Examine source code of Clean Reload

{
  "manifest_version": 3,
  "name": "Clean Reload",
  "description": "ワンクリックで Service Worker 登録と HTTP キャッシュをクリアしてページを再読み込みします。",
  "version": "1.0.16",
  "browser_specific_settings": {
    "gecko": {
      "id": "{a4a7df25-9281-44f6-9d06-5959599c6473}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Clean Reload"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "browsingData",
    "contextMenus",
    "tabs"
  ]
}