Examine source code of Refresher

{
  "manifest_version": 2,
  "name": "Refresher",
  "version": "1.0",
  "content_security_policy": "script-src 'self' https://cdn.tailwindcss.com; object-src 'self'",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "description": "Auto refreshes the current tab",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "48": "reload.png"
  },
  "browser_action": {
    "default_title": "Refresher",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{418f4c1e-63ae-4227-82a0-733a28884f15}"
    }
  }
}