Ianus

In ancient Roman religion and myth, Janus (Latin: Ianus, pronounced [ˈjaː.nus]) is the god of beginnings and transitions, and thereby of gates, doors, doorways, passages and endings. (from Wikipedia)

Ianus provides names of CSS3 animation and transition properties to make cross-browser development easier.

In environments that don’t support animations, transitions or even a DOM, properties are simply undefined.

The provided names are:

• transitionProperty
• transitionDuration
• transitionTimingFunction
• transitionDelay
• transition
• transitionend – the name of the 'transitionend' event
• css.transitionProperty – the CSS property name
• css.transitionDuration
• css.transitionTimingFunction
• css.transitionDelay
• css.transition

Cross-browser testing is kindly provided by BrowserStack.

But this has been written before!

Indeed, but unfortunately I could not find an implementation that would run under node.js without throwing. Since I want to share view code between browser and server, I had to come up with my own solution.