Upgrade all npm dependencies

.babelrc

@@ -1,5 +1,4 @@
 {
   sourceMaps: true,
-  presets: ["es2015"],
-  plugins: ["transform-es2015-modules-commonjs"]
+  presets: ["@babel/preset-env"]
 }

.eslintrc.json

@@ -9,6 +9,7 @@
         "sourceType": "module"
     },
     "rules": {
+        "no-prototype-builtins": "off",
         "indent": [
             "error",
             2

Gruntfile.js

@@ -9,8 +9,7 @@ module.exports = function (grunt) {
       dist: {
         options: {
           transform: [
-            ["babelify", {
-            }]
+            ["babelify", { "presets": [ "@babel/preset-env" ] }]
           ]
         },
         files: {
@@ -47,7 +46,7 @@ module.exports = function (grunt) {
       test: {
         options: {
           reporter: "spec",
-          require: ["babel-core/register"],
+          require: ["@babel/register"],
           // captureFile: 'results.txt', // Optionally capture the reporter output to a file
           quiet: false, // Optionally suppress output to standard out (defaults to false)
           clearRequireCache: false // Optionally clear the require cache before running tests (defaults to false)