updated eslint file

.eslintrc

@@ -4,6 +4,10 @@
     "builtin": true,
     "es6": true
   },
+  "parserOptions": {
+    "ecmaVersion": 6,
+    "sourceType": "module"
+  },
   "globals": {},
   "rules": {
     "block-scoped-var": 0,
@@ -68,7 +72,7 @@
     "no-with": 2,
     "quotes": [0, "single"],
     "radix": 2,
-    "semi": [0, "never"],
+    "semi": [1, "always"],
     "strict": 0,
     "space-before-blocks": 1,
     "space-before-function-paren": [1, {
@@ -79,6 +83,10 @@
     "space-infix-ops": 1,
     "valid-typeof": 2,
     "vars-on-top": 0,
-    "wrap-iife": [2, "inside"]
+    "wrap-iife": [2, "inside"],
+    "prefer-const": ["error", {
+      "destructuring": "any",
+      "ignoreReadBeforeAssign": false
+      }]
   }
 }