react-native: Tons of errors in flow after upgrade to latest RC

Review the documentation: https://facebook.github.io/react-native
Search for existing issues: https://github.com/facebook/react-native/issues
Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment


  React Native Environment Info:
    System:
      OS: macOS High Sierra 10.13.4
      CPU: x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
      Memory: 27.08 MB / 16.00 GB
      Shell: 3.2.57 - /bin/bash
    Binaries:
      Node: 9.11.1 - ~/.nvs/default/bin/node
      Yarn: 1.6.0 - ~/.nvs/default/bin/yarn
      npm: 5.8.0 - ~/.nvs/default/bin/npm
      Watchman: 4.9.0 - /usr/local/bin/watchman
    SDKs:
      iOS SDK:
        Platforms: iOS 11.1, macOS 10.13, tvOS 11.1, watchOS 4.1
      Android SDK:
        Build Tools: 23.0.1, 25.0.3, 26.0.2, 26.0.3, 27.0.3
        API Levels: 23, 24, 25, 26, 27
    IDEs:
      Android Studio: 3.0 AI-171.4443003
      Xcode: 9.1/9B55 - /usr/bin/xcodebuild
    npmPackages:
      react: 16.3.2 => 16.3.2
      react-native: ^0.56.0-rc.2 => 0.56.0-rc.2
    npmGlobalPackages:
      react-native-git-upgrade: 0.2.7

Description

Tons of flow errors about being unable to find stuff like StatusBar, View, Text, etc.

Error --------------------------- node_modules/react-native/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js:13:30

Cannot resolve module `EventEmitter`.

   13| const EventEmitter = require('EventEmitter');
                                    ^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/EventEmitter/__mocks__/NativeEventEmitter.js:14:39

Cannot resolve module `RCTDeviceEventEmitter`.

   14| const RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
                                             ^^^^^^^^^^^^^^^^^^^^^^^


Error ------------------------------------------ node_modules/react-native/Libraries/StyleSheet/StyleSheetTypes.js:13:30

Cannot resolve module `AnimatedNode`.

   13| const AnimatedNode = require('AnimatedNode');
                                    ^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:19:20

Cannot resolve module `AccessibilityInfo`.

   19|     return require('AccessibilityInfo');
                          ^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:22:20

Cannot resolve module `ActivityIndicator`.

   22|     return require('ActivityIndicator');
                          ^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:25:20

Cannot resolve module `ReactNativeART`.

   25|     return require('ReactNativeART');
                          ^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:28:20

Cannot resolve module `Button`.

   28|     return require('Button');
                          ^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:31:20

Cannot resolve module `CheckBox`.

   31|     return require('CheckBox');
                          ^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:34:20

Cannot resolve module `DatePickerIOS`.

   34|     return require('DatePickerIOS');
                          ^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:37:20

Cannot resolve module `DrawerLayoutAndroid`.

   37|     return require('DrawerLayoutAndroid');
                          ^^^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:40:20

Cannot resolve module `FlatList`.

   40|     return require('FlatList');
                          ^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:43:20

Cannot resolve module `Image`.

   43|     return require('Image');
                          ^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:46:20

Cannot resolve module `ImageBackground`.

   46|     return require('ImageBackground');
                          ^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:49:20

Cannot resolve module `ImageEditor`.

   49|     return require('ImageEditor');
                          ^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:52:20

Cannot resolve module `ImageStore`.

   52|     return require('ImageStore');
                          ^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:55:20

Cannot resolve module `InputAccessoryView`.

   55|     return require('InputAccessoryView');
                          ^^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:58:20

Cannot resolve module `KeyboardAvoidingView`.

   58|     return require('KeyboardAvoidingView');
                          ^^^^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:61:20

Cannot resolve module `ListView`.

   61|     return require('ListView');
                          ^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:64:20

Cannot resolve module `MaskedViewIOS`.

