ui: Ember upgrade 3.8 > 3.12

ui-v2/.eslintrc.js

@@ -1,11 +1,8 @@
 module.exports = {
   root: true,
   parserOptions: {
-    ecmaVersion: 2017,
-    sourceType: 'module',
-    ecmaFeatures: {
-      experimentalObjectRestSpread: true
-    }
+    ecmaVersion: 2018,
+    sourceType: 'module'
   },
   plugins: ['ember'],
   extends: ['eslint:recommended', 'plugin:ember/recommended'],
@@ -31,22 +28,20 @@ module.exports = {
         'server/**/*.js'
       ],
       parserOptions: {
-        sourceType: 'script',
-        ecmaVersion: 2015,
+        sourceType: 'script'
       },
       env: {
         browser: false,
-        node: true,
+        node: true
       },
-    },
+      plugins: ['node'],
+      rules: Object.assign({}, require('eslint-plugin-node').configs.recommended.rules, {
+        // add your custom rules and overrides for node files here
 
-    // test files
-    {
-      files: ['tests/**/*.js'],
-      excludedFiles: ['tests/dummy/**/*.js'],
-      env: {
-        embertest: true,
-      },
-    },
-  ],
+        // this can be removed once the following is fixed
+        // https://github.com/mysticatea/eslint-plugin-node/issues/77
+        'node/no-unpublished-require': 'off'
+      })
+    }
+  ]
 };

ui-v2/app/computed/catchable.js

@@ -1,11 +1,12 @@
 import ComputedProperty from '@ember/object/computed';
-import computedFactory from 'consul-ui/utils/computed/factory';
+import { computed as computedPropertyFactory } from '@ember/object';
 
-export default class Catchable extends ComputedProperty {
-  catch(cb) {
+export const computed = function() {
+  const prop = computedPropertyFactory(...arguments);
+  prop.catch = function(cb) {
     return this.meta({
       catch: cb,
     });
-  }
-}
-export const computed = computedFactory(Catchable);
+  };
+  return prop;
+};

ui-v2/config/environment.js

@@ -10,8 +10,7 @@ module.exports = function(environment) {
     EmberENV: {
       FEATURES: {
         // Here you can enable experimental features on an ember canary build
-        // e.g. 'with-controller': true
-        'ds-improved-ajax': true,
+        // e.g. EMBER_NATIVE_DECORATOR_SUPPORT: true
       },
       EXTEND_PROTOTYPES: {
         // Prevent Ember Data from overriding Date.parse.

ui-v2/package.json

@@ -55,15 +55,15 @@
     "clipboard": "^2.0.4",
     "ember-auto-import": "^1.4.0",
     "ember-changeset-validations": "^2.1.0",
-    "ember-cli": "~3.8.0",
+    "ember-cli": "~3.12.0",
     "ember-cli-app-version": "^3.2.0",
     "ember-cli-autoprefixer": "^0.8.1",
-    "ember-cli-babel": "^7.1.2",
+    "ember-cli-babel": "^7.7.3",
     "ember-cli-code-coverage": "^1.0.0-beta.4",
     "ember-cli-dependency-checker": "^3.1.0",
     "ember-cli-eslint": "^5.1.0",
     "ember-cli-flash": "^1.6.3",
-    "ember-cli-htmlbars": "^3.0.0",
+    "ember-cli-htmlbars": "^3.0.1",
     "ember-cli-htmlbars-inline-precompile": "^2.1.0",
     "ember-cli-inject-live-reload": "^2.0.1",
     "ember-cli-page-object": "^1.15.0-beta.2",
@@ -76,7 +76,7 @@
     "ember-collection": "^1.0.0-alpha.9",
     "ember-composable-helpers": "^2.1.0",
     "ember-computed-style": "^0.3.0",
-    "ember-data": "~3.8.0",
+    "ember-data": "~3.12.0",
     "ember-exam": "^4.0.0",
     "ember-export-application-global": "^2.0.0",
     "ember-href-to": "^3.1.0",
@@ -89,10 +89,11 @@
     "ember-qunit": "^4.5.1",
     "ember-resolver": "^5.0.1",
     "ember-sinon-qunit": "^3.4.0",
-    "ember-source": "~3.8.0",
+    "ember-source": "~3.12.0",
     "ember-test-selectors": "^2.1.0",
     "ember-truth-helpers": "^2.0.0",
     "eslint-plugin-ember": "^7.0.0",
+    "eslint-plugin-node": "^9.0.1",
     "husky": "^3.0.4",
     "ivy-codemirror": "^2.1.0",
     "js-yaml": "^3.13.1",
@@ -106,7 +107,7 @@
     "text-encoding": "^0.7.0"
   },
   "engines": {
-    "node": "6.* || 8.* || >= 10.*"
+    "node": "8.* || >= 10.*"
   },
   "ember-addon": {
     "paths": [

ui-v2/testem.js

@@ -9,7 +9,6 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
-        '--disable-gpu',
         '--disable-dev-shm-usage',
         '--disable-software-rasterizer',
         '--mute-audio',