rollup is the best ES6 module bundler currently out there. It’s simple, fast and extendable.
And Rollup bundles into clean and readable code. (I am looking at you, Webpack!)
In case you need to open an remote Mongo server to a ssh tunnel.
This covers only the steps for Mongo 3.x, you will need to open ssh for the port as well.
Edit March 2017: I now added the downgrading variant, i.e. Ubuntu 16.04 with PHP.71 and 5.6