const mongodb = require('mongodb');

const unorderedBulkWrite = async () => {
	const client = new mongodb.MongoClient('mongodb://localhost:26000/?replicaSet=replset');
	await client.connect();

	const collection = client.db('my_db').collection('test');
	// create some data
	await collection.bulkWrite([
		{ insertOne: { _id: 1, a: 2 } },
		{ insertOne: { _id: 2, a: 3 } },
	]);
	// unordered bulkWrite
	const reply = await collection.bulkWrite([
		{ updateOne: { filter: { _id: 1 }, update: { $set: { a: 0 } } } },
		{ insertOne: { _a: 0 } },
		{ updateOne: { filter: { _id: 2 }, update: { $set: { a: 0 } } } },
		{ insertOne: { a: 0 } },
	], { ordered: false });
	console.log(reply.result.insertedIds);
	return reply.result.insertedIds;

}

unorderedBulkWrite();

[{
	_id: '63b2efb47fb05e8aa2a06173',
	index: 0
}, {
	_id:'63b2efb47fb05e8aa2a06174', 
	index:1
}]