diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-includes/js/dist/dom-ready.js
--- a/wp/wp-includes/js/dist/dom-ready.js	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-includes/js/dist/dom-ready.js	Tue Dec 15 13:49:49 2020 +0100
@@ -82,20 +82,35 @@
 /******/
 /******/
 /******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(__webpack_require__.s = 340);
+/******/ 	return __webpack_require__(__webpack_require__.s = 419);
 /******/ })
 /************************************************************************/
 /******/ ({
 
-/***/ 340:
+/***/ 419:
 /***/ (function(module, __webpack_exports__, __webpack_require__) {
 
 "use strict";
 __webpack_require__.r(__webpack_exports__);
+/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return domReady; });
+/**
+ * @typedef {() => void} Callback
+ *
+ * TODO: Remove this typedef and inline `() => void` type.
+ *
+ * This typedef is used so that a descriptive type is provided in our
+ * automatically generated documentation.
+ *
+ * An in-line type `() => void` would be preferable, but the generated
+ * documentation is `null` in that case.
+ *
+ * @see https://github.com/WordPress/gutenberg/issues/18045
+ */
+
 /**
  * Specify a function to execute when the DOM is fully loaded.
  *
- * @param {Function} callback A function to execute after the DOM is ready.
+ * @param {Callback} callback A function to execute after the DOM is ready.
  *
  * @example
  * ```js
@@ -108,18 +123,16 @@
  *
  * @return {void}
  */
-var domReady = function domReady(callback) {
+function domReady(callback) {
   if (document.readyState === 'complete' || // DOMContentLoaded + Images/Styles/etc loaded, so we call directly.
   document.readyState === 'interactive' // DOMContentLoaded fires at this point, so we call directly.
   ) {
-      return callback();
+      return void callback();
     } // DOMContentLoaded has not fired yet, delay callback until then.
 
 
   document.addEventListener('DOMContentLoaded', callback);
-};
-
-/* harmony default export */ __webpack_exports__["default"] = (domReady);
+}
 
 
 /***/ })