diff --git a/js/src/alert.js b/js/src/alert.js
index 9332aa891d..9d8a865d1c 100644
--- a/js/src/alert.js
+++ b/js/src/alert.js
@@ -137,6 +137,10 @@ class Alert {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/button.js b/js/src/button.js
index 0e3b8a9df5..ce69253e44 100644
--- a/js/src/button.js
+++ b/js/src/button.js
@@ -112,6 +112,10 @@ class Button {
     if (triggerChangeEvent) {
       this._element.classList.toggle(ClassName.ACTIVE)
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   dispose() {
diff --git a/js/src/carousel.js b/js/src/carousel.js
index fd6d5bf802..15a56bd76a 100644
--- a/js/src/carousel.js
+++ b/js/src/carousel.js
@@ -579,6 +579,10 @@ class Carousel {
 
     event.preventDefault()
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
@@ -597,7 +601,6 @@ EventHandler.on(window, Event.LOAD_DATA_API, () => {
   }
 })
 
-
 /**
  * ------------------------------------------------------------------------
  * jQuery
diff --git a/js/src/collapse.js b/js/src/collapse.js
index 7d6aa30ed8..d04743d039 100644
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@@ -373,6 +373,10 @@ class Collapse {
       Collapse._collapseInterface(this, config)
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/dom/polyfill.js b/js/src/dom/polyfill.js
new file mode 100644
index 0000000000..644e6025b1
--- /dev/null
+++ b/js/src/dom/polyfill.js
@@ -0,0 +1,94 @@
+import EventHandler from './eventHandler'
+
+const Polyfill = (() => {
+  // defaultPrevented is broken in IE.
+  // https://connect.microsoft.com/IE/feedback/details/790389/event-defaultprevented-returns-false-after-preventdefault-was-called
+  const workingDefaultPrevented = (() => {
+    const e = document.createEvent('CustomEvent')
+    e.initEvent('Bootstrap', true, true)
+    e.preventDefault()
+    return e.defaultPrevented
+  })()
+
+  let defaultPreventedPreservedOnDispatch = true
+
+  // CustomEvent polyfill for IE (see: https://mzl.la/2v76Zvn)
+  if (typeof window.CustomEvent !== 'function') {
+    window.CustomEvent = (event, params) => {
+      params = params || {
+        bubbles: false,
+        cancelable: false,
+        detail: null
+      }
+      const evt = document.createEvent('CustomEvent')
+      evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
+      if (!workingDefaultPrevented) {
+        const origPreventDefault = Event.prototype.preventDefault
+        evt.preventDefault = () => {
+          if (!evt.cancelable) {
+            return
+          }
+
+          origPreventDefault.call(evt)
+          Object.defineProperty(evt, 'defaultPrevented', {
+            get() {
+              return true
+            },
+            configurable: true
+          })
+        }
+      }
+      return evt
+    }
+
+    window.CustomEvent.prototype = window.Event.prototype
+  } else {
+    // MSEdge resets defaultPrevented flag upon dispatchEvent call if at least one listener is attached
+    defaultPreventedPreservedOnDispatch = (() => {
+      const e = new CustomEvent('Bootstrap', {
+        cancelable: true
+      })
+
+      const element = document.createElement('div')
+      element.addEventListener('Bootstrap', () => null)
+
+      e.preventDefault()
+      element.dispatchEvent(e)
+      return e.defaultPrevented
+    })()
+  }
+
+  // Event constructor shim
+  if (!window.Event || typeof window.Event !== 'function') {
+    const origEvent = window.Event
+    window.Event = (inType, params) => {
+      params = params || {}
+      const e = document.createEvent('Event')
+      e.initEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable))
+      return e
+    }
+    window.Event.prototype = origEvent.prototype
+  }
+
+  // focusin and focusout polyfill
+  if (typeof window.onfocusin === 'undefined') {
+    (() => {
+      function listenerFocus(event) {
+        EventHandler.trigger(event.target, 'focusin')
+      }
+      function listenerBlur(event) {
+        EventHandler.trigger(event.target, 'focusout')
+      }
+      EventHandler.on(document, 'focus', 'input', listenerFocus)
+      EventHandler.on(document, 'blur', 'input', listenerBlur)
+    })()
+  }
+
+  return {
+    get defaultPreventedPreservedOnDispatch() {
+      return defaultPreventedPreservedOnDispatch
+    }
+  }
+})()
+
+export default Polyfill
diff --git a/js/src/dropdown.js b/js/src/dropdown.js
index ddc783c0dd..282e7645ff 100644
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@@ -505,6 +505,10 @@ class Dropdown {
 
