Merge pull request #169 from life-itself/164-optimize-seo

[site/seo]: page speed optimization, keywords and sitemap for seo

notes/collective-action-problems-and-climate-change.md

@@ -3,7 +3,7 @@ title: Collective Action Problems & Climate Change
 created: 2022-04-13
 date: 2022-03-01
 description: 'In this episode we use the example of KlimaDAO to explore the interaction between climate change and the public goods problem.'
-image: /img/Collective Action Climate.png
+image: /img/Collective Action Climate.jpg
 youtube: https://www.youtube.com/watch?v=SLXtnCL6IxE
 podcast: https://anchor.fm/life-itself/episodes/Collective-Action-Problems--Climate-Change-e1h4o6e/a-a7gpq18
 featured: true

notes/post-state-technocracy.md

@@ -3,7 +3,7 @@ title: Web3 and Post-State Technocracy
 created: 2022-03-21
 date: 2022-02-17
 description: "In this episode we explore the aspirational transition from the existing US-led international order to a world in which blockchain technology and technocracy are the new foundations for global human governance."
-image: /img/technocracy.jpg
+image: /img/post-state-technocracy.jpg
 youtube: https://www.youtube.com/watch?v=gZ0iCJkM3PU
 podcast: https://anchor.fm/life-itself/episodes/On-Web3-and-Post-State-Technocracy-with-Stephen-Diehl--Rufus-Pollock-e1g4cpe
 featured: true

site/.gitignore

@@ -14,6 +14,7 @@
 
 # production
 /build
+public/sitemap.xml
 
 # misc
 .DS_Store

site/components/Anchor.js

@@ -1,5 +1,4 @@
 import { Tooltip } from './Tooltip';
-import siteConfig from '../config/siteConfig.js'
 
 /**
  * Component for adding previews on hovering over anchor tags with relative paths

site/components/Home/Latest.js

@@ -14,11 +14,12 @@ export function Latest({ posts }) {
         <div className="mt-12 max-w-lg mx-auto grid gap-5 lg:grid-cols-3 lg:max-w-none">
           {posts && posts.map((post) => (
             <div key={post.title} className="flex flex-col rounded-lg shadow-lg overflow-hidden">
-              <div className="flex-shrink-0">
+              {post.image ? 
-                {post.image ? <img className="h-48 w-full object-cover" src={post.image} alt={post.title} />
+                <div className="h-48 flex-shrink-0">
+                  <img className="" width="100%" height="100%" src={post.image} alt={post.title} />
+                </div>
                 : <div className="h-20 w-full bg-slate-500" />
               }
-              </div>
               <div className="flex-1 bg-slate-800 p-6 flex flex-col justify-between">
                 <div className="flex-1">
                   <p className="text-sm font-medium text-indigo-600 dark:text-yellow-500">

site/components/Layout.js

@@ -12,8 +12,6 @@ export default function Layout({ children }) {
         <meta name="viewport" content="initial-scale=1.0, width=device-width" />
         <link rel="preconnect" href="https://fonts.googleapis.com" />
         <link rel="preconnect" href="https://fonts.gstatic.com" crossOrigin="" />
-        {/* <link href="https://fonts.googleapis.com/css2?family=Nunito+Sans&display=swap" rel="stylesheet" />
-        <link href="https://fonts.googleapis.com/css2?family=Inter&display=swap" rel="stylesheet"></link> */}
       </Head>
       <Nav />
       <main>
@@ -45,7 +43,7 @@ export default function Layout({ children }) {
               target="_blank"
               rel="noopener noreferrer"
             >
-              <img src={siteConfig.authorLogo} alt={siteConfig.author} className="mx-2 h-6 inline-block" />
+              <img src={siteConfig.authorLogo} alt={siteConfig.author} width="20" height="20" className="mx-2 h-6 inline-block" />
               {siteConfig.author}
               {' '}
               Licensed under a CC-By 4.0 International License

site/components/MDX.js

@@ -1,9 +1,15 @@
 import Head from 'next/head'
-import ReactPlayer from 'react-player/lazy'
+import dynamic from 'next/dynamic'
 import { NextSeo } from 'next-seo'
 import siteConfig from "../config/siteConfig"
-import { Paragraph } from './Paragraph'
+import LiteYouTubeEmbed from "react-lite-youtube-embed"
-import { Anchor } from './Anchor'
+import { YOUTUBE_REGEX } from "../lib/constants"
+
+const Anchor = dynamic(() => import('./Anchor').then(module => module.Anchor), {
+  ssr: false
+})
+
+const Paragraph = dynamic(() => import("./Paragraph").then(mod => mod.Paragraph))
 
 const components = {
   Head,
@@ -11,30 +17,25 @@ const components = {
   a: Anchor
 }
 
