diff --git a/assets/javascripts/discourse/components/custom-wizard-composer-editor.js.es6 b/assets/javascripts/discourse/components/custom-wizard-composer-editor.js.es6
index d9fec6cd..5335da81 100644
--- a/assets/javascripts/discourse/components/custom-wizard-composer-editor.js.es6
+++ b/assets/javascripts/discourse/components/custom-wizard-composer-editor.js.es6
@@ -79,9 +79,11 @@ export default ComposerEditor.extend({
     this._bindUploadTarget();
 
     const field = this.field;
-    this.editorInputClass = `.${dasherize(field.type)}-${dasherize(field.id)} .d-editor-input`;
+    this.editorInputClass = `.${dasherize(field.type)}-${dasherize(
+      field.id
+    )} .d-editor-input`;
 
-    this._uppyInstance.on('file-added', (file) => {
+    this._uppyInstance.on("file-added", () => {
       this.session.set("wizardEventFieldId", field.id);
     });
   },
diff --git a/assets/javascripts/discourse/mixins/undo-changes.js.es6 b/assets/javascripts/discourse/mixins/undo-changes.js.es6
index 91497eae..ce126bdd 100644
--- a/assets/javascripts/discourse/mixins/undo-changes.js.es6
+++ b/assets/javascripts/discourse/mixins/undo-changes.js.es6
@@ -4,7 +4,7 @@ import { get, set } from "@ember/object";
 import Mixin from "@ember/object/mixin";
 import { deepEqual } from "discourse-common/lib/object";
 
-var observedCache = [];
+let observedCache = [];
 
 export default Mixin.create({
   didInsertElement() {
@@ -36,7 +36,7 @@ export default Mixin.create({
     listProperties(componentType, opts).forEach((property) => {
       if (observedCache.includes(property)) {
         obj.removeObserver(property, this, this.toggleUndo);
-        observedCache = observedCache.filter(p => p !== property);
+        observedCache = observedCache.filter((p) => p !== property);
       }
     });
   },