Examine source code of RSI Companion

{
  "manifest_version": 2,
  "name": "RSI Companion",
  "description": "Improve your RSI experience on robertsspaceindustries.com.",
  "version": "1.5.9",
  "icons": {
    "64": "icon/64.png",
    "128": "icon/128.png",
    "256": "icon/256.png"
  },
  "author": "Camille (waibcam)",
  "permissions": [
    "cookies",
    "alarms",
    "storage",
    "scripting",
    "tabs",
    "https://robertsspaceindustries.com/*",
    "https://status.robertsspaceindustries.com/*",
    "https://ptu.cloudimperiumgames.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f6df4d5-2bc0-4f21-9a05-ca509c64a7ff}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "RSI Companion",
    "default_popup": "popup.html"
  }
}