-export default function MdxPage({ children, editUrl }) {
+export default function MdxPage({ children }) {
   const { Component, frontmatter: {
-    title, description, date, authors, youtube, podcast, image, _raw
+    title, description, date, keywords, youtube, podcast, image, _raw
   }} = children
 
   let youtubeThumnbnail
-  let podcastEmbed
 
-  if (youtube && !image) {
+  const youtubeId =
+    youtube && YOUTUBE_REGEX.test(youtube) && youtube.split(/^|=|\//).pop();
+
+  if (youtubeId && !image) {
     //  get the youtube thumbnail image from https://img.youtube.com/vi/<youtube-video-id>/maxresdefault.jpg
-    const regex =
+    youtubeThumnbnail = youtube.replace(
-      /\www.youtube.com\/\embed\/|youtube.com\/\embed\/|youtu.be\/|\www.youtube.com\/\watch\?v=|\youtube.com\/\watch\?v=/;
+      YOUTUBE_REGEX,
-    youtubeThumnbnail =
+      `https://img.youtube.com/vi/${youtubeId}/maxresdefault.jpg`
-      youtube.replace(regex, "img.youtube.com/vi/") + "/maxresdefault.jpg";
+    );
   }
 
-  if (podcast && podcast.includes("life-itself")) {
+  const PodcastIcon = siteConfig.social.find((s) => s.name === "Podcast").icon;
-    const podcastUrl = podcast
-    podcastEmbed = ([
-      podcastUrl.slice(0, "https://anchor.fm/life-itself".length),
-      "/embed",
-      podcastUrl.slice("https://anchor.fm/life-itself".length)
-    ].join(""))
-  }
 
   const titleFromUrl = _raw.flattenedPath
     .split("/")
@@ -48,6 +49,11 @@ export default function MdxPage({ children, editUrl }) {
     ? siteConfig.url + image
     : youtubeThumnbnail ? youtubeThumnbnail : null
   
+  // enable editing content only for claims, concepts, and guide for now
+  const editUrl = ['claims', 'concepts', 'guide'].includes(_raw.sourceFileDir)
+        ? siteConfig.repoRoot + siteConfig.repoEditPath + _raw.sourceFilePath
+        : null
+
   return (
     <>
       <NextSeo
@@ -57,6 +63,11 @@ export default function MdxPage({ children, editUrl }) {
         openGraph={{
           title: SeoTitle,
           description: description,
+          url: `${siteConfig.url}/${_raw.flattenedPath}`,
+          type: "article",
+          article: {
+            tags: keywords ? keywords.split(",") : []
+          },
           images: imageUrl
             ? ([
                 {
@@ -69,16 +80,14 @@ export default function MdxPage({ children, editUrl }) {
               ])
             : siteConfig.nextSeo.openGraph.images,
         }}
+        additionalMetaTags={[
+          { name: "keywords", content: keywords ? keywords : "" }
+        ]}
       />
       <article className="prose dark:prose-invert prose-a:break-all mx-auto p-6">
         <header>
           <div className="mb-6">
             {title && <h1 className="mb-0">{title}</h1>}
-            {authors && (
-              <div className="-mt-6">
-                <p className="opacity-60 pl-1">{authors}</p>
-              </div>
-            )}
             {date && (
               <p className="text-gray-900 dark:text-gray-500 text-sm pl-2">
                 on {date}
@@ -87,36 +96,21 @@ export default function MdxPage({ children, editUrl }) {
             {description && (
               <p className="">{description}</p>
             )}
-            {youtube && (
+            {youtubeId && (
-              <div className="relative pt-[56.25%]">
+              <LiteYouTubeEmbed id={youtubeId} />
-                <ReactPlayer
-                  className="absolute top-0 left-0"
-                  width="100%"
-                  height="100%"
-                  url={youtube}
-                />
-              </div>
             )}
             {podcast && (
               <div className="pt-4">
                 <ul className="list-disc">
                   <li>
-                    Podcast: &nbsp;
+                    <a className="flex items-center" target="_blank" rel="noopener" href={podcast}>
-                    <a href={podcast}>{podcast}</a>
+                      <div className="w-4 mr-2">
+                        <PodcastIcon />
+                      </div>
+                      <p className="m-0">Listen to this podcast</p>
+                    </a>
                   </li>
                 </ul>
-                {podcastEmbed && (
-                  <div className="md:mx-4">
-                    <iframe
-                      src={podcastEmbed}
-                      height="100px"
-                      width="100%"
-                      frameBorder="0"
-                      scrolling="no"
-                      className="rounded-md"
-                    />
-                  </div>
-                )}
               </div>
             )}
           </div>

