Add deprecation for Discourse.PageTracker

app/assets/javascripts/discourse.js

@@ -140,3 +140,18 @@ window.Discourse = Ember.Application.createWithMixins(Discourse.Ajax, {
 
 // TODO: Remove this, it is in for backwards compatibiltiy with plugins
 Discourse.HasCurrentUser = {};
+
+function proxyDep(propName, moduleFunc, msg) {
+  if (Discourse.hasOwnProperty(propName)) { return; }
+  Object.defineProperty(Discourse, propName, {
+    get: function() {
+      msg = msg || "import the module";
+      Ember.warn("DEPRECATION: `Discourse." + propName + "` is deprecated, " + msg + ".");
+      return moduleFunc();
+    }
+  });
+}
+
+proxyDep('computed', function() { return require('discourse/lib/computed') });
+proxyDep('Formatter', function() { return require('discourse/lib/formatter') });
+proxyDep('PageTracker', function() { return require('discourse/lib/page-tracker').default });

app/assets/javascripts/discourse/initializers/load-all-helpers.js.es6

@@ -7,28 +7,5 @@ export default {
         require(entry, null, null, true);
       }
     });
-
-    // TODO: Once things have migrated remove these
-    if (!Discourse.hasOwnProperty('computed')) {
-      const computed = require('discourse/lib/computed');
-      Object.defineProperty(Discourse, 'computed', {
-        get: function() {
-          Ember.warn('DEPRECATION: `Discourse.computed` is deprecated, import the functions as needed.');
-          return computed;
-        }
-      });
-    }
-
-    if (!Discourse.hasOwnProperty('Formatter')) {
-      const Formatter = require('discourse/lib/formatter');
-      Object.defineProperty(Discourse, 'Formatter', {
-        get: function() {
-          Ember.warn('DEPRECATION: `Discourse.Formatter` is deprecated, import the formatters as needed.');
-          return Formatter;
-        }
-      });
-    }
-
-
   }
 };