Examine source code of findEmails

{
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "iamsagar099@gmail.com",
      "strict_min_version": "101.0"
    }
  },
  "name": "All Emails",
  "version": "1.0",
  "description": "This extension allows you to extract all the emails present on the current tab of your browser. It works by scanning the HTML content of the web page and finding the email patterns. You can use this extension to collect email addresses for various purposes, such as marketing, research, or communication. To use this extension, simply click on the icon in the toolbar and a pop-up window will show you the list of emails found on the current tab.",
  "permissions": [
    "activeTab"
  ],
  "action": {
    "default_icon": "icon.png",
    "default_title": "AllEmails",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}