ee57e )**: Update ReactUpdateQueue.js (facebook#14521) //<Carl Mungazi>//
- **[659c13963](facebook/react@659c13963 )**: Update ReactFiberScheduler.js (facebook#14477) //<Carl Mungazi>//
- **[c695b2384](facebook/react@c695b2384 )**: React v16.7.0 //<Andrew Clark>//
- **[1c5aa2f23](facebook/react@1c5aa2f23 )**: Move SchedulerFeatureFlags fork to src directory to fix lint //<Andrew Clark>//
- **[653bc582f](facebook/react@653bc582f )**: Create separate SchedulerFeatureFlags instead of using ReactFeatureFlags (facebook#14455) //<Andrew Clark>//
- **[8bfef0da5](facebook/react@8bfef0da5 )**: Make scheduler debugging feature flag static //<Andrew Clark>//
- **[4a1072194](facebook/react@4a1072194 )**: Memoize promise listeners to prevent exponential growth (facebook#14429) //<Andrew Clark>//
- **[535804f5c](facebook/react@535804f5c )**: Removed Fabric-specific feature flag files and updated Rollup to use the (non-Fabric) React Native flag files. (facebook#14437) //<Brian Vaughn>//
- **[2743fb7b2](facebook/react@2743fb7b2 )**: Enable hooks by default for FB React Native renderer (facebook#14435) //<Brian Vaughn>//
- **[7325ebe4d](facebook/react@7325ebe4d )**: Inject overrideProps() fn to DevTools (facebook#14427) //<Brian Vaughn>//
- **[a22880e5e](facebook/react@a22880e5e )**: Add support for Suspense & lazy() to the react-is package (facebook#14423) //<Pleun Vanderbauwhede>//
- **[947bddd5c](facebook/react@947bddd5c )**: Remove redundant argument of getPlugins function (facebook#14419) //<Heaven>//
- **[8df4d59be](facebook/react@8df4d59be )**: Implement pauseExecution, continueExecution, dumpQueue for Scheduler (facebook#14053) //<Kevin Chavez>//
- **[5bb4ad737](facebook/react@5bb4ad737 )**: Added ErrorBoundary tests for useEffect and useLayoutEffect (facebook#14401) //<Brian Vaughn>//
- **[98eb5ae53](facebook/react@98eb5ae53 )**: TestRenderer toJSON should not expose the Array wrapper Suspense uses for hidden trees (facebook#14392) //<Brian Vaughn>//
- **[39489e767](facebook/react@39489e767 )**: Enable hooks in fabric (facebook#14301) //<Spencer Ahrens>//
- **[1dc108e58](facebook/react@1dc108e58 )**: Tweaked wording for v8 "performance cliff" issue //<Brian Vaughn>//

Release Notes:
[GENERAL] [Changed] - React sync for revisions 6bf5e85...aa94237 (React 16.8.1)

Differential Revision: D13976467

fbshipit-source-id: 728fbf4fecde33184b6b36f863f2dfe940becc27
hramos added a commit to hramos/react-native that referenced this pull request Feb 7, 2019
Summary:
Pull Request resolved: facebook#23320

