Update Site Page Properties

private async updatePageProperties(fileid: number, submitstatus: string, promotedstate: number)
  {
    var datePublished = new Date();
    var currentUserId = await pnp.sp.web.currentUser.select("Id").get();
    await pnp.sp.web.lists.getByTitle("Site Pages").items.getById(fileid).update({
        PromotedState: promotedstate,
        News_x0020_Status: submitstatus,
        FirstPublishedDate: submitstatus.toLowerCase() == "published" ? datePublished.toISOString() : null,
        ApprovedById : submitstatus.toLowerCase() == "published" ? currentUserId.Id : null
      }).then((iar: ItemUpdateResult) => {
        console.log(iar);
      });
  }