diff --git a/packages/mermaid/src/diagrams/common/commonDb.ts b/packages/mermaid/src/diagrams/common/commonDb.ts
index 49198e683..e4b9c3539 100644
--- a/packages/mermaid/src/diagrams/common/commonDb.ts
+++ b/packages/mermaid/src/diagrams/common/commonDb.ts
@@ -1,6 +1,5 @@
 import { sanitizeText as _sanitizeText } from './common.js';
 import { getConfig } from '../../config.js';
-import type { CommonDb } from './commonTypes.js';
 
 let accTitle = '';
 let diagramTitle = '';
@@ -18,30 +17,16 @@ export const setAccTitle = (txt: string): void => {
   accTitle = sanitizeText(txt).replace(/^\s+/g, '');
 };
 
-export const getAccTitle = (): string => {
-  return accTitle;
-};
+export const getAccTitle = (): string => accTitle;
 
 export const setAccDescription = (txt: string): void => {
   accDescription = sanitizeText(txt).replace(/\n\s+/g, '\n');
 };
 
-export const getAccDescription = (): string => {
-  return accDescription;
-};
+export const getAccDescription = (): string => accDescription;
 
 export const setDiagramTitle = (txt: string): void => {
   diagramTitle = sanitizeText(txt);
 };
 
 export const getDiagramTitle = (): string => diagramTitle;
-
-export const db: CommonDb = {
-  getAccTitle,
-  setAccTitle,
-  getDiagramTitle,
-  setDiagramTitle,
-  getAccDescription,
-  setAccDescription,
-  clear,
-};
diff --git a/packages/mermaid/src/diagrams/common/commonTypes.ts b/packages/mermaid/src/diagrams/common/commonTypes.ts
index b856bc362..84c26db6e 100644
--- a/packages/mermaid/src/diagrams/common/commonTypes.ts
+++ b/packages/mermaid/src/diagrams/common/commonTypes.ts
@@ -1,5 +1,3 @@
-import type { DiagramDB } from '../../diagram-api/types.js';
-
 export interface RectData {
   x: number;
   y: number;
@@ -58,13 +56,3 @@ export type D3ImageElement = d3.Selection<SVGImageElement, unknown, Element | nu
 export type D3TextElement = d3.Selection<SVGTextElement, unknown, Element | null, unknown>;
 
 export type D3TSpanElement = d3.Selection<SVGTSpanElement, unknown, Element | null, unknown>;
-
-export interface CommonDb extends DiagramDB {
-  clear: () => void;
-  setDiagramTitle: (title: string) => void;
-  getDiagramTitle: () => string;
-  setAccTitle: (title: string) => void;
-  getAccTitle: () => string;
-  setAccDescription: (describetion: string) => void;
-  getAccDescription: () => string;
-}