Examine source code of ZIP Manager

{
  "manifest_version": 3,
  "version": "0.2.8",
  "name": "ZIP Manager (zip, rar, 7z)",
  "description": "__MSG_description__",
  "default_locale": "en",
  "permissions": [
    "storage",
    "downloads",
    "contextMenus"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "offline_enabled": true,
  "icons": {
    "16": "/data/icons/16.png",
    "32": "/data/icons/32.png",
    "48": "/data/icons/48.png",
    "64": "/data/icons/64.png",
    "128": "/data/icons/128.png",
    "256": "/data/icons/256.png"
  },
  "action": {},
  "homepage_url": "https://webextension.org/listing/zip-manager.html",
  "background": {
    "service_worker": "worker.js",
    "scripts": [
      "worker.js"
    ]
  },
  "sandbox": {
    "pages": [
      "/data/sandbox/index.html"
    ]
  },
  "commands": {
    "_execute_action": {}
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6c462069-8ae2-4a85-8563-924dd9c5897b}",
      "strict_min_version": "128.0"
    }
  }
}