import { DocumentChunk } from '@grubtech/integration-core';
export interface SearchOptions {
    partialMatch?: boolean;
    maxResults?: number;
}
export interface ScoredChunk extends DocumentChunk {
    relevanceScore: number;
    matchedKeywords: string[];
}
export declare class KeywordSearch {
    private options;
    private defaultOptions;
    constructor(options?: SearchOptions);
    /**
     * Search document chunks using keyword matching algorithm
     */
    search(query: string, chunks: DocumentChunk[], limit?: number): ScoredChunk[];
    /**
     * Tokenize query into lowercase keywords
     */
    private tokenize;
    /**
     * Score a single document chunk against keywords
     */
    private scoreChunk;
    /**
     * Check if text matches keyword (exact or partial)
     */
    private matchesKeyword;
    /**
     * Count keyword occurrences in text
     */
    private countOccurrences;
    /**
     * Escape special regex characters
     */
    private escapeRegex;
}
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