Examine source code of Refreshly

{
  "manifest_version": 3,
  "name": "AutoRefresher",
  "version": "1.3.1",
  "description": "Auto-refresh any tab on a schedule — hard reload, XHR, or click. Alerts you when a name you choose appears on the page.",
  "permissions": [
    "tabs",
    "storage",
    "alarms",
    "scripting",
    "notifications"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "src/lib/browser-polyfill.js",
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "src/lib/browser-polyfill.js",
        "src/content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    }
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "autorefresher@jnewby.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}