Examine source code of Geocache Solved

{
  "manifest_version": 3,
  "name": "Geocache Solved",
  "version": "1.3",
  "description": "Auto resolve geocache coords from solvedjigidi website",
  "action": {
    "default_icon": {
      "128": "icon.png"
    },
    "default_title": "Geocache Solved"
  },
  "icons": {
    "128": "icon.png"
  },
  "host_permissions": [
    "https://www.geocaching.com/*",
    "https://solvedjigidi.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.geocaching.com/geocache/*",
        "https://www.geocaching.com/seek/cache_details.aspx?*"
      ],
      "js": [
        "jquery.min.js",
        "geocache.js"
      ]
    }
  ],
  "permissions": [
    "declarativeNetRequest"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "modify_response_ruleset",
        "path": "jigidi.json",
        "enabled": true
      }
    ]
  },
  "background": {
    "scripts": [
      "bg.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4f8fde7a-0e37-4df6-abfa-100f802fd5cd}"
    }
  }
}