FizzBuzz in TypeScript

fizzbuzz.ts

module FizzBuzz
{
	export var doFizzzBuzz = function (n : number)
	{
		var fb = new FizzBuzz (new Fizz (new Buzz (null)))
		var table = document.createElement ("table")
		document.body.appendChild (table)
		for (var i = 1; i <= n; i++)
		{
			var row = document.createElement ("tr")
			var key = document.createElement ("th")
			key.appendChild (document.createTextNode (i.toString ()))
			var value = document.createElement ("td")
			value.appendChild (document.createTextNode (fb.fizzbuzz (i)))
			row.appendChild (key)
			row.appendChild (value)
			table.appendChild (row)
		}
	}
	
	class FizzBuzz
	{
		fb : FizzBuzz;
		
		constructor (fb : FizzBuzz)
		{
			this.fb = fb
		}
	
		consume (n : number, buffer : string) : string
		{
			return buffer
		}
		
		fizzbuzz (n : number) : string
		{
			var buffer = ""
			for (var current = this.fb; current != null; current = current.fb)
			{
				buffer = current.consume (n, buffer)
			}
			if (buffer.length == 0)
			{
				buffer = n.toString ()
			}
			return buffer
		}
	}
	
	class Fizz extends FizzBuzz
	{
		constructor (fb : FizzBuzz)
		{
			super (fb)
		}
		
		consume (n : number, buffer : string) : string
		{
			if (n % 3 == 0)
			{
				return buffer + "Fizz"
			}
			else
			{
				return buffer
			}
		}
	}
	
	class Buzz extends FizzBuzz
	{
		constructor (fb : FizzBuzz)
		{
			super (fb)
		}
		
		consume (n : number, buffer : string) : string
		{
			if (n % 5 == 0)
			{
				return buffer + "Buzz"
			}
			else
			{
				return buffer
			}
		}
	}
}

FizzBuzz.doFizzzBuzz (100)