Обновил babel до 7 версии

Author: epsilonn

.babelrc

@@ -1,10 +1,16 @@
 {
-  "presets": ["es2015", "stage-0"],
-  "plugins": ["transform-object-assign"],
-
+  "presets": [
+    "@babel/preset-env"
+  ],
+  "plugins": [
+    "@babel/plugin-proposal-do-expressions"
+  ],
   "env": {
     "test": {
-      "plugins": ["babel-plugin-rewire"]
+      "plugins": [
+        "@babel/plugin-transform-object-assign",
+        "babel-plugin-rewire"
+      ]
     }
   }
 }

.npmrc

@@ -0,0 +1 @@
+save-exact = true

dist/x-bubbles-compact.js

@@ -22,13 +22,14 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "babel-eslint": "7.1.1",
-    "babel-loader": "6.2.10",
-    "babel-plugin-transform-object-assign": "6.22.0",
-    "babel-preset-es2015": "6.18.0",
-    "babel-preset-stage-0": "6.16.0",
-    "babel-register": "6.18.0",
-    "babel-plugin-rewire": "1.1.0",
+    "@babel/core": "7.4.3",
+    "@babel/plugin-proposal-do-expressions": "7.2.0",
+    "@babel/plugin-transform-object-assign": "7.2.0",
+    "@babel/preset-env": "7.4.0",
+    "babel-core": "7.0.0-bridge.0",
+    "babel-eslint": "10.0.1",
+    "babel-loader": "8.0.5",
+    "babel-plugin-rewire": "1.2.0",
     "benchmark": "2.1.2",
     "chai": "3.5.0",
     "document-register-element": "1.3.0",
@@ -42,7 +43,7 @@
     "istanbul-instrumenter-loader": "0.2.0",
     "jquery": "3.1.1",
     "karma": "1.3.0",
-    "karma-babel-preprocessor": "6.0.1",
+    "karma-babel-preprocessor": "^8.0.0-beta.0",
     "karma-chai": "0.1.0",
     "karma-coverage": "1.1.1",
     "karma-mocha": "1.3.0",