diff --git a/colors.js b/colors.js
index 872f33cac27..2b282c820c6 100644
--- a/colors.js
+++ b/colors.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/next-env.d.ts b/next-env.d.ts
index 52e831b4342..bc6d2a23de4 100644
--- a/next-env.d.ts
+++ b/next-env.d.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
 
diff --git a/next.config.js b/next.config.js
index 861792c8e53..5a575530716 100644
--- a/next.config.js
+++ b/next.config.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/package.json b/package.json
index 61d6cd5e4c3..8d480ad4325 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,8 @@
     "postinstall": "is-ci || husky install .husky",
     "check-all": "npm-run-all prettier lint:fix tsc rss",
     "rss": "node scripts/generateRss.js",
-    "deadlinks": "node scripts/deadLinkChecker.js"
+    "deadlinks": "node scripts/deadLinkChecker.js",
+    "copyright": "node scripts/copyright.js"
   },
   "dependencies": {
     "@codesandbox/sandpack-react": "2.13.5",
diff --git a/plugins/markdownToHtml.js b/plugins/markdownToHtml.js
index 0d5fe7afb48..e9b0c3ec32f 100644
--- a/plugins/markdownToHtml.js
+++ b/plugins/markdownToHtml.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 const remark = require('remark');
 const externalLinks = require('remark-external-links'); // Add _target and rel to external links
 const customHeaders = require('./remark-header-custom-ids'); // Custom header id's for i18n
diff --git a/plugins/remark-header-custom-ids.js b/plugins/remark-header-custom-ids.js
index 356de1bf136..c5430ce8a6d 100644
--- a/plugins/remark-header-custom-ids.js
+++ b/plugins/remark-header-custom-ids.js
@@ -1,5 +1,8 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 /*!
diff --git a/plugins/remark-smartypants.js b/plugins/remark-smartypants.js
index 4694ff67462..f56f14b612b 100644
--- a/plugins/remark-smartypants.js
+++ b/plugins/remark-smartypants.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*!
  * Based on 'silvenon/remark-smartypants'
  * https://github.com/silvenon/remark-smartypants/pull/80
diff --git a/postcss.config.js b/postcss.config.js
index d55c43c9094..6b55f927795 100644
--- a/postcss.config.js
+++ b/postcss.config.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/public/js/jsfiddle-integration-babel.js b/public/js/jsfiddle-integration-babel.js
index 56059472ff2..56133855a63 100644
--- a/public/js/jsfiddle-integration-babel.js
+++ b/public/js/jsfiddle-integration-babel.js
@@ -1,5 +1,8 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 // Do not delete or move this file.
diff --git a/public/js/jsfiddle-integration.js b/public/js/jsfiddle-integration.js
index 2151435d43c..aeae13607b9 100644
--- a/public/js/jsfiddle-integration.js
+++ b/public/js/jsfiddle-integration.js
@@ -1,5 +1,8 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 // Do not delete or move this file.
diff --git a/scripts/copyright.js b/scripts/copyright.js
new file mode 100644
index 00000000000..f1c6f786cde
--- /dev/null
+++ b/scripts/copyright.js
@@ -0,0 +1,84 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+const fs = require('fs');
+const glob = require('glob');
+
+const META_COPYRIGHT_COMMENT_BLOCK =
+  `/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */`.trim() + '\n\n';
+
+const files = glob.sync('**/*.{js,ts,tsx,jsx,rs}', {
+  ignore: [
+    '**/dist/**',
+    '**/node_modules/**',
+    '**/tests/fixtures/**',
+    '**/__tests__/fixtures/**',
+  ],
+});
+
+const updatedFiles = new Map();
+let hasErrors = false;
+files.forEach((file) => {
+  try {
+    const result = processFile(file);
+    if (result != null) {
+      updatedFiles.set(file, result);
+    }
+  } catch (e) {
+    console.error(e);
+    hasErrors = true;
+  }
+});
+if (hasErrors) {
+  console.error('Update failed');
+  process.exit(1);
+} else {
+  for (const [file, source] of updatedFiles) {
+    fs.writeFileSync(file, source, 'utf8');
+  }
+  console.log('Update complete');
+}
+
+function processFile(file) {
+  if (fs.lstatSync(file).isDirectory()) {
+    return;
+  }
+  let source = fs.readFileSync(file, 'utf8');
+  let shebang = '';
+
+  if (source.startsWith('#!')) {
+    const newlineIndex = source.indexOf('\n');
+    if (newlineIndex === -1) {
+      shebang = `${source}\n`;
+      source = '';
+    } else {
+      shebang = source.slice(0, newlineIndex + 1);
+      source = source.slice(newlineIndex + 1);
+    }
+  }
+
+  if (source.indexOf(META_COPYRIGHT_COMMENT_BLOCK) === 0) {
+    return null;
+  }
+  if (/^\/\*\*/.test(source)) {
+    source = source.replace(/\/\*\*[^\/]+\/\s+/, META_COPYRIGHT_COMMENT_BLOCK);
+  } else {
+    source = `${META_COPYRIGHT_COMMENT_BLOCK}${source}`;
+  }
+
+  if (shebang) {
+    return `${shebang}${source}`;
+  }
+  return source;
+}
diff --git a/scripts/deadLinkChecker.js b/scripts/deadLinkChecker.js
index 90593b878a6..46a21cdc9ec 100644
--- a/scripts/deadLinkChecker.js
+++ b/scripts/deadLinkChecker.js
@@ -1,4 +1,10 @@
 #!/usr/bin/env node
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
 
 const fs = require('fs');
 const path = require('path');
diff --git a/scripts/generateRss.js b/scripts/generateRss.js
index e0f3d5561dd..3231b1d7350 100644
--- a/scripts/generateRss.js
+++ b/scripts/generateRss.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/scripts/headingIDHelpers/generateHeadingIDs.js b/scripts/headingIDHelpers/generateHeadingIDs.js
index 40925d444c2..79839f513dd 100644
--- a/scripts/headingIDHelpers/generateHeadingIDs.js
+++ b/scripts/headingIDHelpers/generateHeadingIDs.js
@@ -1,5 +1,8 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 // To do: Make this ESM.
