diff --git a/packages/docusaurus-plugin-content-blog/src/plugin-content-blog.d.ts b/packages/docusaurus-plugin-content-blog/src/plugin-content-blog.d.ts
index afe7fe519b..a3056261cf 100644
--- a/packages/docusaurus-plugin-content-blog/src/plugin-content-blog.d.ts
+++ b/packages/docusaurus-plugin-content-blog/src/plugin-content-blog.d.ts
@@ -16,7 +16,12 @@ declare module '@docusaurus/plugin-content-blog' {
     FrontMatterLastUpdate,
     TagsPluginOptions,
   } from '@docusaurus/utils';
-  import type {DocusaurusConfig, Plugin, LoadContext} from '@docusaurus/types';
+  import type {
+    DocusaurusConfig,
+    Plugin,
+    LoadContext,
+    OptionValidationContext,
+  } from '@docusaurus/types';
   import type {Item as FeedItem} from 'feed';
   import type {Overwrite} from 'utility-types';
 
@@ -666,6 +671,10 @@ declare module '@docusaurus/plugin-content-blog' {
     context: LoadContext,
     options: PluginOptions,
   ): Promise<Plugin<BlogContent>>;
+
+  export function validateOptions(
+    args: OptionValidationContext<Options | undefined, PluginOptions>,
+  ): PluginOptions;
 }
 
 declare module '@theme/BlogPostPage' {
diff --git a/packages/docusaurus-plugin-content-docs/src/plugin-content-docs.d.ts b/packages/docusaurus-plugin-content-docs/src/plugin-content-docs.d.ts
index e11340aa5b..10f4a84a3b 100644
--- a/packages/docusaurus-plugin-content-docs/src/plugin-content-docs.d.ts
+++ b/packages/docusaurus-plugin-content-docs/src/plugin-content-docs.d.ts
@@ -20,7 +20,11 @@ declare module '@docusaurus/plugin-content-docs' {
     TagMetadata,
     TagsPluginOptions,
   } from '@docusaurus/utils';
-  import type {Plugin, LoadContext} from '@docusaurus/types';
+  import type {
+    Plugin,
+    LoadContext,
+    OptionValidationContext,
+  } from '@docusaurus/types';
   import type {Overwrite, Required} from 'utility-types';
 
   export type Assets = {
@@ -559,6 +563,10 @@ declare module '@docusaurus/plugin-content-docs' {
     context: LoadContext,
     options: PluginOptions,
   ): Promise<Plugin<LoadedContent>>;
+
+  export function validateOptions(
+    args: OptionValidationContext<Options | undefined, PluginOptions>,
+  ): PluginOptions;
 }
 
 declare module '@theme/DocItem' {
diff --git a/packages/docusaurus-plugin-content-pages/src/plugin-content-pages.d.ts b/packages/docusaurus-plugin-content-pages/src/plugin-content-pages.d.ts
index e66659f8ea..d9045fd3f4 100644
--- a/packages/docusaurus-plugin-content-pages/src/plugin-content-pages.d.ts
+++ b/packages/docusaurus-plugin-content-pages/src/plugin-content-pages.d.ts
@@ -7,7 +7,11 @@
 
 declare module '@docusaurus/plugin-content-pages' {
   import type {MDXOptions} from '@docusaurus/mdx-loader';
-  import type {LoadContext, Plugin} from '@docusaurus/types';
+  import type {
+    LoadContext,
+    Plugin,
+    OptionValidationContext,
+  } from '@docusaurus/types';
   import type {FrontMatterLastUpdate, LastUpdateData} from '@docusaurus/utils';
 
   export type Assets = {
@@ -82,6 +86,10 @@ declare module '@docusaurus/plugin-content-pages' {
     context: LoadContext,
     options: PluginOptions,
   ): Promise<Plugin<LoadedContent | null>>;
+
+  export function validateOptions(
+    args: OptionValidationContext<Options | undefined, PluginOptions>,
+  ): PluginOptions;
 }
 
