Examine source code of X-Following Auto Switcher

{
  "manifest_version": 3,
  "name": "X Following Tab Switcher",
  "version": "1.1.0",
  "description": "Force l'onglet 'Abonnements' sur X (Twitter).",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://x.com/*",
        "*://twitter.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "x-following-switcher@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}