Examine source code of QR Scanner / Generator

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "version": "1.5",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "contextMenus",
    "clipboardWrite"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "lib/jsQR.min.js",
        "lib/qrcode.min.js",
        "content.js"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "QR Scanner / Generator"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+L"
      },
      "description": "Выделить область для сканирования QR-кода"
    },
    "scan_full_page_qr": {
      "suggested_key": {
        "default": "Ctrl+Shift+K",
        "mac": "Command+Shift+K"
      },
      "description": "Сканировать QR-коды на всей видимой странице"
    },
    "open_qr_generator": {
      "suggested_key": {
        "default": "Ctrl+Shift+U",
        "mac": "Command+Shift+U"
      },
      "description": "Открыть окно для создания QR"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "51fb2455-d25e-494d-be32-f9eaa3762d12@izvenyaisya"
    }
  }
}