Examine source code of Amazon Search Focus

{
  "manifest_version": 3,
  "name": "Amazon Search Focus",
  "version": "1.0.2",
  "description": "Focuses the Amazon search box when you land on the homepage.",
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icon-48.png",
    "96": "icon-96.png",
    "128": "icon-128.png"
  },
  "action": {
    "default_title": "Amazon Search Focus",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon-48.png",
      "96": "icon-96.png",
      "128": "icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "host_permissions": [
    "https://www.amazon.com/*",
    "https://www.amazon.co.uk/*",
    "https://www.amazon.de/*",
    "https://www.amazon.fr/*",
    "https://www.amazon.it/*",
    "https://www.amazon.es/*",
    "https://www.amazon.nl/*",
    "https://www.amazon.se/*",
    "https://www.amazon.pl/*",
    "https://www.amazon.com.be/*",
    "https://www.amazon.com.tr/*",
    "https://www.amazon.ca/*",
    "https://www.amazon.com.mx/*",
    "https://www.amazon.com.br/*",
    "https://www.amazon.com.au/*",
    "https://www.amazon.co.jp/*",
    "https://www.amazon.in/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.amazon.com/*",
        "https://www.amazon.co.uk/*",
        "https://www.amazon.de/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.it/*",
        "https://www.amazon.es/*",
        "https://www.amazon.nl/*",
        "https://www.amazon.se/*",
        "https://www.amazon.pl/*",
        "https://www.amazon.com.be/*",
        "https://www.amazon.com.tr/*",
        "https://www.amazon.ca/*",
        "https://www.amazon.com.mx/*",
        "https://www.amazon.com.br/*",
        "https://www.amazon.com.au/*",
        "https://www.amazon.co.jp/*",
        "https://www.amazon.in/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "amazon-search-focus@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}