@public
This sync includes the following changes:
- **[45fc46bfa](facebook/react@45fc46bfa )**: 16.8.1 packages //<Brian Vaughn>//
- **[f2e2637c8](facebook/react@f2e2637c8 )**: Backwards compat fix for ReactCurrentDispatcher on older react versions (facebook#14770) //<Brian Vaughn>//
- **[1107b9673](facebook/react@1107b9673 )**: [TestUtils.act] warn when using TestUtils.act in node (facebook#14768) //<Sunil Pai>//
- **[0975ea327](facebook/react@0975ea327 )**: eslint-plugin-react-hooks v1.0.0 //<Brian Vaughn>//
- **[bc9818f24](facebook/react@bc9818f24 )**: Scheduler.unstable_next (facebook#14756) //<Andrew Clark>//
- **[ce6ecd3fb](facebook/react@ce6ecd3fb )**: Add 16.8.0 changelog and update some READMEs (facebook#14692) //<Dan Abramov>//
- **[008a2ab9c](facebook/react@008a2ab9c )**: 16.8.0 //<Brian Vaughn>//
- **[d1326f466](facebook/react@d1326f466 )**: [TestUtils.act] fix return result checking  (facebook#14758) //<Sunil Pai>//
- **[267ed9814](facebook/react@267ed9814 )**: expose `TestUtils.act()` for batching actions in tests (facebook#14744) //<Sunil Pai>//
- **[fb3f7bfde](facebook/react@fb3f7bfde )**: Avoid importing Scheduler directly (facebook#14757) //<Andrew Clark>//
- **[e602b5291](facebook/react@e602b5291 )**: Use SameValue instead of === to check for dispatchAction equivalence (facebook#14752) //<Jessica Franco>//
- **[e489c3f9c](facebook/react@e489c3f9c )**: Update the version with Hooks proposal in README (facebook#14751) //<SToneX>//
- **[c21c41ecf](facebook/react@c21c41ecf )**: Tweak invalid Hook warning and error (facebook#14747) //<Dan Abramov>//
- **[fec00a869](facebook/react@fec00a869 )**: Typo in comment (facebook#14739) //<Deniz Susman>//
- **[66eb29374](facebook/react@66eb29374 )**: Restrict effect return type to a function or nothing (facebook#14119) //<Andrew Clark>//
- **[51c07912a](facebook/react@51c07912a )**: Warn when second argument is passed to useCallback (facebook#14729) //<Dan Abramov>//
- **[70d407583](facebook/react@70d407583 )**: Move Hook mismatch warning to first mismatch site (facebook#14720) //<Andrew Clark>//
- **[ba6477aa3](facebook/react@ba6477aa3 )**: Improve Reducer Hook's lazy init API (facebook#14723) //<Andrew Clark>//
- **[cb1ff430e](facebook/react@cb1ff430e )**: Phased dispatcher (facebook#14701) //<Andrew Clark>//
- **[9d483dcfd](facebook/react@9d483dcfd )**: Spelling abitrarily -> arbitrarily (facebook#14710) //<Peter Donald>//
- **[e19c9e106](facebook/react@e19c9e106 )**: Fix issue with multiple code branches in hooks linter (facebook#14661) //<Yurick>//
- **[f11a9c1cb](facebook/react@f11a9c1cb )**: State update bug in concurrent mode (facebook#14698) //<Brian Vaughn>//
- **[e679a4b6e](facebook/react@e679a4b6e )**: Fix typo in code comment (facebook#14696) //<Greg Hurrell>//
- **[8bcc88f2e](facebook/react@8bcc88f2e )**: Make all readContext() and Hook-in-a-Hook checks DEV-only (facebook#14677) //<Dan Abramov>//
- **[6cb26774e](facebook/react@6cb26774e )**: Enable hooks! (facebook#14679) //<Brian Vaughn>//
- **[73962c366](facebook/react@73962c366 )**: Revert "Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652)" (facebook#14654) //<Dan Abramov>//
- **[994439228](facebook/react@994439228 )**: Put DEV-only code into DEV blocks (facebook#14673) //<Dan Abramov>//
- **[f0befae65](facebook/react@f0befae65 )**: Tweak context invariant message (facebook#14671) //<Dan Abramov>//
- **[a129259ad](facebook/react@a129259ad )**: Disallow reading context during useMemo etc (facebook#14653) //<Dan Abramov>//
- **[c068d31cc](facebook/react@c068d31cc )**: Add unit tests for concurrent mode event dispatching (facebook#14415) //<Sebastian Markbåge>//
- **[38247cba3](facebook/react@38247cba3 )**: --save is no longer needed (facebook#14302) //<SamCortopassi>//
- **[3f0bcaf0d](facebook/react@3f0bcaf0d )**: Importing React for the first example. (facebook#14346) //<Ramón Chancay Ortega>//
- **[ecd919a2f](facebook/react@ecd919a2f )**: RFC: warn when returning different hooks on subsequent renders (facebook#14585) //<Sunil Pai>//
- **[3fbebb2a0](facebook/react@3fbebb2a0 )**: Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652) //<Dan Abramov>//
- **[5fce6488c](facebook/react@5fce6488c )**: Revert "Disallow reading context during useMemo etc" (facebook#14651) //<Dan Abramov>//
- **[fe2ecd276](facebook/react@fe2ecd276 )**: Add test coverage for readContext() on the server (facebook#14649) //<Dan Abramov>//
- **[8f45a7fdc](facebook/react@8f45a7fdc )**: Warn about incorrect use of useImperativeHandle() (facebook#14647) //<Dan Abramov>//
- **[1fcbd2243](facebook/react@1fcbd2243 )**: Disallow reading context during useMemo etc (facebook#14648) //<Dan Abramov>//
- **[2a084f51a](facebook/react@2a084f51a )**: Warn about refs on lazy function components (facebook#14645) //<Dan Abramov>//
- **[b5a3df6e8](facebook/react@b5a3df6e8 )**: Fix typo (facebook#14560) //<Linchengyi>//
- **[9c146e675](facebook/react@9c146e675 )**: fix typo (facebook#14316) //<liunian>//
- **[baa6d40fc](facebook/react@baa6d40fc )**: Mention forwardRef() in <Fn ref={...} /> errors and warnings (facebook#14644) //<Dan Abramov>//
- **[a1414e894](facebook/react@a1414e894 )**: Double-render function components with Hooks in DEV in StrictMode (facebook#14643) //<Dan Abramov>//
- **[10a7a5b5c](facebook/react@10a7a5b5c )**: Fix synchronous thenable rejection (facebook#14633) //<Dan Abramov>//
- **[a2fa6eb98](facebook/react@a2fa6eb98 )**: Move lazy._result assignment (facebook#14632) //<Dan Abramov>//
- **[9120f6c2d](facebook/react@9120f6c2d )**: Support sync thenables for lazy() (facebook#14626) //<Dan Abramov>//
- **[b66e6e41e](facebook/react@b66e6e41e )**: Add directory details to the package.json of all packages (facebook#14628) //<Grey Baker>//
- **[177fb7635](facebook/react@177fb7635 )**: Warn when second callback is passed to setState/dispatch in Hooks (facebook#14625) //<Dan Abramov>//
- **[d17d0b99c](facebook/react@d17d0b99c )**: Use public context.report interface in eslint rules (facebook#14623) //<Sebastian Silbermann>//
- **[4f332885a](facebook/react@4f332885a )**: Fix shallow renderer set instance state after gDSFP before calling sCU (facebook#14613) //<Yi-Shan, Chen>//
- **[e1cd83e49](facebook/react@e1cd83e49 )**: Throw an error when using hooks inside useMemo/useState/useReducer, or .memo's comparator (facebook#14608) //<Sunil Pai>//
- **[be457ca68](facebook/react@be457ca68 )**: Small tweaks to SSR to match facebook#14594 (facebook#14618) //<Dan Abramov>//
- **[17d70df91](facebook/react@17d70df91 )**: Warn when mixing createRoot() and old APIs (facebook#14615) //<Dan Abramov>//
- **[4feab7fc9](facebook/react@4feab7fc9 )**: Add hooks support to ReactShallowRenderer (facebook#14567) //<Dominic Gannaway>//
- **[1454a8be0](facebook/react@1454a8be0 )**: Don't bother comparing constructor when deps are not provided (facebook#14594) //<Andrew Clark>//
- **[71b64d521](facebook/react@71b64d521 )**: Warn if number of hooks increases (facebook#14591) //<Andrew Clark>//
- **[790c8ef04](facebook/react@790c8ef04 )**: Allow useReducer to bail out of rendering by returning previous state (facebook#14569) //<Andrew Clark>//
- **[7ab8a8e97](facebook/react@7ab8a8e97 )**: Added Flow type to keep hooks dispatchers in-sync (facebook#14599) //<Brian Vaughn>//
- **[4392e3821](facebook/react@4392e3821 )**: useDebugValue should throw if used in a class component (facebook#14601) //<Brian Vaughn>//
- **[153a0b598](facebook/react@153a0b598 )**: Add noop useDebugValue hook to partial/server renderer (facebook#14597) //<Brian Vaughn>//
- **[7ad9806d1](facebook/react@7ad9806d1 )**: Tweak to avoid property read (facebook#14593) //<Brandon Dail>//
- **[0fc154751](facebook/react@0fc154751 )**: Avoid new Set([iterable]) for thenables (facebook#14592) //<Brandon Dail>//
- **[edb1f5956](facebook/react@edb1f5956 )**: Support configurable labels for custom hooks (facebook#14559) //<Brian Vaughn>//
- **[3e15b1c69](facebook/react@3e15b1c69 )**: make a fork for ReactCurrentDispatcher (facebook#14588) //<Sunil Pai>//
- **[0005d1e3f](facebook/react@0005d1e3f )**: Fix typo (facebook#14576) //<Carl Mungazi>//
- **[f290138d3](facebook/react@f290138d3 )**: react-debug-tools accepts currentDispatcher ref as param (facebook#14556) //<Brian Vaughn>//
- **[b4ad8e947](facebook/react@b4ad8e947 )**: rename useImperativeMethods -> useImperativeHandle (facebook#14565) //<Sunil Pai>//
- **[ab03e3d65](facebook/react@ab03e3d65 )**: Inject ReactCurrentDispatcher ref to DevTools (facebook#14550) //<Brian Vaughn>//
- **[19ef0ec11](facebook/react@19ef0ec11 )**: Separate current owner and dispatcher (facebook#14548) //<Brian Vaughn>//
- **[a9b035b0c](facebook/react@a9b035b0c )**: Separate Object.is polyfill (facebook#14334) //<Maksim Markelov>//
- **[547e059f0](facebook/react@547e059f0 )**: Simplify wording of key warning (facebook#14503) //<Sophie Alpert>//
- **[3494ee57e](facebook/react@3494ee57e )**: Update ReactUpdateQueue.js (facebook#14521) //<Carl Mungazi>//
- **[659c13963](facebook/react@659c13963 )**: Update ReactFiberScheduler.js (facebook#14477) //<Carl Mungazi>//
- **[c695b2384](facebook/react@c695b2384 )**: React v16.7.0 //<Andrew Clark>//
- **[1c5aa2f23](facebook/react@1c5aa2f23 )**: Move SchedulerFeatureFlags fork to src directory to fix lint //<Andrew Clark>//
- **[653bc582f](facebook/react@653bc582f )**: Create separate SchedulerFeatureFlags instead of using ReactFeatureFlags (facebook#14455) //<Andrew Clark>//
- **[8bfef0da5](facebook/react@8bfef0da5 )**: Make scheduler debugging feature flag static //<Andrew Clark>//
- **[4a1072194](facebook/react@4a1072194 )**: Memoize promise listeners to prevent exponential growth (facebook#14429) //<Andrew Clark>//
- **[535804f5c](facebook/react@535804f5c )**: Removed Fabric-specific feature flag files and updated Rollup to use the (non-Fabric) React Native flag files. (facebook#14437) //<Brian Vaughn>//
- **[2743fb7b2](facebook/react@2743fb7b2 )**: Enable hooks by default for FB React Native renderer (facebook#14435) //<Brian Vaughn>//
- **[7325ebe4d](facebook/react@7325ebe4d )**: Inject overrideProps() fn to DevTools (facebook#14427) //<Brian Vaughn>//
- **[a22880e5e](facebook/react@a22880e5e )**: Add support for Suspense & lazy() to the react-is package (facebook#14423) //<Pleun Vanderbauwhede>//
- **[947bddd5c](facebook/react@947bddd5c )**: Remove redundant argument of getPlugins function (facebook#14419) //<Heaven>//
- **[8df4d59be](facebook/react@8df4d59be )**: Implement pauseExecution, continueExecution, dumpQueue for Scheduler (facebook#14053) //<Kevin Chavez>//
- **[5bb4ad737](facebook/react@5bb4ad737 )**: Added ErrorBoundary tests for useEffect and useLayoutEffect (facebook#14401) //<Brian Vaughn>//
- **[98eb5ae53](facebook/react@98eb5ae53 )**: TestRenderer toJSON should not expose the Array wrapper Suspense uses for hidden trees (facebook#14392) //<Brian Vaughn>//
- **[39489e767](facebook/react@39489e767 )**: Enable hooks in fabric (facebook#14301) //<Spencer Ahrens>//
- **[1dc108e58](facebook/react@1dc108e58 )**: Tweaked wording for v8 "performance cliff" issue //<Brian Vaughn>//

