Examine source code of Simple History Cleaner

{
  "manifest_version": 3,
  "name": "Simple History Cleaner",
  "short_name": "SH Cleaner",
  "description": "Clear browser history. Simple. Automatically. Constantly.",
  "version": "0.22",
  "id": "camenoblue@gmail.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "camenoblue@gmail.com",
      "strict_min_version": "109.0"
    }
  },
  "background": {
    "scripts": [
      "main.js"
    ],
    "service_worker": "main.js"
  },
  "action": {
    "default_icon": {
      "16": "/i/16.png",
      "32": "/i/on32.png"
    }
  },
  "icons": {
    "16": "/i/16.png",
    "32": "/i/on32.png",
    "48": "/i/48.png",
    "128": "/i/128.png"
  },
  "permissions": [
    "browsingData",
    "storage",
    "activeTab"
  ]
}