import type { IdempotencyKeyOptions } from "./catalog.js";
export declare class IdempotencyKeyCatalogAPI {
    #private;
    private static _instance?;
    private constructor();
    static getInstance(): IdempotencyKeyCatalogAPI;
    registerKeyOptions(hash: string, options: IdempotencyKeyOptions): void;
    getKeyOptions(hash: string): IdempotencyKeyOptions | undefined;
    clear(): void;
}