   64|     return require('MaskedViewIOS');
                          ^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:67:20

Cannot resolve module `Modal`.

   67|     return require('Modal');
                          ^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:70:20

Cannot resolve module `NavigatorIOS`.

   70|     return require('NavigatorIOS');
                          ^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:73:20

Cannot resolve module `Picker`.

   73|     return require('Picker');
                          ^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:76:20

Cannot resolve module `PickerIOS`.

   76|     return require('PickerIOS');
                          ^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:79:20

Cannot resolve module `ProgressBarAndroid`.

   79|     return require('ProgressBarAndroid');
                          ^^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:82:20

Cannot resolve module `ProgressViewIOS`.

   82|     return require('ProgressViewIOS');
                          ^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:85:20

Cannot resolve module `SafeAreaView`.

   85|     return require('SafeAreaView');
                          ^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:88:20

Cannot resolve module `ScrollView`.

   88|     return require('ScrollView');
                          ^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:91:20

Cannot resolve module `SectionList`.

   91|     return require('SectionList');
                          ^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:94:20

Cannot resolve module `SegmentedControlIOS`.

   94|     return require('SegmentedControlIOS');
                          ^^^^^^^^^^^^^^^^^^^^^


Error ---------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:97:20

Cannot resolve module `Slider`.

   97|     return require('Slider');
                          ^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:100:20

Cannot resolve module `SnapshotViewIOS`.

   100|     return require('SnapshotViewIOS');
                           ^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:103:20

Cannot resolve module `Switch`.

   103|     return require('Switch');
                           ^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:106:20

Cannot resolve module `RefreshControl`.

   106|     return require('RefreshControl');
                           ^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:109:20

Cannot resolve module `StatusBar`.

   109|     return require('StatusBar');
                           ^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:112:20

Cannot resolve module `SwipeableFlatList`.

   112|     return require('SwipeableFlatList');
                           ^^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:115:20

Cannot resolve module `SwipeableListView`.

   115|     return require('SwipeableListView');
                           ^^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:118:20

Cannot resolve module `TabBarIOS`.

   118|     return require('TabBarIOS');
                           ^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:121:20

Cannot resolve module `Text`.

   121|     return require('Text');
                           ^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:124:20

Cannot resolve module `TextInput`.

   124|     return require('TextInput');
                           ^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:127:20

Cannot resolve module `ToastAndroid`.

   127|     return require('ToastAndroid');
                           ^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:130:20

Cannot resolve module `ToolbarAndroid`.

   130|     return require('ToolbarAndroid');
                           ^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:133:20

Cannot resolve module `Touchable`.

   133|     return require('Touchable');
                           ^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:136:20

Cannot resolve module `TouchableHighlight`.

   136|     return require('TouchableHighlight');
                           ^^^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:139:20

Cannot resolve module `TouchableNativeFeedback`.

   139|     return require('TouchableNativeFeedback');
                           ^^^^^^^^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:142:20

Cannot resolve module `TouchableOpacity`.

   142|     return require('TouchableOpacity');
                           ^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:145:20

Cannot resolve module `TouchableWithoutFeedback`.

   145|     return require('TouchableWithoutFeedback');
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:148:20

Cannot resolve module `View`.

   148|     return require('View');
                           ^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:151:20

Cannot resolve module `ViewPagerAndroid`.

   151|     return require('ViewPagerAndroid');
                           ^^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:154:20

Cannot resolve module `VirtualizedList`.

   154|     return require('VirtualizedList');
                           ^^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:157:20

Cannot resolve module `WebView`.

   157|     return require('WebView');
                           ^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:162:20

Cannot resolve module `ActionSheetIOS`.

   162|     return require('ActionSheetIOS');
                           ^^^^^^^^^^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:165:20

Cannot resolve module `Alert`.

   165|     return require('Alert');
                           ^^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:168:20



Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:121:20

Cannot resolve module `Text`.