Release Notes:
[GENERAL] [Changed] - React sync for revisions 6bf5e85...aa94237 (React 16.8.1)

Differential Revision: D13976467

fbshipit-source-id: 72db51d098109081c19bce79129a7bb5932d77f5
hramos added a commit to hramos/react-native that referenced this pull request Feb 7, 2019
Summary:
This sync includes the following changes:
- **[45fc46bfa](facebook/react@45fc46bfa )**: 16.8.1 packages //<Brian Vaughn>//
- **[f2e2637c8](facebook/react@f2e2637c8 )**: Backwards compat fix for ReactCurrentDispatcher on older react versions (facebook#14770) //<Brian Vaughn>//
- **[1107b9673](facebook/react@1107b9673 )**: [TestUtils.act] warn when using TestUtils.act in node (facebook#14768) //<Sunil Pai>//
- **[0975ea327](facebook/react@0975ea327 )**: eslint-plugin-react-hooks v1.0.0 //<Brian Vaughn>//
- **[bc9818f24](facebook/react@bc9818f24 )**: Scheduler.unstable_next (facebook#14756) //<Andrew Clark>//
- **[ce6ecd3fb](facebook/react@ce6ecd3fb )**: Add 16.8.0 changelog and update some READMEs (facebook#14692) //<Dan Abramov>//
- **[008a2ab9c](facebook/react@008a2ab9c )**: 16.8.0 //<Brian Vaughn>//
- **[d1326f466](facebook/react@d1326f466 )**: [TestUtils.act] fix return result checking  (facebook#14758) //<Sunil Pai>//
- **[267ed9814](facebook/react@267ed9814 )**: expose `TestUtils.act()` for batching actions in tests (facebook#14744) //<Sunil Pai>//
- **[fb3f7bfde](facebook/react@fb3f7bfde )**: Avoid importing Scheduler directly (facebook#14757) //<Andrew Clark>//
- **[e602b5291](facebook/react@e602b5291 )**: Use SameValue instead of === to check for dispatchAction equivalence (facebook#14752) //<Jessica Franco>//
- **[e489c3f9c](facebook/react@e489c3f9c )**: Update the version with Hooks proposal in README (facebook#14751) //<SToneX>//
- **[c21c41ecf](facebook/react@c21c41ecf )**: Tweak invalid Hook warning and error (facebook#14747) //<Dan Abramov>//
- **[fec00a869](facebook/react@fec00a869 )**: Typo in comment (facebook#14739) //<Deniz Susman>//
- **[66eb29374](facebook/react@66eb29374 )**: Restrict effect return type to a function or nothing (facebook#14119) //<Andrew Clark>//
- **[51c07912a](facebook/react@51c07912a )**: Warn when second argument is passed to useCallback (facebook#14729) //<Dan Abramov>//
- **[70d407583](facebook/react@70d407583 )**: Move Hook mismatch warning to first mismatch site (facebook#14720) //<Andrew Clark>//
- **[ba6477aa3](facebook/react@ba6477aa3 )**: Improve Reducer Hook's lazy init API (facebook#14723) //<Andrew Clark>//
- **[cb1ff430e](facebook/react@cb1ff430e )**: Phased dispatcher (facebook#14701) //<Andrew Clark>//
- **[9d483dcfd](facebook/react@9d483dcfd )**: Spelling abitrarily -> arbitrarily (facebook#14710) //<Peter Donald>//
- **[e19c9e106](facebook/react@e19c9e106 )**: Fix issue with multiple code branches in hooks linter (facebook#14661) //<Yurick>//
- **[f11a9c1cb](facebook/react@f11a9c1cb )**: State update bug in concurrent mode (facebook#14698) //<Brian Vaughn>//
- **[e679a4b6e](facebook/react@e679a4b6e )**: Fix typo in code comment (facebook#14696) //<Greg Hurrell>//
- **[8bcc88f2e](facebook/react@8bcc88f2e )**: Make all readContext() and Hook-in-a-Hook checks DEV-only (facebook#14677) //<Dan Abramov>//
- **[6cb26774e](facebook/react@6cb26774e )**: Enable hooks! (facebook#14679) //<Brian Vaughn>//
- **[73962c366](facebook/react@73962c366 )**: Revert "Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652)" (facebook#14654) //<Dan Abramov>//
- **[994439228](facebook/react@994439228 )**: Put DEV-only code into DEV blocks (facebook#14673) //<Dan Abramov>//
- **[f0befae65](facebook/react@f0befae65 )**: Tweak context invariant message (facebook#14671) //<Dan Abramov>//
- **[a129259ad](facebook/react@a129259ad )**: Disallow reading context during useMemo etc (facebook#14653) //<Dan Abramov>//
- **[c068d31cc](facebook/react@c068d31cc )**: Add unit tests for concurrent mode event dispatching (facebook#14415) //<Sebastian Markbåge>//
- **[38247cba3](facebook/react@38247cba3 )**: --save is no longer needed (facebook#14302) //<SamCortopassi>//
- **[3f0bcaf0d](facebook/react@3f0bcaf0d )**: Importing React for the first example. (facebook#14346) //<Ramón Chancay Ortega>//
- **[ecd919a2f](facebook/react@ecd919a2f )**: RFC: warn when returning different hooks on subsequent renders (facebook#14585) //<Sunil Pai>//
- **[3fbebb2a0](facebook/react@3fbebb2a0 )**: Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652) //<Dan Abramov>//
- **[5fce6488c](facebook/react@5fce6488c )**: Revert "Disallow reading context during useMemo etc" (facebook#14651) //<Dan Abramov>//
- **[fe2ecd276](facebook/react@fe2ecd276 )**: Add test coverage for readContext() on the server (facebook#14649) //<Dan Abramov>//
- **[8f45a7fdc](facebook/react@8f45a7fdc )**: Warn about incorrect use of useImperativeHandle() (facebook#14647) //<Dan Abramov>//
- **[1fcbd2243](facebook/react@1fcbd2243 )**: Disallow reading context during useMemo etc (facebook#14648) //<Dan Abramov>//
- **[2a084f51a](facebook/react@2a084f51a )**: Warn about refs on lazy function components (facebook#14645) //<Dan Abramov>//
- **[b5a3df6e8](facebook/react@b5a3df6e8 )**: Fix typo (facebook#14560) //<Linchengyi>//
- **[9c146e675](facebook/react@9c146e675 )**: fix typo (facebook#14316) //<liunian>//
- **[baa6d40fc](facebook/react@baa6d40fc )**: Mention forwardRef() in <Fn ref={...} /> errors and warnings (facebook#14644) //<Dan Abramov>//
- **[a1414e894](facebook/react@a1414e894 )**: Double-render function components with Hooks in DEV in StrictMode (facebook#14643) //<Dan Abramov>//
- **[10a7a5b5c](facebook/react@10a7a5b5c )**: Fix synchronous thenable rejection (facebook#14633) //<Dan Abramov>//
