Conditionally include deprecations in Package

src/package.coffee

@@ -4,10 +4,9 @@ _ = require 'underscore-plus'
 async = require 'async'
 CSON = require 'season'
 fs = require 'fs-plus'
-EmitterMixin = require('emissary').Emitter
 {Emitter, CompositeDisposable} = require 'event-kit'
 Q = require 'q'
-{deprecate} = require 'grim'
+{includeDeprecations, deprecate} = require 'grim'
 
 ModuleCache = require './module-cache'
 ScopedProperties = require './scoped-properties'
@@ -21,8 +20,6 @@ catch error
 # stylesheets, keymaps, grammar, editor properties, and menus.
 module.exports =
 class Package
-  EmitterMixin.includeInto(this)
-
   @isBundledPackagePath: (packagePath) ->
     if atom.packages.devMode
       return false unless atom.packages.resourcePath.startsWith("#{process.resourcesPath}#{path.sep}")
@@ -43,11 +40,11 @@ class Package
     metadata ?= {}
     metadata.name = packageName
 
-    if metadata.stylesheetMain?
+    if includeDeprecations and metadata.stylesheetMain?
       deprecate("Use the `mainStyleSheet` key instead of `stylesheetMain` in the `package.json` of `#{packageName}`", {packageName})
       metadata.mainStyleSheet = metadata.stylesheetMain
 
-    if metadata.stylesheets?
+    if includeDeprecations and metadata.stylesheets?
       deprecate("Use the `styleSheets` key instead of `stylesheets` in the `package.json` of `#{packageName}`", {packageName})
       metadata.styleSheets = metadata.stylesheets
 
@@ -87,14 +84,6 @@ class Package
   onDidDeactivate: (callback) ->
     @emitter.on 'did-deactivate', callback
 
-  on: (eventName) ->
-    switch eventName
-      when 'deactivated'
-        deprecate 'Use Package::onDidDeactivate instead'
-      else
-        deprecate 'Package::on is deprecated. Use event subscription methods instead.'
-    EmitterMixin::on.apply(this, arguments)
-
   ###
   Section: Instance Methods
   ###
@@ -174,7 +163,7 @@ class Package
     if @mainModule?
       if @mainModule.config? and typeof @mainModule.config is 'object'
         atom.config.setSchema @name, {type: 'object', properties: @mainModule.config}
-      else if @mainModule.configDefaults? and typeof @mainModule.configDefaults is 'object'
+      else if includeDeprecations and @mainModule.configDefaults? and typeof @mainModule.configDefaults is 'object'
         deprecate """Use a config schema instead. See the configuration section
         of https://atom.io/docs/latest/hacking-atom-package-word-count and
         https://atom.io/docs/api/latest/Config for more details"""
@@ -268,7 +257,7 @@ class Package
       [stylesheetPath, atom.themes.loadStylesheet(stylesheetPath, true)]
 
   getStylesheetsPath: ->
-    if fs.isDirectorySync(path.join(@path, 'stylesheets'))
+    if includeDeprecations and fs.isDirectorySync(path.join(@path, 'stylesheets'))
       deprecate("Store package style sheets in the `styles/` directory instead of `stylesheets/` in the `#{@name}` package", packageName: @name)
       path.join(@path, 'stylesheets')
     else
@@ -339,7 +328,7 @@ class Package
 
     deferred = Q.defer()
 
-    if fs.isDirectorySync(path.join(@path, 'scoped-properties'))
+    if includeDeprecations and fs.isDirectorySync(path.join(@path, 'scoped-properties'))
       settingsDirPath = path.join(@path, 'scoped-properties')
       deprecate("Store package settings files in the `settings/` directory instead of `scoped-properties/`", packageName: @name)
     else
@@ -467,7 +456,7 @@ class Package
         else if _.isArray(commands)
           @activationCommands[selector].push(commands...)
 
-    if @metadata.activationEvents?
+    if includeDeprecations and @metadata.activationEvents?
       deprecate """
         Use `activationCommands` instead of `activationEvents` in your package.json
         Commands should be grouped by selector as follows:
@@ -585,3 +574,15 @@ class Package
       stack = error.stack ? error
 
     atom.notifications.addFatalError(message, {stack, detail, dismissable: true})
+
+if includeDeprecations
+  EmitterMixin = require('emissary').Emitter
+  EmitterMixin.includeInto(Package)
+
+  Package::on = (eventName) ->
+    switch eventName
+      when 'deactivated'
+        deprecate 'Use Package::onDidDeactivate instead'
+      else
+        deprecate 'Package::on is deprecated. Use event subscription methods instead.'
+    EmitterMixin::on.apply(this, arguments)