message: rendering: Convert `BindTransform` to ES6 class
diff: */
  -function BindTransform({ moduleName }) {
  +class BindTransform {
  + constructor({ moduleName }) {
  this.moduleName = moduleName;
  this.syntax = null;
  }
  -BindTransform.prototype.transform = function(ast) {
  + transform(ast) {
  if (/\btemplates\/components\/cardstack\//.test(this.moduleName) ||
  /\btemplates\/(embedded|isolated).hbs/.test(this.moduleName)){
  var b = this.syntax.builders;
  @@ -93,7 +94,8 @@ BindTransform.prototype.transform = function(ast) {
  });
  }
  return ast;
  -};
  + }
  +}
  function getUnusedBlockParam(foundNames) {
  var foundName = false;
  