Examine source code of Element Copier

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "Element Copier",
  "version": "1.3.1",
  "description": "__MSG_extDescription__",
  "permissions": [
    "storage",
    "unlimitedStorage",
    "scripting",
    "activeTab",
    "contextMenus",
    "clipboardWrite"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Element Copier",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "service_worker": "app/background/main.js",
    "scripts": [
      "app/background/main.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "app/content/loader.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "app/*",
        "lib/*"
      ]
    }
  ],
  "commands": {
    "_execute_action": {},
    "activate-deactivate": {
      "description": "__MSG_commandToggleCopy__"
    },
    "deactivate-copy-mode": {
      "description": "__MSG_commandDeactivateCopy__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "element-copier@md2it.local",
      "strict_min_version": "121.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}