     items[index].focus()
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/index.js b/js/src/index.js
index 327de242b2..aa35ed07b3 100644
--- a/js/src/index.js
+++ b/js/src/index.js
@@ -5,7 +5,7 @@ import Collapse from './collapse'
 import Dropdown from './dropdown'
 import Modal from './modal'
 import Popover from './popover'
-import Scrollspy from './scrollspy'
+import ScrollSpy from './scrollspy'
 import Tab from './tab'
 import Toast from './toast'
 import Tooltip from './tooltip'
@@ -27,7 +27,7 @@ export {
   Dropdown,
   Modal,
   Popover,
-  Scrollspy,
+  ScrollSpy,
   Tab,
   Toast,
   Tooltip
diff --git a/js/src/modal.js b/js/src/modal.js
index 6da3d25aa8..4f23fff741 100644
--- a/js/src/modal.js
+++ b/js/src/modal.js
@@ -498,6 +498,10 @@ class Modal {
     } else {
       document.body.style.paddingRight = ''
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   _getScrollbarWidth() { // thx d.walsh
diff --git a/js/src/popover.js b/js/src/popover.js
index e7c00a4cd2..b462326190 100644
--- a/js/src/popover.js
+++ b/js/src/popover.js
@@ -165,6 +165,10 @@ class Popover extends Tooltip {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index ea6d528157..458f5170e9 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -308,6 +308,10 @@ class ScrollSpy {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/tab.js b/js/src/tab.js
index 9343413480..121669aad5 100644
--- a/js/src/tab.js
+++ b/js/src/tab.js
@@ -219,6 +219,10 @@ class Tab {
       }
     })
   }
+
+  static _getInstance(element) {
+    return Data.getData(element, DATA_KEY)
+  }
 }
 
 /**
diff --git a/js/src/tooltip.js b/js/src/tooltip.js
index 164f6e990f..9b8b8263a9 100644
--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@@ -741,6 +741,10 @@ class Tooltip {
         .map((token) => token.trim())
         .forEach((tClass) => tip.classList.remove(tClass))
     }
+
+    static _getInstance(element) {
+      return Data.getData(element, DATA_KEY)
+    }
   }
 
   _handlePopperPlacementChange(popperData) {
diff --git a/js/tests/unit/.eslintrc.json b/js/tests/unit/.eslintrc.json
index cb40cd0ab8..726fc25c91 100644
--- a/js/tests/unit/.eslintrc.json
+++ b/js/tests/unit/.eslintrc.json
@@ -14,7 +14,6 @@
     "Simulator": false,
     "Toast": false,
     "EventHandler": false,
-    "Data": false,
     "Manipulator": false
   },
   "parserOptions": {
diff --git a/js/tests/unit/alert.js b/js/tests/unit/alert.js
index 3fe796e28b..d5437a7376 100644
--- a/js/tests/unit/alert.js
+++ b/js/tests/unit/alert.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Alert = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Alert : window.Alert
+
   QUnit.module('alert plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -91,7 +93,7 @@ $(function () {
     var done = assert.async()
     var $el = $('<div/>')
     var $alert = $el.bootstrapAlert()
-    var alertInstance = Data.getData($alert[0], 'bs.alert')
+    var alertInstance = Alert._getInstance($alert[0])
 
     $alert.one('closed.bs.alert', function () {
       assert.ok('alert closed')
@@ -107,11 +109,11 @@ $(function () {
     var $el = $('<div/>')
     var $alert = $el.bootstrapAlert()
 
-    assert.ok(typeof Data.getData($alert[0], 'bs.alert') !== 'undefined')
+    assert.ok(typeof Alert._getInstance($alert[0]) !== 'undefined')
 
-    Data.getData($alert[0], 'bs.alert').dispose()
+    Alert._getInstance($alert[0]).dispose()
 
