Examine source code of PCGGhost

{
  "manifest_version": 2,
  "name": "PCGGhost",
  "version": "3.0.2",
  "description": "Helps in PCG battles!",
  "content_scripts": [
    {
      "matches": [
        "https://pm0qkv9g4h87t5y6lg329oam8j7ze9.ext-twitch.tv/*"
      ],
      "js": [
        "static/js/main.58c808ea.js"
      ],
      "all_frames": true
    }
  ],
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1f5a26ed-8f66-4e33-a566-145c0debe6eb}"
    }
  },
  "icons": {
    "96": "96.png",
    "128": "128.png"
  }
}