Examine source code of Sort tabs advanced

{
  "manifest_version": 3,
  "name": "Sort tabs advanced",
  "version": "0.5",
  "author": "Mois Moshev <mois@monomon.me>",
  "icons": {
    "48": "icons/sortabs-48.png"
  },
  "description": "Sort tabs by various criteria",
  "action": {
    "default_icon": {
      "16": "icons/sortabs-16.png",
      "24": "icons/sortabs-24.png",
      "48": "icons/sortabs-48.png"
    },
    "default_title": "Sort tabs advanced",
    "default_popup": "popup/picker.html"
  },
  "permissions": [
    "tabs",
    "tabGroups",
    "storage",
    "contextualIdentities"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d6f02b92-88b3-4aa5-ba7c-14519042171d}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}