-    assert.ok(Data.getData($alert[0], 'bs.alert') === null)
+    assert.ok(Alert._getInstance($alert[0]) === null)
   })
 
   QUnit.test('should return alert version', function (assert) {
diff --git a/js/tests/unit/button.js b/js/tests/unit/button.js
index 0fa19d1548..50b531f6f0 100644
--- a/js/tests/unit/button.js
+++ b/js/tests/unit/button.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Button = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Button : window.Button
+
   QUnit.module('button plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -208,11 +210,11 @@ $(function () {
     var $el = $('<div/>')
     var $button = $el.bootstrapButton()
 
-    assert.ok(typeof Data.getData($button[0], 'bs.button') !== 'undefined')
+    assert.ok(typeof Button._getInstance($button[0]) !== 'undefined')
 
-    Data.getData($button[0], 'bs.button').dispose()
+    Button._getInstance($button[0]).dispose()
 
-    assert.ok(Data.getData($button[0], 'bs.button') === null)
+    assert.ok(Button._getInstance($button[0]) === null)
   })
 
   QUnit.test('should return button version', function (assert) {
diff --git a/js/tests/unit/carousel.js b/js/tests/unit/carousel.js
index fd9cf85097..f89dfcf969 100644
--- a/js/tests/unit/carousel.js
+++ b/js/tests/unit/carousel.js
@@ -475,26 +475,26 @@ $(function () {
 
     $carousel.appendTo('body')
     EventHandler.trigger($('[data-slide]').first()[0], 'click')
-    assert.strictEqual(Data.getData($carousel[0], 'bs.carousel')._config.interval, 1814)
+    assert.strictEqual(Carousel._getInstance($carousel[0])._config.interval, 1814)
     $carousel.remove()
 
     $carousel.appendTo('body').attr('data-modal', 'foobar')
     EventHandler.trigger($('[data-slide]').first()[0], 'click')
-    assert.strictEqual(Data.getData($carousel[0], 'bs.carousel')._config.interval, 1814, 'even if there is an data-modal attribute set')
+    assert.strictEqual(Carousel._getInstance($carousel[0])._config.interval, 1814, 'even if there is an data-modal attribute set')
     $carousel.remove()
 
     $carousel.appendTo('body')
     EventHandler.trigger($('[data-slide]').first()[0], 'click')
     $carousel.attr('data-interval', 1860)
     EventHandler.trigger($('[data-slide]').first()[0], 'click')
-    assert.strictEqual(Data.getData($carousel[0], 'bs.carousel')._config.interval, 1814, 'attributes should be read only on initialization')
+    assert.strictEqual(Carousel._getInstance($carousel[0])._config.interval, 1814, 'attributes should be read only on initialization')
     $carousel.bootstrapCarousel('dispose')
     $carousel.remove()
 
     $carousel.attr('data-interval', false)
     $carousel.appendTo('body')
     $carousel.bootstrapCarousel(1)
-    assert.strictEqual(Data.getData($carousel[0], 'bs.carousel')._config.interval, false, 'data attribute has higher priority than default options')
+    assert.strictEqual(Carousel._getInstance($carousel[0])._config.interval, false, 'data attribute has higher priority than default options')
     $carousel.remove()
   })
 
diff --git a/js/tests/unit/collapse.js b/js/tests/unit/collapse.js
index 8dccf5c18e..66cf6af961 100644
--- a/js/tests/unit/collapse.js
+++ b/js/tests/unit/collapse.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Collapse = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Collapse : window.Collapse
+
   QUnit.module('collapse plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -473,7 +475,7 @@ $(function () {
     EventHandler.trigger($target2[0], 'click')
 
     $body2.toggleClass('show collapsing')
-    Data.getData($body2[0], 'bs.collapse')._isTransitioning = true
+    Collapse._getInstance($body2[0])._isTransitioning = true
 
     EventHandler.trigger($target1[0], 'click')
 
diff --git a/js/tests/unit/dropdown.js b/js/tests/unit/dropdown.js
index c94b8a4410..c89d5abb29 100644
--- a/js/tests/unit/dropdown.js
+++ b/js/tests/unit/dropdown.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Dropdown = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Dropdown : window.Dropdown
+
   QUnit.module('dropdowns plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -1025,7 +1027,7 @@ $(function () {
       .find('[data-toggle="dropdown"]')
       .bootstrapDropdown()
 