- **[a2fa6eb98](facebook/react@a2fa6eb98 )**: Move lazy._result assignment (facebook#14632) //<Dan Abramov>//
- **[9120f6c2d](facebook/react@9120f6c2d )**: Support sync thenables for lazy() (facebook#14626) //<Dan Abramov>//
- **[b66e6e41e](facebook/react@b66e6e41e )**: Add directory details to the package.json of all packages (facebook#14628) //<Grey Baker>//
- **[177fb7635](facebook/react@177fb7635 )**: Warn when second callback is passed to setState/dispatch in Hooks (facebook#14625) //<Dan Abramov>//
- **[d17d0b99c](facebook/react@d17d0b99c )**: Use public context.report interface in eslint rules (facebook#14623) //<Sebastian Silbermann>//
- **[4f332885a](facebook/react@4f332885a )**: Fix shallow renderer set instance state after gDSFP before calling sCU (facebook#14613) //<Yi-Shan, Chen>//
- **[e1cd83e49](facebook/react@e1cd83e49 )**: Throw an error when using hooks inside useMemo/useState/useReducer, or .memo's comparator (facebook#14608) //<Sunil Pai>//
- **[be457ca68](facebook/react@be457ca68 )**: Small tweaks to SSR to match facebook#14594 (facebook#14618) //<Dan Abramov>//
- **[17d70df91](facebook/react@17d70df91 )**: Warn when mixing createRoot() and old APIs (facebook#14615) //<Dan Abramov>//
- **[4feab7fc9](facebook/react@4feab7fc9 )**: Add hooks support to ReactShallowRenderer (facebook#14567) //<Dominic Gannaway>//
- **[1454a8be0](facebook/react@1454a8be0 )**: Don't bother comparing constructor when deps are not provided (facebook#14594) //<Andrew Clark>//
- **[71b64d521](facebook/react@71b64d521 )**: Warn if number of hooks increases (facebook#14591) //<Andrew Clark>//
- **[790c8ef04](facebook/react@790c8ef04 )**: Allow useReducer to bail out of rendering by returning previous state (facebook#14569) //<Andrew Clark>//
- **[7ab8a8e97](facebook/react@7ab8a8e97 )**: Added Flow type to keep hooks dispatchers in-sync (facebook#14599) //<Brian Vaughn>//
- **[4392e3821](facebook/react@4392e3821 )**: useDebugValue should throw if used in a class component (facebook#14601) //<Brian Vaughn>//
- **[153a0b598](facebook/react@153a0b598 )**: Add noop useDebugValue hook to partial/server renderer (facebook#14597) //<Brian Vaughn>//
- **[7ad9806d1](facebook/react@7ad9806d1 )**: Tweak to avoid property read (facebook#14593) //<Brandon Dail>//
- **[0fc154751](facebook/react@0fc154751 )**: Avoid new Set([iterable]) for thenables (facebook#14592) //<Brandon Dail>//
- **[edb1f5956](facebook/react@edb1f5956 )**: Support configurable labels for custom hooks (facebook#14559) //<Brian Vaughn>//
- **[3e15b1c69](facebook/react@3e15b1c69 )**: make a fork for ReactCurrentDispatcher (facebook#14588) //<Sunil Pai>//
- **[0005d1e3f](facebook/react@0005d1e3f )**: Fix typo (facebook#14576) //<Carl Mungazi>//
- **[f290138d3](facebook/react@f290138d3 )**: react-debug-tools accepts currentDispatcher ref as param (facebook#14556) //<Brian Vaughn>//
- **[b4ad8e947](facebook/react@b4ad8e947 )**: rename useImperativeMethods -> useImperativeHandle (facebook#14565) //<Sunil Pai>//
- **[ab03e3d65](facebook/react@ab03e3d65 )**: Inject ReactCurrentDispatcher ref to DevTools (facebook#14550) //<Brian Vaughn>//
- **[19ef0ec11](facebook/react@19ef0ec11 )**: Separate current owner and dispatcher (facebook#14548) //<Brian Vaughn>//
- **[a9b035b0c](facebook/react@a9b035b0c )**: Separate Object.is polyfill (facebook#14334) //<Maksim Markelov>//
- **[547e059f0](facebook/react@547e059f0 )**: Simplify wording of key warning (facebook#14503) //<Sophie Alpert>//
- **[3494ee57e](facebook/react@3494ee57e )**: Update ReactUpdateQueue.js (facebook#14521) //<Carl Mungazi>//
- **[659c13963](facebook/react@659c13963 )**: Update ReactFiberScheduler.js (facebook#14477) //<Carl Mungazi>//
- **[c695b2384](facebook/react@c695b2384 )**: React v16.7.0 //<Andrew Clark>//
- **[1c5aa2f23](facebook/react@1c5aa2f23 )**: Move SchedulerFeatureFlags fork to src directory to fix lint //<Andrew Clark>//
- **[653bc582f](facebook/react@653bc582f )**: Create separate SchedulerFeatureFlags instead of using ReactFeatureFlags (facebook#14455) //<Andrew Clark>//
- **[8bfef0da5](facebook/react@8bfef0da5 )**: Make scheduler debugging feature flag static //<Andrew Clark>//
- **[4a1072194](facebook/react@4a1072194 )**: Memoize promise listeners to prevent exponential growth (facebook#14429) //<Andrew Clark>//
- **[535804f5c](facebook/react@535804f5c )**: Removed Fabric-specific feature flag files and updated Rollup to use the (non-Fabric) React Native flag files. (facebook#14437) //<Brian Vaughn>//
- **[2743fb7b2](facebook/react@2743fb7b2 )**: Enable hooks by default for FB React Native renderer (facebook#14435) //<Brian Vaughn>//
- **[7325ebe4d](facebook/react@7325ebe4d )**: Inject overrideProps() fn to DevTools (facebook#14427) //<Brian Vaughn>//
- **[a22880e5e](facebook/react@a22880e5e )**: Add support for Suspense & lazy() to the react-is package (facebook#14423) //<Pleun Vanderbauwhede>//
- **[947bddd5c](facebook/react@947bddd5c )**: Remove redundant argument of getPlugins function (facebook#14419) //<Heaven>//
- **[8df4d59be](facebook/react@8df4d59be )**: Implement pauseExecution, continueExecution, dumpQueue for Scheduler (facebook#14053) //<Kevin Chavez>//
- **[5bb4ad737](facebook/react@5bb4ad737 )**: Added ErrorBoundary tests for useEffect and useLayoutEffect (facebook#14401) //<Brian Vaughn>//
- **[98eb5ae53](facebook/react@98eb5ae53 )**: TestRenderer toJSON should not expose the Array wrapper Suspense uses for hidden trees (facebook#14392) //<Brian Vaughn>//
- **[39489e767](facebook/react@39489e767 )**: Enable hooks in fabric (facebook#14301) //<Spencer Ahrens>//
- **[1dc108e58](facebook/react@1dc108e58 )**: Tweaked wording for v8 "performance cliff" issue //<Brian Vaughn>//

