import { CandidateHealthStoreContext } from "./candidate-health-store-context.js";
import type { FailureClassification, RouterHealthRecord } from "./types.js";
export declare class CandidateHealthStore extends CandidateHealthStoreContext {
    protected claimLocalLease(key: string, current: RouterHealthRecord, now: number): boolean;
    protected claimLease(key: string, current: RouterHealthRecord, now?: number): boolean;
    protected pruneExpiredClaimedProbes(keys: string[], now: number): void;
    protected update<T>(key: string, updater: (current: RouterHealthRecord | undefined) => {
        record?: RouterHealthRecord;
        result: T;
    }, decisionNow?: number): T | "cas-exhausted";
    protected readForDecision(key: string, decisionNow: number | undefined): RouterHealthRecord | undefined;
    protected compareAndSet(): ((key: string, expectedVersion: number | undefined, value: RouterHealthRecord) => boolean) | undefined;
    protected read(key: string, decisionNow?: number): RouterHealthRecord | undefined;
    protected clockNow(): number;
    protected failureKey(index: number, classification: FailureClassification, healthKey?: string, family?: string): string;
}