Examine source code of Tiermaker Layout Fixer

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Tiermaker Layout Fixer",
  "short_name": "TLF",
  "description": "Fixes Tiermaker's annoying default layout",
  "version": "1.1.3",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/pseudoJQ.js",
        "scripts/tier.js",
        "scripts/align.js"
      ],
      "matches": [
        "*://tiermaker.com/create/*",
        "*://tiermaker.com/create-xy/*"
      ],
      "run_at": "document_end"
    }
  ],
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1a4bf69-913e-4e4f-9a95-2f8d5f9ad494}"
    }
  }
}