Examine source code of Multi-Search Tabs

{
  "manifest_version": 3,
  "name": "Multi-Search Tabs",
  "version": "1.0.0",
  "description": "Open multiple tabs by replacing 'input' in saved user links.",
  "permissions": [
    "storage",
    "tabs"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon.png",
      "24": "icons/icon.png",
      "32": "icons/icon.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "multi-search-tabs@example.com",
      "strict_min_version": "121.0"
    }
  },
  "icons": {
    "16": "icons/icon.png",
    "48": "icons/icon.png",
    "128": "icons/icon.png"
  }
}