added suggested connection dependency fix

Author: aditi-khare-mongoDB

src/mongo_client.ts

@@ -21,7 +21,7 @@ import { MONGO_CLIENT_EVENTS } from './constants';
 import { type AbstractCursor } from './cursor/abstract_cursor';
 import { Db, type DbOptions } from './db';
 import type { Encrypter } from './encrypter';
-import { MongoInvalidArgumentError } from './error';
+import { MongoInvalidArgumentError, MongoRuntimeError } from './error';
 import { MongoClientAuthProviders } from './mongo_client_auth_providers';
 import {
   type LogComponentSeveritiesClientOptions,
@@ -538,6 +538,10 @@ export class MongoClient extends TypedEventEmitter<MongoClientEvents> implements
    * @see docs.mongodb.org/manual/reference/connection-string/
    */
   async connect(): Promise<this> {
+    if (this.closeLock) {
+      throw new MongoRuntimeError('Client cannot be connected while close() is in progress.');
+    }
+
     if (this.connectionLock) {
       return await this.connectionLock;
     }

test/integration/node-specific/mongo_client.test.ts

@@ -762,6 +762,7 @@ describe('class MongoClient', function () {
 
     context('concurrent calls', () => {
       let topologyClosedSpy;
+
       beforeEach(async function () {
         await client.connect();
         const coll = client.db('db').collection('concurrentCalls');
@@ -820,6 +821,8 @@ describe('class MongoClient', function () {
         await client.close();
 
         expect(client.topology).to.be.undefined;
+      });
+    });
 
     describe('active cursors', function () {
       let collection: Collection<{ _id: number }>;