diff --git a/scripts/prerelease.sh b/scripts/prerelease.sh
index 35884c8f8e..541dfa9e0c 100644
--- a/scripts/prerelease.sh
+++ b/scripts/prerelease.sh
@@ -1,5 +1,12 @@
 #!/bin/bash
 
+##
+# Copyright (c) 2017-present, Facebook, Inc.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.
+#
+
 DOCS_VERSION_COMMAND="run version"
 
 echo "Select an option for release："
diff --git a/v1/babel.config.js b/v1/babel.config.js
index 7870ce2f71..01f49c7a2a 100644
--- a/v1/babel.config.js
+++ b/v1/babel.config.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = {
   env: {
     test: {
diff --git a/v1/jest.transform.js b/v1/jest.transform.js
index 53f44714ea..007fdfb91b 100644
--- a/v1/jest.transform.js
+++ b/v1/jest.transform.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 const babelConfig = require('./babel.config');
 
 module.exports = require('babel-jest').createTransformer(babelConfig);
diff --git a/v1/lib/__tests__/build-files.test.js b/v1/lib/__tests__/build-files.test.js
index fe524945fa..127f87fe32 100644
--- a/v1/lib/__tests__/build-files.test.js
+++ b/v1/lib/__tests__/build-files.test.js
@@ -4,6 +4,7 @@
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
  */
+
 require('@babel/polyfill');
 const filepath = require('filepath');
 const fm = require('front-matter');
diff --git a/v1/lib/server/__tests__/__fixtures__/metadata-subcategories.js b/v1/lib/server/__tests__/__fixtures__/metadata-subcategories.js
index 344e147c95..627a4ad6e4 100644
--- a/v1/lib/server/__tests__/__fixtures__/metadata-subcategories.js
+++ b/v1/lib/server/__tests__/__fixtures__/metadata-subcategories.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = {
   'en-doc1': {
     id: 'en-doc1',
diff --git a/v1/lib/server/__tests__/__fixtures__/metadata.js b/v1/lib/server/__tests__/__fixtures__/metadata.js
index 8ca4afeaf0..799694feeb 100644
--- a/v1/lib/server/__tests__/__fixtures__/metadata.js
+++ b/v1/lib/server/__tests__/__fixtures__/metadata.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = {
   'en-doc1': {
     id: 'en-doc1',
diff --git a/v1/lib/server/__tests__/__fixtures__/sidebar-subcategories.js b/v1/lib/server/__tests__/__fixtures__/sidebar-subcategories.js
index c865e679a3..9181adde65 100644
--- a/v1/lib/server/__tests__/__fixtures__/sidebar-subcategories.js
+++ b/v1/lib/server/__tests__/__fixtures__/sidebar-subcategories.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = {
   docs: {
     'First Category': ['doc1', 'doc2'],
diff --git a/v1/website/data/users.js b/v1/website/data/users.js
index 7e1edf2be2..a093093e0d 100644
--- a/v1/website/data/users.js
+++ b/v1/website/data/users.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 module.exports = [
   // Please add your logo in alphabetical order of caption.
   {
diff --git a/v1/website/static/css/code-blocks-buttons.css b/v1/website/static/css/code-blocks-buttons.css
index d83896ccd7..5988ed06d9 100644
--- a/v1/website/static/css/code-blocks-buttons.css
+++ b/v1/website/static/css/code-blocks-buttons.css
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 /* "Copy" code block button */
 pre {
   position: relative;
@@ -13,7 +20,7 @@ pre .btnIcon {
   color: #fff;
   background-color: transparent;
   height: 30px;
-  transition: all .25s ease-out;
+  transition: all 0.25s ease-out;
 }
 
 pre .btnIcon:hover {
@@ -27,7 +34,7 @@ pre .btnIcon:hover {
 
 .btnIcon svg {
   fill: currentColor;
-  margin-right: .4em;
+  margin-right: 0.4em;
 }
 
 .btnIcon__label {
diff --git a/v1/website/static/js/code-blocks-buttons.js b/v1/website/static/js/code-blocks-buttons.js
index e4fb913d98..44a9dd9c0e 100644
--- a/v1/website/static/js/code-blocks-buttons.js
+++ b/v1/website/static/js/code-blocks-buttons.js
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
 // Turn off ESLint for this file because it's sent down to users as-is.
 /* eslint-disable */
 window.addEventListener('load', function() {