Examine source code of Copy Server IP

{
  "manifest_version": 2,
  "name": "Copy Server IP",
  "version": "1.0",
  "permissions": [
    "contextMenus",
    "tabs",
    "clipboardWrite",
    "activeTab",
    "dns",
    "notifications"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{27d44a04-00aa-48f8-92f4-8671e6007508}"
    }
  }
}