message: better info comment
diff: @@ -14,7 +14,7 @@ export function heartbeat(shardId: number, interval: number) {
  shard.heartbeat.lastSentAt = Date.now();
  shard.heartbeat.interval = interval;
  - // First heartbeat should be sent bevore
  + // The first heartbeat should not wait for the entire interval to pass
  shard.heartbeat.timeoutId = setTimeout(
  () => sendHeartbeat(shardId),
  Math.floor(shard.heartbeat.interval * Math.random()),
  