Examine source code of New Tab - Moment

{
  "manifest_version": 3,
  "name": "New Tab - Moment",
  "short_name": "new-tab-moment",
  "version": "0.13.7",
  "description": "A minimalist clock on the new tab page showing the current time, date, and weather. Based on Moment from Alfred Xing.",
  "author": "laedit",
  "homepage_url": "https://github.com/laedit/new-tab-moment",
  "chrome_url_overrides": {
    "newtab": "moment.html"
  },
  "permissions": [
    "storage",
    "geolocation"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "new-tab-moment@laedit.net",
      "strict_min_version": "109.0"
    }
  }
}