Examine source code of StrakyTV

{
  "manifest_version": 3,
  "name": "StrakyTV",
  "version": "3.1",
  "description": "Être informé des lives de StrakyTV",
  "icons": {
    "128": "assets/img/icon.png"
  },
  "background": {
    "scripts": [
      "assets/js/background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@straky.tk"
    }
  }
}