Release Notes:
[GENERAL] [Changed] - React sync for revisions 6bf5e85...aa94237 (React 16.8.1)

Pull Request resolved: facebook#23320

Differential Revision: D13976467

fbshipit-source-id: 4d169f105c8964741cf3d8f9bc192d9955637cea
hramos added a commit to hramos/react-native that referenced this pull request Feb 7, 2019
Summary:
This sync includes the following changes:
- **[45fc46bfa](facebook/react@45fc46bfa )**: 16.8.1 packages //<Brian Vaughn>//
- **[f2e2637c8](facebook/react@f2e2637c8 )**: Backwards compat fix for ReactCurrentDispatcher on older react versions (facebook#14770) //<Brian Vaughn>//
- **[1107b9673](facebook/react@1107b9673 )**: [TestUtils.act] warn when using TestUtils.act in node (facebook#14768) //<Sunil Pai>//
- **[0975ea327](facebook/react@0975ea327 )**: eslint-plugin-react-hooks v1.0.0 //<Brian Vaughn>//
- **[bc9818f24](facebook/react@bc9818f24 )**: Scheduler.unstable_next (facebook#14756) //<Andrew Clark>//
- **[ce6ecd3fb](facebook/react@ce6ecd3fb )**: Add 16.8.0 changelog and update some READMEs (facebook#14692) //<Dan Abramov>//
- **[008a2ab9c](facebook/react@008a2ab9c )**: 16.8.0 //<Brian Vaughn>//
- **[d1326f466](facebook/react@d1326f466 )**: [TestUtils.act] fix return result checking  (facebook#14758) //<Sunil Pai>//
- **[267ed9814](facebook/react@267ed9814 )**: expose `TestUtils.act()` for batching actions in tests (facebook#14744) //<Sunil Pai>//
- **[fb3f7bfde](facebook/react@fb3f7bfde )**: Avoid importing Scheduler directly (facebook#14757) //<Andrew Clark>//
- **[e602b5291](facebook/react@e602b5291 )**: Use SameValue instead of === to check for dispatchAction equivalence (facebook#14752) //<Jessica Franco>//
- **[e489c3f9c](facebook/react@e489c3f9c )**: Update the version with Hooks proposal in README (facebook#14751) //<SToneX>//
- **[c21c41ecf](facebook/react@c21c41ecf )**: Tweak invalid Hook warning and error (facebook#14747) //<Dan Abramov>//
- **[fec00a869](facebook/react@fec00a869 )**: Typo in comment (facebook#14739) //<Deniz Susman>//
- **[66eb29374](facebook/react@66eb29374 )**: Restrict effect return type to a function or nothing (facebook#14119) //<Andrew Clark>//
- **[51c07912a](facebook/react@51c07912a )**: Warn when second argument is passed to useCallback (facebook#14729) //<Dan Abramov>//
- **[70d407583](facebook/react@70d407583 )**: Move Hook mismatch warning to first mismatch site (facebook#14720) //<Andrew Clark>//
- **[ba6477aa3](facebook/react@ba6477aa3 )**: Improve Reducer Hook's lazy init API (facebook#14723) //<Andrew Clark>//
- **[cb1ff430e](facebook/react@cb1ff430e )**: Phased dispatcher (facebook#14701) //<Andrew Clark>//
- **[9d483dcfd](facebook/react@9d483dcfd )**: Spelling abitrarily -> arbitrarily (facebook#14710) //<Peter Donald>//
- **[e19c9e106](facebook/react@e19c9e106 )**: Fix issue with multiple code branches in hooks linter (facebook#14661) //<Yurick>//
- **[f11a9c1cb](facebook/react@f11a9c1cb )**: State update bug in concurrent mode (facebook#14698) //<Brian Vaughn>//
- **[e679a4b6e](facebook/react@e679a4b6e )**: Fix typo in code comment (facebook#14696) //<Greg Hurrell>//
- **[8bcc88f2e](facebook/react@8bcc88f2e )**: Make all readContext() and Hook-in-a-Hook checks DEV-only (facebook#14677) //<Dan Abramov>//
- **[6cb26774e](facebook/react@6cb26774e )**: Enable hooks! (facebook#14679) //<Brian Vaughn>//
- **[73962c366](facebook/react@73962c366 )**: Revert "Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652)" (facebook#14654) //<Dan Abramov>//
- **[994439228](facebook/react@994439228 )**: Put DEV-only code into DEV blocks (facebook#14673) //<Dan Abramov>//
- **[f0befae65](facebook/react@f0befae65 )**: Tweak context invariant message (facebook#14671) //<Dan Abramov>//
- **[a129259ad](facebook/react@a129259ad )**: Disallow reading context during useMemo etc (facebook#14653) //<Dan Abramov>//
- **[c068d31cc](facebook/react@c068d31cc )**: Add unit tests for concurrent mode event dispatching (facebook#14415) //<Sebastian Markbåge>//
- **[38247cba3](facebook/react@38247cba3 )**: --save is no longer needed (facebook#14302) //<SamCortopassi>//
- **[3f0bcaf0d](facebook/react@3f0bcaf0d )**: Importing React for the first example. (facebook#14346) //<Ramón Chancay Ortega>//
- **[ecd919a2f](facebook/react@ecd919a2f )**: RFC: warn when returning different hooks on subsequent renders (facebook#14585) //<Sunil Pai>//
- **[3fbebb2a0](facebook/react@3fbebb2a0 )**: Revert "Double-render function components with Hooks in DEV in StrictMode" (facebook#14652) //<Dan Abramov>//
- **[5fce6488c](facebook/react@5fce6488c )**: Revert "Disallow reading context during useMemo etc" (facebook#14651) //<Dan Abramov>//
- **[fe2ecd276](facebook/react@fe2ecd276 )**: Add test coverage for readContext() on the server (facebook#14649) //<Dan Abramov>//
- **[8f45a7fdc](facebook/react@8f45a7fdc )**: Warn about incorrect use of useImperativeHandle() (facebook#14647) //<Dan Abramov>//
- **[1fcbd2243](facebook/react@1fcbd2243 )**: Disallow reading context during useMemo etc (facebook#14648) //<Dan Abramov>//
- **[2a084f51a](facebook/react@2a084f51a )**: Warn about refs on lazy function components (facebook#14645) //<Dan Abramov>//
- **[b5a3df6e8](facebook/react@b5a3df6e8 )**: Fix typo (facebook#14560) //<Linchengyi>//
- **[9c146e675](facebook/react@9c146e675 )**: fix typo (facebook#14316) //<liunian>//
- **[baa6d40fc](facebook/react@baa6d40fc )**: Mention forwardRef() in <Fn ref={...} /> errors and warnings (facebook#14644) //<Dan Abramov>//
- **[a1414e894](facebook/react@a1414e894 )**: Double-render function components with Hooks in DEV in StrictMode (facebook#14643) //<Dan Abramov>//
- **[10a7a5b5c](facebook/react@10a7a5b5c )**: Fix synchronous thenable rejection (facebook#14633) //<Dan Abramov>//
