diff --git a/.eslintrc.js b/.eslintrc.js
index c8f4a352..69443402 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -2,11 +2,13 @@ module.exports = {
   root: true,
   // https://github.com/feross/standard/blob/master/RULES.md#javascript-standard-style
   extends: [
-    'standard'
+    'standard',
+    'plugin:vue/essential'
   ],
-  parser: 'babel-eslint',
   parserOptions: {
-    sourceType: 'module'
+    'ecmaVersion': 2017,
+    'sourceType': 'module',
+    'parser': 'babel-eslint',
   },
   // required to lint *.vue files
   plugins: ['html'],
diff --git a/package.json b/package.json
index 413a0d2b..c870c3ee 100644
--- a/package.json
+++ b/package.json
@@ -40,16 +40,17 @@
     "connect-history-api-fallback": "^1.1.0",
     "copy-webpack-plugin": "^4.0.0",
     "cross-env": "^5.2.0",
-    "cssnano": "^4.1.7",
     "css-loader": "^0.28.11",
+    "cssnano": "^4.1.7",
     "es6-promise": "^4.2.4",
-    "eslint": "^6.4.0",
+    "eslint": "^6.8.0",
     "eslint-config-standard": "^6.1.0",
     "eslint-friendly-formatter": "^4.0.1",
     "eslint-loader": "^2.2.1",
     "eslint-plugin-html": "^6.0.0",
     "eslint-plugin-promise": "^3.4.0",
     "eslint-plugin-standard": "^4.0.1",
+    "eslint-plugin-vue": "^6.2.2",
     "eventsource-polyfill": "^0.9.6",
     "express": "^4.16.3",
     "extract-text-webpack-plugin": "^2.0.0-rc.3",
diff --git a/src/Multiselect.vue b/src/Multiselect.vue
index 72abdfa2..f2eeb45d 100644
--- a/src/Multiselect.vue
+++ b/src/Multiselect.vue
@@ -341,6 +341,7 @@ export default {
           ? { width: '100%' }
           : { width: '0', position: 'absolute', padding: '0' }
       }
+      return ''
     },
     contentStyle () {
       return this.options.length
diff --git a/src/multiselectMixin.js b/src/multiselectMixin.js
index 85323ef9..24c00ce2 100644
--- a/src/multiselectMixin.js
+++ b/src/multiselectMixin.js
@@ -571,7 +571,7 @@ export default {
           this.id
         )
       }
-      
+
       if (this.closeOnSelect) this.deactivate()
     },
     /**
diff --git a/src/pointerMixin.js b/src/pointerMixin.js
index 4a967362..458c5f09 100644
--- a/src/pointerMixin.js
+++ b/src/pointerMixin.js
@@ -51,7 +51,7 @@ export default {
         return [
           'multiselect__option--disabled',
           { 'multiselect__option--group': selectedGroup.$isLabel }
-        ];
+        ]
       }
 
       const group = this.options.find(option => {