Constructs a ReadConcern from the read concern level.
StaticAVAILABLEStaticLINEARIZABLEStaticMAJORITYStaticSNAPSHOTStaticfromConstruct a ReadConcern given an options object.
Optionaloptions: { The options object from which to extract the write concern.
Optionallevel?: ReadConcernLevelOptionalread
The MongoDB ReadConcern, which allows for control of the consistency and isolation properties of the data read from replica sets and replica set shards.MongoDB ReadConcern,允许控制从副本集和副本集分片读取的数据的一致性和隔离属性。See
/v8.3/reference/read-concern/index.html