- **[a2fa6eb98](facebook/react@a2fa6eb98 )**: Move lazy._result assignment (facebook#14632) //<Dan Abramov>//
- **[9120f6c2d](facebook/react@9120f6c2d )**: Support sync thenables for lazy() (facebook#14626) //<Dan Abramov>//
- **[b66e6e41e](facebook/react@b66e6e41e )**: Add directory details to the package.json of all packages (facebook#14628) //<Grey Baker>//
- **[177fb7635](facebook/react@177fb7635 )**: Warn when second callback is passed to setState/dispatch in Hooks (facebook#14625) //<Dan Abramov>//
- **[d17d0b99c](facebook/react@d17d0b99c )**: Use public context.report interface in eslint rules (facebook#14623) //<Sebastian Silbermann>//
- **[4f332885a](facebook/react@4f332885a )**: Fix shallow renderer set instance state after gDSFP before calling sCU (facebook#14613) //<Yi-Shan, Chen>//
- **[e1cd83e49](facebook/react@e1cd83e49 )**: Throw an error when using hooks inside useMemo/useState/useReducer, or .memo's comparator (facebook#14608) //<Sunil Pai>//
- **[be457ca68](facebook/react@be457ca68 )**: Small tweaks to SSR to match facebook#14594 (facebook#14618) //<Dan Abramov>//
- **[17d70df91](facebook/react@17d70df91 )**: Warn when mixing createRoot() and old APIs (facebook#14615) //<Dan Abramov>//
- **[4feab7fc9](facebook/react@4feab7fc9 )**: Add hooks support to ReactShallowRenderer (facebook#14567) //<Dominic Gannaway>//
- **[1454a8be0](facebook/react@1454a8be0 )**: Don't bother comparing constructor when deps are not provided (facebook#14594) //<Andrew Clark>//
- **[71b64d521](facebook/react@71b64d521 )**: Warn if number of hooks increases (facebook#14591) //<Andrew Clark>//
- **[790c8ef04](facebook/react@790c8ef04 )**: Allow useReducer to bail out of rendering by returning previous state (facebook#14569) //<Andrew Clark>//
- **[7ab8a8e97](facebook/react@7ab8a8e97 )**: Added Flow type to keep hooks dispatchers in-sync (facebook#14599) //<Brian Vaughn>//
- **[4392e3821](facebook/react@4392e3821 )**: useDebugValue should throw if used in a class component (facebook#14601) //<Brian Vaughn>//
- **[153a0b598](facebook/react@153a0b598 )**: Add noop useDebugValue hook to partial/server renderer (facebook#14597) //<Brian Vaughn>//
- **[7ad9806d1](facebook/react@7ad9806d1 )**: Tweak to avoid property read (facebook#14593) //<Brandon Dail>//
- **[0fc154751](facebook/react@0fc154751 )**: Avoid new Set([iterable]) for thenables (facebook#14592) //<Brandon Dail>//
- **[edb1f5956](facebook/react@edb1f5956 )**: Support configurable labels for custom hooks (facebook#14559) //<Brian Vaughn>//
- **[3e15b1c69](facebook/react@3e15b1c69 )**: make a fork for ReactCurrentDispatcher (facebook#14588) //<Sunil Pai>//
- **[0005d1e3f](facebook/react@0005d1e3f )**: Fix typo (facebook#14576) //<Carl Mungazi>//
- **[f290138d3](facebook/react@f290138d3 )**: react-debug-tools accepts currentDispatcher ref as param (facebook#14556) //<Brian Vaughn>//
- **[b4ad8e947](facebook/react@b4ad8e947 )**: rename useImperativeMethods -> useImperativeHandle (facebook#14565) //<Sunil Pai>//
- **[ab03e3d65](facebook/react@ab03e3d65 )**: Inject ReactCurrentDispatcher ref to DevTools (facebook#14550) //<Brian Vaughn>//
- **[19ef0ec11](facebook/react@19ef0ec11 )**: Separate current owner and dispatcher (facebook#14548) //<Brian Vaughn>//
- **[a9b035b0c](facebook/react@a9b035b0c )**: Separate Object.is polyfill (facebook#14334) //<Maksim Markelov>//
- **[547e059f0](facebook/react@547e059f0 )**: Simplify wording of key warning (facebook#14503) //<Sophie Alpert>//
- **[3494ee57e](facebook/react@3494ee57e )**: Update ReactUpdateQueue.js (facebook#14521) //<Carl Mungazi>//
- **[659c13963](facebook/react@659c13963 )**: Update ReactFiberScheduler.js (facebook#14477) //<Carl Mungazi>//
- **[c695b2384](facebook/react@c695b2384 )**: React v16.7.0 //<Andrew Clark>//
- **[1c5aa2f23](facebook/react@1c5aa2f23 )**: Move SchedulerFeatureFlags fork to src directory to fix lint //<Andrew Clark>//
- **[653bc582f](facebook/react@653bc582f )**: Create separate SchedulerFeatureFlags instead of using ReactFeatureFlags (facebook#14455) //<Andrew Clark>//
- **[8bfef0da5](facebook/react@8bfef0da5 )**: Make scheduler debugging feature flag static //<Andrew Clark>//
- **[4a1072194](facebook/react@4a1072194 )**: Memoize promise listeners to prevent exponential growth (facebook#14429) //<Andrew Clark>//
- **[535804f5c](facebook/react@535804f5c )**: Removed Fabric-specific feature flag files and updated Rollup to use the (non-Fabric) React Native flag files. (facebook#14437) //<Brian Vaughn>//
- **[2743fb7b2](facebook/react@2743fb7b2 )**: Enable hooks by default for FB React Native renderer (facebook#14435) //<Brian Vaughn>//
- **[7325ebe4d](facebook/react@7325ebe4d )**: Inject overrideProps() fn to DevTools (facebook#14427) //<Brian Vaughn>//
- **[a22880e5e](facebook/react@a22880e5e )**: Add support for Suspense & lazy() to the react-is package (facebook#14423) //<Pleun Vanderbauwhede>//
- **[947bddd5c](facebook/react@947bddd5c )**: Remove redundant argument of getPlugins function (facebook#14419) //<Heaven>//
- **[8df4d59be](facebook/react@8df4d59be )**: Implement pauseExecution, continueExecution, dumpQueue for Scheduler (facebook#14053) //<Kevin Chavez>//
- **[5bb4ad737](facebook/react@5bb4ad737 )**: Added ErrorBoundary tests for useEffect and useLayoutEffect (facebook#14401) //<Brian Vaughn>//
- **[98eb5ae53](facebook/react@98eb5ae53 )**: TestRenderer toJSON should not expose the Array wrapper Suspense uses for hidden trees (facebook#14392) //<Brian Vaughn>//
- **[39489e767](facebook/react@39489e767 )**: Enable hooks in fabric (facebook#14301) //<Spencer Ahrens>//
- **[1dc108e58](facebook/react@1dc108e58 )**: Tweaked wording for v8 "performance cliff" issue //<Brian Vaughn>//

