const CUSTOM_SCRIPT = ``;
const CUSTOM_CSS = `
  .notion-scroller {
    margin: 60px !important;
    border-radius: 10px !important;
    background-color: white !important;
  }
  .notion-frame {
    background-color: #EEE !important;
  }
  `;

279

</script>${CUSTOM_SCRIPT}<style>${CUSTOM_CSS}</style>`, {

/* CONFIGURATION STARTS HERE */
  
  /* Step 1: enter your domain name like fruitionsite.com */
  const MY_DOMAIN = 'whatanotion.com';
  
  /*
   * Step 2: enter your URL slug to page ID mapping
   * The key on the left is the slug (without the slash)
   * The value on the right is the Notion page ID
   */
  const SLUG_TO_PAGE = {
    '': 'af5330301cd34f0089b7015e45c9dbbc',
  };
  
  /* Step 3: enter your page title and description for SEO purposes */
  const PAGE_TITLE = '';
  const PAGE_DESCRIPTION = '';
  
  /* Step 4: enter a Google Font name, you can choose from <https://fonts.google.com> */
  const GOOGLE_FONT = '';
  
  /* Step 5: enter any custom scripts you'd like */
  const CUSTOM_SCRIPT = ``;
  
  /* CONFIGURATION ENDS HERE */
  
  const PAGE_TO_SLUG = {};
  const slugs = [];
  const pages = [];
  Object.keys(SLUG_TO_PAGE).forEach(slug => {
    const page = SLUG_TO_PAGE[slug];
    slugs.push(slug);
    pages.push(page);
    PAGE_TO_SLUG[page] = slug;
  });
  
  addEventListener('fetch', event => {
    event.respondWith(fetchAndApply(event.request));
  });

  function generateSitemap() {
    let sitemap = '<urlset xmlns="<http://www.sitemaps.org/schemas/sitemap/0.9>">';
    slugs.forEach(
      (slug) =>
        (sitemap +=
          '<url><loc>https://' + MY_DOMAIN + '/' + slug + '</loc></url>')
    );
    sitemap += '</urlset>';
    return sitemap;
  }
  
  const corsHeaders = {
    'Access-Control-Allow-Origin': '*',
    'Access-Control-Allow-Methods': 'GET, HEAD, POST, PUT, OPTIONS',
    'Access-Control-Allow-Headers': 'Content-Type',
  };
  
  function handleOptions(request) {
    if (request.headers.get('Origin') !== null &&
      request.headers.get('Access-Control-Request-Method') !== null &&
      request.headers.get('Access-Control-Request-Headers') !== null) {
      // Handle CORS pre-flight request.
      return new Response(null, {
        headers: corsHeaders
      });
    } else {
      // Handle standard OPTIONS request.
      return new Response(null, {
        headers: {
          'Allow': 'GET, HEAD, POST, PUT, OPTIONS',
        }
      });
    }
  }
  
  async function fetchAndApply(request) {
    if (request.method === 'OPTIONS') {
      return handleOptions(request);
    }
    let url = new URL(request.url);
    url.hostname = 'www.notion.so';
    if (url.pathname === '/robots.txt') {
      return new Response('Sitemap: https://' + MY_DOMAIN + '/sitemap.xml');
    }
    if (url.pathname === '/sitemap.xml') {
      let response = new Response(generateSitemap());
      response.headers.set('content-type', 'application/xml');
      return response;
    }
    let response;
    if (url.pathname.startsWith('/app') && url.pathname.endsWith('js')) {
      response = await fetch(url.toString());
      let body = await response.text();
      response = new Response(body.replace(/www.notion.so/g, MY_DOMAIN).replace(/notion.so/g, MY_DOMAIN), response);
      response.headers.set('Content-Type', 'application/x-javascript');
      return response;
    } else if ((url.pathname.startsWith('/api'))) {
      // Forward API
      response = await fetch(url.toString(), {
        body: url.pathname.startsWith('/api/v3/getPublicPageData') ? null : request.body,
        headers: {
          'content-type': 'application/json;charset=UTF-8',
          'user-agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36'
        },
        method: 'POST',
      });
      response = new Response(response.body, response);
      response.headers.set('Access-Control-Allow-Origin', '*');
      return response;
    } else if (slugs.indexOf(url.pathname.slice(1)) > -1) {
      const pageId = SLUG_TO_PAGE[url.pathname.slice(1)];
      return Response.redirect('https://' + MY_DOMAIN + '/' + pageId, 301);
    } else {
      response = await fetch(url.toString(), {
        body: request.body,
        headers: request.headers,
        method: request.method,
      });
      response = new Response(response.body, response);
      response.headers.delete('Content-Security-Policy');
      response.headers.delete('X-Content-Security-Policy');
    }
  
