Change pattern of route parameter

[rtritto]

How to change the pattern of route parameter from :param to [param]?

With req.getParameter(0), I need to get the id value from the route /item/[id].

[e3dio]

const param = str => str.replace('[', ':').replace(']', '');

app.get(param('/item/[id]'), (res, req) => {
   res.end(req.getParameter(0));
});