MimeType detection.
This module made of WebModule.
<script src="<module-dir>/lib/WebModule.js"></script>
<script src="<module-dir>/lib/MimeType.js"></script>
<script>
console.log( MimeType.getMimeType("swf") ); // "application/x-shockwave-flash"
</script>
importScripts("<module-dir>lib/WebModule.js");
importScripts("<module-dir>lib/MimeType.js");
require("<module-dir>lib/WebModule.js");
require("<module-dir>lib/MimeType.js");