-    var dropdown = Data.getData($dropdown[0], 'bs.dropdown')
+    var dropdown = Dropdown._getInstance($dropdown[0])
     dropdown.toggle()
     assert.ok(dropdown._popper)
 
@@ -1053,7 +1055,7 @@ $(function () {
       .find('[data-toggle="dropdown"]')
       .bootstrapDropdown()
 
-    var dropdown = Data.getData($dropdown[0], 'bs.dropdown')
+    var dropdown = Dropdown._getInstance($dropdown[0])
     var spyDetectNavbar = sinon.spy(dropdown, '_detectNavbar')
 
     dropdown.update()
@@ -1078,7 +1080,7 @@ $(function () {
       .find('[data-toggle="dropdown"]')
       .bootstrapDropdown()
 
-    var dropdown = Data.getData($dropdown[0], 'bs.dropdown')
+    var dropdown = Dropdown._getInstance($dropdown[0])
     dropdown.toggle()
 
     assert.ok(dropdown._popper)
@@ -1109,7 +1111,7 @@ $(function () {
       .find('[data-toggle="dropdown"]')
       .bootstrapDropdown()
 
-    var dropdown = Data.getData($dropdown[0], 'bs.dropdown')
+    var dropdown = Dropdown._getInstance($dropdown[0])
 
     assert.notOk(dropdown._popper)
     assert.ok(dropdown._menu !== null)
diff --git a/js/tests/unit/popover.js b/js/tests/unit/popover.js
index 0dd9c98e39..023db67530 100644
--- a/js/tests/unit/popover.js
+++ b/js/tests/unit/popover.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Popover = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Popover : window.Popover
+
   QUnit.module('popover plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -65,7 +67,7 @@ $(function () {
     assert.expect(1)
     var $popover = $('<a href="#" title="mdo" data-content="https://twitter.com/mdo">@mdo</a>').bootstrapPopover()
 
-    assert.ok(Data.getData($popover[0], 'bs.popover'), 'popover instance exists')
+    assert.ok(Popover._getInstance($popover[0]), 'popover instance exists')
   })
 
   QUnit.test('should store popover trigger in popover instance data object', function (assert) {
@@ -76,7 +78,7 @@ $(function () {
 
     $popover.bootstrapPopover('show')
 
-    assert.ok(Data.getData($('.popover')[0], 'bs.popover'), 'popover trigger stored in instance data')
+    assert.ok(Popover._getInstance($('.popover')[0]), 'popover trigger stored in instance data')
   })
 
   QUnit.test('should get title and content from options', function (assert) {
@@ -259,13 +261,13 @@ $(function () {
       })
       .on('click.foo', $.noop)
 
-    assert.ok(Data.getData($popover[0], 'bs.popover'), 'popover has data')
+    assert.ok(Popover._getInstance($popover[0]), 'popover has data')
 
     $popover.bootstrapPopover('show')
     $popover.bootstrapPopover('dispose')
 
     assert.ok(!$popover.hasClass('show'), 'popover is hidden')
-    assert.ok(!$popover.data('popover'), 'popover does not have data')
+    assert.ok(!Popover._getInstance($popover[0]), 'popover does not have data')
   })
 
   QUnit.test('should render popover element using delegated selector', function (assert) {
@@ -338,7 +340,7 @@ $(function () {
         assert.ok(false, 'should not fire any popover events')
       })
       .bootstrapPopover('hide')
-    assert.ok(Data.getData($popover[0], 'bs.popover') === null, 'should not initialize the popover')
+    assert.ok(Popover._getInstance($popover[0]) === null, 'should not initialize the popover')
   })
 