    return appendJavascript(response, SLUG_TO_PAGE);
  }
  
  class MetaRewriter {
    element(element) {
      if (PAGE_TITLE !== '') {
        if (element.getAttribute('property') === 'og:title'
          || element.getAttribute('name') === 'twitter:title') {
          element.setAttribute('content', PAGE_TITLE);
        }
        if (element.tagName === 'title') {
          element.setInnerContent(PAGE_TITLE);
        }
      }
      if (PAGE_DESCRIPTION !== '') {
        if (element.getAttribute('name') === 'description'
          || element.getAttribute('property') === 'og:description'
          || element.getAttribute('name') === 'twitter:description') {
          element.setAttribute('content', PAGE_DESCRIPTION);
        }
      }
      if (element.getAttribute('property') === 'og:url'
        || element.getAttribute('name') === 'twitter:url') {
        element.setAttribute('content', MY_DOMAIN);
      }
      if (element.getAttribute('name') === 'apple-itunes-app') {
        element.remove();
      }
    }
  }
  
  class HeadRewriter {
    element(element) {
      if (GOOGLE_FONT !== '') {
        element.append(`<link href="<https://fonts.googleapis.com/css?family=$>{GOOGLE_FONT.replace(' ', '+')}:Regular,Bold,Italic&display=swap" rel="stylesheet">
        <style>* { font-family: "${GOOGLE_FONT}" !important; }</style>`, {
          html: true
        });
      }
      element.append(`<style>
      div.notion-topbar > div > div:nth-child(3) { display: none !important; }
      div.notion-topbar > div > div:nth-child(4) { display: none !important; }
      div.notion-topbar > div > div:nth-child(5) { display: none !important; }
      div.notion-topbar > div > div:nth-child(6) { display: none !important; }
      div.notion-topbar-mobile > div:nth-child(3) { display: none !important; }
      div.notion-topbar-mobile > div:nth-child(4) { display: none !important; }
      div.notion-topbar > div > div:nth-child(1n).toggle-mode { display: block !important; }
      div.notion-topbar-mobile > div:nth-child(1n).toggle-mode { display: block !important; }
      </style>`, {
        html: true
      })
    }
  }
  
