diff --git a/docs/config/setup/interfaces/mermaid.LayoutData.md b/docs/config/setup/interfaces/mermaid.LayoutData.md
index 6f128f4a71..f45d5f0e70 100644
--- a/docs/config/setup/interfaces/mermaid.LayoutData.md
+++ b/docs/config/setup/interfaces/mermaid.LayoutData.md
@@ -16,11 +16,11 @@
 
 ### config
 
-• **config**: `MermaidConfig`
+• **config**: [`MermaidConfig`](mermaid.MermaidConfig.md)
 
 #### Defined in
 
-[packages/mermaid/src/rendering-util/types.d.ts:118](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.d.ts#L118)
+[packages/mermaid/src/rendering-util/types.ts:117](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.ts#L117)
 
 ---
 
@@ -30,7 +30,7 @@
 
 #### Defined in
 
-[packages/mermaid/src/rendering-util/types.d.ts:117](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.d.ts#L117)
+[packages/mermaid/src/rendering-util/types.ts:116](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.ts#L116)
 
 ---
 
@@ -40,4 +40,4 @@
 
 #### Defined in
 
-[packages/mermaid/src/rendering-util/types.d.ts:116](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.d.ts#L116)
+[packages/mermaid/src/rendering-util/types.ts:115](https://github.com/mermaid-js/mermaid/blob/master/packages/mermaid/src/rendering-util/types.ts#L115)
diff --git a/eslint.config.js b/eslint.config.js
index 8b4807bc57..3278c7eb42 100644
--- a/eslint.config.js
+++ b/eslint.config.js
@@ -23,6 +23,7 @@ export default tseslint.config(
       '**/generated/',
       '**/coverage/',
       'packages/mermaid/src/config.type.ts',
+      'packages/mermaid/src/docs/.vitepress/components.d.ts',
     ],
   },
   {
diff --git a/packages/mermaid-layout-elk/src/render.ts b/packages/mermaid-layout-elk/src/render.ts
index 7ac43bb7f1..e647422ecc 100644
--- a/packages/mermaid-layout-elk/src/render.ts
+++ b/packages/mermaid-layout-elk/src/render.ts
@@ -224,7 +224,7 @@ export const render = async (
    * Add edges to graph based on parsed graph definition
    */
   const addEdges = async function (
-    dataForLayout: { edges: any; direction: string },
+    dataForLayout: { edges: any; direction?: string },
     graph: {
       id?: string;
       layoutOptions?: {
@@ -749,12 +749,12 @@ export const render = async (
     layoutOptions: {
       'elk.hierarchyHandling': 'INCLUDE_CHILDREN',
       'elk.algorithm': algorithm,
-      'nodePlacement.strategy': data4Layout.config.elk.nodePlacementStrategy,
-      'elk.layered.mergeEdges': data4Layout.config.elk.mergeEdges,
+      'nodePlacement.strategy': data4Layout.config.elk?.nodePlacementStrategy,
+      'elk.layered.mergeEdges': data4Layout.config.elk?.mergeEdges,
       'elk.direction': 'DOWN',
       'spacing.baseValue': 35,
       'elk.layered.unnecessaryBendpoints': true,
-      'elk.layered.cycleBreaking.strategy': data4Layout.config.elk.cycleBreakingStrategy,
+      'elk.layered.cycleBreaking.strategy': data4Layout.config.elk?.cycleBreakingStrategy,
       // 'spacing.nodeNode': 20,
       // 'spacing.nodeNodeBetweenLayers': 25,
       // 'spacing.edgeNode': 20,
@@ -837,8 +837,8 @@ export const render = async (
           ...node.layoutOptions,
           'elk.algorithm': algorithm,
           'elk.direction': dir2ElkDirection(node.dir),
-          'nodePlacement.strategy': data4Layout.config['elk.nodePlacement.strategy'],
-          'elk.layered.mergeEdges': data4Layout.config['elk.mergeEdges'],
+          'nodePlacement.strategy': data4Layout.config.elk?.nodePlacementStrategy,
+          'elk.layered.mergeEdges': data4Layout.config.elk?.mergeEdges,
           'elk.hierarchyHandling': 'SEPARATE_CHILDREN',
         };
       }
diff --git a/packages/mermaid/src/rendering-util/types.d.ts b/packages/mermaid/src/rendering-util/types.ts
similarity index 95%
rename from packages/mermaid/src/rendering-util/types.d.ts
rename to packages/mermaid/src/rendering-util/types.ts
index 67f8de40e8..8280f96761 100644
--- a/packages/mermaid/src/rendering-util/types.d.ts
+++ b/packages/mermaid/src/rendering-util/types.ts
@@ -1,5 +1,5 @@
 export type MarkdownWordType = 'normal' | 'strong' | 'em';
-import type { MermaidConfig } from '../../dist/config.type';
+import type { MermaidConfig } from '../config.type.js';
 export interface MarkdownWord {
   content: string;
   type: MarkdownWordType;
@@ -9,7 +9,7 @@ export type MarkdownLine = MarkdownWord[];
 export type CheckFitFunction = (text: MarkdownLine) => boolean;
 
 // Common properties for any node in the system
-interface Node {
+export interface Node {
   id: string;
   label?: string;
   description?: string[];
@@ -38,7 +38,6 @@ interface Node {
   tooltip?: string;
   padding?: number; //REMOVE?, use from LayoutData.config - Keep, this could be shape specific
   shape?: string;
-  tooltip?: string;
   isGroup: boolean;
   width?: number;
   height?: number;
@@ -68,7 +67,7 @@ interface Node {
 }
 
 // Common properties for any edge in the system
-interface Edge {
+export interface Edge {
   id: string;
   label?: string;
   classes?: string;
@@ -98,7 +97,7 @@ interface Edge {
   look?: string;
 }
 
-interface RectOptions {
+export interface RectOptions {
   rx: number;
   ry: number;
   labelPaddingX: number;
@@ -107,7 +106,7 @@ interface RectOptions {
 }
 
 // Extending the Node interface for specific types if needed
-interface ClassDiagramNode extends Node {
+export interface ClassDiagramNode extends Node {
   memberData: any; // Specific property for class diagram nodes
 }