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

Provides a set of behaviors for the iron elements

Provides a behavior for making an element an overlay

A system for animating Polymer-based web components

Utility classes to make building demo pages easier

An image-displaying element with lots of convenient features

Utility classes to help make testing easier

Web Components Polyfills

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

JavaScript implementation of the Web Animations API

Formats your entire project with clang-format

Generate TypeScript type declarations for Polymer components.