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Nodeのmongodbでfindにprojection指定

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バージョン
mongodb@3.7.4

.js
// findOneの場合
db.collection('collection').findOne({ key: 'value' }, { projection: { _id: 0 } });

// findの場合
db.collection('collection').find({ key: 'value' }, { projection: { _id: 0 } }).toArray();
db.collection('collection').find({ key: 'value' }).project({ _id: 0 }).toArray();

この書き方で「_id」だけ取得対象外にできます。

ちなみに

.js
db.collection('collection').findOne({ key: 'value' }).project({ _id: 0 });

これだと「project is not a function」と言われてエラーになります。

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