Passing Javascript amqplib Channel To Route Middleware In ExpressJS

I am attempting to create an amqplib connection / channel when my express server starts up and pass that to routes so that they may declare queues, publish messages, etc. I have tried middleware but each time you go to a route and the middleware is invoked, a new connection is built.

I have my route middleware separated out of my index.js file so keep things tidy so I can't just define the amqp queue / publishing logic inside of index.js.

For example ...

// index.js
// ...
const amqplibConnection = // create amqp connection;
const channel = amqplibConnection.createChannel();

const app = express();
const fooRoutes = require('./routes/foo')
// how can I pass channel to ./routes/foo ???
app.use('/api/v1/foo', fooRoutes);

// routes/foo.js
const router = express.Router();
router.get('/', (req, res) => {
    // declare queue, publish message, etc ...
});

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