Examine source code of Bitcashback

{
  "manifest_version": 3,
  "name": "Bitcashback",
  "version": "4.3.0",
  "description": "Estensione che ti notifica quando ti trovi in un negozio affiliato a Bitcashback",
  "background": {
    "scripts": [
      "script/worker.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "BitCashback: il tuo cashback in bitcoin",
    "default_icon": {
      "16": "images/bitcback-16.png",
      "19": "images/bitcback-19.png",
      "32": "images/bitcback-32.png",
      "38": "images/bitcback-38.png",
      "48": "images/bitcback-48.png",
      "128": "images/bitcback-128.png"
    },
    "default_popup": "pages/popup.html"
  },
  "content_scripts": [
    {
      "css": [
        "css/bitcback.css",
        "css/bitcback-amz.css"
      ],
      "js": [
        "script/initialize.js",
        "script/content_script.js"
      ],
      "matches": [
        "https://*/*"
      ],
      "run_at": "document_end"
    },
    {
      "js": [
        "script/bitcback.js",
        "script/tracking.js",
        "script/alert-amz.js"
      ],
      "matches": [
        "https://bitcashback.net/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "storage",
    "cookies",
    "clipboardWrite",
    "tabs"
  ],
  "optional_permissions": [
    "privacy"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "options_ui": {
    "page": "pages/options.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*",
        "pages/*",
        "script/*",
        "fonts/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "16": "images/bitcback-16.png",
    "19": "images/bitcback-19.png",
    "32": "images/bitcback-32.png",
    "38": "images/bitcback-38.png",
    "48": "images/bitcback-48.png",
    "128": "images/bitcback-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "snowhaystack@gmail.com",
      "strict_min_version": "102.0"
    }
  }
}