Examine source code of MD3: Expressive New Tab

{
  "manifest_version": 3,
  "name": "MD3: Expressive New Tab",
  "version": "1.3",
  "description": "A minimalist, customizable New Tab page inspired by Google's Material Design.",
  "default_locale": "en_US",
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "background": {
    "scripts": [
      "assets/background.ts.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "md3expressive@snw-mint",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "unlimitedStorage"
  ],
  "optional_host_permissions": [
    "https://geocoding-api.open-meteo.com/*",
    "https://api.open-meteo.com/*",
    "https://duckduckgo.com/*"
  ]
}