Insert new line character for code block

Author: sugarshin

src/index.js

@@ -13,6 +13,7 @@ import insertEmptyBlock from './modifiers/insertEmptyBlock';
 import handleLink from './modifiers/handleLink';
 import handleImage from './modifiers/handleImage';
 import leaveList from './modifiers/leaveList';
+import insertText from './modifiers/insertText';
 import createLinkDecorator from './decorators/link';
 import createImageDecorator from './decorators/image';
 
@@ -51,6 +52,9 @@ const createMarkdownShortcutsPlugin = (config = {}) => {
         (ev.ctrlKey || ev.shiftKey || ev.metaKey || ev.altKey || /^header-/.test(type))) {
         newEditorState = insertEmptyBlock(editorState);
       }
+      if (newEditorState === editorState && type === 'code-block') {
+        newEditorState = insertText(editorState, '\n');
+      }
       if (newEditorState === editorState) {
         newEditorState = handleNewCodeBlock(editorState);
       }

src/modifiers/insertText.js

@@ -0,0 +1,19 @@
+import { EditorState, Modifier } from 'draft-js';
+
+const insertText = (editorState, text) => {
+  const selection = editorState.getSelection();
+  const content = editorState.getCurrentContent();
+  const newContentState = Modifier.insertText(
+    content,
+    selection,
+    text,
+    editorState.getCurrentInlineStyle()
+  );
+  return EditorState.push(
+    editorState,
+    newContentState,
+    'insert-fragment'
+  );
+};
+
+export default insertText;