Examine source code of Download Folder Sorter

{
  "manifest_version": 2,
  "name": "Download Folder Sorter",
  "version": "1.0",
  "description": "Auto-organize downloaded files into subfolders by type.",
  "permissions": [
    "downloads",
    "storage"
  ],
  "icons": {
    "48": "brand/sort-48.png",
    "96": "brand/sort-96.png"
  },
  "browser_action": {
    "default_title": "Download Sorter",
    "default_popup": "rules/sorter-panel.html",
    "default_icon": {
      "48": "brand/sort-48.png",
      "96": "brand/sort-96.png"
    }
  },
  "background": {
    "scripts": [
      "organize/auto-sort.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "leenelina21@outlook.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}