polymerelements/iron-menu-behavior

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 binding to reduce the amount of boilerplate you need to write

Provide flexbox-based layouts

Formats your entire project with clang-format

Common (global) styles for Material Design elements.

Utility classes to help make testing easier

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

Web Components Polyfills

Generate TypeScript type declarations for Polymer components.

Manages a set of elements that can be selected

A behavior that enables keybindings for greater a11y.