SJS new appendContent

exports.sym_appendHTMLFragment = @Symbol("appendHTMLFragment")

exports.appendHTMLFragment = function (x, node) {
  if (Array.isArray(x)) {
    array ..@each(function (x) {
      exports.appendHTMLFragment(x, node)
    })
  } else if (typeof x === "string") {
    node.appendChild(document.createTextNode(escapeString(x)))
  } else if (x != null) {
    x[sym_appendHTMLFragment](x, node)
  }
}

exports.appendContent = function (dom, fragment, block) {
  appendHTMLFragment(fragment, dom)

  // Handle other stuff, like block
}