 declare module '@theme/MDXPage' {
diff --git a/project-words.txt b/project-words.txt
index 5a0ef4e675..5c0cd0765f 100644
--- a/project-words.txt
+++ b/project-words.txt
@@ -178,7 +178,6 @@ metastring
 metrica
 Metrika
 microdata
-Microdata
 Milnes
 mindmap
 Mindmap
diff --git a/website/docusaurus.config.ts b/website/docusaurus.config.ts
index 8aa35595d9..a1ce845153 100644
--- a/website/docusaurus.config.ts
+++ b/website/docusaurus.config.ts
@@ -282,7 +282,7 @@ export default async function createConfigAsync() {
         },
       ],
       [
-        './src/plugins/changelog/index.js',
+        './src/plugins/changelog/index.ts',
         {
           blogTitle: 'Docusaurus changelog',
           blogDescription:
diff --git a/website/src/plugins/changelog/index.js b/website/src/plugins/changelog/index.js
deleted file mode 100644
index 2636bc9b9c..0000000000
--- a/website/src/plugins/changelog/index.js
+++ /dev/null
@@ -1,160 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import path from 'path';
-import fs from 'fs-extra';
-import pluginContentBlog from '@docusaurus/plugin-content-blog';
-import {aliasedSitePath, docuHash, normalizeUrl} from '@docusaurus/utils';
-
-/**
- * Multiple versions may be published on the same day, causing the order to be
- * the reverse. Therefore, our publish time has a "fake hour" to order them.
- */
-const publishTimes = new Set();
-/**
- * @type {Record<string, {name: string, url: string,alias: string, imageURL: string}>}
- */
-const authorsMap = {};
-
-/**
- * @param {string} section
- */
-function processSection(section) {
-  const title = section
-    .match(/\n## .*/)?.[0]
-    .trim()
-    .replace('## ', '');
-  if (!title) {
-    return null;
-  }
-  const content = section
-    .replace(/\n## .*/, '')
-    .trim()
-    .replace('running_woman', 'running');
-
-  let authors = content.match(/## Committers: \d.*/s);
-  if (authors) {
-    authors = authors[0]
-      .match(/- .*/g)
-      .map(
-        (line) =>
-          line.match(
-            /- (?:(?<name>.*?) \()?\[@(?<alias>.*)\]\((?<url>.*?)\)\)?/,
-          ).groups,
-      )
-      .map((author) => ({
-        ...author,
-        name: author.name ?? author.alias,
-        imageURL: `https://github.com/${author.alias}.png`,
-      }))
-      .sort((a, b) => a.url.localeCompare(b.url));
-
-    authors.forEach((author) => {
-      authorsMap[author.alias] = author;
-    });
-  }
-  let hour = 20;
-  const date = title.match(/ \((?<date>.*)\)/)?.groups.date;
-  while (publishTimes.has(`${date}T${hour}:00`)) {
-    hour -= 1;
-  }
-  publishTimes.add(`${date}T${hour}:00`);
-
-  return {
-    title: title.replace(/ \(.*\)/, ''),
-    content: `---
-mdx:
- format: md
-date: ${`${date}T${hour}:00`}${
-      authors
-        ? `
-authors:
-${authors.map((author) => `  - '${author.alias}'`).join('\n')}`
-        : ''
-    }
----
-
-# ${title.replace(/ \(.*\)/, '')}
-
-<!-- truncate -->
-
-${content.replace(/####/g, '##')}`,
-  };
-}
-
-/**
- * @param {import('@docusaurus/types').LoadContext} context
- * @returns {import('@docusaurus/types').Plugin}
- */
-export default async function ChangelogPlugin(context, options) {
-  const generateDir = path.join(context.siteDir, 'changelog/source');
-  const blogPlugin = await pluginContentBlog.default(context, {
-    ...options,
-    path: generateDir,
-    id: 'changelog',
-    blogListComponent: '@theme/ChangelogList',
-    blogPostComponent: '@theme/ChangelogPage',
-  });
-  const changelogPath = path.join(__dirname, '../../../../CHANGELOG.md');
-  return {
-    ...blogPlugin,
-    name: 'changelog-plugin',
-    async loadContent() {
-      const fileContent = await fs.readFile(changelogPath, 'utf-8');
-      const sections = fileContent
-        .split(/(?=\n## )/)
-        .map(processSection)
-        .filter(Boolean);
-      await Promise.all(
-        sections.map((section) =>
-          fs.outputFile(
