Examine source code of Rettiwt Auth Helper

{
  "manifest_version": 3,
  "name": "Rettiwt-Auth Helper",
  "version": "1.0.1",
  "description": "A browser extension for authenticating Rettiwt-API.",
  "browser_specific_settings": {
    "gecko": {
      "id": "rettiwt-auth-helper@rishikant181.com"
    }
  },
  "permissions": [
    "cookies",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "*://x.com/*"
  ],
  "incognito": "spanning",
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "action": {
    "default_popup": "pages/popup.html"
  }
}