Examine source code of Gsorter

{
  "manifest_version": 3,
  "name": "Gsorter",
  "version": "1.2.1",
  "description": "Sort posts on Instagram, TikTok, Twitter/X, and Facebook by likes, views, comments, engagement, and date. Sort the profile you're on, or any username.",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "tabs",
    "downloads",
    "cookies"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "gsorter@gsorter.local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "host_permissions": [
    "https://www.instagram.com/*",
    "https://i.instagram.com/*",
    "https://www.tiktok.com/*",
    "https://www.tiktok.com/api/*",
    "https://twitter.com/*",
    "https://x.com/*",
    "https://www.facebook.com/*",
    "https://m.facebook.com/*",
    "https://mbasic.facebook.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon.png",
      "48": "icon.png",
      "128": "icon.png"
    },
    "default_title": "Gsorter"
  },
  "icons": {
    "16": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.instagram.com/*",
        "https://www.tiktok.com/*",
        "https://twitter.com/*",
        "https://x.com/*",
        "https://www.facebook.com/*",
        "https://m.facebook.com/*",
        "https://mbasic.facebook.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}