Added globalObject so it does not fallback to window

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "inputmask",
-  "version": "5.0.6-beta.13",
+  "version": "5.0.6-beta.15",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {

webpack.config.js

@@ -45,7 +45,8 @@ module.exports = function (env, argv) {
 		output: {
 			path: __dirname,
 			filename: "[name].js",
-			libraryTarget: "umd"
+			libraryTarget: "umd",
+			globalObject: "this"
 		},
 		externals: {
 			"jquery": {