site/components/Paragraph.js

@@ -1,30 +1,15 @@
-import ReactPlayer from "react-player";
+import LiteYouTubeEmbed from "react-lite-youtube-embed";
-
+import { YOUTUBE_REGEX } from "../lib/constants";
-const videoLinks = [
-  "youtube.com",
-  "dailymotion.com",
-  "vimeo.com",
-  "soundcloud.com",
-  "facebook.com/watch",
-  "twitch.com",
-];
 
 export const Paragraph = (props) => {
   if (
     typeof props.children == "object" &&
     props.children.props &&
     props.children.props.href &&
-    videoLinks.some((str) => props.children.props.href.includes(str))
+    YOUTUBE_REGEX.test(props.children.props.href)
-  )
+  ) {
-    return (
+    const youtubeId = props.children.props.href.split(/^|=|\//).pop();
-      <div className="relative pt-[56.25%]" {...props}>
+    return <LiteYouTubeEmbed id={youtubeId} />;
-        <ReactPlayer
+  }
-          className="absolute top-0 left-0"
-          width="100%"
-          height="100%"
-          url={props.children.props.href}
-        />
-      </div>
-    );
   return <p {...props} />;
 };

site/contentlayer.config.ts

@@ -5,6 +5,9 @@ import rehypeSlug from 'rehype-slug'
 import rehypeAutolinkHeadings from 'rehype-autolink-headings'
 import wikiLinkPlugin from "remark-wiki-link-plus"
 
+const isValidDate = dateObject => new Date(dateObject)
+    .toString() !== 'Invalid Date';
+
 const ObsidianAliases = defineNestedType(() => ({
   name: 'Obsidian',
   filePathPattern: '**/*.md*',
@@ -22,6 +25,7 @@ const OtherPage = defineDocumentType(() => ({
     date: { type: "date", description: "This will be the publication date" },
     image: { type: "string" },
     description: { type: 'string' },
+    keywords: { type: "string" },
     youtube: { type: "string" },
     podcast: { type: "string" },
     featured: { type: "boolean", default: false },
@@ -31,13 +35,19 @@ const OtherPage = defineDocumentType(() => ({
   computedFields: {
     date: {
       type: "date",
-      resolve: (doc) => new Date(doc.date).toLocaleDateString('en-US', {
+      resolve: (doc) => {
+        const formattedDate = new Date(doc.date).toLocaleDateString('en-US', {
           weekday: "long", year: "numeric", month: "long", day: "numeric"
         })
+        return isValidDate(formattedDate) ? formattedDate : null
+      }
     },
     created: {
       type: "date",
-      resolve: (doc) => new Date(doc.created).toLocaleDateString('en-US')
+      resolve: (doc) => {
+        const formattedDate = new Date(doc.created).toLocaleDateString('en-US')
+        return isValidDate(formattedDate) ? formattedDate : null
+      }
     },
   }
 }));

site/lib/constants.js

@@ -0,0 +1,2 @@
+export const YOUTUBE_REGEX =
+  /^.*((youtu.be\/)|(v\/)|(\/u\/\w\/)|(embed\/)|(watch\?))\??v?=?([^#\&\?]*).*/;

site/package.json

@@ -3,6 +3,7 @@
   "scripts": {
     "dev": "next dev",
     "build": "next build",
+    "postbuild": "NODE_OPTIONS='--experimental-json-modules' node ./scripts/generate-sitemap.mjs",
     "export": "next export",
     "start": "next start"
   },
@@ -10,34 +11,31 @@
     "@floating-ui/react-dom-interactions": "^0.6.0",
     "@headlessui/react": "^1.4.1",
     "@heroicons/react": "^1.0.4",
-    "@mdx-js/loader": "^2.0.0",
-    "@mdx-js/react": "^2.0.0",
-    "@next/mdx": "^12.1.0",
-    "@silvenon/remark-smartypants": "^1.0.0",
     "@tailwindcss/typography": "^0.5.2",
     "contentlayer": "^0.1.2",
     "framer-motion": "^6.3.3",
     "gray-matter": "^4.0.3",
-    "hast-util-to-string": "^2.0.0",
     "next": "^12.1.0",
     "next-contentlayer": "^0.1.2",
     "next-seo": "^4.28.1",
     "next-themes": "^0.1.1",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
-    "react-player": "^2.10.0",
+    "react-lite-youtube-embed": "^2.2.2",
+    "sharp": "^0.30.5"
+  },
+  "devDependencies": {
+    "autoprefixer": "^10.2.6",
+    "globby": "^13.1.1",
+    "hast-util-to-string": "^2.0.0",
+    "postcss": "^8.3.5",
+    "prettier": "^2.6.2",
     "rehype-autolink-headings": "^6.1.1",
     "rehype-slug": "^5.0.1",
     "remark-gfm": "^3.0.0",
     "remark-parse": "^10.0.1",
-    "remark-slug": "^7.0.0",
-    "remark-toc": "^8.0.0",
     "remark-wiki-link-plus": "^1.0.0",
+    "tailwindcss": "^3.0.0",
     "unist-util-find": "^1.0.2"
-  },
-  "devDependencies": {
-    "autoprefixer": "^10.2.6",
-    "postcss": "^8.3.5",
-    "tailwindcss": "^3.0.0"
   }
 }

