Examine source code of TikTok Background Play

{
  "manifest_version": 3,
  "name": "TikTok Background Play",
  "description": "Permet à TikTok de continuer la lecture audio et vidéo en arrière-plan, même lorsque l’onglet est inactif ou masqué.",
  "version": "1.0",
  "permissions": [
    "tabs",
    "scripting"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tiktok-background-play@addons.mozilla.org",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.tiktok.com/*"
      ],
      "run_at": "document_idle"
    }
  ]
}