If you are using the import statement to import different files in your JavaScript application, you might find the browser giving you this error: Unexpected Identifier.

Why? And how can you make ES6 modules work in browsers?
You just have to do one tiny change: instead of loading your main entry point JavaScript file using
<script src="index.js"></script>
add type="module":
<script type="module" src="index.js"></script>
and things should now work fine.