Examine source code of SpigotSearchEngine

{
  "manifest_version": 3,
  "name": "SpigotSearchEngine",
  "version": "3.0.2",
  "description": "SpigotMC Search Engine",
  "icons": {
    "16": "SpigotSearchEngine.png",
    "48": "SpigotSearchEngine.png",
    "128": "SpigotSearchEngine.png"
  },
  "host_permissions": [
    "https://fof1092.de/Plugins/SSE/resourceSearchV2.php*",
    "https://fof1092.de/Plugins/SSE/randomPlugin.php*",
    "https://fof1092.de/Plugins/SSE/status.php*",
    "https://www.spigotmc.org/resources/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9afb539b-d275-4626-8891-1cdd00b6725e}",
      "strict_min_version": "109.0"
    }
  },
  "action": {
    "default_icon": {
      "16": "SpigotSearchEngine.png",
      "48": "SpigotSearchEngine.png",
      "128": "SpigotSearchEngine.png"
    }
  },
  "content_scripts": [
    {
      "js": [
        "Library/countUp.js",
        "SSELocalStorage.js",
        "Resources/Classes/ResourceAuthor.js",
        "Resources/Classes/ResourceCategory.js",
        "Resources/Classes/ResourceDownload.js",
        "Resources/Classes/ResourcePrice.js",
        "Resources/Classes/ResourceRating.js",
        "Resources/Classes/ResourceTestedMinecraftVersions.js",
        "Resources/Classes/ResourceTime.js",
        "Resources/Resource.js",
        "Resources/ResourceListener.js",
        "SSEStatus.js",
        "SSEGuiManager.js",
        "SpigotSearchEngine.js"
      ],
      "css": [
        "SpigotSearchEngine.css"
      ],
      "matches": [
        "https://www.spigotmc.org/resources/",
        "https://www.spigotmc.org/resources/?*",
        "https://www.spigotmc.org/resources/categories/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "SpigotSearchEngineBackgroundFirefox.js"
    ]
  }
}