Upgrade to babel 7

Author: Gaurav0

ember-cli-build.js

@@ -5,12 +5,12 @@ const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');
 module.exports = function(defaults) {
   let app = new EmberAddon(defaults, {
     babel: {
-      plugins: ['transform-object-rest-spread']
+      plugins: ['@babel/plugin-proposal-object-rest-spread']
     },
     'ember-cli-babel': {
       includePolyfill: true,
       plugins: [
-        'transform-object-rest-spread'
+        '@babel/plugin-proposal-object-rest-spread'
       ]
     },
     'ember-test-selectors': {

package.json

@@ -23,8 +23,8 @@
     "ember:update": "node_modules/.bin/ember-cli-update"
   },
   "dependencies": {
-    "babel-plugin-transform-object-rest-spread": "^6.26.0",
-    "ember-cli-babel": "^6.6.0"
+    "@babel/plugin-proposal-object-rest-spread": "^7.3.1",
+    "ember-cli-babel": "^7.4.1"
   },
   "devDependencies": {
     "broccoli-asset-rev": "^2.7.0",