diff --git a/scripts/headingIDHelpers/validateHeadingIDs.js b/scripts/headingIDHelpers/validateHeadingIDs.js
index c3cf1ab8c81..798a63e12c5 100644
--- a/scripts/headingIDHelpers/validateHeadingIDs.js
+++ b/scripts/headingIDHelpers/validateHeadingIDs.js
@@ -1,6 +1,10 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
+
 const fs = require('fs');
 const walk = require('./walk');
 
diff --git a/scripts/headingIDHelpers/walk.js b/scripts/headingIDHelpers/walk.js
index 54cd500ca3f..f1ed5e0b311 100644
--- a/scripts/headingIDHelpers/walk.js
+++ b/scripts/headingIDHelpers/walk.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 const fs = require('fs');
 
 module.exports = function walk(dir) {
diff --git a/scripts/headingIdLinter.js b/scripts/headingIdLinter.js
index 6b8f75fc718..32116752bef 100644
--- a/scripts/headingIdLinter.js
+++ b/scripts/headingIdLinter.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 const validateHeaderIds = require('./headingIDHelpers/validateHeadingIDs');
 const generateHeadingIds = require('./headingIDHelpers/generateHeadingIDs');
 
diff --git a/src/components/Breadcrumbs.tsx b/src/components/Breadcrumbs.tsx
index e64b486d133..177af2c56a7 100644
--- a/src/components/Breadcrumbs.tsx
+++ b/src/components/Breadcrumbs.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Button.tsx b/src/components/Button.tsx
index 65c0151ba38..6b79a958f25 100644
--- a/src/components/Button.tsx
+++ b/src/components/Button.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/ButtonLink.tsx b/src/components/ButtonLink.tsx
index 23c971756bc..bd98d5b38ee 100644
--- a/src/components/ButtonLink.tsx
+++ b/src/components/ButtonLink.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/DocsFooter.tsx b/src/components/DocsFooter.tsx
index 93c2ca125ff..158a5497103 100644
--- a/src/components/DocsFooter.tsx
+++ b/src/components/DocsFooter.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/ErrorDecoderContext.tsx b/src/components/ErrorDecoderContext.tsx
index 080969efe91..77e9ebf7d5b 100644
--- a/src/components/ErrorDecoderContext.tsx
+++ b/src/components/ErrorDecoderContext.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 // Error Decoder requires reading pregenerated error message from getStaticProps,
 // but MDX component doesn't support props. So we use React Context to populate
 // the value without prop-drilling.