Release Notes:
[GENERAL] [Changed] - React sync for revisions 6bf5e85...aa94237 (React 16.8.1)

Pull Request resolved: facebook#23320

Differential Revision: D13976467

fbshipit-source-id: 9e11552268883db8672d11cf489d3a5949f498b7
facebook-github-bot pushed a commit that referenced this pull request Feb 8, 2019
Summary:
allow-large-files

This sync includes the following changes:
- **[45fc46bfa](facebook/react@45fc46bfa )**: 16.8.1 packages //<Brian Vaughn>//
- **[f2e2637c8](facebook/react@f2e2637c8 )**: Backwards compat fix for ReactCurrentDispatcher on older react versions (#14770) //<Brian Vaughn>//
- **[1107b9673](facebook/react@1107b9673 )**: [TestUtils.act] warn when using TestUtils.act in node (#14768) //<Sunil Pai>//
- **[0975ea327](facebook/react@0975ea327 )**: eslint-plugin-react-hooks v1.0.0 //<Brian Vaughn>//
- **[bc9818f24](facebook/react@bc9818f24 )**: Scheduler.unstable_next (#14756) //<Andrew Clark>//
- **[ce6ecd3fb](facebook/react@ce6ecd3fb )**: Add 16.8.0 changelog and update some READMEs (#14692) //<Dan Abramov>//
- **[008a2ab9c](facebook/react@008a2ab9c )**: 16.8.0 //<Brian Vaughn>//
- **[d1326f466](facebook/react@d1326f466 )**: [TestUtils.act] fix return result checking  (#14758) //<Sunil Pai>//
- **[267ed9814](facebook/react@267ed9814 )**: expose `TestUtils.act()` for batching actions in tests (#14744) //<Sunil Pai>//
- **[fb3f7bfde](facebook/react@fb3f7bfde )**: Avoid importing Scheduler directly (#14757) //<Andrew Clark>//
- **[e602b5291](facebook/react@e602b5291 )**: Use SameValue instead of === to check for dispatchAction equivalence (#14752) //<Jessica Franco>//
- **[e489c3f9c](facebook/react@e489c3f9c )**: Update the version with Hooks proposal in README (#14751) //<SToneX>//
- **[c21c41ecf](facebook/react@c21c41ecf )**: Tweak invalid Hook warning and error (#14747) //<Dan Abramov>//
- **[fec00a869](facebook/react@fec00a869 )**: Typo in comment (#14739) //<Deniz Susman>//
- **[66eb29374](facebook/react@66eb29374 )**: Restrict effect return type to a function or nothing (#14119) //<Andrew Clark>//
- **[51c07912a](facebook/react@51c07912a )**: Warn when second argument is passed to useCallback (#14729) //<Dan Abramov>//
- **[70d407583](facebook/react@70d407583 )**: Move Hook mismatch warning to first mismatch site (#14720) //<Andrew Clark>//
- **[ba6477aa3](facebook/react@ba6477aa3 )**: Improve Reducer Hook's lazy init API (#14723) //<Andrew Clark>//
- **[cb1ff430e](facebook/react@cb1ff430e )**: Phased dispatcher (#14701) //<Andrew Clark>//
- **[9d483dcfd](facebook/react@9d483dcfd )**: Spelling abitrarily -> arbitrarily (#14710) //<Peter Donald>//
- **[e19c9e106](facebook/react@e19c9e106 )**: Fix issue with multiple code branches in hooks linter (#14661) //<Yurick>//
- **[f11a9c1cb](facebook/react@f11a9c1cb )**: State update bug in concurrent mode (#14698) //<Brian Vaughn>//
- **[e679a4b6e](facebook/react@e679a4b6e )**: Fix typo in code comment (#14696) //<Greg Hurrell>//
- **[8bcc88f2e](facebook/react@8bcc88f2e )**: Make all readContext() and Hook-in-a-Hook checks DEV-only (#14677) //<Dan Abramov>//
- **[6cb26774e](facebook/react@6cb26774e )**: Enable hooks! (#14679) //<Brian Vaughn>//
- **[73962c366](facebook/react@73962c366 )**: Revert "Revert "Double-render function components with Hooks in DEV in StrictMode" (#14652)" (#14654) //<Dan Abramov>//
- **[994439228](facebook/react@994439228 )**: Put DEV-only code into DEV blocks (#14673) //<Dan Abramov>//
- **[f0befae65](facebook/react@f0befae65 )**: Tweak context invariant message (#14671) //<Dan Abramov>//
- **[a129259ad](facebook/react@a129259ad )**: Disallow reading context during useMemo etc (#14653) //<Dan Abramov>//
- **[c068d31cc](facebook/react@c068d31cc )**: Add unit tests for concurrent mode event dispatching (#14415) //<Sebastian Markbåge>//
- **[38247cba3](facebook/react@38247cba3 )**: --save is no longer needed (#14302) //<SamCortopassi>//
- **[3f0bcaf0d](facebook/react@3f0bcaf0d )**: Importing React for the first example. (#14346) //<Ramón Chancay Ortega>//
- **[ecd919a2f](facebook/react@ecd919a2f )**: RFC: warn when returning different hooks on subsequent renders (#14585) //<Sunil Pai>//
- **[3fbebb2a0](facebook/react@3fbebb2a0 )**: Revert "Double-render function components with Hooks in DEV in StrictMode" (#14652) //<Dan Abramov>//
- **[5fce6488c](facebook/react@5fce6488c )**: Revert "Disallow reading context during useMemo etc" (#14651) //<Dan Abramov>//
- **[fe2ecd276](facebook/react@fe2ecd276 )**: Add test coverage for readContext() on the server (#14649) //<Dan Abramov>//
- **[8f45a7fdc](facebook/react@8f45a7fdc )**: Warn about incorrect use of useImperativeHandle() (#14647) //<Dan Abramov>//
- **[1fcbd2243](facebook/react@1fcbd2243 )**: Disallow reading context during useMemo etc (#14648) //<Dan Abramov>//
- **[2a084f51a](facebook/react@2a084f51a )**: Warn about refs on lazy function components (#14645) //<Dan Abramov>//
- **[b5a3df6e8](facebook/react@b5a3df6e8 )**: Fix typo (#14560) //<Linchengyi>//
- **[9c146e675](facebook/react@9c146e675 )**: fix typo (#14316) //<liunian>//
- **[baa6d40fc](facebook/react@baa6d40fc )**: Mention forwardRef() in <Fn ref={...} /> errors and warnings (#14644) //<Dan Abramov>//
- **[a1414e894](facebook/react@a1414e894 )**: Double-render function components with Hooks in DEV in StrictMode (#14643) //<Dan Abramov>//
- **[10a7a5b5c](facebook/react@10a7a5b5c )**: Fix synchronous thenable rejection (#14633) //<Dan Abramov>//
- **[a2fa6eb98](facebook/react@a2fa6eb98 )**: Move lazy._result assignment (#14632) //<Dan Abramov>//
