Examine source code of TemplateTree

{
  "manifest_version": 2,
  "name": "TemplateTree",
  "description": "Hierarchical template management with tree-based right-click menu insertion",
  "version": "4.0",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/1.png",
      "32": "icons/2.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8cccd998-f930-4335-9d03-a12ce18bddad}"
    }
  }
}