export interface EntsoeParams {
    documentType: string;
    processType?: string;
    in_Domain?: string;
    out_Domain?: string;
    periodStart: string;
    periodEnd: string;
    [key: string]: string | undefined;
}
/** Format a Date as ENTSO-E expects: YYYYMMDDHHmm (UTC) */
export declare function formatEntsoeDate(date: Date): string;
/** Build start/end timestamps for a single day query */
export declare function dayRange(dateStr?: string): {
    periodStart: string;
    periodEnd: string;
};
/**
 * Query the ENTSO-E API.
 * Returns parsed XML as JS object.
 * Caches by URL with the given TTL.
 */
export declare function queryEntsoe(params: EntsoeParams, ttlMs?: number): Promise<Record<string, unknown>>;