   121|     return require('Text');
                           ^^^^^^


Error --------------------------- node_modules/react-native/Libraries/react-native/react-native-implementation.js:124:20

Cannot resolve module `TextInput`.

   124|     return require('TextInput');
                           ^^^^^^^^^^^

My .flowconfig:

[ignore]
<PROJECT_ROOT>/ios/.*
<PROJECT_ROOT>/android/.*
<PROJECT_ROOT>/build/.*
<PROJECT_ROOT>/config/.*
.*bower.json
.*/node_modules/.*/test/.*
.*/node_modules/editions/.*
.*/node_modules/react-native-firebase/.*
.*/node_modules/react-native-gesture-responder/.*
.*/node_modules/react-native-keyboard-aware-scroll-view/.*

; We fork some components by platform
.*/*[.]android.js

; Ignore "BUCK" generated dirs
<PROJECT_ROOT>/\.buckd/

; Ignore unexpected extra "@providesModule"
.*/node_modules/.*/node_modules/fbjs/.*

; Ignore duplicate module providers
; For RN Apps installed via npm, "Libraries" folder is inside
; "node_modules/react-native" but in the source repo it is in the root
.*/Libraries/react-native/React.js

; Ignore polyfills
.*/Libraries/polyfills/.*

; Ignore metro
.*/node_modules/metro/.*

[include]

[libs]
node_modules/react-native/Libraries/react-native/react-native-interface.js
node_modules/react-native/flow/
node_modules/react-native/flow-github/

[options]
suppress_comment=\\(.\\|\n\\)*@FlowIgnore
module.ignore_non_literal_requires=true
module.system.node.resolve_dirname=node_modules
module.system.node.resolve_dirname=./src

emoji=true

module.system=haste
module.system.haste.use_name_reducers=true
# keep the following in sync with server/haste/hasteImpl.js
# get basename
module.system.haste.name_reducers='^.*/\([a-zA-Z0-9$_.-]+\.js\(\.flow\)?\)$' -> '\1'
# strip .js or .js.flow suffix
module.system.haste.name_reducers='^\(.*\)\.js\(\.flow\)?$' -> '\1'
# strip .ios suffix
module.system.haste.name_reducers='^\(.*\)\.ios$' -> '\1'
module.system.haste.name_reducers='^\(.*\)\.android$' -> '\1'
module.system.haste.name_reducers='^\(.*\)\.native$' -> '\1'
module.system.haste.paths.blacklist=.*/__tests__/.*
module.system.haste.paths.blacklist=.*/__mocks__/.*
module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/Animated/src/polyfills/.*
module.system.haste.paths.whitelist=<PROJECT_ROOT>/Libraries/.*
module.system.haste.paths.whitelist=<PROJECT_ROOT>/RNTester/.*
module.system.haste.paths.whitelist=<PROJECT_ROOT>/IntegrationTests/.*
module.system.haste.paths.blacklist=<PROJECT_ROOT>/Libraries/Animated/src/polyfills/.*

munge_underscores=true

module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'

module.file_ext=.js
module.file_ext=.jsx
module.file_ext=.json
module.file_ext=.native.js

suppress_type=$FlowIssue
suppress_type=$FlowFixMe
suppress_type=$FlowFixMeProps
suppress_type=$FlowFixMeState

suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError

[version]
^0.74.0

I also tried with the .flowconfig from master and no dice.

About this issue

Original URL
State: closed
Created 6 years ago
Comments: 16 (2 by maintainers)

Most upvoted comments

@EvHaus ignoring this leads to suppressing these errors, however after that Flow can’t resolve react-native module.

loginov-rocks on Sep 3, 2018

Lucky You! 😃 I had to specify the following in my [untyped] section:

[untyped]
.*/node_modules/react-native/Libraries/react-native/react-native-implementation.js
.*/node_modules/react-native/Libraries/Utilities/differ/pointsDiffer.js
.*/node_modules/react-native/Libraries/Vibration/Vibration.js
.*/node_modules/react-native/Libraries/YellowBox/UI/YellowBoxInspectorHeader.js
.*/node_modules/react-native/Libraries/Utilities/Dimensions.js
.*/node_modules/react-native/Libraries/Utilities/deepFreezeAndThrowOnMutationInDev.j
.*/node_modules/react-native/Libraries/Utilities/differ/insetsDiffer.js
.*/node_modules/react-native/Libraries/Lists/VirtualizedList.js
.*/node_modules/react-native/Libraries/Alert/Alert.js
.*/node_modules/react-native/Libraries/Animated/src/Animated.js
.*/node_modules/react-native/Libraries/Animated/src/AnimatedEvent.js
.*/node_modules/react-native/Libraries/Animated/src/AnimatedImplementation.js
.*/node_modules/react-native/Libraries/Animated/src/Easing.js
.*/node_modules/react-native/Libraries/Animated/src/bezier.js
.*/node_modules/react-native/Libraries/Animated/src/nodes/AnimatedProps.js
.*/node_modules/react-native/Libraries/Components/RefreshControl/RefreshControl.js
.*/node_modules/react-native/Libraries/Components/ScrollView/ScrollView.js
.*/node_modules/react-native/Libraries/Linking/Linking.js
.*/node_modules/react-native/Libraries/Lists/ListView/ListView.js
.*/node_modules/react-native/Libraries/Lists/MetroListView.js
.*/node_modules/react-native/Libraries/Lists/SectionList.js
.*/node_modules/react-native/Libraries/Components/Touchable/TouchableHighlight.js
.*/node_modules/react-native/Libraries/EventEmitter/NativeEventEmitter.js
.*/node_modules/react-native/Libraries/Experimental/SwipeableRow/SwipeableFlatList.js
.*/node_modules/react-native/Libraries/Experimental/SwipeableRow/SwipeableListView.js
.*/node_modules/react-native/Libraries/Experimental/SwipeableRow/SwipeableRow.js
.*/node_modules/react-native/Libraries/Image/ImageBackground.js
.*/node_modules/react-native/Libraries/Image/resolveAssetSource.js
.*/node_modules/react-native/Libraries/Interaction/InteractionManager.js
.*/node_modules/react-native/Libraries/Interaction/TaskQueue.js
.*/node_modules/react-native/Libraries/LayoutAnimation/LayoutAnimation.js
.*/node_modules/react-native/Libraries/Lists/FlatList.js
.*/node_modules/react-native/Libraries/Image/AssetSourceResolver.js
.*/node_modules/react-native/Libraries/Inspector/BorderBox.js
.*/node_modules/react-native/Libraries/Inspector/BoxInspector.js
.*/node_modules/react-native/Libraries/Inspector/ElementProperties.js
.*/node_modules/react-native/Libraries/Inspector/Inspector.js
.*/node_modules/react-native/Libraries/Inspector/InspectorPanel.js
.*/node_modules/react-native/Libraries/Animated/src/nodes/AnimatedStyle.js
.*/node_modules/react-native/Libraries/Components/Switch/Switch.js
.*/node_modules/react-native/Libraries/Components/TextInput/InputAccessoryView.js
.*/node_modules/react-native/Libraries/Components/TextInput/TextInput.js
.*/node_modules/react-native/Libraries/Components/TextInput/TextInputState.js
.*/node_modules/react-native/Libraries/Components/Touchable/TouchableOpacity.js
.*/node_modules/react-native/Libraries/Components/View/PlatformViewPropTypes.js
.*/node_modules/react-native/Libraries/Components/View/View.js
.*/node_modules/react-native/Libraries/Components/View/ViewPropTypes.js
.*/node_modules/react-native/Libraries/EventEmitter/RCTDeviceEventEmitter.js
.*/node_modules/react-native/Libraries/Animated/src/nodes/AnimatedInterpolation.js
.*/node_modules/react-native/Libraries/Animated/src/nodes/AnimatedValue.js
.*/node_modules/react-native/Libraries/Components/ScrollResponder.js
.*/node_modules/react-native/Libraries/Components/ScrollView/ScrollViewStickyHeader.js
.*/node_modules/react-native/Libraries/Components/ScrollView/processDecelerationRate.js
.*/node_modules/react-native/Libraries/Components/Slider/Slider.js
.*/node_modules/react-native/Libraries/Components/StatusBar/StatusBar.js
.*/node_modules/react-native/Libraries/AppState/AppState.js
.*/node_modules/react-native/Libraries/BatchedBridge/MessageQueue.js
.*/node_modules/react-native/Libraries/BatchedBridge/NativeModules.js
.*/node_modules/react-native/Libraries/Components/AppleTV/TVEventHandler.js
.*/node_modules/react-native/Libraries/Components/Button.js
.*/node_modules/react-native/Libraries/Components/Keyboard/KeyboardAvoidingView.js
.*/node_modules/react-native/Libraries/Components/Picker/Picker.js
.*/node_modules/react-native/Libraries/CameraRoll/CameraRoll.js
.*/node_modules/react-native/Libraries/CameraRoll/ImagePickerIOS.js
.*/node_modules/react-native/Libraries/Color/normalizeColor.js
.*/node_modules/react-native/Libraries/Components/ActivityIndicator/ActivityIndicator.js