  class BodyRewriter {
    constructor(SLUG_TO_PAGE) {
      this.SLUG_TO_PAGE = SLUG_TO_PAGE;
    }
    element(element) {
      element.append(`<div style="display:none">Powered by <a href="<http://fruitionsite.com>">Fruition</a></div>
      <script>
      window.CONFIG.domainBaseUrl = '<https://$>{MY_DOMAIN}';
      const SLUG_TO_PAGE = ${JSON.stringify(this.SLUG_TO_PAGE)};
      const PAGE_TO_SLUG = {};
      const slugs = [];
      const pages = [];
      const el = document.createElement('div');
      let redirected = false;
      Object.keys(SLUG_TO_PAGE).forEach(slug => {
        const page = SLUG_TO_PAGE[slug];
        slugs.push(slug);
        pages.push(page);
        PAGE_TO_SLUG[page] = slug;
      });
      function getPage() {
        return location.pathname.slice(-32);
      }
      function getSlug() {
        return location.pathname.slice(1);
      }
      function updateSlug() {
        const slug = PAGE_TO_SLUG[getPage()];
        if (slug != null) {
          history.replaceState(history.state, '', '/' + slug);
        }
      }
      function onDark() {
        el.innerHTML = '<div title="Change to Light Mode" style="margin-left: auto; margin-right: 14px; min-width: 0px;"><div role="button" tabindex="0" style="user-select: none; transition: background 120ms ease-in 0s; cursor: pointer; border-radius: 44px;"><div style="display: flex; flex-shrink: 0; height: 14px; width: 26px; border-radius: 44px; padding: 2px; box-sizing: content-box; background: rgb(46, 170, 220); transition: background 200ms ease 0s, box-shadow 200ms ease 0s;"><div style="width: 14px; height: 14px; border-radius: 44px; background: white; transition: transform 200ms ease-out 0s, background 200ms ease-out 0s; transform: translateX(12px) translateY(0px);"></div></div></div></div>';
        document.body.classList.add('dark');
        __console.environment.ThemeStore.setState({ mode: 'dark' });
      };
      function onLight() {
        el.innerHTML = '<div title="Change to Dark Mode" style="margin-left: auto; margin-right: 14px; min-width: 0px;"><div role="button" tabindex="0" style="user-select: none; transition: background 120ms ease-in 0s; cursor: pointer; border-radius: 44px;"><div style="display: flex; flex-shrink: 0; height: 14px; width: 26px; border-radius: 44px; padding: 2px; box-sizing: content-box; background: rgba(135, 131, 120, 0.3); transition: background 200ms ease 0s, box-shadow 200ms ease 0s;"><div style="width: 14px; height: 14px; border-radius: 44px; background: white; transition: transform 200ms ease-out 0s, background 200ms ease-out 0s; transform: translateX(0px) translateY(0px);"></div></div></div></div>';
        document.body.classList.remove('dark');
        __console.environment.ThemeStore.setState({ mode: 'light' });
      }
      function toggle() {
        if (document.body.classList.contains('dark')) {
          onLight();
        } else {
          onDark();
        }
      }
      function addDarkModeButton(device) {
        const nav = device === 'web' ? document.querySelector('.notion-topbar').firstChild : document.querySelector('.notion-topbar-mobile');
        el.className = 'toggle-mode';
        el.addEventListener('click', toggle);
        nav.appendChild(el);
        onLight();
      }
      const observer = new MutationObserver(function() {
        if (redirected) return;
        const nav = document.querySelector('.notion-topbar');
        const mobileNav = document.querySelector('.notion-topbar-mobile');
        if (nav && nav.firstChild && nav.firstChild.firstChild
          || mobileNav && mobileNav.firstChild) {
          redirected = true;
          updateSlug();
          addDarkModeButton(nav ? 'web' : 'mobile');
          const onpopstate = window.onpopstate;
          window.onpopstate = function() {
            if (slugs.includes(getSlug())) {
              const page = SLUG_TO_PAGE[getSlug()];
              if (page) {
                history.replaceState(history.state, 'bypass', '/' + page);
              }
            }
            onpopstate.apply(this, [].slice.call(arguments));
            updateSlug();
          };
        }
      });
      observer.observe(document.querySelector('#notion-app'), {
        childList: true,
        subtree: true,
      });
      const replaceState = window.history.replaceState;
      window.history.replaceState = function(state) {
        if (arguments[1] !== 'bypass' && slugs.includes(getSlug())) return;
        return replaceState.apply(window.history, arguments);
      };
      const pushState = window.history.pushState;
      window.history.pushState = function(state) {
        const dest = new URL(location.protocol + location.host + arguments[2]);
        const id = dest.pathname.slice(-32);
        if (pages.includes(id)) {
          arguments[2] = '/' + PAGE_TO_SLUG[id];
        }
        return pushState.apply(window.history, arguments);
      };
      const open = window.XMLHttpRequest.prototype.open;
      window.XMLHttpRequest.prototype.open = function() {
        arguments[1] = arguments[1].replace('${MY_DOMAIN}', 'www.notion.so');
        return open.apply(this, [].slice.call(arguments));
      };
    </script>${CUSTOM_SCRIPT}`, {
        html: true
      });
    }
  }
  
