fix(NODE-3574): reintroduce ObjectID export (#2965)

Author: nbbeeken

src/index.ts

@@ -29,6 +29,13 @@ export {
   Map
 } from './bson';
 
+import { ObjectId } from 'bson';
+/**
+ * @public
+ * @deprecated Please use `ObjectId`
+ */
+export const ObjectID = ObjectId;
+
 export {
   MongoError,
   MongoServerError,

test/types/mongodb.test-d.ts

@@ -1,11 +1,12 @@
-import { expectType, expectDeprecated, expectError } from 'tsd';
+import { expectType, expectDeprecated, expectNotDeprecated, expectError } from 'tsd';
 import { MongoClient } from '../../src/mongo_client';
 import { Collection } from '../../src/collection';
 import { AggregationCursor } from '../../src/cursor/aggregation_cursor';
 import type { FindCursor } from '../../src/cursor/find_cursor';
 import type { Document } from 'bson';
 import { Db } from '../../src';
 import { Topology } from '../../src/sdam/topology';
+import * as MongoDBDriver from '../../src';
 
 // We wish to keep these APIs but continue to ensure they are marked as deprecated.
 expectDeprecated(Collection.prototype.insert);
@@ -15,6 +16,8 @@ expectDeprecated(Collection.prototype.count);
 expectDeprecated(AggregationCursor.prototype.geoNear);
 expectDeprecated(Topology.prototype.unref);
 expectDeprecated(Db.prototype.unref);
+expectDeprecated(MongoDBDriver.ObjectID);
+expectNotDeprecated(MongoDBDriver.ObjectId);
 
 // test mapped cursor types
 const client = new MongoClient('');

test/unit/bson_import.test.js

@@ -87,3 +87,13 @@ describe('When importing BSON', function () {
     testTypes();
   });
 });
+
+describe('MongoDB export', () => {
+  const mongodb = require('../../src');
+  it('should include ObjectId', () =>
+    expect(mongodb).to.have.property('ObjectId').that.is.a('function'));
+  it('should include ObjectID', () =>
+    expect(mongodb).to.have.property('ObjectID').that.is.a('function'));
+  it('should have ObjectID and ObjectId equal each other', () =>
+    expect(mongodb.ObjectId).to.equal(mongodb.ObjectID));
+});