$regex operator called with non regular expression

I’m trying to search string using regex as below:

db.find({ consignee: { $regex: /test/ } }, function (err, docs) { console.log(docs); });

But it is throwing error Error: $regex operator called with non regular expression

[codernoder]

Use { $regex: new RegExp('test') } instead { $regex: /test/ }

[avalla]

I replaced nedb with sqlite, performance are better and migration was not so painful