import type { HealthCheckDefinition, HealthScope } from "./core/types";
export declare function runtimeInfoCheck(options?: {
    scopes?: readonly HealthScope[];
    critical?: boolean;
}): HealthCheckDefinition<"runtime.info">;
export declare function shutdownCheck(options?: {
    scopes?: readonly HealthScope[];
}): HealthCheckDefinition<"shutdown">;
export declare function startupCheck(options: {
    isStarted: () => boolean | Promise<boolean>;
    scopes?: readonly HealthScope[];
    timeoutMs?: number;
}): HealthCheckDefinition<"startup">;
export declare function timerLagCheck(options?: {
    scopes?: readonly HealthScope[];
    sampleMs?: number;
    thresholds?: {
        degradedMs: number;
        unhealthyMs: number;
    };
    critical?: boolean;
}): HealthCheckDefinition<"timer.lag">;
export declare function memoryCheck(options?: {
    scopes?: readonly HealthScope[];
    availableRatio?: {
        degraded: number;
        unhealthy: number;
    };
    usedRatio?: {
        degraded: number;
        unhealthy: number;
    };
    critical?: boolean | Partial<Record<HealthScope, boolean>>;
}): HealthCheckDefinition<"memory">;
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