Ionic2 Scroll Bottom ?*

I am getting the error
"[ts] Property 'scrollBottom' does not exist on type ContentDimensions" .The properties of dimensions are as below:

 {
  "contentHeight": 465,
  "contentTop": 64,
  "contentBottom": 49,
  "contentWidth": 325,
  "contentLeft": 0,
  "scrollHeight": 465,
  "scrollTop": 0,
  "scrollWidth": 325,
  "scrollLeft": 0
}