function _getPreviousSiblingThatIsNotBlank(node) {
    var previousSibling = node.previousSibling;
    while (previousSibling && _isBlankTextNode(previousSibling)) {
      previousSibling = previousSibling.previousSibling;
    }
    return previousSibling;
  }
function _getPreviousSiblingThatIsNotBlank(node) {
    var previousSibling = node.previousSibling;
    while (previousSibling && _isBlankTextNode(previousSibling)) {
      previousSibling = previousSibling.previousSibling;
    }
    return previousSibling;
  }
function _getPreviousSiblingThatIsNotBlank ( node ) { var previousSibling = node . previousSibling ; while ( previousSibling && _isBlankTextNode ( previousSibling ) ) { previousSibling = previousSibling . previousSibling ; } return previousSibling ; }
Returns previous sibling node that is not a blank text node
Returns previous sibling node that is not a blank text node