popper.js in bootstrap 4 gives SyntaxError Unexpected token export

Question

I tried install bootstrap 4, and included following links

<script src="libs/jquery/dist/jquery.min.js"></script>
<script src="libs/tether/dist/js/tether.min.js" ></script>
<script src="libs/popper.js/dist/popper.js"></script>
<script src="libs/bootstrap/dist/js/bootstrap.min.js" ></script>

But The following error occurs :

Uncaught syntaxError: Unexpected token export

Any ideas how to fix it?

Answer 1

Just got this too and figured why it really happens. In case others get by here:

Check the readme.md "Usage". The lib is available in three version for three difference module loaders. In short: if you load it with the <script> tag then you must use the UMD version. You can find it in /dist/umd. The default (in /dist) is the ESNext (ECMA-Script) which can not be loaded using the script tag.