class MemoryHealthIndicator extends HealthIndicator {
  checkHeap(key: string, heapUsedThreshold: number): Promise<HealthIndicatorResult>
  checkRSS(key: string, rssThreshold: number): Promise<HealthIndicatorResult>

  // inherited from terminus/lib/HealthIndicator
  protected getStatus(key: string, isHealthy: boolean, data?: { [key: string]: any; }): HealthIndicatorResult
}

checkHeap(key: string, heapUsedThreshold: number): Promise<HealthIndicatorResult>

    
// The process should not use more than 150MB memory
memoryHealthIndicator.checkHeap('memory_heap', 150 * 1024 * 1024);

checkRSS(key: string, rssThreshold: number): Promise<HealthIndicatorResult>

    
// The process should not have more than 150MB allocated
memoryHealthIndicator.checkRSS('memory_rss', 150 * 1024 * 1024);