   QUnit.test('should fire inserted event', function (assert) {
diff --git a/js/tests/unit/scrollspy.js b/js/tests/unit/scrollspy.js
index 7470a94c2d..27f899576a 100644
--- a/js/tests/unit/scrollspy.js
+++ b/js/tests/unit/scrollspy.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var ScrollSpy = typeof window.bootstrap !== 'undefined' ? window.bootstrap.ScrollSpy : window.ScrollSpy
+
   QUnit.module('scrollspy plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -667,7 +669,7 @@ $(function () {
       }
 
       var $target = $('#div-' + type + 'm-2')
-      var scrollspy = Data.getData($content[0], 'bs.scrollspy')
+      var scrollspy = ScrollSpy._getInstance($content[0])
 
       assert.ok(scrollspy._offsets[1] === $target.offset().top, 'offset method with ' + type + ' option')
       assert.ok(scrollspy._offsets[1] !== $target.position().top, 'position method with ' + type + ' option')
@@ -714,7 +716,7 @@ $(function () {
       }
 
       var $target = $('#div-' + type + 'm-2')
-      var scrollspy = Data.getData($content[0], 'bs.scrollspy')
+      var scrollspy = ScrollSpy._getInstance($content[0])
 
       assert.ok(scrollspy._offsets[1] !== $target.offset().top, 'offset method with ' + type + ' option')
       assert.ok(scrollspy._offsets[1] === $target.position().top, 'position method with ' + type + ' option')
diff --git a/js/tests/unit/tooltip.js b/js/tests/unit/tooltip.js
index 081cbb1099..8c6d604b76 100644
--- a/js/tests/unit/tooltip.js
+++ b/js/tests/unit/tooltip.js
@@ -1,6 +1,8 @@
 $(function () {
   'use strict'
 
+  var Tooltip = typeof window.bootstrap !== 'undefined' ? window.bootstrap.Tooltip : window.Tooltip
+
   QUnit.module('tooltip plugin')
 
   QUnit.test('should be defined on jquery object', function (assert) {
@@ -122,7 +124,7 @@ $(function () {
         $tooltip.bootstrapTooltip('hide')
       })
       .one('hidden.bs.tooltip', function () {
-        assert.strictEqual(Data.getData($tooltip[0], 'bs.tooltip').tip.parentNode, null, 'tooltip removed')
+        assert.strictEqual(Tooltip._getInstance($tooltip[0]).tip.parentNode, null, 'tooltip removed')
         done()
       })
       .bootstrapTooltip('show')
@@ -143,7 +145,7 @@ $(function () {
         $tooltip.bootstrapTooltip('hide')
       })
       .one('hidden.bs.tooltip', function () {
-        assert.strictEqual(Data.getData($tooltip[0], 'bs.tooltip').tip.parentNode, null, 'tooltip removed')
+        assert.strictEqual(Tooltip._getInstance($tooltip[0]).tip.parentNode, null, 'tooltip removed')
         done()
       })
       .bootstrapTooltip('show')
@@ -205,7 +207,7 @@ $(function () {
         $tooltip.bootstrapTooltip('hide')
       })
       .one('hidden.bs.tooltip', function () {
-        assert.strictEqual(Data.getData($tooltip[0], 'bs.tooltip').tip.parentNode, null, 'tooltip removed')
+        assert.strictEqual(Tooltip._getInstance($tooltip[0]).tip.parentNode, null, 'tooltip removed')
         done()
       })
       .bootstrapTooltip('show')
@@ -336,13 +338,13 @@ $(function () {
       .bootstrapTooltip()
       .on('click.foo', function () {})  // eslint-disable-line no-empty-function
 
-    assert.ok(Data.getData($tooltip[0], 'bs.tooltip'), 'tooltip has data')
+    assert.ok(Tooltip._getInstance($tooltip[0]), 'tooltip has data')
 
     $tooltip.bootstrapTooltip('show')
     $tooltip.bootstrapTooltip('dispose')
 
     assert.ok(!$tooltip.hasClass('show'), 'tooltip is hidden')
-    assert.ok(!Data.getData($tooltip[0], 'bs.tooltip'), 'tooltip does not have data')
+    assert.ok(!Tooltip._getInstance($tooltip[0]), 'tooltip does not have data')
   })
 
   // QUnit.test('should show tooltip with delegate selector on click', function (assert) {
@@ -471,7 +473,7 @@ $(function () {
         trigger: 'manual'
       })
       .on('inserted.bs.tooltip', function () {
-        var $tooltip = $(Data.getData(this, 'bs.tooltip').tip)
+        var $tooltip = $(Tooltip._getInstance(this).tip)
         assert.ok($tooltip.hasClass('bs-tooltip-right'))
         assert.ok(typeof $tooltip.attr('style') === 'undefined')
         $styles.remove()
@@ -701,16 +703,16 @@ $(function () {
       })
 
     setTimeout(function () {
-      assert.ok($(Data.getData($tooltip[0], 'bs.tooltip').tip).is('.fade.show'), '1ms: tooltip faded active')
+      assert.ok($(Tooltip._getInstance($tooltip[0]).tip).is('.fade.show'), '1ms: tooltip faded active')
 
