Fix linter, fix files by linter rules.

Fix backup file.

.eslintrc.js

@@ -1,27 +1,39 @@
 module.exports = {
-  root: true,
-  env: {
-    node: true
-  },
-  'extends': [
-    'plugin:vue/essential',
-    'eslint:recommended',
-    'airbnb'
-  ],
-  rules: {
-    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
-    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
-    'indent': ['error', 4, { 'SwitchCase': 1 }],
-    'max-len': ['error', { 'code': 120 }],
-    'class-methods-use-this': 'off', 
-    'object-curly-newline': ['error', { 'consistent': true }],
-    'comma-dangle': ['error', {
-      'functions': 'never',
-      'arrays': 'always-multiline',
-      'objects': 'always-multiline'
-    }]
-  },
-  parserOptions: {
-    parser: 'babel-eslint'
-  }
-}
+    root: true,
+    env: {
+        node: true
+    },
+    parserOptions: {
+        parser: 'babel-eslint',
+        sourceType: 'module',
+    },
+    plugins: [
+        'vue'
+    ],
+    extends: [
+        'plugin:vue/essential',
+        'eslint:recommended',
+    ],
+    rules: {
+        'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+        'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+        'indent': ['error', 4, { 'SwitchCase': 1 }],
+        'max-len': ['error', { 'code': 120 }],
+        'class-methods-use-this': 'off',
+        'object-curly-newline': ['error', { 'consistent': true }],
+        'comma-dangle': ['error', {
+            'functions': 'never',
+            'arrays': 'always-multiline',
+            'objects': 'always-multiline'
+        }],
+        'import/extensions': false,
+    },
+    settings: {
+        'import/resolver': {
+            node: {
+                extensions: ['.js', '.jsx', '.vue'],
+            },
+        },
+    },
+};
+