Examine source code of Robux Rate Extension

{
  "manifest_version": 3,
  "name": "Robux Rate Extension",
  "version": "3.4",
  "description": "x2 Multipler Button Robux",
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://www.roblox.com/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "canadianfloppa-robux-tools@example.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.roblox.com/users*",
        "https://www.roblox.com/trades*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}