chore: initialise cursor variables

Author: himanshusinghs

src/tools/mongodb/read/aggregate.ts

@@ -35,7 +35,7 @@ export class AggregateTool extends MongoDBToolBase {
         { database, collection, pipeline, responseBytesLimit }: ToolArgs<typeof this.argsShape>,
         { signal }: ToolExecutionContext
     ): Promise<CallToolResult> {
-        let aggregationCursor: AggregationCursor | undefined;
+        let aggregationCursor: AggregationCursor | undefined = undefined;
         try {
             const provider = await this.ensureConnected();
 

src/tools/mongodb/read/find.ts

@@ -48,7 +48,7 @@ export class FindTool extends MongoDBToolBase {
         { database, collection, filter, projection, limit, sort, responseBytesLimit }: ToolArgs<typeof this.argsShape>,
         { signal }: ToolExecutionContext
     ): Promise<CallToolResult> {
-        let findCursor: FindCursor<unknown> | undefined;
+        let findCursor: FindCursor<unknown> | undefined = undefined;
         try {
             const provider = await this.ensureConnected();