By the way I have successfully added json file under content/dam. I uploaded json file as asset to dam and added /jcr:content/renditions/original to the file path, for example: /content/dam/my-project/metadata-dropdown-products.json/jcr:content/renditions/original

  Hello, I need to validate json/yaml files prior to loading it to the assets in AEM 6.5, if the file is not valid than show an error to the author, if it is valid than just upload it. Right now I am trying to overlay and customize the upload.js file which is meant for handle the "Upload" button, if...