Move to latest webpack/babel versions

package.json

@@ -25,11 +25,10 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "babel-core": "^6.26.3",
-    "babel-loader": "^7.1.5",
-    "babel-preset-env": "^1.7.0",
-    "babel-preset-stage-3": "^6.24.1",
-    "webpack": "^4.20.2",
-    "webpack-cli": "^3.1.1"
+    "@babel/core": "^7.2.2",
+    "@babel/preset-env": "^7.3.1",
+    "babel-loader": "^8.0.5",
+    "webpack": "^4.29.0",
+    "webpack-cli": "^3.2.1"
   }
 }

webpack.config.js

@@ -1,13 +1,12 @@
-const webpack = require('webpack');
-const path = require('path');
+const path = require("path");
 
 module.exports = {
-  entry: path.resolve(__dirname + '/src/vue-connection-listener.js'),
+  entry: path.resolve(__dirname + "/src/vue-connection-listener.js"),
   output: {
-    path: path.resolve(__dirname + '/dist/'),
-    filename: 'vue-connection-listener.js',
-    library: 'vue-connection-listener',
-    libraryTarget: 'umd',
+    path: path.resolve(__dirname + "/dist/"),
+    filename: "vue-connection-listener.js",
+    library: "vue-connection-listener",
+    libraryTarget: "umd",
     umdNamedDefine: true
   },
   module: {
@@ -16,7 +15,7 @@ module.exports = {
         test: /\.js$/,
         exclude: /node_modules/,
         use: {
-          loader: 'babel-loader'
+          loader: "babel-loader"
         }
       }
     ]