📎 Fix some missing changes

frontend/text-editor/src/editor/commands/insertParagraph.js

@@ -0,0 +1,23 @@
+/**
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright (c) KALEIDOS INC
+ */
+
+/**
+ * Insert a paragraph
+ *
+ * @see https://w3c.github.io/input-events/#interface-InputEvent
+ * @param {InputEvent} event
+ * @param {TextEditor} editor
+ * @param {SelectionController} selectionController
+ */
+export function insertParagraph(event, editor, selectionController) {
+  event.preventDefault();
+  if (selectionController.isCollapsed) {
+    return selectionController.insertParagraph();
+  }
+  return selectionController.replaceWithParagraph();
+}