add rule to avoid arrow parenthesis

Author: LonelyCpp

.eslintrc.js

@@ -1,4 +1,7 @@
 module.exports = {
   root: true,
-  extends: "@react-native-community"
+  extends: '@react-native-community',
+  rules: {
+    'arrow-parens': 'as-needed',
+  },
 };

.prettierrc.js

@@ -2,5 +2,6 @@ module.exports = {
   bracketSpacing: false,
   jsxBracketSameLine: true,
   singleQuote: true,
-  trailingComma: "all"
+  trailingComma: 'all',
+  arrowParens: 'avoid',
 };