Interface DbOptions

Hierarchy

Properties

authSource?: string

If the database authentication is dependent on another databaseName.

bsonRegExp?: boolean

return BSON regular expressions as BSONRegExp instances.

Default Value

false

checkKeys?: boolean

the serializer will check if keys are valid.

Default Value

false

enableUtf8Validation?: boolean

Enable utf8 validation when deserializing BSON documents. Defaults to true.

fieldsAsRaw?: Document

allow to specify if there what fields we wish to return as unserialized raw buffer.

Default Value

null

forceServerObjectId?: boolean

Force server to assign _id values instead of driver.

ignoreUndefined?: boolean

serialize will not emit undefined fields note that the driver sets this to false

Default Value

true

pkFactory?: PkFactory

A primary key factory object for generation of custom _id keys.

promoteBuffers?: boolean

when deserializing a Binary will return it as a node.js Buffer instance.

Default Value

false

promoteLongs?: boolean

when deserializing a Long will fit it into a Number if it's smaller than 53 bits.

Default Value

true

promoteValues?: boolean

when deserializing will promote BSON values to their Node.js closest equivalent types.

Default Value

true

raw?: boolean

Enabling the raw option will return a Node.js Buffer which is allocated using allocUnsafe API. See this section from the Node.js Docs here for more detail about what "unsafe" refers to in this context. If you need to maintain your own editable clone of the bytes returned for an extended life time of the process, it is recommended you allocate your own buffer and clone the contents:

Example

const raw = await collection.findOne({}, { raw: true });
const myBuffer = Buffer.alloc(raw.byteLength);
myBuffer.set(raw, 0);
// Only save and use `myBuffer` beyond this point

Remarks

Please note there is a known limitation where this option cannot be used at the MongoClient level (see NODE-3946). It does correctly work at Db, Collection, and per operation the same as other BSON options work.

readConcern?: ReadConcern

Specify a read concern for the collection. (only MongoDB 3.2 or higher supported)

readPreference?: ReadPreferenceLike

The preferred read preference (ReadPreference.PRIMARY, ReadPreference.PRIMARY_PREFERRED, ReadPreference.SECONDARY, ReadPreference.SECONDARY_PREFERRED, ReadPreference.NEAREST).

retryWrites?: boolean

Should retry failed writes

serializeFunctions?: boolean

serialize the javascript functions

Default Value

false

useBigInt64?: boolean

when deserializing a Long return as a BigInt.

Default Value

false

Write Concern as an object

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