WordPress · aduth · Sep 17, 2018 · Sep 12, 2018 · Sep 12, 2018 · Sep 12, 2018
diff --git a/lib/client-assets.php b/lib/client-assets.php
@@ -114,6 +114,7 @@ function gutenberg_register_scripts_and_styles() {
 				'\'fetch\' in window' => 'wp-polyfill-fetch',
 				'document.contains'   => 'wp-polyfill-node-contains',
 				'window.FormData && window.FormData.prototype.keys' => 'wp-polyfill-formdata',
+				'Element.prototype.matches && Element.prototype.closest' => 'wp-polyfill-element-closest',
 			)
 		)
 	);
@@ -846,6 +847,10 @@ function gutenberg_register_vendor_scripts() {
 		'wp-polyfill-node-contains',
 		'https://unpkg.com/polyfill-library@3.26.0-0/polyfills/Node/prototype/contains/polyfill.js'
 	);
+	gutenberg_register_vendor_script(
+		'wp-polyfill-element-closest',
+		'https://unpkg.com/element-closest@2.0.2/element-closest.js'
+	);
 	gutenberg_register_vendor_script(
 		'wp-polyfill-ecmascript',
 		'https://cdnjs.cloudflare.com/ajax/libs/babel-polyfill/7.0.0/polyfill' . $suffix . '.js'

diff --git a/package-lock.json b/package-lock.json
diff --git a/packages/blocks/package.json b/packages/blocks/package.json
@@ -33,7 +33,6 @@
 		"@wordpress/i18n": "file:../i18n",
 		"@wordpress/is-shallow-equal": "file:../is-shallow-equal",
 		"@wordpress/shortcode": "file:../shortcode",
-		"element-closest": "^2.0.2",
 		"hpq": "^1.2.0",
 		"lodash": "^4.17.10",
 		"rememo": "^3.0.0",

diff --git a/packages/blocks/src/api/raw-handling/index.js b/packages/blocks/src/api/raw-handling/index.js
@@ -2,8 +2,6 @@
  * External dependencies
  */
 import { flatMap, filter, compact } from 'lodash';
-// Also polyfills Element#matches.
-import 'element-closest';
 
 /**
  * Internal dependencies

diff --git a/packages/components/package.json b/packages/components/package.json
@@ -36,7 +36,6 @@
 		"clipboard": "^1.7.1",
 		"diff": "^3.5.0",
 		"dom-scroll-into-view": "^1.2.1",
-		"element-closest": "^2.0.2",
 		"lodash": "^4.17.10",
 		"memize": "^1.0.5",
 		"moment": "^2.22.1",

diff --git a/packages/components/src/autocomplete/index.js b/packages/components/src/autocomplete/index.js
@@ -3,7 +3,6 @@
  */
 import classnames from 'classnames';
 import { escapeRegExp, find, filter, map, debounce } from 'lodash';
-import 'element-closest';
 
 /**
  * WordPress dependencies

diff --git a/packages/dom/package.json b/packages/dom/package.json
@@ -21,7 +21,6 @@
 	"module": "build-module/index.js",
 	"dependencies": {
 		"@babel/runtime": "^7.0.0",
-		"element-closest": "^2.0.2",
 		"lodash": "^4.17.10"
 	},
 	"publishConfig": {

diff --git a/packages/dom/src/focusable.js b/packages/dom/src/focusable.js
@@ -1,8 +1,3 @@
-/**
- * External dependencies
- */
-import 'element-closest';
-
 /**
  * References:
  *

diff --git a/packages/editor/package.json b/packages/editor/package.json
@@ -45,7 +45,6 @@
 		"@wordpress/wordcount": "file:../wordcount",
 		"classnames": "^2.2.5",
 		"dom-scroll-into-view": "^1.2.1",
-		"element-closest": "^2.0.2",
 		"inherits": "^2.0.3",
 		"lodash": "^4.17.10",
 		"memize": "^1.0.5",

diff --git a/packages/editor/src/components/block-list/index.js b/packages/editor/src/components/block-list/index.js
@@ -11,7 +11,6 @@ import {
 	last,
 } from 'lodash';
 import classnames from 'classnames';
-import 'element-closest';
 
 /**
  * WordPress dependencies

diff --git a/packages/editor/src/components/rich-text/index.js b/packages/editor/src/components/rich-text/index.js
@@ -12,7 +12,6 @@ import {
 	merge,
 	noop,
 } from 'lodash';
-import 'element-closest';
 
 /**
  * WordPress dependencies

diff --git a/packages/editor/src/utils/dom.js b/packages/editor/src/utils/dom.js
@@ -1,8 +1,3 @@
-/**
- * External dependencies
- */
-import 'element-closest';
-
 /**
  * Given a block client ID, returns the corresponding DOM node for the block,
  * if exists. As much as possible, this helper should be avoided, and used only

diff --git a/packages/scripts/CHANGELOG.md b/packages/scripts/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 2.3.0 (Unreleased)
+
+### Improvements
+
+- New flag `--ignore` for `check-licenses` script
+
 ## 2.2.1 (2018-09-05)
 
 ### Bug Fix
@@ -8,7 +14,6 @@
 
 - Updated dependencies: `jest`, `npm-package-json-lint` and `read-pkg-up`
 
-
 ## 2.0.0 (2018-07-12)
 
 ### Breaking Change

diff --git a/packages/scripts/README.md b/packages/scripts/README.md
@@ -67,6 +67,27 @@ This is how you execute those scripts using the presented setup:
 * `npm run test:help` - prints all available options to configure unit tests runner.
 * `npm run test:watch` - runs all unit tests in the watch mode.
 
+### `wp-scripts check-licenses`
+
+Validates that all dependencies of a project are compatible with the project's own license.
+
+_Example:_
+
+```json
+{
+	"scripts": {
+		"check-licenses": "wp-scripts check-licenses --prod --gpl2 --ignore=abab",
+	}
+}
+```
+
+_Flags_:
+
+- `--prod` (or `--production`): When present, validates only `dependencies` and not `devDependencies`
+- `--dev` (or `--development`): When present, validates both `dependencies` and `devDependencies`
+- `--gpl2`: Validates against [GPLv2 license compatibility](https://www.gnu.org/licenses/license-list.en.html)
+- `--ignore=a,b,c`: A comma-separated set of package names to ignore for validation. This is intended to be used primarily in cases where a dependency's `license` field is malformed. It's assumed that any `ignored` package argument would be manually vetted for compatibility by the project owner.
+
 ## Inspiration
 
 This is inspired by [react-scripts](https://www.npmjs.com/package/react-scripts) and [kcd-scripts](https://www.npmjs.com/package/kcd-scripts).
-Original file line number
+Diff line change
@@ Expand Up / @@ -12,7 +12,6 @@ import { @@
     	merge,
     	noop,
     } from 'lodash';
-    import 'element-closest';
     /**
      * WordPress dependencies
@@ Expand Down @@