Method equals

src/sdam/server_description.ts:177–204

* Determines if another `ServerDescription` is equal to this one per the rules defined in the SDAM specification. * @see https://github.com/mongodb/specifications/blob/master/source/server-discovery-and-monitoring/server-discovery-and-monitoring.md

(other?: ServerDescription | null)

   * @see https://github.com/mongodb/specifications/blob/master/source/server-discovery-and-monitoring/server-discovery-and-monitoring.md
   */
  equals(other?: ServerDescription | null): boolean {
    // Despite using the comparator that would determine a nullish topologyVersion as greater than
    // for equality we should only always perform direct equality comparison
    const topologyVersionsEqual =
      this.topologyVersion === other?.topologyVersion ||
      compareTopologyVersion(this.topologyVersion, other?.topologyVersion) === 0;

    const electionIdsEqual =
      this.electionId != null && other?.electionId != null
        ? compareObjectId(this.electionId, other.electionId) === 0
        : this.electionId === other?.electionId;

    return (
      other != null &&
      other.iscryptd === this.iscryptd &&
      errorStrictEqual(this.error, other.error) &&
      this.type === other.type &&
      this.minWireVersion === other.minWireVersion &&
      arrayStrictEqual(this.hosts, other.hosts) &&
      tagsStrictEqual(this.tags, other.tags) &&
      this.setName === other.setName &&
      this.setVersion === other.setVersion &&
      electionIdsEqual &&
      this.primary === other.primary &&
      this.logicalSessionTimeoutMinutes === other.logicalSessionTimeoutMinutes &&
      topologyVersionsEqual
    );
  }
}

// Parses a `hello` message and determines the server type