Resource interpreted as Script but transferred with MIME type text/plain - for local file

I'm getting a "Resource interpreted as Script but transferred with MIME type text/plain" warning in Google Chrome when including a local script file.

I know the problem appears when loading a file from a server or through ajax which most often depends on wrong headers being set.

The weird thing is that I get this warning even though it is run from a local folder: file:///C:/test/foo.html

This happens only in Chrome with the most basic html there is:

<!DOCTYPE html>
    <html>
    <head>
        <script type="text/javascript" src="bar.js"></script>
    </head>
    <body>
    </body>
</html>

bar.js is also as simple as it can get:

function hello() {}

I've tried adding a meta tag:

<meta http-equiv="content-script-type" content="text/javascript">

and tested with other doctypes but nothing seems to help.

This obviously isn't a real issue since the scripts still work fine, but I'm working on a large project and currently have around 150 scripts included. It therefore makes it difficult to see when an actual warning occurs in between them.

Everything works fine when I run the file on a server, locally or remote.

Any ideas on why chrome is annoying me with this?