skatejs
· Skate is a library built on top of the W3C web component specs that enables you to write functional and performant web components with a very small footprint.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window skatejs-5.2.4.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.