test(NODE-7184): fix imports & convert into .ts

Author: tadjik1

test/integration/read-write-concern/read_write_concern.spec.test.ts

@@ -1,4 +1,4 @@
-import * as path from 'path';
+import * as path from 'node:path';
 
 import { loadSpecTests } from '../../spec';
 import { runUnifiedSuite } from '../../tools/unified-spec-runner/runner';

test/integration/read-write-concern/readconcern.test.js renamed to test/integration/read-write-concern/readconcern.test.ts

@@ -1,9 +1,10 @@
-'use strict';
-const { setupDatabase, filterForCommands } = require('../shared');
-const expect = require('chai').expect;
+import { expect } from 'chai';
 
-describe('ReadConcern', function () {
-  let client;
+import { type MongoClient } from '../../../src';
+import { filterForCommands, setupDatabase } from '../shared';
+
+describe.only('ReadConcern', function () {
+  let client: MongoClient;
 
   before(function () {
     return setupDatabase(this.configuration);

test/integration/read-write-concern/write_concern.test.ts

@@ -7,10 +7,10 @@ import {
   type CommandStartedEvent,
   type CommandSucceededEvent,
   type Db,
-  LEGACY_HELLO_COMMAND,
-  MongoClient,
-  OpMsgRequest
-} from '../../mongodb';
+  MongoClient
+} from '../../../src';
+import { OpMsgRequest } from '../../../src/cmap/commands';
+import { LEGACY_HELLO_COMMAND } from '../../../src/constants';
 import * as mock from '../../tools/mongodb-mock/index';
 import { filterForCommands } from '../shared';
 
@@ -144,7 +144,7 @@ describe('Write Concern', function () {
           async test() {
             const changeStream = col.watch(undefined, { batchSize: 2 });
             const changes = on(changeStream, 'change');
-            await once(changeStream.cursor, 'init');
+            await once(changeStream['cursor'], 'init');
 
             await col.insertMany(
               [