example.js

setCaret: function($el) {
  var caret, lastCaret,
    _this = this;
  if (_.any(this.NO_CARET_TYPES, function(type) {
    return type === _this.model.get('type');
  })) {
    return;
  }
  lastCaret = this.getCaret();
  if (($el != null ? $el[0] : void 0) != null) {
    caret = $el.atCaret('getCaretPosition');
  }
  this.model.set({
    caret: caret,
    lastCaret: lastCaret
  });
  if (caret != null) {
    $el.attr('data-caret', caret);
  }
  if (lastCaret != null) {
    return $el.attr('data-last-caret', lastCaret);
  }
},