+ private async startOnEmptyQueue (): Promise<void> {
+ if (this.tasksQueue.size > 0) {
+ this.onEmptyQueueCount = 0
+ return
+ }
+ (this.onEmptyQueue as (workerId: number) => void)(this.info.id as number)
+ ++this.onEmptyQueueCount
+ await sleep(exponentialDelay(this.onEmptyQueueCount))
+ await this.startOnEmptyQueue()
+ }
+