Examine source code of Pathbuilder Discord Bot

{
  "manifest_version": 2,
  "name": "Pathbuilder Discord Bot",
  "version": "1.0",
  "description": "Exports your rolls from pathbuilder to discord",
  "permissions": [
    "activeTab",
    "downloads",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Discord Integration",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png",
      "512": "icons/icon512.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "512": "icons/icon512.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://pathbuilder2e.com/*"
      ],
      "css": [
        "toast.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "h.c.nelson1@gmail.com"
    }
  }
}