  async function appendJavascript(res, SLUG_TO_PAGE) {
    return new HTMLRewriter()
      .on('title', new MetaRewriter())
      .on('meta', new MetaRewriter())
      .on('head', new HeadRewriter())
      .on('body', new BodyRewriter(SLUG_TO_PAGE))
      .transform(res);
  }

/* CONFIGURATION STARTS HERE */

/* Step 1: enter your domain name like fruitionsite.com */
const MY_DOMAIN = "halfnaan.com";

/*
 * Step 2: enter your URL slug to page ID mapping
 * The key on the left is the slug (without the slash)
 * The value on the right is the Notion page ID
 */
const SLUG_TO_PAGE = {
  "": "e80280dc25b74620bd5656551c7f1a37",
  'research': "79a015b3389f44ea95cd199ea63a1511",
  'design': "f315f5abe00e4e5b85ab5afc352c37ec",
  'handoff': "3357837507954204b5c7e6406df8fb10",
  'promoting-sustainable-harvesting': "e3a83a40cd42433bb23263cfbdf95dfb",
  'transparent-aligners': "<https://afnaan.notion.site/Transparency-in-Clear-Aligners-c8fd8c2a799f4825bb1b56d2aa24542c>",
};

const ERROR_PAGE = '';

/* Step 3: enter your page title and description for SEO purposes */
const PAGE_TITLE = "Afnan Nazer";
const PAGE_DESCRIPTION =
  "A multidisciplinary UX Consultant with a passion for scaling Human Centered Design.";

/* Step 4: enter a Google Font name, you can choose from <https://fonts.google.com> */
const GOOGLE_FONT = "";

const FAVICON_URL = '<https://drive.google.com/uc?id=1YVoe0aDOc9hzD6De2B-nJ8GIxud6VlLX>';
const IOS_ICON_URL = '<https://drive.google.com/uc?id=1qomDI-OFRbBRxCHythxIsbdsZyBcie6R>';
const OG_URL = '<https://halfnaan.com>';
const OG_TYPE = 'website';
const OG_IMAGE_URL = '<https://i.imgur.com/UEF9aMV.jpeg>';

/* Step 5: enter any custom scripts you'd like */
const CUSTOM_SCRIPT = `<script async src="<https://www.googletagmanager.com/gtag/js?id=G-6HS6NSV01L>"></script>
<script>window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments);}gtag('js', new Date());gtag('config', 'G-6HS6NSV01L');</script>`;
const CUSTOM_CSS = '.notion-frame > div > div > div > div > div > img{display:none!important;};'

/* CONFIGURATION ENDS HERE */

const PAGE_TO_SLUG = {};
const slugs = [];
const pages = [];
Object.keys(SLUG_TO_PAGE).forEach(slug => {
  const page = SLUG_TO_PAGE[slug];
  slugs.push(slug);
  pages.push(page);
  PAGE_TO_SLUG[page] = slug;
});

addEventListener("fetch", event => {
  event.respondWith(fetchAndApply(event.request));
});

function generateSitemap() {
  let sitemap = '<urlset xmlns="<http://www.sitemaps.org/schemas/sitemap/0.9>">';
  slugs.forEach(
    (slug) =>
      (sitemap +=
        "<url><loc>https://" + MY_DOMAIN + "/" + slug + "</loc></url>")
  );
  sitemap += "</urlset>";
  return sitemap;
}

