Examine source code of WhatsApp Quick Connect

{
  "manifest_version": 3,
  "name": "WhatsApp Quick Connect",
  "version": "1.0.0",
  "description": "Automatically detects phone numbers on web pages and converts them into clickable WhatsApp links.",
  "browser_specific_settings": {
    "gecko": {
      "id": "whatsapp-quick-connect@davdomin.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/phone-detector.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ]
}