Change jshint to eslint, update examples

Author: tshemsedinov

.eslintrc.yml

@@ -1,8 +1,9 @@
-parserOptions:
-  ecmaVersion: 6
 env:
+  es6: true
   node: true
 extends: 'eslint:recommended'
+globals:
+  api: false
 rules:
   indent:
     - error
@@ -69,7 +70,7 @@ rules:
       ignoreUrls: true
   max-nested-callbacks:
     - error
-    - max: 5
+    - max: 7
   new-cap:
     - error
     - newIsCap: true
@@ -137,3 +138,36 @@ rules:
   no-use-before-define:
     - error
     - functions: false
+  arrow-body-style:
+    - error
+    - as-needed
+  arrow-spacing:
+    - error
+  no-confusing-arrow:
+    - error
+    - allowParens: true
+  no-useless-computed-key:
+    - error
+  no-useless-rename:
+    - error
+  no-var:
+    - error
+  object-shorthand:
+    - error
+    - always
+  prefer-arrow-callback:
+    - error
+  prefer-const:
+    - error
+  prefer-numeric-literals:
+    - error
+  prefer-rest-params:
+    - error
+  prefer-spread:
+    - error
+  rest-spread-spacing:
+    - error
+    - never
+  template-curly-spacing:
+    - error
+    - never

.jshintrc

@@ -3,8 +3,8 @@
 const arr = [7, 10, 1, 5, 2];
 arr.field = 'Value';
 
-for (let i in arr) {
-  let value = arr[i];
+for (const i in arr) {
+  const value = arr[i];
   console.log(i, value);
 }
 

JavaScript/4-for-in.js

@@ -3,6 +3,6 @@
 const arr = [7, 10, 1, 5, 2];
 arr.field = 'Value';
 
-for (let i of arr) {
+for (const i of arr) {
   console.log(i);
 }

JavaScript/5-for-of.js

@@ -6,8 +6,9 @@ label1: {
   console.log('Hello');
   if (flag) break label1;
   console.log('World');
+  label2: {
+    console.log('There');
+    break label2;
+  }
 }
 
-label2: {
-  console.log('There');
-}