diff --git a/src/components/ExternalLink.tsx b/src/components/ExternalLink.tsx
index 13fe6d3a90e..ccd91fe9c41 100644
--- a/src/components/ExternalLink.tsx
+++ b/src/components/ExternalLink.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconArrow.tsx b/src/components/Icon/IconArrow.tsx
index 61e4e52cd6f..2d0b9fecdc6 100644
--- a/src/components/Icon/IconArrow.tsx
+++ b/src/components/Icon/IconArrow.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconArrowSmall.tsx b/src/components/Icon/IconArrowSmall.tsx
index a70717c9dc6..81301c0475c 100644
--- a/src/components/Icon/IconArrowSmall.tsx
+++ b/src/components/Icon/IconArrowSmall.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconBsky.tsx b/src/components/Icon/IconBsky.tsx
index 5d461556fb9..ec930923d39 100644
--- a/src/components/Icon/IconBsky.tsx
+++ b/src/components/Icon/IconBsky.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconCanary.tsx b/src/components/Icon/IconCanary.tsx
index 7f584fed76e..97b9f7cef21 100644
--- a/src/components/Icon/IconCanary.tsx
+++ b/src/components/Icon/IconCanary.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconChevron.tsx b/src/components/Icon/IconChevron.tsx
index 4d40330ce0e..15f34e15351 100644
--- a/src/components/Icon/IconChevron.tsx
+++ b/src/components/Icon/IconChevron.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconClose.tsx b/src/components/Icon/IconClose.tsx
index d685fb2178d..dc4ad7c72df 100644
--- a/src/components/Icon/IconClose.tsx
+++ b/src/components/Icon/IconClose.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconCodeBlock.tsx b/src/components/Icon/IconCodeBlock.tsx
index 755a2ae34a9..ba61f237ed6 100644
--- a/src/components/Icon/IconCodeBlock.tsx
+++ b/src/components/Icon/IconCodeBlock.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconCopy.tsx b/src/components/Icon/IconCopy.tsx
index 500cd4fda9c..f621346077d 100644
--- a/src/components/Icon/IconCopy.tsx
+++ b/src/components/Icon/IconCopy.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconDeepDive.tsx b/src/components/Icon/IconDeepDive.tsx
index dfe1a928cae..121391f3309 100644
--- a/src/components/Icon/IconDeepDive.tsx
+++ b/src/components/Icon/IconDeepDive.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconDownload.tsx b/src/components/Icon/IconDownload.tsx
index c0e7f49c21a..be551d83e69 100644
--- a/src/components/Icon/IconDownload.tsx
+++ b/src/components/Icon/IconDownload.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconError.tsx b/src/components/Icon/IconError.tsx
index f101f62b225..966777fd446 100644
--- a/src/components/Icon/IconError.tsx
+++ b/src/components/Icon/IconError.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconExperimental.tsx b/src/components/Icon/IconExperimental.tsx
index c0f69e3f95f..c0dce97f46b 100644
--- a/src/components/Icon/IconExperimental.tsx
+++ b/src/components/Icon/IconExperimental.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconFacebookCircle.tsx b/src/components/Icon/IconFacebookCircle.tsx
index 7f1080afa1e..dea2764d551 100644
--- a/src/components/Icon/IconFacebookCircle.tsx
+++ b/src/components/Icon/IconFacebookCircle.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconGitHub.tsx b/src/components/Icon/IconGitHub.tsx
index 1852f52f1da..06c8f15564a 100644
--- a/src/components/Icon/IconGitHub.tsx
+++ b/src/components/Icon/IconGitHub.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconHamburger.tsx b/src/components/Icon/IconHamburger.tsx
index 8bc90ee0c22..5ab29fa37eb 100644
--- a/src/components/Icon/IconHamburger.tsx
+++ b/src/components/Icon/IconHamburger.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconHint.tsx b/src/components/Icon/IconHint.tsx
index b802bc79c06..802382b5d15 100644
--- a/src/components/Icon/IconHint.tsx
+++ b/src/components/Icon/IconHint.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconInstagram.tsx b/src/components/Icon/IconInstagram.tsx
index 79def08e325..00d25a909da 100644
--- a/src/components/Icon/IconInstagram.tsx
+++ b/src/components/Icon/IconInstagram.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconLink.tsx b/src/components/Icon/IconLink.tsx
index e6e716d0052..0f7d4dfed22 100644
--- a/src/components/Icon/IconLink.tsx
+++ b/src/components/Icon/IconLink.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconNavArrow.tsx b/src/components/Icon/IconNavArrow.tsx
index f61175e9b5e..40fde8afeab 100644
--- a/src/components/Icon/IconNavArrow.tsx
+++ b/src/components/Icon/IconNavArrow.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconNewPage.tsx b/src/components/Icon/IconNewPage.tsx
index dfa13bac951..aaf3e8157b3 100644
--- a/src/components/Icon/IconNewPage.tsx
+++ b/src/components/Icon/IconNewPage.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconNote.tsx b/src/components/Icon/IconNote.tsx
