Examine source code of AliBill TVA Fix

{
  "manifest_version": 2,
  "name": "AliBill TVA Fix",
  "version": "1.3",
  "description": "Ajoute la TVA sur les factures Aliexpress générées avec AliBill",
  "content_scripts": [
    {
      "matches": [
        "*://www.aliexpress.com/p/order/detail.html*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "permissions": [
    "*://www.aliexpress.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{be88ba43-3c51-46df-9d2a-117225b8ae85}"
    }
  }
}