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/** * @module @see https://github.com/mongodb/specifications/blob/master/source/read-write-concern/read-write-concern.rst#read-concern */
const enum ReadConcernLevel {  local = "local",  majority = "majority",  linearizable = "linearizable",  available = "available",  snapshot = "snapshot",}
/** * interface for ReadConcern documents used by MongoDB * @see https://docs.mongodb.com/manual/reference/read-concern/ */export interface ReadConcern {  /**   * The level of the read concern.   */  level?: ReadConcernLevel | string;}
/** * interface for WriteConcern documents used by MongoDB * * @see https://docs.mongodb.com/manual/reference/write-concern/ */export interface WriteConcern {  /**   * The number of instances the write operation needs to be propagated to   * before proceeding.   *   * The string based values are:   *   * - majority: The calculated majority of nodes in a cluster has accepted the   *    the write   * - custom write name: Writes have been acknowledged by nodes tagged with the   *    custom write concern.   */  w: number | "majority" | string;  /**   * If true, the server only returns after the operation has been commited to   * disk   */  j: boolean;  /**   * An optional timeout value after which to stop the write operation   */  wtimeout?: number;}