gulp-usemin-extend/test/fixtures/conditional-js.html

Replaces references to non-optimized scripts or stylesheets into a set of HTML files (or any templates/views).

<!-- build:js app.js -->
<!--[if lt IE 9]>
<script src="js/lib.js"></script>
<script src="js/main.js"></script>
<![endif]-->
<!-- endbuild -->