I'm migrating to Bootstrap 5.0.2 and cleaning up the bundling for optimization. With deprecated support for various older browser versions and the fact that Modernizr.js hasn't been updated since 2017, is this line even still necessary?
@Scripts.RenderFormat("<script type=\"text/javascript\" src=\"{0}\" async></script>", "~/bundles/modernizr")
There is browsers that does not support all HTML5 and CSS3 features. Also more than users, Older versions of a browser are still in use, To display your website properly in users' old browsers, should of Modernizr.js use