diff --git a/packages/lexical-markdown/flow/LexicalMarkdown.js.flow b/packages/lexical-markdown/flow/LexicalMarkdown.js.flow
index 7318dda1171..7f2f34483dc 100644
--- a/packages/lexical-markdown/flow/LexicalMarkdown.js.flow
+++ b/packages/lexical-markdown/flow/LexicalMarkdown.js.flow
@@ -17,6 +17,7 @@ import type {
 
 export type Transformer =
   | ElementTransformer
+  | MultilineElementTransformer
   | TextFormatTransformer
   | TextMatchTransformer;
 
@@ -32,10 +33,34 @@ export type ElementTransformer = {
     children: Array<LexicalNode>,
     match: Array<string>,
     isImport: boolean,
-  ) => void,
+  ) => boolean | void,
   type: 'element',
 };
 
+export type MultilineElementTransformer = {
+  dependencies: Array<Class<LexicalNode>>;
+  export?: (
+    node: LexicalNode,
+    traverseChildren: (node: ElementNode) => string,
+  ) => string | null;
+  regExpStart: RegExp;
+  regExpEnd?:
+    | RegExp
+    | {
+        optional?: true;
+        regExp: RegExp;
+      };
+  replace: (
+    rootNode: ElementNode,
+    children: Array<LexicalNode> | null,
+    startMatch: Array<string>,
+    endMatch: Array<string> | null,
+    linesInBetween: Array<string> | null,
+    isImport: boolean,
+  ) => boolean | void;
+  type: 'multilineElement';
+};
+
 export type TextFormatTransformer = $ReadOnly<{
   format: $ReadOnlyArray<TextFormatType>,
   tag: string,
@@ -90,7 +115,7 @@ declare export var ITALIC_UNDERSCORE: TextFormatTransformer;
 declare export var STRIKETHROUGH: TextFormatTransformer;
 
 declare export var UNORDERED_LIST: ElementTransformer;
-declare export var CODE: ElementTransformer;
+declare export var CODE: MultilineElementTransformer;
 declare export var HEADING: ElementTransformer;
 declare export var ORDERED_LIST: ElementTransformer;
 declare export var QUOTE: ElementTransformer;