Currently, the LibTF Javascript API makes extensive use of ES6 class notation. As such, games that use the library will only run on non-ancient browsers. If you are still using IE9 or Mosaic or something, you really ought to upgrade. ;) Eventually I'll add something to the compile chain to output minified ES5 and use that for stable releases, but as of now that's the situation.

The LibTF API is contained in the toplevel “LibTF” object, containing the following APIs and Classes:

• LibTF.Apparel
• LibTF.Transformable
• LibTF.Inventory
• LibTF.Persistence
• LibTF.PersistentObject
• LibTF.Person
• LibTF.Settings
• LibTF.StoryFormat
• LibTF.Util

(template blurb)