index 1510c91c7e7..82ed947b447 100644
--- a/src/components/Icon/IconNote.tsx
+++ b/src/components/Icon/IconNote.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconPitfall.tsx b/src/components/Icon/IconPitfall.tsx
index ee62478913f..a80fc7d68f0 100644
--- a/src/components/Icon/IconPitfall.tsx
+++ b/src/components/Icon/IconPitfall.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconRestart.tsx b/src/components/Icon/IconRestart.tsx
index b4a6b62f5ec..976203c65c9 100644
--- a/src/components/Icon/IconRestart.tsx
+++ b/src/components/Icon/IconRestart.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconRocket.tsx b/src/components/Icon/IconRocket.tsx
index 457736c7c55..c5bb2473a9b 100644
--- a/src/components/Icon/IconRocket.tsx
+++ b/src/components/Icon/IconRocket.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconRss.tsx b/src/components/Icon/IconRss.tsx
index 6208236f46d..13029ec9630 100644
--- a/src/components/Icon/IconRss.tsx
+++ b/src/components/Icon/IconRss.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconSearch.tsx b/src/components/Icon/IconSearch.tsx
index 917513561a5..1dda00eb26e 100644
--- a/src/components/Icon/IconSearch.tsx
+++ b/src/components/Icon/IconSearch.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconSolution.tsx b/src/components/Icon/IconSolution.tsx
index 668e41afe20..b0f1d44b38c 100644
--- a/src/components/Icon/IconSolution.tsx
+++ b/src/components/Icon/IconSolution.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconTerminal.tsx b/src/components/Icon/IconTerminal.tsx
index 7b3a97a8cbc..66dfd47b77d 100644
--- a/src/components/Icon/IconTerminal.tsx
+++ b/src/components/Icon/IconTerminal.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconThreads.tsx b/src/components/Icon/IconThreads.tsx
index 9ea0bafdf3b..72ded5201ce 100644
--- a/src/components/Icon/IconThreads.tsx
+++ b/src/components/Icon/IconThreads.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconTwitter.tsx b/src/components/Icon/IconTwitter.tsx
index e84971f4eee..01802c253f7 100644
--- a/src/components/Icon/IconTwitter.tsx
+++ b/src/components/Icon/IconTwitter.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Icon/IconWarning.tsx b/src/components/Icon/IconWarning.tsx
index 83534ec5f11..90b7cd41e6a 100644
--- a/src/components/Icon/IconWarning.tsx
+++ b/src/components/Icon/IconWarning.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Feedback.tsx b/src/components/Layout/Feedback.tsx
index 34db728ced2..fe927251709 100644
--- a/src/components/Layout/Feedback.tsx
+++ b/src/components/Layout/Feedback.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Footer.tsx b/src/components/Layout/Footer.tsx
index 9cdf256fb17..d11e1469d02 100644
--- a/src/components/Layout/Footer.tsx
+++ b/src/components/Layout/Footer.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/HomeContent.js b/src/components/Layout/HomeContent.js
index 12fe32106e1..3cf7d5c2c53 100644
--- a/src/components/Layout/HomeContent.js
+++ b/src/components/Layout/HomeContent.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Page.tsx b/src/components/Layout/Page.tsx
index c3224e5174a..89c25f46f31 100644
--- a/src/components/Layout/Page.tsx
+++ b/src/components/Layout/Page.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Sidebar/SidebarButton.tsx b/src/components/Layout/Sidebar/SidebarButton.tsx
index dc1f29a8d46..744172becb8 100644
--- a/src/components/Layout/Sidebar/SidebarButton.tsx
+++ b/src/components/Layout/Sidebar/SidebarButton.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Sidebar/SidebarLink.tsx b/src/components/Layout/Sidebar/SidebarLink.tsx
index aadb6cf4de5..5c01fefc3b4 100644
--- a/src/components/Layout/Sidebar/SidebarLink.tsx
+++ b/src/components/Layout/Sidebar/SidebarLink.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Sidebar/SidebarRouteTree.tsx b/src/components/Layout/Sidebar/SidebarRouteTree.tsx
index 72003df74f2..863355bfdc8 100644
--- a/src/components/Layout/Sidebar/SidebarRouteTree.tsx
+++ b/src/components/Layout/Sidebar/SidebarRouteTree.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Sidebar/index.tsx b/src/components/Layout/Sidebar/index.tsx
index d0e29154756..69664e6bc76 100644
--- a/src/components/Layout/Sidebar/index.tsx
+++ b/src/components/Layout/Sidebar/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/SidebarNav/SidebarNav.tsx b/src/components/Layout/SidebarNav/SidebarNav.tsx
index 17127096035..77beb4d7298 100644
--- a/src/components/Layout/SidebarNav/SidebarNav.tsx
+++ b/src/components/Layout/SidebarNav/SidebarNav.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/SidebarNav/index.tsx b/src/components/Layout/SidebarNav/index.tsx
index b268bbd294b..f9680d803f8 100644
--- a/src/components/Layout/SidebarNav/index.tsx
