interface RequestIdMeta {
    entryEndpoint?: string;
    providerId?: string;
    model?: string;
}
interface RequestIdentifiers {
    clientRequestId: string;
    providerRequestId: string;
}
type RequestCounterState = {
    version: 1;
    totalCount: number;
    windowCount: number;
    windowKey: string;
    updatedAt: string;
};
export declare function generateRequestIdentifiers(candidate?: unknown, meta?: RequestIdMeta): RequestIdentifiers;
export declare function enhanceProviderRequestId(currentId: string, meta?: {
    providerId?: string;
    model?: string;
    entryEndpoint?: string;
}): string;
export declare function resolveEffectiveRequestId(requestId?: string): string;
export declare function __unsafeSweepRequestIdCaches(nowMs?: number): void;
export declare function __unsafeRequestIdCacheSize(): {
    components: number;
    aliases: number;
    seqKeys: number;
};
export declare function __unsafeResetRequestIdCounterForTests(next?: Partial<Pick<RequestCounterState, 'totalCount' | 'windowCount' | 'windowKey'>>): void;
export {};