Folder for server + middleware

Hi,
what about creating dedicated folder (src/server) for server implementation?

Also what about moving middleware into dedicated folder (src/server/middleware) and file(s)?

For example:

src/server/middleware/compression.js
app.use(compression());

src/server/middleware/favicon.js
app.use(favicon(path.join(__dirname, '..', 'static', 'favicon.ico')));

What is your opinion?