“flow-bin”: “0.90.0”, create-react-native-app version: 2.0.2

luca-borrione on Jan 17, 2019

In addition to the above, I also had to add this to [untyped]:

.*/node_modules/react-native/Libraries/react-native/react-native-implementation.js

flolege on Nov 2, 2018

Any solution? I am getting this on completely fresh installation with latest react-native

Error ┈┈┈┈┈┈┈ node_modules/react-native/Libraries/Components/Navigation/NavigatorIOS.ios.js:888:33
Cannot use function as a type because function is a value. To get the type of a value use typeof.

Error ┈┈┈┈┈┈ node_modules/react-native/Libraries/Components/TextInput/InputAccessoryView.js:86:11
Cannot use ReactPropsCheckType as a type because ReactPropsCheckType is a value. To get the type of a value use typeof.

Error ┈┈┈┈┈┈ node_modules/react-native/Libraries/Components/View/ViewPropTypes.js:123:11
Cannot use ReactPropsCheckType as a type because ReactPropsCheckType is a value. To get the type of a value use typeof.

trubi on Oct 21, 2018

I’m still having these issues even after upgrading to the latest .flowconfig as attached and the latest version of react-native

I had to add:

[ignore]

.*/node_modules/react-native/Libraries/react-native/react-native-implementation.js

EvHaus on Jul 8, 2018

RN 0.56 / Flow 0.75 switched to needing to use module.system.haste.name_reducers (see this part) of the flowconfig. So an up to date flowconfig should solve these errors in most cases.

But a further problem was this new option not being properly supported on Windows. A PR has just been merged which should fix this: https://github.com/facebook/flow/pull/7419 coming to the next Flow release.

jamesisaac on Feb 4, 2019

@trubi I’ve added the following to my .flowconfig for now:

[untyped]
.*/node_modules/react-native/Libraries/Components/Navigation/NavigatorIOS.ios.js
.*/node_modules/react-native/Libraries/Components/TextInput/InputAccessoryView.js
.*/node_modules/react-native/Libraries/Components/View/ViewPropTypes.js
.*/node_modules/react-native/Libraries/Components/SafeAreaView/SafeAreaView.ios.js

The [untyped] option is not documented yet but there is an issue for it waiting for someone to add to docs. This comment explains how it differs from [ignore].

jjenzz on Oct 22, 2018

Using htis flowconfig wound up fixing it: https://github.com/facebook/react-native/blob/master/local-cli/templates/HelloWorld/_flowconfig

EdwardDrapkin on Jun 20, 2018