Asynchronous execution chain based on collections API with wrappers around DHTML DOM API, jQuery and XML+XSLT+XPATH .
First, make sure you have the Polymer CLI and npm
(packaged with Node.js) installed. Run npm install to install your element's dependencies,
then run polymer serve to serve your element locally.
$ polymer serve
$ polymer test
Your application is already set up to be tested via web-component-tester.
Run polymer test to run your application's test suite locally.