Optional bsonreturn BSON regular expressions as BSONRegExp instances.将BSON正则表达式作为BSONRegExp实例返回。
false
Optional checkthe serializer will check if keys are valid.序列化程序将检查键是否有效。
false
Optional enableEnable utf8 validation when deserializing BSON documents. Defaults to true.在反序列化BSON文档时启用utf8验证。默认为true。
Optional fieldsallow to specify if there what fields we wish to return as unserialized raw buffer.允许指定我们希望返回哪些字段作为未序列化的原始缓冲区。
null
Optional ignoreserialize will not emit undefined fields note that the driver sets this to 序列不会发出未定义的字段。请注意，驱动程序将其设置为falsefalse
true
Optional promotewhen deserializing a Binary will return it as a node.js Buffer instance.当反序列化Binary时，它将作为node.js Buffer实例返回。
false
Optional promotewhen deserializing a Long will fit it into a Number if it's smaller than 53 bits.当反序列化Long时，如果它小于53位，则将其放入Number中。
true
Optional promotewhen deserializing will promote BSON values to their Node.js closest equivalent types.反序列化时将BSON值提升为其Node.js最接近的等效类型。
true
Optional rawEnabling the raw option will return a Node.js Buffer which is allocated using allocUnsafe API.启用raw选项将返回使用allocUnsafe API分配的Node.js缓冲区。
See this section from the Node.js Docs here for more detail about what "unsafe" refers to in this context.请参阅Node.js文档中的这一部分，了解有关“不安全”在本文中所指内容的更多详细信息。
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:如果您需要维护自己的可编辑字节克隆，以延长进程的使用寿命，建议您分配自己的缓冲区并克隆内容：
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仅在此点之后保存和使用“myBuffer”
Please note there is a known limitation where this option cannot be used at the MongoClient level (see NODE-3946).请注意，有一个已知的限制，即此选项不能在MongoClient级别使用（请参阅NODE-3946）。
It does correctly work at 它在Db, Collection, and per operation the same as other BSON options work.Db、Collection和每个操作中都能正常工作，与其他BSON选项的工作方式相同。
Optional serializeserialize the javascript functions序列化javascript函数
false
Optional usewhen deserializing a Long return as a BigInt.当将Long返回反序列化为BigInt时。
false
Generated using TypeDoc
BSON Serialization options.BSON序列化选项。