diff --git a/packages/mermaid/src/diagrams/block/blockDB.ts b/packages/mermaid/src/diagrams/block/blockDB.ts
index e63c4fce6..30f7e1574 100644
--- a/packages/mermaid/src/diagrams/block/blockDB.ts
+++ b/packages/mermaid/src/diagrams/block/blockDB.ts
@@ -154,7 +154,6 @@ const populateBlockDatabase = (_blockList: Block[] | Block[][], parent: Block):
 };
 
 let blocks: Block[] = [];
-const links: Link[] = [];
 let rootBlock = { id: 'root', type: 'composite', children: [], columns: -1 } as Block;
 
 const clear = (): void => {
diff --git a/packages/mermaid/src/diagrams/block/blockRenderer.ts b/packages/mermaid/src/diagrams/block/blockRenderer.ts
index cadae89f2..da7e56e54 100644
--- a/packages/mermaid/src/diagrams/block/blockRenderer.ts
+++ b/packages/mermaid/src/diagrams/block/blockRenderer.ts
@@ -42,11 +42,13 @@ export const draw = async function (
   }
   const root =
     securityLevel === 'sandbox'
-      ? d3select(sandboxElement.nodes()[0].contentDocument.body)
-      : d3select('body');
+      ? d3select<HTMLBodyElement, unknown>(sandboxElement.nodes()[0].contentDocument.body)
+      : d3select<HTMLBodyElement, unknown>('body');
 
-  // @ts-ignore TODO root.select is not callable
-  const svg = securityLevel === 'sandbox' ? root.select(`[id="${id}"]`) : d3select(`[id="${id}"]`);
+  const svg =
+    securityLevel === 'sandbox'
+      ? root.select<SVGSVGElement>(`[id="${id}"]`)
+      : d3select<SVGSVGElement, unknown>(`[id="${id}"]`);
 
   // Define the supported markers for the diagram
   const markers = ['point', 'circle', 'cross'];