Examine source code of Date Inserter

{
  "manifest_version": 3,
  "name": "Date Inserter",
  "version": "1.2.0",
  "description": "Insert the current date into the active field using a keyboard shortcut or toolbar button.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "date-inserter@example.local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "action": {
    "default_title": "Insert current date",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "insert-current-date": {
      "suggested_key": {
        "default": "Ctrl+Shift+F9",
        "mac": "Command+Shift+F9"
      },
      "description": "Insert the current date into the active field"
    }
  },
  "host_permissions": [
    "<all_urls>"
  ]
}