/**
 * @fileoverview GDELT timeline date normalization and interval-based resolution inference.
 * @module services/gdelt/date-resolution
 */
/** Normalize GDELT compact dates to ISO 8601 while preserving date-only precision. */
export declare function normalizeGdeltDate(value: string): string;
export type DocDateResolution = '15min' | 'hour' | 'day';
export type TvDateResolution = 'hour' | 'day' | 'week' | 'month' | 'year';
export declare function inferDateResolution(dates: string[], api: 'tv'): TvDateResolution | undefined;
export declare function inferDateResolution(dates: string[], api?: 'doc'): DocDateResolution | undefined;
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