upload images to firebase storage: this is a stripped down image uploader similar to the one in The Firecast Tutorial: Getting Started with Storage on the Web. The only major difference is it was created as a Polymer element.
This could easily be forked into something more useful and validatey.
Install the Polymer-CLI
First, make sure you have the Polymer CLI installed. Then run
polymer serve to serve your application locally.
Viewing Your Application
$ polymer serve
Building Your Application
$ polymer build
This will create a
build/ folder with
containing a bundled (Vulcanized) and unbundled builds, both run through HTML,
CSS, and JS optimizers.
You can serve the built versions by giving
polymer serve a folder to serve
$ polymer serve build/bundled
$ 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.