Resource interpreted as Stylesheet but transferred with MIME type text/plain

[jscastro76]

Resource interpreted as Stylesheet but transferred with MIME type text/plain: "http://localhost:8080/examples/css/threebox.css".

It's not a blocker, but definitely is a warning that could be avoided in server.js or with HTML tagging
https://stackoverflow.com/questions/41734976/resource-interpreted-as-stylesheet-but-transferred-with-mime-type-text-javascrip
https://stackoverflow.com/questions/33280981/nodejs-cant-load-css-file

[jscastro76]

Server.js is an optional file to use, but as long as it's producing this warning, it's been solved adding a content-type header for all the valid extensions, defined at a list of valid Mime types. In that way any new static file extension will be added to server.js

response.setHeader("Content-Type", validExtensions[ext]);