webpack-umd-module

1. install the npm dependencies:

npm install

2. run the webpack server:

npm start

3. access the index.html file index.html

4. create in the console new TestService object and check its methods and properties:

var obj = new TestService();
console.log(obj.testProp); // 27
obj.showTest('NEW value'); // This is a public test method. The parameter value is:  NEW value