FizzBuzz in TypeScript

fizzbuzz.ts

module FizzBuzz
{
	var convert = function (fb : FizzBuzz, n : number) : string
	{
		var buffer = ""
		for (var current = fb; current != null; current = current.next)
		{
			buffer = current.consume (n, buffer)
		}
		if (buffer.length == 0)
		{
			buffer = n.toString ()
		}
		return buffer
	}
	
	export var doFizzzBuzz = function (n : number)
	{
		var fb = 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 (convert (fb, i)))
			row.appendChild (key)
			row.appendChild (value)
			table.appendChild (row)
		}
	}

	class FizzBuzz
	{
		next : FizzBuzz;
		consume : (n : number, buffer : string) => string;

		constructor (fb : FizzBuzz)
		{
			this.next = fb
		}
	}

	class Fizz extends FizzBuzz
	{
		constructor (fb : FizzBuzz)
		{
			super (fb)
		}

		consume = function (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 = function (n : number, buffer : string) : string
		{
			if (n % 5 == 0)
			{
				return buffer + "Buzz"
			}
			else
			{
				return buffer
			}
		}
	}
}

FizzBuzz.doFizzzBuzz (100)