Add flow (#10)

* Add flow

* Solver Mege conflict

* Fix merge

* Fix merge

closes #2

Author: JABvzla

.flowconfig

@@ -0,0 +1,70 @@
+[ignore]
+; 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/.*
+
+[untyped]
+.*/node_modules/react-native
+
+[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]
+emoji=true
+
+esproposal.optional_chaining=enable
+esproposal.nullish_coalescing=enable
+
+module.system=haste
+module.system.haste.use_name_reducers=true
+# 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$' -> '\1'
+module.system.haste.paths.blacklist=.*/__tests__/.*
+module.system.haste.paths.blacklist=.*/__mocks__/.*
+module.system.haste.paths.blacklist=<PROJECT_ROOT>/node_modules/react-native/Libraries/Animated/src/polyfills/.*
+module.system.haste.paths.whitelist=<PROJECT_ROOT>/node_modules/react-native/Libraries/.*
+
+munge_underscores=true
+
+module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
+
+module.file_ext=.js
+module.file_ext=.jsx
+module.file_ext=.json
+module.file_ext=.native.js
+
+suppress_type=$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

README.md

@@ -29,6 +29,7 @@ To inject custom scripts and remove unnecessary files.
 - [x] ESlint (extends Airbnb) v4.19.1
 - [x] Lint Staged v7.3.0
 - [x] Prettier v1.14.3
+- [x] Flow v0.84.0
 
 ### Custom Scripts
 
@@ -48,7 +49,6 @@ To inject custom scripts and remove unnecessary files.
 
 ### Roadmap
 
-- [ ] Add Flow
 - [ ] Add Enzyme
 - [ ] Add Husky
 

devDependencies.json

@@ -11,6 +11,7 @@
   "eslint-plugin-prettier": "3.0.0",
   "eslint-plugin-react": "7.11.1",
   "eslint-plugin-react-native": "3.5.0",
+  "flow-bin": "0.84.0",
   "lint-staged": "7.3.0",
   "prettier": "1.14.3"
 }

src/App/index.js

@@ -1,3 +1,5 @@
+//@flow
+
 /**
  * React Native Basic App
  * https://github.com/facebook/react-native
@@ -48,6 +50,7 @@ const App = (
       <Text style={styles.feature}>{'\u2705 ESLint'}</Text>
       <Text style={styles.feature}>{'\u2705 Prettier'}</Text>
       <Text style={styles.feature}>{'\u2705 Lint Staged'}</Text>
+      <Text style={styles.feature}>{'\u2705 Flow'}</Text>
       <Text style={styles.feature}>{'\u2705 Custom Scripts'}</Text>
     </View>
     <Text style={styles.instructions}>To get started, edit App.js</Text>