knockout.js + handlebars

gistfile1.coffee

class HandlebarsTemplateEngine extends ko.templateEngine
  renderTemplateSource: (compiledTemplate, bindingContext, options) ->
    data = bindingContext.$data
    htmlResult = compiledTemplate(data)

    ko.utils.parseHtmlFragment(htmlResult)

  makeTemplateSource: (template, templateDocument) ->
    throw "Could not find a template named: '#{template}'" unless JST[template]
    JST[template]

  # TODO: Figure out what this method is supposed to do
  isTemplateRewritten: ->
    true

ko.setTemplateEngine new HandlebarsTemplateEngine