Examine source code of Amazon Shopping Optimizer

{
  "manifest_version": 3,
  "name": "Amazon Shopping Optimizer",
  "version": "0.1.0",
  "description": "Amazon unit price and value checker with explicit-click comparison links.",
  "browser_specific_settings": {
    "gecko": {
      "id": "amazon-shopping-optimizer@example.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "121.0"
    }
  },
  "action": {
    "default_title": "Amazon Shopping Optimizer",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icon16.png",
      "32": "assets/icon32.png",
      "48": "assets/icon48.png",
      "128": "assets/icon128.png"
    }
  },
  "icons": {
    "16": "assets/icon16.png",
    "32": "assets/icon32.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.amazon.com/*",
    "https://www.amazon.co.uk/*",
    "https://www.amazon.ca/*",
    "https://www.amazon.de/*",
    "https://www.amazon.fr/*",
    "https://www.amazon.it/*",
    "https://www.amazon.es/*",
    "https://www.amazon.com.au/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.amazon.com/*",
        "https://www.amazon.co.uk/*",
        "https://www.amazon.ca/*",
        "https://www.amazon.de/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.it/*",
        "https://www.amazon.es/*",
        "https://www.amazon.com.au/*"
      ],
      "js": [
        "utils/units.js",
        "utils/parser.js",
        "utils/calculator.js",
        "utils/affiliate.js",
        "utils/storage.js",
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_idle"
    }
  ]
}