Examine source code of Ew, Connections!

{
  "manifest_version": 3,
  "name": "Ew, Connections!",
  "version": "3.0",
  "description": "It's called friends, roblox..",
  "browser_specific_settings": {
    "gecko": {
      "id": "ew-connections@robloxfriendsfix",
      "strict_min_version": "109.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.roblox.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ]
}