Examine source code of CovidStatusHelper

{
  "description": "CovidStatusHelper",
  "manifest_version": 2,
  "name": "CovidStatusHelper",
  "version": "0.2",
  "homepage_url": "https://github.com/ViKingVT/AISCovidStatusHelper",
  "icons": {
    "48": "icons/beasts-48.png"
  },
  "permissions": [
    "activeTab",
    "cookies",
    "webRequest",
    "webRequestBlocking",
    "https://develop.mfc.local/users/*",
    "https://www.gosuslugi.ru/api/covid-cert/*"
  ],
  "browser_action": {
    "default_icon": "icons/beasts-32.png",
    "theme_icons": [
      {
        "light": "icons/beasts-32-light.png",
        "dark": "icons/beasts-32.png",
        "size": 32
      }
    ],
    "default_title": "Covid-status Helper",
    "default_popup": "popup/main.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.gosuslugi.ru/covid-status*"
      ],
      "js": [
        "content_scripts/angular.min.js"
      ]
    }
  ]
}