Examine source code of Tabrisen

{
  "manifest_version": 2,
  "name": "Tabrisen",
  "version": "1.0.0",
  "description": "Rise above clutter, stay clear.",
  "browser_specific_settings": {
    "gecko": {
      "id": "tabrisen@example.com",
      "strict_min_version": "102.0"
    }
  },
  "icons": {
    "48": "icons/tabrisen-48.png",
    "128": "icons/tabrisen-128.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Tabrisen",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/tabrisen-48.png",
      "128": "icons/tabrisen-128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "commands": {
    "rise-sweep": {
      "suggested_key": {
        "default": "Alt+Shift+R"
      },
      "description": "Rise Sweep: close duplicates and sort"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}