Examine source code of Offline when Minimized

// manifest.json
// First created on 2019-09-20.

{
	"manifest_version": 2,
	"name": "MinimizedOffline",
	"version": "0.8.1",

	"description": "Blocks all connections when the browser window is minimized. The request is blocked if its parent window is minimized.",
	
  "permissions": [
  	"*://*/*",
    "webRequest",
  	"webRequestBlocking"
	],
  
  
	"background": {
		"scripts": ["MinimizedOffline-bgScript.js"]
  }
}