Examine source code of goSurf

{
  "manifest_version": 3,
  "name": "goSurf",
  "description": "Real-time personalized surf conditions, right in your browser toolbar.",
  "version": "1.1.0",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://marine-api.open-meteo.com/*",
    "https://api.open-meteo.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gosurf@dlgoodspeed.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "goSurf",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  }
}