Ensure examples are clear: always use explicit arrow parens (#82)

Author: hramos

.prettierrc

@@ -9,6 +9,7 @@
     {
       "files": ["website/core/**/*.js", "website/static/js/**/*.js"],
       "options": {
+        "arrowParens": "avoid",
         "bracketSpacing": false,
         "jsxBracketSameLine": true,
         "printWidth": 80,
@@ -23,6 +24,7 @@
         "website/blog/**/*.md"
       ],
       "options": {
+        "arrowParens": "always",
         "bracketSpacing": false,
         "jsxBracketSameLine": true,
         "printWidth": 80,

docs/accessibilityinfo.md

@@ -18,7 +18,7 @@ class ScreenReaderStatusExample extends React.Component {
       'change',
       this._handleScreenReaderToggled
     );
-    AccessibilityInfo.fetch().done(isEnabled => {
+    AccessibilityInfo.fetch().done((isEnabled) => {
       this.setState({
         screenReaderEnabled: isEnabled,
       });
@@ -32,7 +32,7 @@ class ScreenReaderStatusExample extends React.Component {
     );
   }
 
-  _handleScreenReaderToggled = isEnabled => {
+  _handleScreenReaderToggled = (isEnabled) => {
     this.setState({
       screenReaderEnabled: isEnabled,
     });

docs/alertios.md

@@ -115,7 +115,7 @@ AlertIOS.prompt(
     },
     {
       text: 'OK',
-      onPress: password => console.log('OK Pressed, password: ' + password),
+      onPress: (password) => console.log('OK Pressed, password: ' + password),
     },
   ],
   'secure-text'
@@ -130,7 +130,7 @@ Example with the default button and a custom callback:
 AlertIOS.prompt(
   'Update username',
   null,
-  text => console.log('Your username is ' + text),
+  (text) => console.log('Your username is ' + text),
   null,
   'default'
 );

docs/asyncstorage.md

@@ -275,7 +275,7 @@ Example:
 
 ```javascript
 let keys = ['k1', 'k2'];
-AsyncStorage.multiRemove(keys, err => {
+AsyncStorage.multiRemove(keys, (err) => {
   // keys k1 & k2 removed, if they existed
   // do most stuff after removal (if you want)
 });
@@ -338,8 +338,8 @@ let multi_merge_pairs = [
   ['UID345', JSON.stringify(UID345_delta)],
 ];
 
-AsyncStorage.multiSet(multi_set_pairs, err => {
-  AsyncStorage.multiMerge(multi_merge_pairs, err => {
+AsyncStorage.multiSet(multi_set_pairs, (err) => {
+  AsyncStorage.multiMerge(multi_merge_pairs, (err) => {
     AsyncStorage.multiGet(['UID234', 'UID345'], (err, stores) => {
       stores.map((result, i, store) => {
         let key = store[i][0];

docs/custom-webview-android.md

@@ -217,7 +217,7 @@ export default class CustomWebView extends Component {
     finalUrl: 'about:blank',
   };
 
-  _onNavigationCompleted = event => {
+  _onNavigationCompleted = (event) => {
     const {onNavigationCompleted} = this.props;
     onNavigationCompleted && onNavigationCompleted(event);
   };

docs/custom-webview-ios.md

@@ -190,7 +190,7 @@ export default class CustomWebView extends Component {
     finalUrl: 'about:blank',
   };
 
-  _onNavigationCompleted = event => {
+  _onNavigationCompleted = (event) => {
     const {onNavigationCompleted} = this.props;
     onNavigationCompleted && onNavigationCompleted(event);
   };

docs/headless-js-android.md

@@ -16,7 +16,7 @@ AppRegistry.registerHeadlessTask('SomeTaskName', () => require('SomeTaskName'));
 Then, in `SomeTaskName.js`:
 
 ```javascript
-module.exports = async taskData => {
+module.exports = async (taskData) => {
   // do stuff
 };
 ```

docs/integration-with-existing-apps.md

@@ -314,7 +314,7 @@ import {AppRegistry, StyleSheet, Text, View} from 'react-native';
 
 class RNHighScores extends React.Component {
   render() {
-    var contents = this.props['scores'].map(score => (
+    var contents = this.props['scores'].map((score) => (
       <Text key={score.name}>
         {score.name}:{score.value}
         {'\n'}

docs/native-modules-android.md

@@ -198,7 +198,7 @@ This method would be accessed in JavaScript using:
 UIManager.measureLayout(
   100,
   100,
-  msg => {
+  (msg) => {
     console.log(msg);
   },
   (x, y, width, height) => {

docs/network.md

@@ -44,11 +44,11 @@ Networking is an inherently asynchronous operation. Fetch methods will return a
 ```javascript
 function getMoviesFromApiAsync() {
   return fetch('https://facebook.github.io/react-native/movies.json')
-    .then(response => response.json())
-    .then(responseJson => {
+    .then((response) => response.json())
+    .then((responseJson) => {
       return responseJson.movies;
     })
-    .catch(error => {
+    .catch((error) => {
       console.error(error);
     });
 }
@@ -130,7 +130,7 @@ The [XMLHttpRequest API](https://developer.mozilla.org/en-US/docs/Web/API/XMLHtt
 
 ```javascript
 var request = new XMLHttpRequest();
-request.onreadystatechange = e => {
+request.onreadystatechange = (e) => {
   if (request.readyState !== 4) {
     return;
   }
@@ -160,17 +160,17 @@ ws.onopen = () => {
   ws.send('something'); // send a message
 };
 
-ws.onmessage = e => {
+ws.onmessage = (e) => {
   // a message was received
   console.log(e.data);
 };
 
-ws.onerror = e => {
+ws.onerror = (e) => {
   // an error occurred
   console.log(e.message);
 };
 
-ws.onclose = e => {
+ws.onclose = (e) => {
   // connection closed
   console.log(e.code, e.reason);
 };