The usage of CoffeeScript and TypeScript are the same as Less and Sass. 

Once you have the engines installed, the related file extension will be avaiable when you are creating a script file. 

Or you can then use the engine in the HTML tag attribute. 

<script engine='coffeescript'>

number   = 42
opposite = true

number = -42 if opposite

</script>

Please see the charpter of Less, Sass, Scss for more information.