Examine source code of CopyCart

{
  "manifest_version": 3,
  "name": "CopyCart",
  "version": "1.6",
  "description": "Extracts active cart items with item checkboxes, combines items into a shareable list, and saved cart folders.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://*.amazon.com/cart*",
    "https://*.amazon.com/gp/cart*",
    "https://*.amazon.com/gp/aw/c*",
    "https://*.amazon.co.uk/cart*",
    "https://*.amazon.co.uk/gp/cart*",
    "https://*.amazon.co.uk/gp/aw/c*",
    "https://*.amazon.ca/cart*",
    "https://*.amazon.ca/gp/cart*",
    "https://*.amazon.ca/gp/aw/c*",
    "https://*.amazon.de/cart*",
    "https://*.amazon.de/gp/cart*",
    "https://*.amazon.de/gp/aw/c*",
    "https://*.amazon.fr/cart*",
    "https://*.amazon.fr/gp/cart*",
    "https://*.amazon.fr/gp/aw/c*",
    "https://*.amazon.it/cart*",
    "https://*.amazon.it/gp/cart*",
    "https://*.amazon.it/gp/aw/c*",
    "https://*.amazon.es/cart*",
    "https://*.amazon.es/gp/cart*",
    "https://*.amazon.es/gp/aw/c*",
    "https://*.amazon.co.jp/cart*",
    "https://*.amazon.co.jp/gp/cart*",
    "https://*.amazon.co.jp/gp/aw/c*",
    "https://*.amazon.com.au/cart*",
    "https://*.amazon.com.au/gp/cart*",
    "https://*.amazon.com.au/gp/aw/c*",
    "https://*.amazon.com.br/cart*",
    "https://*.amazon.com.br/gp/cart*",
    "https://*.amazon.com.br/gp/aw/c*",
    "https://*.amazon.nl/cart*",
    "https://*.amazon.nl/gp/cart*",
    "https://*.amazon.nl/gp/aw/c*",
    "https://*.amazon.se/cart*",
    "https://*.amazon.se/gp/cart*",
    "https://*.amazon.se/gp/aw/c*",
    "https://*.amazon.pl/cart*",
    "https://*.amazon.pl/gp/cart*",
    "https://*.amazon.pl/gp/aw/c*",
    "https://*.amazon.sg/cart*",
    "https://*.amazon.sg/gp/cart*",
    "https://*.amazon.sg/gp/aw/c*",
    "https://*.amazon.ae/cart*",
    "https://*.amazon.ae/gp/cart*",
    "https://*.amazon.ae/gp/aw/c*",
    "https://*.amazon.sa/cart*",
    "https://*.amazon.sa/gp/cart*",
    "https://*.amazon.sa/gp/aw/c*",
    "https://*.amazon.in/cart*",
    "https://*.amazon.in/gp/cart*",
    "https://*.amazon.in/gp/aw/c*"
  ],
  "icons": {
    "16": "icon1.png",
    "32": "icon2.png",
    "48": "icon3.png",
    "128": "icon4.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon1.png",
      "32": "icon2.png",
      "48": "icon3.png",
      "128": "icon4.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "copycart@apex1.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}