Examine source code of Estopia Sparx

{
  "manifest_version": 3,
  "name": "Estopia Sparx",
  "version": "1.0.4",
  "description": "Automatically completes Sparx Maths homework on maths.sparx-learning.com.",
  "icons": {
    "128": "icon_128.png"
  },
  "host_permissions": [
    "https://maths.sparx-learning.com/*",
    "https://api.estopia.net/*"
  ],
  "permissions": [
    "storage",
    "identity"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Estopia Sparx",
    "default_icon": {
      "128": "icon_128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://maths.sparx-learning.com/*"
      ],
      "js": [
        "isolated.js"
      ]
    },
    {
      "matches": [
        "https://maths.sparx-learning.com/*"
      ],
      "js": [
        "content.js"
      ],
      "world": "MAIN"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "sparx@estopia.net",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}