-            path.join(generateDir, `${section.title}.md`),
-            section.content,
-          ),
-        ),
-      );
-      const authorsPath = path.join(generateDir, 'authors.json');
-      await fs.outputFile(authorsPath, JSON.stringify(authorsMap, null, 2));
-      const content = await blogPlugin.loadContent();
-      content.blogPosts.forEach((post, index) => {
-        const pageIndex = Math.floor(index / options.postsPerPage);
-        post.metadata.listPageLink = normalizeUrl([
-          context.baseUrl,
-          options.routeBasePath,
-          pageIndex === 0 ? '/' : `/page/${pageIndex + 1}`,
-        ]);
-      });
-      return content;
-    },
-    configureWebpack(...args) {
-      const config = blogPlugin.configureWebpack(...args);
-      const pluginDataDirRoot = path.join(
-        context.generatedFilesDir,
-        'changelog-plugin',
-        'default',
-      );
-      // Redirect the metadata path to our folder
-      const mdxLoader = config.module.rules[0].use[0];
-      mdxLoader.options.metadataPath = (mdxPath) => {
-        // Note that metadataPath must be the same/in-sync as
-        // the path from createData for each MDX.
-        const aliasedPath = aliasedSitePath(mdxPath, context.siteDir);
-        return path.join(pluginDataDirRoot, `${docuHash(aliasedPath)}.json`);
-      };
-      return config;
-    },
-    getThemePath() {
-      return './theme';
-    },
-    getPathsToWatch() {
-      // Don't watch the generated dir
-      return [changelogPath];
-    },
-  };
-}
-
-export const {validateOptions} = pluginContentBlog;
diff --git a/website/src/plugins/changelog/index.ts b/website/src/plugins/changelog/index.ts
new file mode 100644
index 0000000000..46f5f08efb
--- /dev/null
+++ b/website/src/plugins/changelog/index.ts
@@ -0,0 +1,208 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import path from 'path';
+import fs from 'fs-extra';
+import pluginContentBlog from '@docusaurus/plugin-content-blog';
+import {aliasedSitePath, docuHash, normalizeUrl} from '@docusaurus/utils';
+
+export {validateOptions} from '@docusaurus/plugin-content-blog';
+
+/**
+ * Multiple versions may be published on the same day, causing the order to be
+ * the reverse. Therefore, our publish time has a "fake hour" to order them.
+ */
+// TODO may leak small amount of memory in multi-locale builds
+const publishTimes = new Set<string>();
+
+type Author = {name: string; url: string; alias: string; imageURL: string};
+
+type AuthorsMap = Record<string, Author>;
+
+type ChangelogEntry = {
+  title: string;
+  content: string;
+  authors: Author[];
+};
+
+function parseAuthor(committerLine: string): Author {
+  const groups = committerLine.match(
+    /- (?:(?<name>.*?) \()?\[@(?<alias>.*)\]\((?<url>.*?)\)\)?/,
+  )!.groups as {name: string; alias: string; url: string};
+
+  return {
+    ...groups,
+    name: groups.name ?? groups.alias,
+    imageURL: `https://github.com/${groups.alias}.png`,
+  };
+}
+
+function parseAuthors(content: string): Author[] {
+  const committersContent = content.match(/## Committers: \d.*/s)?.[0];
+  if (!committersContent) {
+    return [];
+  }
+  const committersLines = committersContent.match(/- .*/g)!;
+
+  const authors = committersLines
+    .map(parseAuthor)
+    .sort((a, b) => a.url.localeCompare(b.url));
+
+  return authors;
+}
+
+function createAuthorsMap(changelogEntries: ChangelogEntry[]): AuthorsMap {
+  const allAuthors = changelogEntries.flatMap((entry) => entry.authors);
+  const authorsMap: AuthorsMap = {};
+  allAuthors?.forEach((author) => {
+    authorsMap[author.alias] = author;
+  });
+  return authorsMap;
+}
+
+function toChangelogEntry(sectionContent: string): ChangelogEntry | null {
+  const title = sectionContent
+    .match(/\n## .*/)?.[0]
+    .trim()
+    .replace('## ', '');
+  if (!title) {
+    return null;
+  }
+  const content = sectionContent
+    .replace(/\n## .*/, '')
