requirejs-config.js

/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

var config = {
    map: {
        '*': {
            downloadable: 'Magento_Downloadable/js/downloadable',
            'Magento_Downloadable/downloadable': 'Magento_Downloadable/js/downloadable'
        }
    }
};