Examine source code of TwitterHelper

{
  "manifest_version": 3,
  "name": "TwitterHelper",
  "version": "1.0",
  "description": "Firefox Extension to elevate you Twitter/X experience.",
  "browser_specific_settings": {
    "gecko": {
      "id": "twitter-share-fix@example.com",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "clipboardWrite"
  ],
  "host_permissions": [
    "*://x.com/*",
    "*://twitter.com/*"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-16.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://x.com/*",
        "*://twitter.com/*"
      ],
      "js": [
        "src/script.js"
      ]
    }
  ]
}