       EventHandler.trigger($tooltip[0], 'mouseout')
 
       setTimeout(function () {
-        assert.ok($(Data.getData($tooltip[0], 'bs.tooltip').tip).is('.fade.show'), '100ms: tooltip still faded active')
+        assert.ok($(Tooltip._getInstance($tooltip[0]).tip).is('.fade.show'), '100ms: tooltip still faded active')
       }, 100)
 
       setTimeout(function () {
-        assert.ok(!$(Data.getData($tooltip[0], 'bs.tooltip').tip).is('.show'), '200ms: tooltip removed')
+        assert.ok(!$(Tooltip._getInstance($tooltip[0]).tip).is('.show'), '200ms: tooltip removed')
         done()
       }, 200)
     }, 0)
@@ -770,7 +772,7 @@ $(function () {
       title: titleHtml
     })
 
-    var obj = Data.getData($tooltip[0], 'bs.tooltip')
+    var obj = Tooltip._getInstance($tooltip[0])
 
     EventHandler.trigger($('#tt-outer')[0], 'mouseover')
 
@@ -796,7 +798,7 @@ $(function () {
         assert.ok(false, 'should not fire any tooltip events')
       })
       .bootstrapTooltip('hide')
-    assert.ok(Data.getData($tooltip[0], 'bs.tooltip') === null, 'should not initialize the tooltip')
+    assert.ok(Tooltip._getInstance($tooltip[0]) === null, 'should not initialize the tooltip')
   })
 
   QUnit.test('should not remove tooltip if multiple triggers are set and one is still active', function (assert) {
@@ -808,7 +810,7 @@ $(function () {
         animation: false
       })
 
-    var tooltip = Data.getData($el[0], 'bs.tooltip')
+    var tooltip = Tooltip._getInstance($el[0])
     var $tooltip = $(tooltip.getTipElement())
 
     function showingTooltip() {
@@ -852,7 +854,7 @@ $(function () {
         animation: false
       })
 
-    var tooltip = Data.getData($el[0], 'bs.tooltip')
+    var tooltip = Tooltip._getInstance($el[0])
     var $tooltip = $(tooltip.getTipElement())
 
     function showingTooltip() {
@@ -947,7 +949,7 @@ $(function () {
       .appendTo('#qunit-fixture')
       .bootstrapTooltip('show')
       .on('hidden.bs.tooltip', function () {
-        var tooltip = Data.getData($el[0], 'bs.tooltip')
+        var tooltip = Tooltip._getInstance($el[0])
         var $tooltip = $(tooltip.getTipElement())
         assert.ok($tooltip.hasClass('tooltip'))
         assert.ok($tooltip.hasClass('fade'))
@@ -963,7 +965,7 @@ $(function () {
     var $el = $('<a href="#" rel="tooltip" title="7"/>')
       .appendTo('#qunit-fixture')
       .on('shown.bs.tooltip', function () {
-        var tooltip = Data.getData($el[0], 'bs.tooltip')
+        var tooltip = Tooltip._getInstance($el[0])
         var $tooltip = $(tooltip.getTipElement())
         assert.strictEqual($tooltip.children().text(), '7')
         done()
@@ -1000,7 +1002,7 @@ $(function () {
       .appendTo('#qunit-fixture')
       .bootstrapTooltip()
 
-    var tooltip = Data.getData($tooltip[0], 'bs.tooltip')
+    var tooltip = Tooltip._getInstance($tooltip[0])
     tooltip.show()
     assert.ok(tooltip._popper)
 
@@ -1016,7 +1018,7 @@ $(function () {
       .appendTo('#qunit-fixture')
       .bootstrapTooltip()
 
-    var tooltip = Data.getData($tooltip[0], 'bs.tooltip')
+    var tooltip = Tooltip._getInstance($tooltip[0])
     tooltip.update()
 
     assert.ok(tooltip._popper === null)