Examine source code of Roblox Game Filter

{
  "manifest_version": 3,
  "name": "Roblox Game Filter",
  "version": "1.0",
  "description": "Hides games containing user-entered keywords.",
  "permissions": [
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.roblox.com/*"
      ],
      "js": [
        "filter.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "roblox-filter-extension@local.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}