const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Methods": "GET, HEAD, POST, PUT, OPTIONS",
  "Access-Control-Allow-Headers": "Content-Type"
};

function handleOptions(request) {
  if (
    request.headers.get("Origin") !== null &&
    request.headers.get("Access-Control-Request-Method") !== null &&
    request.headers.get("Access-Control-Request-Headers") !== null
  ) {
    // Handle CORS pre-flight request.
    return new Response(null, {
      headers: corsHeaders
    });
  } else {
    // Handle standard OPTIONS request.
    return new Response(null, {
      headers: {
        Allow: "GET, HEAD, POST, PUT, OPTIONS"
      }
    });
  }
}

async function fetchAndApply(request) {
  if (request.method === "OPTIONS") {
    return handleOptions(request);
  }
  let url = new URL(request.url);
  url.hostname = 'www.notion.so';
  if (url.pathname === "/robots.txt") {
    return new Response("Sitemap: https://" + MY_DOMAIN + "/sitemap.xml");
  }
  if (url.pathname === "/sitemap.xml") {
    let response = new Response(generateSitemap());
    response.headers.set("content-type", "application/xml");
    return response;
  }
  let response;
  if (url.pathname.startsWith("/app") && url.pathname.endsWith("js")) {
    response = await fetch(url.toString());
    let body = await response.text();
    response = new Response(
      body
        .replace(/www.notion.so/g, MY_DOMAIN)
        .replace(/notion.so/g, MY_DOMAIN),
      response
    );
    response.headers.set("Content-Type", "application/x-javascript");
    return response;
  } else if (url.pathname.startsWith("/api")) {
    // Forward API
    response = await fetch(url.toString(), {
      body: url.pathname.startsWith('/api/v3/getPublicPageData') ? null : request.body,
      headers: {
        "content-type": "application/json;charset=UTF-8",
        "user-agent":
          "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36"
      },
      method: "POST"
    });
    response = new Response(response.body, response);
    response.headers.set("Access-Control-Allow-Origin", "*");

    return response;
  } else if (slugs.indexOf(url.pathname.slice(1)) > -1) {
    const pageId = SLUG_TO_PAGE[url.pathname.slice(1)];
    return Response.redirect("https://" + MY_DOMAIN + "/" + pageId, 301);
  } else if (
    pages.indexOf(url.pathname.slice(1)) === -1 &&
    url.pathname.slice(1).match(/[0-9a-f]{32}/)
  ) {
    return Response.redirect('https://' + MY_DOMAIN, 301);
  } else {
    response = await fetch(url.toString(), {
      body: request.body,
      headers: request.headers,
      method: request.method
    });
    response = new Response(response.body, response);
    response.headers.delete("Content-Security-Policy");
    response.headers.delete("X-Content-Security-Policy");
  }

  return appendJavascript(response, SLUG_TO_PAGE);
}

class MetaRewriter {
  element(element) {
    if (PAGE_TITLE !== "") {
      if (
        element.getAttribute("property") === "og:title" ||
        element.getAttribute('property') === 'og:site_name' ||
        element.getAttribute("name") === "twitter:title"
      ) {
        element.setAttribute("content", PAGE_TITLE);
      }
      if (element.tagName === "title") {
        element.setInnerContent(PAGE_TITLE);
      }
    }
    if (PAGE_DESCRIPTION !== "") {
      if (
        element.getAttribute("name") === "description" ||
        element.getAttribute("property") === "og:description" ||
        element.getAttribute("name") === "twitter:description"
      ) {
        element.setAttribute("content", PAGE_DESCRIPTION);
      }
    }
    if (element.getAttribute('property') === 'og:url') {
      element.setAttribute('content', OG_URL);
    }
    if (element.getAttribute('name') === 'apple-itunes-app') {
      element.remove();
    }
    if (element.getAttribute('property') === 'og:type') {
      element.setAttribute('content', OG_TYPE);
    }
    if (element.getAttribute('property') === 'og:image') {
      element.setAttribute('content', OG_IMAGE_URL);
    }
    if (element.tagName === 'link' && element.getAttribute('rel') === 'shortcut icon') {
      element.setAttribute('href', FAVICON_URL);
    }
    if (element.tagName === 'link' && element.getAttribute('rel') === 'apple-touch-icon') {
      element.setAttribute('href', IOS_ICON_URL);
    }/*
    if (element.getAttribute('name') === 'twitter:card') {
      element.setAttribute('content', META_TWITTER_CARD);
    }
    if (element.getAttribute('name') === 'twitter:site') {
      element.setAttribute('content', META_TWITTER_SITE);
    }
    if (element.getAttribute('name') === 'twitter:image') {
      element.setAttribute('content', META_TWITTER_IMAGE);
    }
    if (element.getAttribute('name') === 'twitter:url') {
      element.setAttribute('content', META_TWITTER_URL);
    }*/
  }
}

