Examine source code of Twitter to Nitter

{
  "manifest_version": 2,
  "name": "Twitter to Nitter",
  "version": "1.3",
  "description": "Redirects Twitter/X to Nitter for a private, ad-free experience.",
  "permissions": [
    "webNavigation",
    "*://twitter.com/*",
    "*://x.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ca538717-fda3-4898-8dea-793e714903f2}"
    }
  }
}