Migrate `discourse-common` from es6 -> js

app/assets/javascripts/discourse-common/lib/get-owner.js

@@ -1,8 +1,9 @@
 import deprecated from "discourse-common/lib/deprecated";
+import { getOwner as emberGetOwner } from "@ember/application";
 
 export function getOwner(obj) {
-  if (Ember.getOwner) {
-    return Ember.getOwner(obj) || Discourse.__container__;
+  if (emberGetOwner) {
+    return emberGetOwner(obj) || Discourse.__container__;
   }
 
   return obj.container;

app/assets/javascripts/discourse-common/utils/decorators.js

@@ -41,6 +41,7 @@ export function readOnly(target, name, desc) {
 
 import decoratorAlias from "ember-addons/decorator-alias";
 
+/* eslint-disable */
 export var on = decoratorAlias(Ember.on, "Can not `on` without event names");
 export var observes = decoratorAlias(
   Ember.observer,

lib/discourse_js_processor.rb

@@ -40,7 +40,8 @@ class DiscourseJsProcessor
       relative_path.start_with?("app/assets/javascripts/admin/") ||
       relative_path.start_with?("app/assets/javascripts/pretty-text/") ||
       relative_path.start_with?("app/assets/javascripts/select-kit/") ||
-      relative_path.start_with?("app/assets/javascripts/wizard/")
+      relative_path.start_with?("app/assets/javascripts/wizard/") ||
+      relative_path.start_with?("app/assets/javascripts/discourse-common/")
   end
 
   def self.skip_module?(data)

lib/freedom_patches/raw_handlebars.rb

@@ -11,7 +11,7 @@ class Barber::Precompiler
   def precompiler
     if !@precompiler
 
-      source = File.read("#{Rails.root}/app/assets/javascripts/discourse-common/lib/raw-handlebars.js.es6")
+      source = File.read("#{Rails.root}/app/assets/javascripts/discourse-common/lib/raw-handlebars.js")
       transpiler = DiscourseJsProcessor::Transpiler.new(skip_module: true)
       transpiled = transpiler.perform(source)