Examine source code of Dictionary

{
  "name": "Dictionary",
  "description": "Look up words from any website",
  "version": "0.5",
  "manifest_version": 3,
  "action": {
    "default_popup": "main.html"
  },
  "permissions": [
    "contextMenus",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "background2.js",
    "scripts": [
      "background2.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "diciotnaryextension@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}