Notion App Opener for Tampermonkey

notion_app_opener.js

// ==UserScript==
// @name         Notion App Opener
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Replace Notion URL to open native app
// @author       Masayuki Uehara
// @match        https://*.notion.so/*
// @match        https://notion.so/*
// @grant        window.close
// ==/UserScript==

(function() {
    'use strict';
    if (location.href.match(/^https?:\/\/.*notion\.so\/native\//)) {
        window.open('', '_self', '');
        window.close();
    } else {
        window.location.href = window.location.href.replace(/^(https?:\/\/.*notion\.so)\/(.*)$/, '$1/native/$2');
    }
})();