To make Realm Web consumable via a simple <script /> tag, we should publish a self-executing function ("iife").

From the Rollup.js guide:
> This format wraps the code so that it can be consumed via a script tag in the browser while avoiding unwanted interactions with other code. As we have an export, we need to provide the name of a global variable that will be created by our bundle so that other code can access our export via this variable.

We could publish using https://unpkg.com/