import type { RouterHealthRecord, RouterHealthStore } from "./types.js";
export type HealthTransition = "cas-exhausted" | "cooling" | "deduplicated" | "ignored-stale" | "recovered";
export interface HealthProbeLease {
    key: string;
    probingUntil: number;
    source?: "local";
}
export declare class RouterHealthUnavailableError extends Error {
    readonly code = "health_unavailable";
    readonly logicalId: string;
    constructor(logicalId: string);
}
export declare function cloneHealthRecord(value: RouterHealthRecord): RouterHealthRecord;
export declare function resolveCasResult<T>(result: unknown, success: T): T | "cas-exhausted" | undefined;
export declare class MemoryRouterHealthStore implements RouterHealthStore {
    private readonly records;
    private readonly maxRecords;
    constructor(maxRecords?: number);
    delete(key: string): void;
    compareAndSet(key: string, expectedVersion: number | undefined, value: RouterHealthRecord): boolean;
    entries(): IterableIterator<[string, RouterHealthRecord]>;
    get(key: string): RouterHealthRecord | undefined;
    set(key: string, value: RouterHealthRecord): void;
    private setRecord;
}