/**
 * Temporal expression resolver for search queries.
 *
 * Parses relative time expressions ("N days ago", "last Saturday", etc.)
 * into absolute date ranges that can be used to filter search candidates.
 *
 * Pure deterministic logic — no LLM calls.
 */
export interface TemporalRange {
    /** Start of range (inclusive) */
    start: Date;
    /** End of range (inclusive) */
    end: Date;
    /** Confidence level for the resolution */
    confidence: 'high' | 'medium' | 'low';
    /** The matched temporal expression */
    matched: string;
}
/**
 * Resolve a relative temporal expression in a query to an absolute date range.
 * Returns null if no temporal expression is found.
 *
 * @param query The search query that may contain temporal expressions
 * @param referenceDate The anchor date (typically the query/session date)
 */
export declare function resolveTemporalRange(query: string, referenceDate: Date | string | number): TemporalRange | null;
/**
 * Strip temporal expressions from a query string so downstream BM25/vector
 * search focuses on the content keywords rather than date noise.
 *
 * Example: "jewelry from my aunt last Saturday" → "jewelry from my aunt"
 */
export declare function stripTemporalExpressions(query: string): string;
/**
 * Check whether a date falls within a temporal range.
 */
export declare function inTemporalRange(date: Date | string | number, range: TemporalRange): boolean;
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