Install husky and prettier to format staged files

.eslintrc.js

 module.exports = {
   root: true,
-  extends: [
-    'eslint:recommended',
-    'plugin:react/recommended',
-  ],
+  extends: ['eslint:recommended', 'plugin:react/recommended'],
   env: {
     node: true,
     mocha: true,
@@ -24,23 +21,9 @@ module.exports = {
     },
   },
   rules: {
-    indent: ['error', 2],
-    'no-console': ['error', { 'allow': ['warn', 'error'] }],
-    'space-before-function-paren': 0,
-    semi: ['warn', 'never'],
-    'space-infix-ops': ['warn'],
+    'no-console': ['error', { allow: ['warn', 'error'] }],
     'no-var': 'error',
     'prefer-const': 'error',
-    'no-trailing-spaces': 'error',
     'react/prop-types': 2,
-    'max-len': [
-      1,
-      {
-        'ignoreStrings': true,
-        'ignoreComments': true,
-        'ignoreTemplateLiterals': true
-      }
-    ],
-    'no-multi-spaces': 2,
   },
-};
+}

.husky/pre-commit

+#!/bin/sh
+. "$(dirname "$0")/_/husky.sh"
+
+npx pretty-quick --staged

.prettierrc.js

 module.exports = {
-  bracketSpacing: false,
-  jsxBracketSameLine: true,
   singleQuote: true,
-  trailingComma: 'all',
-};
+  semi: false,
+}

package.json

@@ -25,7 +25,8 @@
     "update-changelog": "node ./tools/bin/update-changelog.js",
     "release": "node ./tools/release-wizard.js",
     "clear": ". scripts/clear.sh",
-    "postinstall": "npx jetify"
+    "postinstall": "npx jetify",
+    "prepare": "husky install"
   },
   "dependencies": {
     "@ptomasroos/react-native-multi-slider": "^2.2.0",
@@ -72,12 +73,15 @@
     "dirty-chai": "^2.0.1",
     "eslint": "^6.4.0",
     "eslint-plugin-react": "^7.8.2",
+    "husky": "^6.0.0",
     "jase": "^1.2.0",
     "jest": "^24.9.0",
     "jetifier": "^1.6.6",
     "left-pad": "^1.3.0",
     "metro-react-native-babel-preset": "^0.56.0",
     "mocha": "^5.2.0",
+    "prettier": "2.4.0",
+    "pretty-quick": "^3.1.1",
     "react-native-version": "^3.1.0",
     "react-test-renderer": "16.9.0",
     "readline": "^1.3.0"