How to pin a Bootstrap plugin installed with jspm / system.js requiring global jQuery

Question

How to pin a Bootstrap plugin installed with jspm / system.js requiring global jQuery

I have an ES6 Setup that works with jspm and system.js with an additional registered chat endpoint. I need this endpoint because installing Boostrap via npm or github does not provide unnecessary files for Bootstrap (anymore).

However, I want to use some of the Bootstrap plugins (i.e. minimize). Since they are simple jQuery plugins without AMD or CommonJS syntax, they need jQuery globally.

I have no clue how to flash the config.js file for system.js for this. You can pass custom overrides like this

{
  "main": "js/jquery.keyboard.js",
  "shim": {
       "js/jquery.keyboard": {
       "deps": ["jquery"]
  }
},
"dependencies": {
    "jquery": "*"
    }
}