Routing from any path to same files in express, nodejs

I want to be able to send the same files for different paths like /stuff and /stuff/foo, the problem is that when I do try to do this I'm getting the following error:

Refused to execute script from 'http://localhost:8000/stuff/main.js' because its MIME type ('text/html') is not executable, and strict MIME type checking is enabled.

Here is the code:

app.use("/", express.static(path.join(__dirname, "./../public")));
app.get("/stuff", sendIndexHTML);
app.get("/stuff/:id", sendIndexHTML);

function sendIndexHTML(req, res) {
    res.sendFile(path.join(__dirname + "./../public/index.html"));
}

via Ferus