site/pages/[...slug].js

@@ -1,7 +1,6 @@
 import MdxPage from '../components/MDX';
 import { allOtherPages } from 'contentlayer/generated';
 import { useMDXComponent } from 'next-contentlayer/hooks';
-import siteConfig from "../config/siteConfig"
 
 
 export default function Page({ body, ...rest }) {
@@ -9,19 +8,12 @@ export default function Page({ body, ...rest }) {
   const children = {
     Component,
     frontmatter: {
-      ...rest,
+      ...rest
-      date: rest.date === "Invalid Date" ? null : rest.date,
-      created: rest.created === "Invalid Date" ? null : rest.created
     },
   };
   
-  // enable editing content only for claims, concepts, and guide for now
-  const editUrl = ['claims', 'concepts', 'guide'].includes(rest._raw.sourceFileDir)
-        ? siteConfig.repoRoot + siteConfig.repoEditPath + rest._raw.sourceFilePath
-        : null
-  
   return (
-      <MdxPage children={children} editUrl={editUrl} />
+      <MdxPage children={children} />
   );
 }
 

site/pages/_app.js

@@ -5,6 +5,7 @@ import { DefaultSeo } from 'next-seo'
 import { ThemeProvider } from 'next-themes'
 
 import '../styles/global.css'
+import "react-lite-youtube-embed/dist/LiteYouTubeEmbed.css";
 import siteConfig from '../config/siteConfig.js'
 import Layout from '../components/Layout'
 import * as gtag from '../lib/gtag'

site/public/img/Collective Action Climate.jpg

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:29d50bf63165133404309fea97324eff18a7cd86a3172d39e0c3d0cd635b62fe
+size 141203

site/public/img/Collective Action Climate.png

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:df3e54f72d5eea93eda159366a0c5d561db0e259c3125c3d49e20c3da433b8ea
-size 1107869

site/public/img/post-state-technocracy.jpg

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:18bf3b1fb17ea49bd7a616d992245f40e34eba33e5e49739c1bbe32cc2970054
+size 60178

site/public/img/technocracy.jpg

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4d4728d0239c3103ca7cd6da93a0ad6d2f69f3df0f6bebeac72e44bf36105e0b
-size 27545

site/scripts/generate-sitemap.mjs

@@ -0,0 +1,45 @@
+import { writeFileSync } from "fs";
+import { globby } from "globby";
+import prettier from "prettier";
+
+async function generate() {
+  const prettierConfig = await prettier.resolveConfig("./.prettierrc.js");
+  const pages = await globby([
+    "pages/!(\\[**])*.js*",
+    "content/**/*.md*",
+    "!pages/_*.js*",
+    "!pages/api",
+    "!pages/404.js*",
+  ]);
+
+  const sitemap = `
+    <?xml version="1.0" encoding="UTF-8"?>
+    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
+        ${pages
+          .map((page) => {
+            const path = page
+              .replace("pages", "")
+              .replace("content", "")
+              .replace(/.jsx*/, "")
+              .replace(/.mdx*/, "");
+            const route = path === "/index" ? "" : path;
+            return `
+              <url>
+                  <loc>${`https://web3.lifeiteself.us${route}`}</loc>
+              </url>
+            `;
+          })
+          .join("")}
+    </urlset>
+    `;
+
+  const formatted = prettier.format(sitemap, {
+    ...prettierConfig,
+    parser: "html",
+  });
+
+  // eslint-disable-next-line no-sync
+  writeFileSync("public/sitemap.xml", formatted);
+}
+
+generate();