First, make sure you have the [Polymer CLI](https://www.npmjs.com/package/polymer-cli) installed. Then run `polymer serve` to serve your element locally.
npm install @firefly-elements/firefly-tray-mixin#
Install the Polymer-CLI
First, make sure you have the Polymer CLI installed. Then run polymer serve to serve your element locally.
Viewing Your Element
``
`
$ polymer serve
`
Running Tests
`
$ polymer test
polymer test` to run your application's test suite locally.
Your application is already set up to be tested via web-component-tester. Run firefly-tray-mixin