Examine source code of FurAffinity Extender

{
  "name": "FurAffinity Extender",
  "manifest_version": 3,
  "description": "FurAffinity Extender adds to the your browsing experience of FurAffinity.net by adding additional client-side features.",
  "icons": {
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.furaffinity.net/*"
      ],
      "js": [
        "page_inject.bundle.js",
        "vendor.bundle.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "tabdelay.html"
      ],
      "matches": [
        "*://*.furaffinity.net/*"
      ]
    }
  ],
  "homepage_url": "https://cheeplusplus.github.io/faextender-chrome/",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "downloads"
  ],
  "version": "3.2.6",
  "background": {
    "scripts": [
      "background.bundle.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "faextender@neocodenetworks.com",
      "strict_min_version": "109.0"
    }
  }
}