class HeadRewriter {
  element(element) {
    if (GOOGLE_FONT !== "") {
      element.append(
        `<link href='<https://fonts.googleapis.com/css?family=$>{GOOGLE_FONT.replace(' ', '+')}:Regular,Bold,Italic&display=swap' rel='stylesheet'>
        <style>* { font-family: "${GOOGLE_FONT}" !important; }</style>`,
        {
          html: true
        }
      );
    }
    element.append(
      `<style>
      div.notion-topbar > div > div:nth-child(3) { display: none !important; }
      div.notion-topbar > div > div:nth-child(4) { display: none !important; }
      div.notion-topbar > div > div:nth-child(5) { display: none !important; }
      div.notion-topbar > div > div:nth-child(6) { display: none !important; }
      div.notion-topbar-mobile > div:nth-child(3) { display: none !important; }
      div.notion-topbar-mobile > div:nth-child(4) { display: none !important; }
      div.notion-topbar > div > div:nth-child(1n).toggle-mode { display: block !important; }
      div.notion-topbar-mobile > div:nth-child(1n).toggle-mode { display: block !important; }
      </style>`,
      {
        html: true
      }
    );
  }
}

class BodyRewriter {
  constructor(SLUG_TO_PAGE) {
    this.SLUG_TO_PAGE = SLUG_TO_PAGE;
  }
  element(element) {
    element.append(
      `<script>
      window.CONFIG.domainBaseUrl = '<https://$>{MY_DOMAIN}';
      const SLUG_TO_PAGE = ${JSON.stringify(this.SLUG_TO_PAGE)};
      const PAGE_TO_SLUG = {};
      const slugs = [];
      const pages = [];
      const el = document.createElement('div');
      let redirected = false;
      Object.keys(SLUG_TO_PAGE).forEach(slug => {
        const page = SLUG_TO_PAGE[slug];
        slugs.push(slug);
        pages.push(page);
        PAGE_TO_SLUG[page] = slug;
      });
      function getPage() {
        return location.pathname.slice(-32);
      }
      function getSlug() {
        return location.pathname.slice(1);
      }
      function updateSlug() {
        const slug = PAGE_TO_SLUG[getPage()];
        if (slug != null) {
          history.replaceState(history.state, '', '/' + slug);
        }
      }
      function onDark() {
        el.innerHTML = '<div title="Change to Light Mode" style="margin-left: auto; margin-right: 14px; min-width: 0px;"><div role="button" tabindex="0" style="user-select: none; transition: background 120ms ease-in 0s; cursor: pointer; border-radius: 44px;"><div style="display: flex; flex-shrink: 0; height: 14px; width: 26px; border-radius: 44px; padding: 2px; box-sizing: content-box; background: rgb(46, 170, 220); transition: background 200ms ease 0s, box-shadow 200ms ease 0s;"><div style="width: 14px; height: 14px; border-radius: 44px; background: white; transition: transform 200ms ease-out 0s, background 200ms ease-out 0s; transform: translateX(12px) translateY(0px);"></div></div></div></div>';
        document.body.classList.add('dark');
        __console.environment.ThemeStore.setState({ mode: 'dark' });
      };
      function onLight() {
        el.innerHTML = '<div title="Change to Dark Mode" style="margin-left: auto; margin-right: 14px; min-width: 0px;"><div role="button" tabindex="0" style="user-select: none; transition: background 120ms ease-in 0s; cursor: pointer; border-radius: 44px;"><div style="display: flex; flex-shrink: 0; height: 14px; width: 26px; border-radius: 44px; padding: 2px; box-sizing: content-box; background: rgba(135, 131, 120, 0.3); transition: background 200ms ease 0s, box-shadow 200ms ease 0s;"><div style="width: 14px; height: 14px; border-radius: 44px; background: white; transition: transform 200ms ease-out 0s, background 200ms ease-out 0s; transform: translateX(0px) translateY(0px);"></div></div></div></div>';