+++ b/src/components/Layout/SidebarNav/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/Toc.tsx b/src/components/Layout/Toc.tsx
index 5308c602ce5..e2e2169fd53 100644
--- a/src/components/Layout/Toc.tsx
+++ b/src/components/Layout/Toc.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/TopNav/BrandMenu.tsx b/src/components/Layout/TopNav/BrandMenu.tsx
index 3bd8776f22b..218e423ce30 100644
--- a/src/components/Layout/TopNav/BrandMenu.tsx
+++ b/src/components/Layout/TopNav/BrandMenu.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import * as ContextMenu from '@radix-ui/react-context-menu';
 import {IconCopy} from 'components/Icon/IconCopy';
 import {IconDownload} from 'components/Icon/IconDownload';
diff --git a/src/components/Layout/TopNav/TopNav.tsx b/src/components/Layout/TopNav/TopNav.tsx
index a4b431189e4..148098933d5 100644
--- a/src/components/Layout/TopNav/TopNav.tsx
+++ b/src/components/Layout/TopNav/TopNav.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/TopNav/index.tsx b/src/components/Layout/TopNav/index.tsx
index 8472fb126d1..e76fa5ed0dc 100644
--- a/src/components/Layout/TopNav/index.tsx
+++ b/src/components/Layout/TopNav/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/getRouteMeta.tsx b/src/components/Layout/getRouteMeta.tsx
index b3d14725d46..5a85a3e21b5 100644
--- a/src/components/Layout/getRouteMeta.tsx
+++ b/src/components/Layout/getRouteMeta.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Layout/useTocHighlight.tsx b/src/components/Layout/useTocHighlight.tsx
index 544396c68b7..02385409ff6 100644
--- a/src/components/Layout/useTocHighlight.tsx
+++ b/src/components/Layout/useTocHighlight.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Logo.tsx b/src/components/Logo.tsx
index 8c4f7da4f92..3ea4ba9ac89 100644
--- a/src/components/Logo.tsx
+++ b/src/components/Logo.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/BlogCard.tsx b/src/components/MDX/BlogCard.tsx
index 1a16013a20a..479617bed49 100644
--- a/src/components/MDX/BlogCard.tsx
+++ b/src/components/MDX/BlogCard.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Challenges/Challenge.tsx b/src/components/MDX/Challenges/Challenge.tsx
index e54bf920a82..8129ecb2ab1 100644
--- a/src/components/MDX/Challenges/Challenge.tsx
+++ b/src/components/MDX/Challenges/Challenge.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Challenges/Challenges.tsx b/src/components/MDX/Challenges/Challenges.tsx
index 21fc6865c02..1b5dcfb1f06 100644
--- a/src/components/MDX/Challenges/Challenges.tsx
+++ b/src/components/MDX/Challenges/Challenges.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Challenges/Navigation.tsx b/src/components/MDX/Challenges/Navigation.tsx
index b4d8c0924c4..0511bd05adc 100644
--- a/src/components/MDX/Challenges/Navigation.tsx
+++ b/src/components/MDX/Challenges/Navigation.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Challenges/index.tsx b/src/components/MDX/Challenges/index.tsx
index 413fd461120..27e3df1ef0d 100644
--- a/src/components/MDX/Challenges/index.tsx
+++ b/src/components/MDX/Challenges/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/CodeBlock/CodeBlock.tsx b/src/components/MDX/CodeBlock/CodeBlock.tsx
index 42165c57d83..3eeac394523 100644
--- a/src/components/MDX/CodeBlock/CodeBlock.tsx
+++ b/src/components/MDX/CodeBlock/CodeBlock.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/CodeBlock/index.tsx b/src/components/MDX/CodeBlock/index.tsx
index 551c1d1b668..d3ed3a0659c 100644
--- a/src/components/MDX/CodeBlock/index.tsx
+++ b/src/components/MDX/CodeBlock/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/CodeDiagram.tsx b/src/components/MDX/CodeDiagram.tsx
index 2a198fc56a5..ba18ae973f4 100644
--- a/src/components/MDX/CodeDiagram.tsx
+++ b/src/components/MDX/CodeDiagram.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/ConsoleBlock.tsx b/src/components/MDX/ConsoleBlock.tsx
index 6044b137070..1847abc5c98 100644
--- a/src/components/MDX/ConsoleBlock.tsx
+++ b/src/components/MDX/ConsoleBlock.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Diagram.tsx b/src/components/MDX/Diagram.tsx
index 649f48dff8c..579c86ebec9 100644
--- a/src/components/MDX/Diagram.tsx
+++ b/src/components/MDX/Diagram.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/DiagramGroup.tsx b/src/components/MDX/DiagramGroup.tsx
index 6c5130a3dc9..8e3bf46c3f9 100644
--- a/src/components/MDX/DiagramGroup.tsx
+++ b/src/components/MDX/DiagramGroup.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/ErrorDecoder.tsx b/src/components/MDX/ErrorDecoder.tsx
index a9b7455df91..423790198bf 100644
--- a/src/components/MDX/ErrorDecoder.tsx
+++ b/src/components/MDX/ErrorDecoder.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {useEffect, useState} from 'react';
 import {useErrorDecoderParams} from '../ErrorDecoderContext';
