collection.count

Mongo documentation

Returns the count of documents that would match a find() query. The collection.count() method does not perform the find() operation but instead counts and returns the number of results that match a query. The method points to collection.countDocuments() in the mongo driver.

Arguments

1. query (String|ObjectId|Object): The query for the count.

2. [options] (object)

3. [callback] (function)

Returns

A promise

Example

users.count({name: 'foo'})
users.count('id') // a bit useless but consistent with the rest of the API
users.count()

Getting an estimated count

Mongo documentation

If you need to get a fast order of magnitude of the count of all documents in your collection, you can use the estimate option.

⚠️ The query argument will be ignored.

users.count({}, { estimate: true })