Amazon WishList Sum

{
    "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx",
    "name": "Amazon WishList Sum",
    "version": "1.0.0",
    "manifest_version": 3,
    "description": "It shows you a total sum of items in your wishlist on amazon.co.jp. (You have to reload a web page if you want to use this again.)",
    "action": {
        "default_icon": "icon16.png",
        "default_title": "\u5408\u8a08\u91d1\u984d"
    },
    "icons": {
        "16": "icon16.png"
    },
    "background": {
        "service_worker": "background.js"
    },
    "permissions": [
        "activeTab",
        "scripting"
    ],
    "host_permissions": [
        "https:\/\/www.amazon.co.jp\/*\/wishlist\/*"
    ]
}