Examine source code of Social Watch

{
  "manifest_version": 2,
  "name": "Social Media Monitor",
  "version": "2.4",
  "description": "Monitor social media interactions with customizable alerts",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup/popup.html",
    "default_title": "Social Media Monitor"
  },
  "permissions": [
    "scripting",
    "storage",
    "*://*.tiktok.com/*",
    "notifications",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.tiktok.com/*"
      ],
      "js": [
        "content_scripts/common.js",
        "content_scripts/tiktok.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.instagram.com/*"
      ],
      "js": [
        "content_scripts/common.js",
        "content_scripts/instagram.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content_scripts/common.js",
        "content_scripts/youtube.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://www.facebook.com/*"
      ],
      "js": [
        "content_scripts/common.js",
        "content_scripts/facebook.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c25d9a19-db42-482e-84c7-6bdcbc122b95}"
    }
  }
}