已解决

我将此代码添加到require('bootstrap');

 require( '../../node_modules/datatables.net/js/jquery.dataTables.js' );
 require( '../../node_modules/datatables.net-bs4/js/dataTables.bootstrap4.js' );

，然后将样式添加到我的app.scss

and then added styles to my app.scss

@import '~datatables.net-bs4/css/dataTables.bootstrap4.css';

现在一切正常. 希望对别人有帮助.

Everything works perfectly now. Hope it help others.