Examine source code of Competitor Price Alert

{
  "manifest_version": 3,
  "name": "Competitor Price Alert",
  "version": "2.0.0",
  "description": "Track your products and monitor competitor price changes on Amazon.in and Flipkart.",
  "browser_specific_settings": {
    "gecko": {
      "id": "price-alert-extension@mazyad.app",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications",
    "activeTab",
    "identity",
    "contextMenus",
    "scripting"
  ],
  "host_permissions": [
    "*://*.amazon.in/*",
    "*://*.flipkart.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.amazon.in/*",
        "*://*.flipkart.com/*"
      ],
      "exclude_matches": [
        "*://*.amazon.in/*checkout*",
        "*://*.amazon.in/*payment*",
        "*://*.amazon.in/*signin*",
        "*://*.amazon.in/*account*",
        "*://*.flipkart.com/*checkout*",
        "*://*.flipkart.com/*payment*",
        "*://*.flipkart.com/*login*",
        "*://*.flipkart.com/*account*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Competitor Price Alert",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}