        document.body.classList.remove('dark');
        __console.environment.ThemeStore.setState({ mode: 'light' });
      }
      function toggle() {
        if (document.body.classList.contains('dark')) {
          onLight();
        } else {
          onDark();
        }
      }
      function addDarkModeButton(device) {
        const nav = device === 'web' ? document.querySelector('.notion-topbar').firstChild : document.querySelector('.notion-topbar-mobile');
        el.className = 'toggle-mode';
        el.addEventListener('click', toggle);
        nav.appendChild(el);
        // enable smart dark mode based on user-preference
        if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
            onDark();
        } else {
            onLight();
        }
        // try to detect if user-preference change
        window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => {
            toggle();
        });
      }
      const observer = new MutationObserver(function() {
        if (redirected) return;
        const nav = document.querySelector('.notion-topbar');
        const mobileNav = document.querySelector('.notion-topbar-mobile');
        if (nav && nav.firstChild && nav.firstChild.firstChild
          || mobileNav && mobileNav.firstChild) {
          redirected = true;
          updateSlug();
          addDarkModeButton(nav ? 'web' : 'mobile');
          const onpopstate = window.onpopstate;
          window.onpopstate = function() {
            if (slugs.includes(getSlug())) {
              const page = SLUG_TO_PAGE[getSlug()];
              if (page) {
                history.replaceState(history.state, 'bypass', '/' + page);
              }
            }
            onpopstate.apply(this, [].slice.call(arguments));
            updateSlug();
          };
        }
      });
      observer.observe(document.querySelector('#notion-app'), {
        childList: true,
        subtree: true,
      });
      const replaceState = window.history.replaceState;
      window.history.replaceState = function(state) {
        if (arguments[1] !== 'bypass' && slugs.includes(getSlug())) return;
        return replaceState.apply(window.history, arguments);
      };
      const pushState = window.history.pushState;
      window.history.pushState = function(state) {
        const dest = new URL(location.protocol + location.host + arguments[2]);
        const id = dest.pathname.slice(-32);
        if (pages.includes(id)) {
          arguments[2] = '/' + PAGE_TO_SLUG[id];
        }
        return pushState.apply(window.history, arguments);
      };
      const open = window.XMLHttpRequest.prototype.open;
      window.XMLHttpRequest.prototype.open = function() {
        arguments[1] = arguments[1].replace('${MY_DOMAIN}', 'www.notion.so');
        return open.apply(this, [].slice.call(arguments));
      };
    </script>${CUSTOM_SCRIPT}<style>${CUSTOM_CSS}</style>`, {
      html: true
    }
    );
  }
}

async function appendJavascript(res, SLUG_TO_PAGE) {
  return new HTMLRewriter()
    .on("meta", new MetaRewriter())
    .on("title", new MetaRewriter())
    .on("head", new HeadRewriter())
    .on("body", new BodyRewriter(SLUG_TO_PAGE))
    .transform(res);
}