Examine source code of AntiImpostor

{
  "manifest_version": 2,
  "name": "AntiImpostor",
  "version": "0.2resigned1",
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "js": [
        "js/jquery-3.3.1.slim.min.js",
        "js/antiImpostor.js"
      ],
      "css": [
        "css/nodeInserted.css"
      ]
    }
  ],
  "icons": {
    "128": "logo/poorLogo.png"
  },
  "description": "When browsing Twitter you may find profiles imposing someone else, by signing up with a very similar name (eg. @bestmaik -> @bestmajk) and/or a very similar profile picture. As these profiles are mostly trying to scam you and annoy your experience with false content, I wrote this extension which is able to identify those profiles and hide their tweets, if they are answering on profiles they are trying to impose.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{fcb65d4b-3524-4a56-a480-2130d6a4cb99}"
    }
  }
}