import type { OnModuleInit } from '@nestjs/common';
import { ModuleRef } from '@nestjs/core';
import type { Constructor } from '@rsdk/common';
import { ILogger } from '@rsdk/logging';
import { RsdkMetadataProvider } from '@rsdk/metadata';
import type { CheckSummary, HealthIndicator, IndicatorMetadata } from './types';
export declare class HealthChecksService implements OnModuleInit {
    private readonly logger;
    private readonly moduleRef;
    private readonly rsdkMetadataProvider;
    private readonly indicators;
    private readonly indicatorNames;
    constructor(logger: ILogger, moduleRef: ModuleRef, rsdkMetadataProvider: RsdkMetadataProvider);
    check(filter?: '*' | string): Promise<CheckSummary>;
    iterateByIndicators(): [Constructor<HealthIndicator>, IndicatorMetadata][];
    onModuleInit(): Promise<void>;
    private filterIndicators;
    private resolve;
}