Examine source code of TimoVoip

{
  "manifest_version": 3,
  "name": "TimoVoip",
  "description": "Instantly finds, processes and sends the phone number from the TimoCom exchange directly to the VoIP.",
  "version": "3.1.0",
  "default_locale": "en",
  "icons": {
    "16": "icons/extension_icon16.png",
    "32": "icons/extension_icon32.png",
    "48": "icons/extension_icon48.png",
    "64": "icons/extension_icon64.png",
    "128": "icons/extension_icon128.png"
  },
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "utils/consts-global.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://my.timocom.com/app/tccargo/freights/search*"
      ],
      "js": [
        "browser-polyfill.min.js",
        "tccargo_freight/script.js"
      ]
    },
    {
      "matches": [
        "https://my.timocom.com/app/tcprofile/show/*"
      ],
      "js": [
        "browser-polyfill.min.js",
        "tc_profile/script.js"
      ]
    },
    {
      "matches": [
        "https://my.timocom.com/app/tccargo/freights/search*"
      ],
      "run_at": "document_start",
      "js": [
        "browser-polyfill.min.js",
        "tccargo_freight/extend-page-inject.js"
      ]
    },
    {
      "matches": [
        "https://my.timocom.com/app/tcprofile/show/*"
      ],
      "run_at": "document_start",
      "js": [
        "browser-polyfill.min.js",
        "tc_profile/extend-page-inject.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "timo_voip@timovoip.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup/login/pl.html"
  },
  "permissions": [
    "notifications",
    "nativeMessaging",
    "storage"
  ],
  "host_permissions": [
    "https://my.timocom.com/app/*"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "tccargo_freight/extend-page.js"
      ],
      "matches": [
        "https://my.timocom.com/*"
      ]
    },
    {
      "resources": [
        "tc_profile/extend-page.js"
      ],
      "matches": [
        "https://my.timocom.com/*"
      ]
    }
  ]
}