Examine source code of firmaHsn

{
  "manifest_version": 3,
  "name": "firmaHsn",
  "version": "1.10",
  "description": "Firma Digital HSN",
  "browser_specific_settings": {
    "gecko": {
      "id": "firmadorhsn@senado.gob.ar",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "nativeMessaging"
  ],
  "icons": {
    "16": "fav_16.png",
    "32": "fav_32.png",
    "48": "fav_48.png",
    "128": "fav_128.png"
  },
  "background": {
    "scripts": [
      "main.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "file:///*",
        "https://*.senado.gob.ar/*",
        "http://*.senado.gob.ar/*",
        "https://*.senado.gov.ar/*",
        "http://*.senado.gov.ar/*",
        "http://localhost/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}