diff --git a/packages/mermaid/src/diagrams/mindmap/mindmap-definition.ts b/packages/mermaid/src/diagrams/mindmap/mindmap-definition.ts
index b35214435..c5c7303c3 100644
--- a/packages/mermaid/src/diagrams/mindmap/mindmap-definition.ts
+++ b/packages/mermaid/src/diagrams/mindmap/mindmap-definition.ts
@@ -3,8 +3,9 @@ import mindmapParser from './parser/mindmap.jison';
 import * as mindmapDb from './mindmapDb.js';
 import mindmapRenderer from './mindmapRenderer.js';
 import mindmapStyles from './styles.js';
+import type { DiagramDefinition } from '../../diagram-api/types.js';
 
-export const diagram = {
+export const diagram: DiagramDefinition = {
   db: mindmapDb,
   renderer: mindmapRenderer,
   parser: mindmapParser,
diff --git a/packages/mermaid/src/diagrams/mindmap/mindmapTypes.ts b/packages/mermaid/src/diagrams/mindmap/mindmapTypes.ts
new file mode 100644
index 000000000..caec37d2c
--- /dev/null
+++ b/packages/mermaid/src/diagrams/mindmap/mindmapTypes.ts
@@ -0,0 +1,3 @@
+import type * as mindmapDb from './mindmapDb.js';
+
+export type MindmapDB = typeof mindmapDb;