接口 ChangeStreamDocumentKey<TSchema>

interface ChangeStreamDocumentKey<TSchema extends Document = Document> {
documentKey: { _id: InferIdType<TSchema>; [shardKey: string]: any };
}

属性

documentKey: { _id: InferIdType<TSchema>; [shardKey: string]: any }

For unsharded collections this contains a single field _id. For sharded collections, this will contain all the components of the shard key