Store packages in array instead of a hash by name

spec/app/root-view-spec.coffee

@@ -155,12 +155,14 @@ describe "RootView", ->
     it "absorbs exceptions that are thrown by the package module's serialize methods", ->
       spyOn(console, 'error')
 
-      rootView.activatePackage "bad-egg",
+      rootView.activatePackage "REMOVE THIS",
+        name: "bad-egg"
         packageMain:
           activate: ->
           serialize: -> throw new Error("I'm broken")
 
-      rootView.activatePackage "good-egg"
+      rootView.activatePackage "REMOVE THIS",
+        name: "good-egg"
         packageMain:
           activate: ->
           serialize: -> "I still get called"
@@ -423,6 +425,7 @@ describe "RootView", ->
 
     beforeEach ->
       pack =
+        name: "package"
         packageMain:
           configDefaults: foo: { bar: 2, baz: 3 }
           activate: jasmine.createSpy("activate")
@@ -433,33 +436,30 @@ describe "RootView", ->
 
     describe ".activatePackage(name, package)", ->
       it "calls activate on the package", ->
-        rootView.activatePackage('package', pack)
+        rootView.activatePackage('REMOVE ME', pack)
         expect(packageModule.activate).toHaveBeenCalledWith(undefined)
 
       it "calls activate on the package module with its previous state", ->
-        rootView.activatePackage('package', pack)
+        rootView.activatePackage('REMOVE ME', pack)
         packageModule.activate.reset()
 
         newRootView = RootView.deserialize(rootView.serialize())
-        newRootView.activatePackage('package', pack)
+        newRootView.activatePackage('REMOVE ME', pack)
         expect(packageModule.activate).toHaveBeenCalledWith("it worked")
         newRootView.remove()
 
     describe ".deactivatePackage(packageName)", ->
       it "deactivates and removes the package module from the package module map", ->
-        rootView.activatePackage('package', pack)
-        expect(rootView.packages['package']).toBeTruthy()
+        rootView.activatePackage('REMOVE ME', pack)
         spyOn(packageModule, "deactivate").andCallThrough()
-        rootView.deactivatePackage('package')
+        rootView.deactivatePackages()
         expect(packageModule.deactivate).toHaveBeenCalled()
-        expect(rootView.packages['package']).toBeFalsy()
+        expect(rootView.packages.length).toBe 0
 
       it "is called when the rootView is deactivated to deactivate all packages", ->
         rootView.activatePackage('package', pack)
-        spyOn(rootView, "deactivatePackage").andCallThrough()
         spyOn(packageModule, "deactivate").andCallThrough()
         rootView.deactivate()
-        expect(rootView.deactivatePackage).toHaveBeenCalled()
         expect(packageModule.deactivate).toHaveBeenCalled()
 
   describe "keymap wiring", ->

src/app/root-view.coffee

@@ -41,7 +41,7 @@ class RootView extends View
   initialize: (projectOrPathToOpen, { @packageStates, suppressOpen } = {}) ->
     window.rootView = this
     @packageStates ?= {}
-    @packages = {}
+    @packages = []
     @viewClasses = {
       "Pane": Pane,
       "PaneRow": PaneRow,
@@ -126,7 +126,7 @@ class RootView extends View
 
   deactivate: ->
     atom.setRootViewStateForPath(@project.getPath(), @serialize())
-    @deactivatePackage(name) for name of @packages
+    @deactivatePackages()
     @remove()
 
   open: (path, options = {}) ->
@@ -263,18 +263,18 @@ class RootView extends View
     @project.eachBuffer(callback)
 
   activatePackage: (name, pack) ->
-    @packages[name] = pack
-    pack.packageMain.activate(@packageStates[name])
+    @packages.push(pack)
+    pack.packageMain.activate(@packageStates[pack.name])
 
-  deactivatePackage: (name) ->
-    @packages[name].packageMain.deactivate?()
-    delete @packages[name]
+  deactivatePackages: ->
+    pack.packageMain.deactivate?() for pack in @packages
+    @packages = []
 
   serializePackages:  ->
     packageStates = {}
-    for name, pack of @packages
+    for pack in @packages
       try
-        packageStates[name] = pack.packageMain.serialize?()
+        packageStates[pack.name] = pack.packageMain.serialize?()
       catch e
         console?.error("Exception serializing '#{name}' package's module\n", e.stack)
     packageStates