MC-5691: Implement better developer error reporting

- Remove yarn-error.log
- Update comments

Author: davemacaulay

.gitignore

@@ -6,4 +6,5 @@
 static-error-log.xml
 .DS_Store
 .vscode
-.history/
+.history/
+/yarn-error.log

app/code/Magento/PageBuilder/view/adminhtml/web/js/master-format/read/configurable.js

@@ -98,11 +98,12 @@ export default class Configurable implements ReadInterface {
      * @returns {HTMLElement}
      */
     private findElementByName(element: HTMLElement, name: string): HTMLElement {
+        // Create a clone of the element to avoid modifying the source
         const currentElement = $(element).clone();
         // Remove all child instances of data-role elements
         currentElement.find(`[${Config.getConfig("dataRoleAttributeName")}]`).remove();
 
-        // Find the element in the modified close with a matching element name
+        // Attempt to find the content type element within the modified clone element
         return currentElement.attr("data-element") === name
             ? currentElement[0]
             : currentElement[0].querySelector<HTMLElement>(`[data-element=${name}]`);