/**
 * Parameter normalization for Exa search.
 *
 * Adapted from najibninaba/pi-exa-search's params.ts to:
 *  - reuse our existing `EffectiveExaParams` type
 *  - validate Exa-specific search types + recency filters
 *  - normalize domain filters (with `-` exclude prefix)
 *  - normalize date bounds + reject recencyFilter+date mixing
 *
 * Pure functions, no I/O. Trivially unit-testable.
 */
import { type EffectiveExaParams, type ExaRecencyFilter, type ExaSearchType } from "../types.js";
export declare const DEFAULT_NUM_RESULTS = 5;
export declare const MAX_NUM_RESULTS = 10;
export declare const DEFAULT_HIGHLIGHTS_MAX_CHARACTERS = 800;
export declare const MIN_HIGHLIGHTS_MAX_CHARACTERS = 200;
export declare const MAX_HIGHLIGHTS_MAX_CHARACTERS = 4000;
export type RawExaParams = {
    query?: string;
    queries?: string[];
    numResults?: number;
    searchType?: ExaSearchType;
    recencyFilter?: ExaRecencyFilter;
    startPublishedDate?: string;
    endPublishedDate?: string;
    domainFilter?: string[];
    includeDomains?: string[];
    excludeDomains?: string[];
    highlightsMaxCharacters?: number;
    includeContent?: boolean;
};
export declare function normalizeExaParams(raw: RawExaParams, options?: {
    now?: () => Date;
}): EffectiveExaParams;
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