 import cn from 'classnames';
diff --git a/src/components/MDX/ExpandableCallout.tsx b/src/components/MDX/ExpandableCallout.tsx
index 41d3d65d9fe..ba93d3e270b 100644
--- a/src/components/MDX/ExpandableCallout.tsx
+++ b/src/components/MDX/ExpandableCallout.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/ExpandableExample.tsx b/src/components/MDX/ExpandableExample.tsx
index 1e709e4839c..c11cd6c3ccc 100644
--- a/src/components/MDX/ExpandableExample.tsx
+++ b/src/components/MDX/ExpandableExample.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Heading.tsx b/src/components/MDX/Heading.tsx
index a9f3efc3809..5890a3a4842 100644
--- a/src/components/MDX/Heading.tsx
+++ b/src/components/MDX/Heading.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/InlineCode.tsx b/src/components/MDX/InlineCode.tsx
index 5759a7c0ae5..17e4683b99d 100644
--- a/src/components/MDX/InlineCode.tsx
+++ b/src/components/MDX/InlineCode.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Intro.tsx b/src/components/MDX/Intro.tsx
index 0522df678c3..b0bee624d54 100644
--- a/src/components/MDX/Intro.tsx
+++ b/src/components/MDX/Intro.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/LanguagesContext.tsx b/src/components/MDX/LanguagesContext.tsx
index 776a11c0d95..cd9f8881671 100644
--- a/src/components/MDX/LanguagesContext.tsx
+++ b/src/components/MDX/LanguagesContext.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Link.tsx b/src/components/MDX/Link.tsx
index 7bf041e565a..8a47c401f2e 100644
--- a/src/components/MDX/Link.tsx
+++ b/src/components/MDX/Link.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/MDXComponents.tsx b/src/components/MDX/MDXComponents.tsx
index afcb9c265e6..7a258370ce1 100644
--- a/src/components/MDX/MDXComponents.tsx
+++ b/src/components/MDX/MDXComponents.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/PackageImport.tsx b/src/components/MDX/PackageImport.tsx
index 5e2da820e55..222353ff577 100644
--- a/src/components/MDX/PackageImport.tsx
+++ b/src/components/MDX/PackageImport.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Recap.tsx b/src/components/MDX/Recap.tsx
index d91ed48b48f..293304367de 100644
--- a/src/components/MDX/Recap.tsx
+++ b/src/components/MDX/Recap.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/ClearButton.tsx b/src/components/MDX/Sandpack/ClearButton.tsx
index 868f9fb6607..be7451ab3f8 100644
--- a/src/components/MDX/Sandpack/ClearButton.tsx
+++ b/src/components/MDX/Sandpack/ClearButton.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/Console.tsx b/src/components/MDX/Sandpack/Console.tsx
index b5276fc1379..3417e11f123 100644
--- a/src/components/MDX/Sandpack/Console.tsx
+++ b/src/components/MDX/Sandpack/Console.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/CustomPreset.tsx b/src/components/MDX/Sandpack/CustomPreset.tsx
index 7d6e566d270..4a241c87cbf 100644
--- a/src/components/MDX/Sandpack/CustomPreset.tsx
+++ b/src/components/MDX/Sandpack/CustomPreset.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/DownloadButton.tsx b/src/components/MDX/Sandpack/DownloadButton.tsx
index 94cf13ddc37..b51627d89ba 100644
--- a/src/components/MDX/Sandpack/DownloadButton.tsx
+++ b/src/components/MDX/Sandpack/DownloadButton.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/ErrorMessage.tsx b/src/components/MDX/Sandpack/ErrorMessage.tsx
index 7c67ee4617e..3dbeb113b70 100644
--- a/src/components/MDX/Sandpack/ErrorMessage.tsx
+++ b/src/components/MDX/Sandpack/ErrorMessage.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/LoadingOverlay.tsx b/src/components/MDX/Sandpack/LoadingOverlay.tsx
index de883629cea..1945f0c6f4f 100644
--- a/src/components/MDX/Sandpack/LoadingOverlay.tsx
+++ b/src/components/MDX/Sandpack/LoadingOverlay.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {useState} from 'react';
 
 import {
diff --git a/src/components/MDX/Sandpack/NavigationBar.tsx b/src/components/MDX/Sandpack/NavigationBar.tsx
index d115868dd1a..3fe743a2d24 100644
--- a/src/components/MDX/Sandpack/NavigationBar.tsx
+++ b/src/components/MDX/Sandpack/NavigationBar.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/OpenInCodeSandboxButton.tsx b/src/components/MDX/Sandpack/OpenInCodeSandboxButton.tsx
index a27122ed60c..83b968fabf7 100644
--- a/src/components/MDX/Sandpack/OpenInCodeSandboxButton.tsx
+++ b/src/components/MDX/Sandpack/OpenInCodeSandboxButton.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/OpenInTypeScriptPlayground.tsx b/src/components/MDX/Sandpack/OpenInTypeScriptPlayground.tsx
index 7284912e34b..ca0286530e4 100644
--- a/src/components/MDX/Sandpack/OpenInTypeScriptPlayground.tsx
+++ b/src/components/MDX/Sandpack/OpenInTypeScriptPlayground.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/Preview.tsx b/src/components/MDX/Sandpack/Preview.tsx
