diff --git a/spec/notification-manager-spec.coffee b/spec/notification-manager-spec.coffee
deleted file mode 100644
index dfc16322c..000000000
--- a/spec/notification-manager-spec.coffee
+++ /dev/null
@@ -1,57 +0,0 @@
-NotificationManager = require '../src/notification-manager'
-
-describe "NotificationManager", ->
-  [manager] = []
-
-  beforeEach ->
-    manager = new NotificationManager
-
-  describe "the atom global", ->
-    it "has a notifications instance", ->
-      expect(atom.notifications instanceof NotificationManager).toBe true
-
-  describe "adding events", ->
-    addSpy = null
-
-    beforeEach ->
-      addSpy = jasmine.createSpy()
-      manager.onDidAddNotification(addSpy)
-
-    it "emits an event when a notification has been added", ->
-      manager.add('error', 'Some error!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'error'
-      expect(notification.getMessage()).toBe 'Some error!'
-      expect(notification.getIcon()).toBe 'someIcon'
-
-    it "emits a fatal error ::addFatalError has been called", ->
-      manager.addFatalError('Some error!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'fatal'
-
-    it "emits an error ::addError has been called", ->
-      manager.addError('Some error!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'error'
-
-    it "emits a warning notification ::addWarning has been called", ->
-      manager.addWarning('Something!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'warning'
-
-    it "emits an info notification ::addInfo has been called", ->
-      manager.addInfo('Something!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'info'
-
-    it "emits a success notification ::addSuccess has been called", ->
-      manager.addSuccess('Something!', icon: 'someIcon')
-      expect(addSpy).toHaveBeenCalled()
-      notification = addSpy.mostRecentCall.args[0]
-      expect(notification.getType()).toBe 'success'
diff --git a/spec/notification-manager-spec.js b/spec/notification-manager-spec.js
new file mode 100644
index 000000000..3f6a20b67
--- /dev/null
+++ b/spec/notification-manager-spec.js
@@ -0,0 +1,69 @@
+const NotificationManager = require('../src/notification-manager')
+
+describe('NotificationManager', () => {
+  let manager
+
+  beforeEach(() => {
+    manager = new NotificationManager()
+  })
+
+  describe('the atom global', () =>
+    it('has a notifications instance', () => {
+      expect(atom.notifications instanceof NotificationManager).toBe(true)
+    })
+  )
+
+  describe('adding events', () => {
+    let addSpy
+
+    beforeEach(() => {
+      addSpy = jasmine.createSpy()
+      manager.onDidAddNotification(addSpy)
+    })
+
+    it('emits an event when a notification has been added', () => {
+      manager.add('error', 'Some error!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('error')
+      expect(notification.getMessage()).toBe('Some error!')
+      expect(notification.getIcon()).toBe('someIcon')
+    })
+
+    it('emits a fatal error when ::addFatalError has been called', () => {
+      manager.addFatalError('Some error!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('fatal')
+    })
+
+    it('emits an error when ::addError has been called', () => {
+      manager.addError('Some error!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('error')
+    })
+
+    it('emits a warning notification when ::addWarning has been called', () => {
+      manager.addWarning('Something!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('warning')
+    })
+
+    it('emits an info notification when ::addInfo has been called', () => {
+      manager.addInfo('Something!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('info')
+    })
+
+    it('emits a success notification when ::addSuccess has been called', () => {
+      manager.addSuccess('Something!', {icon: 'someIcon'})
+      expect(addSpy).toHaveBeenCalled()
+      const notification = addSpy.mostRecentCall.args[0]
+      expect(notification.getType()).toBe('success')
+    })
+  })
+})