Summary:
A blog post with notes from the second React Native monthly meeting. I've gathered notes after the meeting in this blog post.

No test plan, submitting just a documentation file.

[DOCS] [ENHANCEMENT] [blog/2017-11-06-react-native-monthly-5.md] - Submitting notes from React Native monthly #5.

cc hramos
Closes facebook#16694

Differential Revision: D6259640

Pulled By: hramos

fbshipit-source-id: 328ab6018300bef91bdc8561ac8cbd64d3d93129

Summary:
Previous iterations of this diff that were reverted: D30678341 (facebook@8009459), D30868627 (facebook@abd0f38),
D31024459 (facebook@0a46e5e), D31147242 (facebook@92c1bee).

With the power of selects, we can move the base AppleTVOS flags into the regular
base Apple flags.

Changelog: [Internal]

skip-frl-buck-targeting

Reviewed By: mzlee

Differential Revision: D31216242

fbshipit-source-id: 93ee2afda41af06fe210ba6a4a5459a438d6c3f8

…tion for existing view (facebook#51294)

Summary:
Pull Request resolved: facebook#51294

changelog: [internal]

Fix a crash where a node that is supposed to be culled doesn't get visited because culling context is not updated.
The differentiator would generate a create instruction for a view that already exists.

Stack trace for the crash:
```
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
  * frame #0: 0x0000000111740874 libsystem_kernel.dylib`__pthread_kill + 8
    frame #1: 0x00000001117aa2ec libsystem_pthread.dylib`pthread_kill + 264
    frame #2: 0x0000000180171ea8 libsystem_c.dylib`abort + 100
    frame #3: 0x00000001802b0144 libc++abi.dylib`abort_message + 128
    frame #4: 0x000000018029fe4c libc++abi.dylib`demangling_terminate_handler() + 296
    frame #5: 0x000000018006f220 libobjc.A.dylib`_objc_terminate() + 124
    frame #6: 0x00000001375d1964 INFRAFramework`meta_terminate() + 5468
    frame #7: 0x00000001802af570 libc++abi.dylib`std::__terminate(void (*)()) + 12
    frame #8: 0x00000001802b2498 libc++abi.dylib`__cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 32
    frame #9: 0x00000001802b2478 libc++abi.dylib`__cxa_throw + 88
    frame #10: 0x0000000180093904 libobjc.A.dylib`objc_exception_throw + 384
    frame #11: 0x0000000180e6999c Foundation`-[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] + 268
    frame #12: 0x000000031a3bcfc8 XPLAT_6_Framework`-[RCTComponentViewRegistry dequeueComponentViewWithComponentHandle:tag:] + 528
    frame #13: 0x000000031a3ccdec XPLAT_6_Framework`RCTPerformMountInstructions(std::__1::vector<facebook::react::ShadowViewMutation, std::__1::allocator<facebook::react::ShadowViewMutation>> const&, RCTComponentViewRegistry*, RCTMountingTransactionObserverCoordinator&, int) + 356
    frame #14: 0x000000031a3ccc7c XPLAT_6_Framework`-[RCTMountingManager performTransaction:]::$_1::operator()(facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) const + 80
    frame #15: 0x000000031a3ccc20 XPLAT_6_Framework`decltype(std::declval<-[RCTMountingManager performTransaction:]::$_1&>()(std::declval<facebook::react::MountingTransaction const&>(), std::declval<facebook::react::SurfaceTelemetry const&>())) std::__1::__invoke[abi:ne190102]<-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&>(-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 40
    frame #16: 0x000000031a3ccbc8 XPLAT_6_Framework`void std::__1::__invoke_void_return_wrapper<void, true>::__call[abi:ne190102]<-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&>(-[RCTMountingManager performTransaction:]::$_1&, facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 40
    frame #17: 0x000000031a3ccb94 XPLAT_6_Framework`std::__1::__function::__alloc_func<-[RCTMountingManager performTransaction:]::$_1, std::__1::allocator<-[RCTMountingManager performTransaction:]::$_1>, void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()[abi:ne190102](facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 44
    frame #18: 0x000000031a3cba1c XPLAT_6_Framework`std::__1::__function::__func<-[RCTMountingManager performTransaction:]::$_1, std::__1::allocator<-[RCTMountingManager performTransaction:]::$_1>, void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()(facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&) + 44
    frame #20: 0x000000032f219804 XPLAT_1_Framework`std::__1::function<void (facebook::react::MountingTransaction const&, facebook::react::SurfaceTelemetry const&)>::operator()(this=0x000000016d4f0c78, __arg=0x000000016d4f0a10, __arg=0x000000016d4f0978) const at function.h:989:10
    frame #21: 0x000000032f219668 XPLAT_1_Framework`facebook::react::TelemetryController::pullTransaction(this=0x00000003f4680f00, willMount=0x000000016d4f0c98, doMount=0x000000016d4f0c78, didMount=0x000000016d4f0c58) const at TelemetryController.cpp:39:3
    frame #22: 0x000000031a3c5b28 XPLAT_6_Framework`-[RCTMountingManager performTransaction:] + 544
    frame #23: 0x000000031a3c5864 XPLAT_6_Framework`-[RCTMountingManager initiateTransaction:] + 456
    frame #24: 0x000000031a3c5240 XPLAT_6_Framework`__42-[RCTMountingManager scheduleTransaction:]_block_invoke + 308
    frame #25: 0x0000000131f81b84 BOTTOMFramework`__RCTExecuteOnMainQueue_block_invoke + 40
    frame #26: 0x000000018017c788 libdispatch.dylib`_dispatch_call_block_and_release + 24
    frame #27: 0x0000000180197278 libdispatch.dylib`_dispatch_client_callout + 12
    frame #28: 0x00000001801b2fcc libdispatch.dylib`_dispatch_main_queue_drain.cold.7 + 24
    frame #29: 0x000000018018c1c4 libdispatch.dylib`_dispatch_main_queue_drain + 1184
    frame #30: 0x000000018018bd14 libdispatch.dylib`_dispatch_main_queue_callback_4CF + 40
    frame #31: 0x0000000180427fec CoreFoundation`__CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
    frame #32: 0x00000001804229f8 CoreFoundation`__CFRunLoopRun + 1920
    frame #33: 0x0000000180421e3c CoreFoundation`CFRunLoopRunSpecific + 536
    frame #34: 0x0000000190f62d00 GraphicsServices`GSEventRunModal + 164
    frame #35: 0x0000000185bcec98 UIKitCore`-[UIApplication _run] + 796
    frame #36: 0x0000000185bd3064 UIKitCore`UIApplicationMain + 124
    frame #37: 0x0000000115fbf0bc PRODUCTFramework`main + 200
    frame #38: 0x00000001114293d8 dyld_sim`start_sim + 20
    frame #39: 0x0000000111506b4c dyld`start + 6000
```

Reviewed By: rubennorte

Differential Revision: D74654157

fbshipit-source-id: 9181bcd28524c71d0ca4620bd630dc0baa172386