Add ESLint

.eslintignore

@@ -0,0 +1,5 @@
+.idea
+
+android/
+ios/
+node_modules/

.eslintrc.json

@@ -0,0 +1,34 @@
+{
+    "extends": [
+      "eslint:recommended"
+    ],
+    "rules": {
+        "array-bracket-spacing": ["error", "always"],
+        "comma-dangle": ["error", "always-multiline"],
+        "eol-last": ["error", "always"],
+        "indent": [
+            "error",
+            4,
+            {"SwitchCase": 1}
+        ],
+        "linebreak-style": [
+            "error",
+            "unix"
+        ],
+        "no-empty": ["error", {"allowEmptyCatch": true}],
+        "no-multiple-empty-lines": ["error", {"max": 1, "maxBOF": 0 }],
+        "no-var": ["error"],
+        "object-curly-spacing": ["error", "always"],
+        "quotes": ["error", "single"],
+        "semi": ["error", "always" ],
+        "space-infix-ops": "error"
+    },
+    "env": {
+        "es6": true,
+        "node": true
+    },
+    "parserOptions": {
+        "ecmaVersion": 6,
+        "sourceType": "module"
+    }
+}

package.json

@@ -4,7 +4,8 @@
   "description": "React Native bridge to the AppMetrica on both iOS and Android",
   "main": "index.js",
   "scripts": {
-    "test": "npm test"
+    "test": "npm run test:eslint",
+    "test:eslint": "eslint ."
   },
   "repository": {
     "type": "git",
@@ -25,5 +26,8 @@
   "homepage": "https://github.com/doochik/react-native-appmetrica#readme",
   "peerDependencies": {
     "react-native": ">=0.45"
+  },
+  "devDependencies": {
+    "eslint": "^4.7.0"
   }
 }