index e4fe0afe443..ead9341b6e3 100644
--- a/src/components/MDX/Sandpack/Preview.tsx
+++ b/src/components/MDX/Sandpack/Preview.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/ReloadButton.tsx b/src/components/MDX/Sandpack/ReloadButton.tsx
index f828a6c2dd2..71a25ea475e 100644
--- a/src/components/MDX/Sandpack/ReloadButton.tsx
+++ b/src/components/MDX/Sandpack/ReloadButton.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/SandpackRoot.tsx b/src/components/MDX/Sandpack/SandpackRoot.tsx
index 67f40d0b3b3..48d8daee50e 100644
--- a/src/components/MDX/Sandpack/SandpackRoot.tsx
+++ b/src/components/MDX/Sandpack/SandpackRoot.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/Themes.tsx b/src/components/MDX/Sandpack/Themes.tsx
index 3923470ca98..8aa34dc954b 100644
--- a/src/components/MDX/Sandpack/Themes.tsx
+++ b/src/components/MDX/Sandpack/Themes.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/createFileMap.ts b/src/components/MDX/Sandpack/createFileMap.ts
index 193b07be825..323f936e7c7 100644
--- a/src/components/MDX/Sandpack/createFileMap.ts
+++ b/src/components/MDX/Sandpack/createFileMap.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/index.tsx b/src/components/MDX/Sandpack/index.tsx
index 6755ba8de69..08e7dd6f0b4 100644
--- a/src/components/MDX/Sandpack/index.tsx
+++ b/src/components/MDX/Sandpack/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/Sandpack/runESLint.tsx b/src/components/MDX/Sandpack/runESLint.tsx
index 5fea2f11006..a0b8354612b 100644
--- a/src/components/MDX/Sandpack/runESLint.tsx
+++ b/src/components/MDX/Sandpack/runESLint.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 // @ts-nocheck
 
 import {Linter} from 'eslint/lib/linter/linter';
diff --git a/src/components/MDX/Sandpack/template.ts b/src/components/MDX/Sandpack/template.ts
index dd6fd12bda3..358c8616eda 100644
--- a/src/components/MDX/Sandpack/template.ts
+++ b/src/components/MDX/Sandpack/template.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 export const template = {
   '/src/index.js': {
     hidden: true,
diff --git a/src/components/MDX/Sandpack/useSandpackLint.tsx b/src/components/MDX/Sandpack/useSandpackLint.tsx
index ec05fbe0d0b..479b53ee0df 100644
--- a/src/components/MDX/Sandpack/useSandpackLint.tsx
+++ b/src/components/MDX/Sandpack/useSandpackLint.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/SandpackWithHTMLOutput.tsx b/src/components/MDX/SandpackWithHTMLOutput.tsx
index 51ce28dc149..c5149deb948 100644
--- a/src/components/MDX/SandpackWithHTMLOutput.tsx
+++ b/src/components/MDX/SandpackWithHTMLOutput.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {Children, memo} from 'react';
 import InlineCode from './InlineCode';
 import Sandpack from './Sandpack';
diff --git a/src/components/MDX/SimpleCallout.tsx b/src/components/MDX/SimpleCallout.tsx
index ae259bcf573..0e124baa743 100644
--- a/src/components/MDX/SimpleCallout.tsx
+++ b/src/components/MDX/SimpleCallout.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/TeamMember.tsx b/src/components/MDX/TeamMember.tsx
index 2c2fffa734e..2d0c65537ea 100644
--- a/src/components/MDX/TeamMember.tsx
+++ b/src/components/MDX/TeamMember.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/TerminalBlock.tsx b/src/components/MDX/TerminalBlock.tsx
index 47529271619..bdcd8e46600 100644
--- a/src/components/MDX/TerminalBlock.tsx
+++ b/src/components/MDX/TerminalBlock.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/TocContext.tsx b/src/components/MDX/TocContext.tsx
index 8aeead370e9..924e6e09eed 100644
--- a/src/components/MDX/TocContext.tsx
+++ b/src/components/MDX/TocContext.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/MDX/YouWillLearnCard.tsx b/src/components/MDX/YouWillLearnCard.tsx
index d46a70277f1..20fc3b5fe25 100644
--- a/src/components/MDX/YouWillLearnCard.tsx
+++ b/src/components/MDX/YouWillLearnCard.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/PageHeading.tsx b/src/components/PageHeading.tsx
index 3f15afe9536..76054275008 100644
--- a/src/components/PageHeading.tsx
+++ b/src/components/PageHeading.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Search.tsx b/src/components/Search.tsx
index c7401487b75..24b066d70f4 100644
--- a/src/components/Search.tsx
+++ b/src/components/Search.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/Seo.tsx b/src/components/Seo.tsx
index b8a8394b61e..90604102023 100644
--- a/src/components/Seo.tsx
+++ b/src/components/Seo.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/components/SocialBanner.tsx b/src/components/SocialBanner.tsx
index ae87d2050dc..4e404adcf87 100644
--- a/src/components/SocialBanner.tsx
+++ b/src/components/SocialBanner.tsx
@@ -1,6 +1,8 @@
 /**
- * Copyright (c) Facebook, Inc. and its affiliates.
