Examine source code of History Cleaner

{
  "manifest_version": 3,
  "name": "History Cleaner",
  "version": "1.0",
  "description": "Elimina entradas del historial del navegador por dominio",
  "author": "Diego Alterach",
  "homepage_url": "https://github.com/diegoalterach/historycleaner",
  "browser_specific_settings": {
    "gecko": {
      "id": "historycleaner@diegoalterach",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "history",
    "storage"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  }
}