Examine source code of NY Time

{
  "manifest_version": 2,
  "name": "NY Time",
  "version": "1.0.2",
  "description": "Current time in New York.",
  "icons": {
    "32": "1.png",
    "64": "1.png",
    "128": "1.png"
  },
  "permissions": [],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "NY Time"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nytime@extension",
      "strict_min_version": "109.0"
    }
  }
}