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
  *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
  */
 
 import {useRef, useEffect} from 'react';
diff --git a/src/components/Tag.tsx b/src/components/Tag.tsx
index 2e63a81f6bf..9a69d179c37 100644
--- a/src/components/Tag.tsx
+++ b/src/components/Tag.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/hooks/usePendingRoute.ts b/src/hooks/usePendingRoute.ts
index 229a36e64c4..17d7525b4f8 100644
--- a/src/hooks/usePendingRoute.ts
+++ b/src/hooks/usePendingRoute.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/404.js b/src/pages/404.js
index 2a88fc29a4e..2b5a83bafa4 100644
--- a/src/pages/404.js
+++ b/src/pages/404.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/500.js b/src/pages/500.js
index b043e35b262..552dcf77b16 100644
--- a/src/pages/500.js
+++ b/src/pages/500.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/[[...markdownPath]].js b/src/pages/[[...markdownPath]].js
index bef4508df06..cb2e23a3861 100644
--- a/src/pages/[[...markdownPath]].js
+++ b/src/pages/[[...markdownPath]].js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/_app.tsx b/src/pages/_app.tsx
index 5431f87cc9e..80a0a0f8641 100644
--- a/src/pages/_app.tsx
+++ b/src/pages/_app.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/_document.tsx b/src/pages/_document.tsx
index 6849df35d6a..21b6f4d4f77 100644
--- a/src/pages/_document.tsx
+++ b/src/pages/_document.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/pages/errors/[errorCode].tsx b/src/pages/errors/[errorCode].tsx
index c8cf28ad829..67466a1d991 100644
--- a/src/pages/errors/[errorCode].tsx
+++ b/src/pages/errors/[errorCode].tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {Fragment, useMemo} from 'react';
 import {Page} from 'components/Layout/Page';
 import {MDXComponents} from 'components/MDX/MDXComponents';
diff --git a/src/pages/errors/index.tsx b/src/pages/errors/index.tsx
index d7742f03a30..0c154039cd7 100644
--- a/src/pages/errors/index.tsx
+++ b/src/pages/errors/index.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import ErrorDecoderPage from './[errorCode]';
 export default ErrorDecoderPage;
 export {getStaticProps} from './[errorCode]';
diff --git a/src/siteConfig.js b/src/siteConfig.js
index e731dcec44f..a43fbf5fc20 100644
--- a/src/siteConfig.js
+++ b/src/siteConfig.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/types/docsearch-react-modal.d.ts b/src/types/docsearch-react-modal.d.ts
index 568ffed80c7..f169f0364ca 100644
--- a/src/types/docsearch-react-modal.d.ts
+++ b/src/types/docsearch-react-modal.d.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/analytics.ts b/src/utils/analytics.ts
index c2cc623b9f3..bd5b5f6008e 100644
--- a/src/utils/analytics.ts
+++ b/src/utils/analytics.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/compileMDX.ts b/src/utils/compileMDX.ts
index be770c29afb..807b50da592 100644
--- a/src/utils/compileMDX.ts
+++ b/src/utils/compileMDX.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 import {LanguageItem} from 'components/MDX/LanguagesContext';
 import {MDXComponents} from 'components/MDX/MDXComponents';
 
diff --git a/src/utils/finishedTranslations.ts b/src/utils/finishedTranslations.ts
index 6f509f0b5be..1bd55637a9b 100644
--- a/src/utils/finishedTranslations.ts
+++ b/src/utils/finishedTranslations.ts
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 // This is a list of languages with enough translated content.
 // Add more languages here when they have enough content.
 // Please DO NOT edit this list without a discussion in the reactjs/react.dev repo.
diff --git a/src/utils/forwardRefWithAs.tsx b/src/utils/forwardRefWithAs.tsx
index 8f8282ab16c..c5975c1993d 100644
--- a/src/utils/forwardRefWithAs.tsx
+++ b/src/utils/forwardRefWithAs.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/prepareMDX.js b/src/utils/prepareMDX.js
index 20a22577dc4..5ad0a64b018 100644
--- a/src/utils/prepareMDX.js
+++ b/src/utils/prepareMDX.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/processShim.js b/src/utils/processShim.js
index 7d8454988dd..915a9ea333c 100644
--- a/src/utils/processShim.js
+++ b/src/utils/processShim.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/rafShim.js b/src/utils/rafShim.js
index 9c3097d8fe7..f4984da8334 100644
--- a/src/utils/rafShim.js
+++ b/src/utils/rafShim.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/rss.js b/src/utils/rss.js
index 29e5511ea5b..82764351c1c 100644
--- a/src/utils/rss.js
+++ b/src/utils/rss.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/src/utils/toCommaSeparatedList.tsx b/src/utils/toCommaSeparatedList.tsx
index e95ee179928..affa1970a9d 100644
--- a/src/utils/toCommaSeparatedList.tsx
+++ b/src/utils/toCommaSeparatedList.tsx
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */
diff --git a/tailwind.config.js b/tailwind.config.js
index f31a2451677..9450cfa5965 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /*
  * Copyright (c) Facebook, Inc. and its affiliates.
  */