- **[9120f6c2d](facebook/react@9120f6c2d )**: Support sync thenables for lazy() (#14626) //<Dan Abramov>//
- **[b66e6e41e](facebook/react@b66e6e41e )**: Add directory details to the package.json of all packages (#14628) //<Grey Baker>//
- **[177fb7635](facebook/react@177fb7635 )**: Warn when second callback is passed to setState/dispatch in Hooks (#14625) //<Dan Abramov>//
- **[d17d0b99c](facebook/react@d17d0b99c )**: Use public context.report interface in eslint rules (#14623) //<Sebastian Silbermann>//
- **[4f332885a](facebook/react@4f332885a )**: Fix shallow renderer set instance state after gDSFP before calling sCU (#14613) //<Yi-Shan, Chen>//
- **[e1cd83e49](facebook/react@e1cd83e49 )**: Throw an error when using hooks inside useMemo/useState/useReducer, or .memo's comparator (#14608) //<Sunil Pai>//
- **[be457ca68](facebook/react@be457ca68 )**: Small tweaks to SSR to match #14594 (#14618) //<Dan Abramov>//
- **[17d70df91](facebook/react@17d70df91 )**: Warn when mixing createRoot() and old APIs (#14615) //<Dan Abramov>//
- **[4feab7fc9](facebook/react@4feab7fc9 )**: Add hooks support to ReactShallowRenderer (#14567) //<Dominic Gannaway>//
- **[1454a8be0](facebook/react@1454a8be0 )**: Don't bother comparing constructor when deps are not provided (#14594) //<Andrew Clark>//
- **[71b64d521](facebook/react@71b64d521 )**: Warn if number of hooks increases (#14591) //<Andrew Clark>//
- **[790c8ef04](facebook/react@790c8ef04 )**: Allow useReducer to bail out of rendering by returning previous state (#14569) //<Andrew Clark>//
- **[7ab8a8e97](facebook/react@7ab8a8e97 )**: Added Flow type to keep hooks dispatchers in-sync (#14599) //<Brian Vaughn>//
- **[4392e3821](facebook/react@4392e3821 )**: useDebugValue should throw if used in a class component (#14601) //<Brian Vaughn>//
- **[153a0b598](facebook/react@153a0b598 )**: Add noop useDebugValue hook to partial/server renderer (#14597) //<Brian Vaughn>//
- **[7ad9806d1](facebook/react@7ad9806d1 )**: Tweak to avoid property read (#14593) //<Brandon Dail>//
- **[0fc154751](facebook/react@0fc154751 )**: Avoid new Set([iterable]) for thenables (#14592) //<Brandon Dail>//
- **[edb1f5956](facebook/react@edb1f5956 )**: Support configurable labels for custom hooks (#14559) //<Brian Vaughn>//
- **[3e15b1c69](facebook/react@3e15b1c69 )**: make a fork for ReactCurrentDispatcher (#14588) //<Sunil Pai>//
- **[0005d1e3f](facebook/react@0005d1e3f )**: Fix typo (#14576) //<Carl Mungazi>//
- **[f290138d3](facebook/react@f290138d3 )**: react-debug-tools accepts currentDispatcher ref as param (#14556) //<Brian Vaughn>//
- **[b4ad8e947](facebook/react@b4ad8e947 )**: rename useImperativeMethods -> useImperativeHandle (#14565) //<Sunil Pai>//
- **[ab03e3d65](facebook/react@ab03e3d65 )**: Inject ReactCurrentDispatcher ref to DevTools (#14550) //<Brian Vaughn>//
- **[19ef0ec11](facebook/react@19ef0ec11 )**: Separate current owner and dispatcher (#14548) //<Brian Vaughn>//
- **[a9b035b0c](facebook/react@a9b035b0c )**: Separate Object.is polyfill (#14334) //<Maksim Markelov>//
- **[547e059f0](facebook/react@547e059f0 )**: Simplify wording of key warning (#14503) //<Sophie Alpert>//
- **[3494ee57e](facebook/react@3494ee57e )**: Update ReactUpdateQueue.js (#14521) //<Carl Mungazi>//
- **[659c13963](facebook/react@659c13963 )**: Update ReactFiberScheduler.js (#14477) //<Carl Mungazi>//
- **[c695b2384](facebook/react@c695b2384 )**: React v16.7.0 //<Andrew Clark>//
- **[1c5aa2f23](facebook/react@1c5aa2f23 )**: Move SchedulerFeatureFlags fork to src directory to fix lint //<Andrew Clark>//
- **[653bc582f](facebook/react@653bc582f )**: Create separate SchedulerFeatureFlags instead of using ReactFeatureFlags (#14455) //<Andrew Clark>//
- **[8bfef0da5](facebook/react@8bfef0da5 )**: Make scheduler debugging feature flag static //<Andrew Clark>//
- **[4a1072194](facebook/react@4a1072194 )**: Memoize promise listeners to prevent exponential growth (#14429) //<Andrew Clark>//
- **[535804f5c](facebook/react@535804f5c )**: Removed Fabric-specific feature flag files and updated Rollup to use the (non-Fabric) React Native flag files. (#14437) //<Brian Vaughn>//
- **[2743fb7b2](facebook/react@2743fb7b2 )**: Enable hooks by default for FB React Native renderer (#14435) //<Brian Vaughn>//
- **[7325ebe4d](facebook/react@7325ebe4d )**: Inject overrideProps() fn to DevTools (#14427) //<Brian Vaughn>//
- **[a22880e5e](facebook/react@a22880e5e )**: Add support for Suspense & lazy() to the react-is package (#14423) //<Pleun Vanderbauwhede>//
- **[947bddd5c](facebook/react@947bddd5c )**: Remove redundant argument of getPlugins function (#14419) //<Heaven>//
- **[8df4d59be](facebook/react@8df4d59be )**: Implement pauseExecution, continueExecution, dumpQueue for Scheduler (#14053) //<Kevin Chavez>//
- **[5bb4ad737](facebook/react@5bb4ad737 )**: Added ErrorBoundary tests for useEffect and useLayoutEffect (#14401) //<Brian Vaughn>//
- **[98eb5ae53](facebook/react@98eb5ae53 )**: TestRenderer toJSON should not expose the Array wrapper Suspense uses for hidden trees (#14392) //<Brian Vaughn>//
- **[39489e767](facebook/react@39489e767 )**: Enable hooks in fabric (#14301) //<Spencer Ahrens>//
- **[1dc108e58](facebook/react@1dc108e58 )**: Tweaked wording for v8 "performance cliff" issue //<Brian Vaughn>//

Release Notes:
[GENERAL] [Changed] - React sync for revisions 6bf5e85...aa94237 (React 16.8.1)

Pull Request resolved: #23320

Reviewed By: rickhanlonii

Differential Revision: D13976467

fbshipit-source-id: 4ce198e86a54658e1c35aa36bffe4a7dc2956a2e
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