Examine source code of DataCrypt plugin

{
  "name": "DataCrypt plugin",
  "short_name": "DCP",
  "homepage_url": "https://web.datacrypt.ru",
  "version": "1.0.2.0",
  "manifest_version": 2,
  "description": "Расширение для работы с плагином системы ЭДО 'Датакрипт WEB'",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "nativeMessaging"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.datacrypt.ru/*",
        "https://*.kemnet.ru/*"
      ],
      "js": [
        "content_scripts/router.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "datacryptplugin@inet.ru",
      "strict_min_version": "50.0"
    }
  }
}