Examine source code of Elumity Web Importer

{
  "name": "Elumity Web Importer",
  "version": "4.0.1",
  "description": "Elumity Web Importer",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "@elumity-web-importer",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "/assets/icon16.png",
    "32": "/assets/icon32.png",
    "48": "/assets/icon48.png",
    "128": "/assets/icon128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "scripting",
    "webRequest",
    "cookies",
    "contextMenus"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_icon": {
      "16": "/assets/icon16.png",
      "32": "/assets/icon32.png",
      "48": "/assets/icon48.png",
      "128": "/assets/icon128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "index.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}