Examine source code of 42 Cal

{
  "manifest_version": 3,
  "name": "42 Cal - Ajouter l'event au calendrier",
  "version": "1.0.3",
  "description": "Cette extension permet de créer un bouton pour ajouter un événement de l'intra 42 à ton Google Agenda.",
  "permissions": [],
  "host_permissions": [
    "https://api.intra.42.fr/*",
    "https://*.intra.42.fr/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "page-bridge.js"
      ],
      "matches": [
        "https://profile.intra.42.fr/*",
        "https://intra.42.fr/*",
        "https://*.intra.42.fr/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://profile.intra.42.fr/*",
        "https://intra.42.fr/*",
        "https://*.intra.42.fr/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "42cal@mod42cal.local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}