diff --git a/packages/mermaid/src/diagrams/flowchart/flowDb.ts b/packages/mermaid/src/diagrams/flowchart/flowDb.ts
index 97bf350582..814a1d4313 100644
--- a/packages/mermaid/src/diagrams/flowchart/flowDb.ts
+++ b/packages/mermaid/src/diagrams/flowchart/flowDb.ts
@@ -12,60 +12,10 @@ import {
   setDiagramTitle,
   getDiagramTitle,
 } from '../common/commonDb.js';
+import type { FlowVertex, FlowClass, FlowSubGraph, FlowText, FlowEdge, FlowLink } from './types.js';
 
 const MAX_EDGE_COUNT = 280;
 
-interface FlowVertex {
-  id: string;
-  labelType: 'text';
-  dir?: string;
-  props?: any;
-  type?: string;
-  text?: string;
-  link?: string;
-  linkTarget?: string;
-  haveCallback?: boolean;
-  domId: string;
-  styles: any[];
-  classes: any[];
-}
-
-interface FlowText {
-  text: string;
-  type: 'text';
-}
-
-interface FlowEdge {
-  start: string;
-  end: string;
-  type?: string;
-  stroke?: string;
-  length?: number;
-  text: string;
-  labelType: 'text';
-}
-
-interface FlowClass {
-  id: string;
-  styles: string[];
-  textStyles: string[];
-}
-
-interface FlowSubGraph {
-  id: string;
-  nodes: string[];
-  title: string;
-  classes: string[];
-  dir?: string;
-  labelType: string;
-}
-
-interface FlowLink {
-  type: string;
-  stroke: string;
-  length?: number;
-}
-
 const MERMAID_DOM_ID_PREFIX = 'flowchart-';
 let vertexCounter = 0;
 let config = getConfig();
diff --git a/packages/mermaid/src/diagrams/flowchart/types.ts b/packages/mermaid/src/diagrams/flowchart/types.ts
new file mode 100644
index 0000000000..4261f51b93
--- /dev/null
+++ b/packages/mermaid/src/diagrams/flowchart/types.ts
@@ -0,0 +1,50 @@
+export interface FlowVertex {
+  id: string;
+  labelType: 'text';
+  dir?: string;
+  props?: any;
+  type?: string;
+  text?: string;
+  link?: string;
+  linkTarget?: string;
+  haveCallback?: boolean;
+  domId: string;
+  styles: any[];
+  classes: any[];
+}
+
+export interface FlowText {
+  text: string;
+  type: 'text';
+}
+
+export interface FlowEdge {
+  start: string;
+  end: string;
+  type?: string;
+  stroke?: string;
+  length?: number;
+  text: string;
+  labelType: 'text';
+}
+
+export interface FlowClass {
+  id: string;
+  styles: string[];
+  textStyles: string[];
+}
+
+export interface FlowSubGraph {
+  id: string;
+  nodes: string[];
+  title: string;
+  classes: string[];
+  dir?: string;
+  labelType: string;
+}
+
+export interface FlowLink {
+  type: string;
+  stroke: string;
+  length?: number;
+}