Fix eslint errors

app/assets/javascripts/environments/components/environment_actions.js.es6

-/*= require vue
+/*= require vue */
 /* global Vue */
 
 (() => {

app/assets/javascripts/environments/components/environment_external_url.js.es6

-/*= require vue
+/*= require vue */
 /* global Vue */
 
 (() => {

app/assets/javascripts/environments/components/environment_item.js.es6

-/*= require lib/utils/timeago
-/*= require lib/utils/text_utility
-/*= require vue_common_component/commit
-/*= require ./environment_actions
-/*= require ./environment_external_url
-/*= require ./environment_stop
-/*= require ./environment_rollback
+/*= require lib/utils/timeago */
+/*= require lib/utils/text_utility */
+/*= require vue_common_component/commit */
+/*= require ./environment_actions */
+/*= require ./environment_external_url */
+/*= require ./environment_stop */
+/*= require ./environment_rollback */
 
 /* globals Vue, timeago */
 
@@ -17,7 +17,7 @@
    * Recursive component based on [Tree View](https://vuejs.org/examples/tree-view.html)
    *
    * See this [issue](https://gitlab.com/gitlab-org/gitlab-ce/issues/22539)
-   * for more information.
+   * for more information.15
    */
 
   window.gl = window.gl || {};
@@ -153,7 +153,7 @@
        * @returns {String}
        */
       createdDate() {
-        const timeagoInstance = new timeago();
+        const timeagoInstance = new timeago(); // eslint-disable-line
 
         return timeagoInstance.format(this.model.created_at);
       },

app/assets/javascripts/environments/components/environment_rollback.js.es6

-/*= require vue
+/*= require vue */
 /* global Vue */
 
 (() => {

app/assets/javascripts/environments/components/environment_stop.js.es6

-/*= require vue
+/*= require vue */
 /* global Vue */
 
 (() => {
@@ -15,7 +15,7 @@
 
     methods: {
       openConfirmDialog() {
-        return window.confirm('Are you sure you want to stop this environment?');
+        return window.confirm('Are you sure you want to stop this environment?'); // eslint-disable-line
       },
     },
 

app/assets/javascripts/environments/vue_resource_interceptor.js.es6

-/* eslint-disable */
+/* global Vue */
 Vue.http.interceptors.push((request, next) => {
   Vue.activeResources = Vue.activeResources ? Vue.activeResources + 1 : 1;
 
-  next(function (response) {
-    if (typeof response.data === "string") {
-      response.data = JSON.parse(response.data)
+  next((response) => {
+    if (typeof response.data === 'string') {
+      response.data = JSON.parse(response.data); // eslint-disable-line
     }
 
-    Vue.activeResources--;
+    Vue.activeResources--; // eslint-disable-line
   });
 });

app/assets/javascripts/vue_common_component/commit.js.es6

-/*= require vue
+/*= require vue */
 /* global Vue */
 (() => {
   window.gl = window.gl || {};

spec/features/environments_spec.rb

 require 'spec_helper'
 
-feature 'Environments', feature: true, js:true do
+feature 'Environments', feature: true, js: true do
   given(:project) { create(:empty_project) }
   given(:user) { create(:user) }
   given(:role) { :developer }