Rename AtomPackage.packageMain to .mainModule

src/app/atom-package.coffee

@@ -6,7 +6,7 @@ $ = require 'jquery'
 module.exports =
 class AtomPackage extends Package
   metadata: null
-  packageMain: null
+  mainModule: null
   deferActivation: false
 
   load: ->
@@ -48,17 +48,17 @@ class AtomPackage extends Package
     else
       try
         if @requirePackageMain()
-          config.setDefaults(@name, @packageMain.configDefaults)
+          config.setDefaults(@name, @mainModule.configDefaults)
           atom.activateAtomPackage(this)
       catch e
         console.warn "Failed to activate package named '#{@name}'", e.stack
 
   requirePackageMain: ->
-    return @packageMain if @packageMain
+    return @mainModule if @mainModule
     mainPath = @path
     mainPath = fs.join(mainPath, @metadata.main) if @metadata.main
     mainPath = require.resolve(mainPath)
-    @packageMain = require(mainPath) if fs.isFile(mainPath)
+    @mainModule = require(mainPath) if fs.isFile(mainPath)
 
   registerDeferredDeserializers: ->
     for deserializerName in @metadata.deferredDeserializers ? []

src/app/atom.coffee

@@ -24,10 +24,10 @@ _.extend atom,
 
   activateAtomPackage: (pack) ->
     @activatedAtomPackages.push(pack)
-    pack.packageMain.activate(@atomPackageStates[pack.name] ? {})
+    pack.mainModule.activate(@atomPackageStates[pack.name] ? {})
 
   deactivateAtomPackages: ->
-    pack.packageMain.deactivate?() for pack in @activatedAtomPackages
+    pack.mainModule.deactivate?() for pack in @activatedAtomPackages
     @activatedAtomPackages = []
 
   serializeAtomPackages: ->
@@ -35,7 +35,7 @@ _.extend atom,
     for pack in @loadedPackages
       if pack in @activatedAtomPackages
         try
-          packageStates[pack.name] = pack.packageMain.serialize?()
+          packageStates[pack.name] = pack.mainModule.serialize?()
         catch e
           console?.error("Exception serializing '#{pack.name}' package's module\n", e.stack)
       else