+    .trim()
+    .replace('running_woman', 'running');
+
+  const authors = parseAuthors(content);
+
+  let hour = 20;
+  const date = title.match(/ \((?<date>.*)\)/)?.groups!.date;
+  while (publishTimes.has(`${date}T${hour}:00`)) {
+    hour -= 1;
+  }
+  publishTimes.add(`${date}T${hour}:00`);
+
+  return {
+    authors,
+    title: title.replace(/ \(.*\)/, ''),
+    content: `---
+mdx:
+ format: md
+date: ${`${date}T${hour}:00`}${
+      authors.length > 0
+        ? `
+authors:
+${authors.map((author) => `  - '${author.alias}'`).join('\n')}`
+        : ''
+    }
+---
+
+# ${title.replace(/ \(.*\)/, '')}
+
+<!-- truncate -->
+
+${content.replace(/####/g, '##')}`,
+  };
+}
+
+function toChangelogEntries(fileContent: string): ChangelogEntry[] {
+  return fileContent
+    .split(/(?=\n## )/)
+    .map(toChangelogEntry)
+    .filter((s): s is ChangelogEntry => s !== null);
+}
+
+async function createBlogFiles(
+  generateDir: string,
+  changelogEntries: ChangelogEntry[],
+) {
+  await Promise.all(
+    changelogEntries.map((changelogEntry) =>
+      fs.outputFile(
+        path.join(generateDir, `${changelogEntry.title}.md`),
+        changelogEntry.content,
+      ),
+    ),
+  );
+
+  await fs.outputFile(
+    path.join(generateDir, 'authors.json'),
+    JSON.stringify(createAuthorsMap(changelogEntries), null, 2),
+  );
+}
+
+const ChangelogPlugin: typeof pluginContentBlog =
+  async function ChangelogPlugin(context, options) {
+    const generateDir = path.join(context.siteDir, 'changelog/source');
+    const blogPlugin = await pluginContentBlog(context, {
+      ...options,
+      path: generateDir,
+      id: 'changelog',
+      blogListComponent: '@theme/ChangelogList',
+      blogPostComponent: '@theme/ChangelogPage',
+    });
+    const changelogPath = path.join(__dirname, '../../../../CHANGELOG.md');
+    return {
+      ...blogPlugin,
+      name: 'changelog-plugin',
+
+      async loadContent() {
+        const fileContent = await fs.readFile(changelogPath, 'utf-8');
+        const changelogEntries = toChangelogEntries(fileContent);
+
+        // We have to create intermediate files here
+        // Unfortunately Docusaurus doesn't have yet any concept of virtual file
+        await createBlogFiles(generateDir, changelogEntries);
+
+        // Read the files we actually just wrote
+        const content = (await blogPlugin.loadContent?.())!;
+
+        content.blogPosts.forEach((post, index) => {
+          const pageIndex = Math.floor(
+            index / (options.postsPerPage as number),
+          );
+          // @ts-expect-error: TODO Docusaurus use interface declaration merging
+          post.metadata.listPageLink = normalizeUrl([
+            context.baseUrl,
+            options.routeBasePath,
+            pageIndex === 0 ? '/' : `/page/${pageIndex + 1}`,
+          ]);
+        });
+        return content;
+      },
+
+      configureWebpack(...args) {
+        const config = blogPlugin.configureWebpack?.(...args);
+        const pluginDataDirRoot = path.join(
+          context.generatedFilesDir,
+          'changelog-plugin',
+          'default',
+        );
+        // Redirect the metadata path to our folder
+        // @ts-expect-error: unsafe but works
+        const mdxLoader = config.module.rules[0].use[0];
+        mdxLoader.options.metadataPath = (mdxPath: string) => {
+          // Note that metadataPath must be the same/in-sync as
+          // the path from createData for each MDX.
+          const aliasedPath = aliasedSitePath(mdxPath, context.siteDir);
+          return path.join(pluginDataDirRoot, `${docuHash(aliasedPath)}.json`);
+        };
+        return config;
+      },
+
+      getThemePath() {
+        return './theme';
+      },
+
+      getPathsToWatch() {
+        // Don't watch the generated dir
+        return [changelogPath];
+      },
+    };
+  };
+
+export default ChangelogPlugin;