lol.coffee

$ ->
  sidebar = document.querySelector('.js-org-migration-settings-sidebar')

  if sidebar?
    sidebarRect = sidebar.getBoundingClientRect()
    parentRect = sidebar.parentNode.getBoundingClientRect()
    stickySidebarLeft = parentRect.width + parentRect.left - sidebarRect.width
    stickySidebarTop = 16
    stickyThreshold = sidebarRect.top + window.pageYOffset - stickySidebarTop

    originalPosition = sidebar.style.position;
    originalTop = sidebar.style.top;
    originalLeft = sidebar.style.left;
    originalWidth = sidebar.style.width;

    window.addEventListener 'scroll', ->
      if window.pageYOffset >= stickyThreshold
        sidebar.style.position = 'fixed'
        sidebar.style.top = stickySidebarTop + 'px'
        sidebar.style.left = stickySidebarLeft + 'px'
        sidebar.style.width = '250px'
      else
        sidebar.style.position = originalPosition
        sidebar.style.top = originalTop
        sidebar.style.left = originalLeft
        sidebar.style.width = originalWidth