Examine source code of WiktionaryNow

{
  "manifest_version": 3,
  "name": "WiktionaryNow",
  "version": "1.0",
  "description": "Right-click a word to look it up in Wiktionary in your target language.",
  "permissions": [
    "contextMenus",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "icons": {
    "48": "icons/wikt_icon.jpg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wiktionary_now@future_warning",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "58.0"
    }
  }
}