How do I override admin JavaScript
To override a delivered or out-of-box JS file for the admin, you would need to copy it to your admin project and place it in a matching directory structure (i.e., it needs to have the same classpath).
For example, if you want to modify something in {blc}/resources/open_admin_style/js/admin/components/entityForm.js
, you would create a file with the same name at the following location: {your_app}/admin/src/main/resources/open_admin_style/js/admin/components/entityForm.js
.