Examine source code of security.txt checker

{
  "manifest_version": 3,
  "description": "__MSG_extension_description__",
  "default_locale": "en",
  "incognito": "spanning",
  "icons": {
    "16": "img/info.16.png",
    "48": "img/info.48.png",
    "96": "img/info.96.png",
    "128": "img/info.128.png"
  },
  "host_permissions": [
    "http://*/.well-known/security.txt",
    "http://*/security.txt",
    "http://*/humans.txt",
    "https://*/.well-known/security.txt",
    "https://*/security.txt",
    "https://*/humans.txt"
  ],
  "permissions": [
    "tabs",
    "storage"
  ],
  "name": "security.txt checker",
  "version": "2.0.0",
  "author": "mohclips",
  "homepage_url": "https://github.com/mohclips/security.txt",
  "background": {
    "scripts": [
      "js/minimatch.js",
      "js/async.js",
      "js/global.js",
      "js/background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "page_action": {
    "default_icon": "img/shield.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "security-txt@mohclips",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}