Provides a set of behaviors for the iron elements

Provide flexbox-based layouts

Provides a behavior for an element that validates user input

The Polymer library makes it easy to create your own web components. Give your element some markup and properties, and then use it on a site. Polymer provides features like dynamic templates and data

Formats your entire project with clang-format

Utility classes to make building demo pages easier

Utility classes to help make testing easier

Common (global) styles for Material Design elements.

A simple element to fixture DOM for tests

Client-side dependencies for web-component-tester tests installed via npm.

Web Components Polyfills

Generate TypeScript type declarations for Polymer components.