Examine source code of ShortcutMap

{
  "manifest_version": 3,
  "name": "ShortcutMap",
  "version": "1.0.0",
  "description": "Map keyboard shortcuts, accesskey usage, and key-handler hotspots on the active page.",
  "icons": {
    "48": "icon/icon-48.png",
    "96": "icon/icon-96.png",
    "128": "icon/icon-128.png"
  },
  "action": {
    "default_title": "ShortcutMap",
    "default_popup": "popup/view.html",
    "default_icon": {
      "48": "icon/icon-48.png"
    }
  },
  "options_ui": {
    "page": "settings/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs",
    "clipboardWrite"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{de4dee25-7919-40c9-ad0a-55edee3cc066}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}