Examine source code of Hide The For You Tab

{
  "manifest_version": 2,
  "name": "Hide For You Tab",
  "version": "1.0",
  "description": "Hides the 'For You' tab on Twitter.",
  "permissions": [
    "activeTab",
    "storage",
    "*://twitter.com/*",
    "*://x.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*",
        "*://x.com/*"
      ],
      "js": [
        "content_script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ebb50e58-20fe-42aa-bde4-1673ddf2b862}"
    }
  }
}