/**
 * Snippet Generator
 * Generates context-aware snippets with query term highlighting
 */
/**
 * Configuration for snippet generation
 */
export interface SnippetConfig {
    /** Target snippet length in characters */
    targetLength: number;
    /** Context before match (characters) */
    contextBefore: number;
    /** Context after match (characters) */
    contextAfter: number;
    /** Whether to highlight query terms */
    highlight: boolean;
    /** Highlight format (markdown bold by default) */
    highlightStart: string;
    highlightEnd: string;
    /** Ellipsis character for truncation */
    ellipsis: string;
    /** Whether to prefer sentence boundaries */
    preferSentenceBoundaries: boolean;
}
export declare const DEFAULT_SNIPPET_CONFIG: SnippetConfig;
/**
 * Information about a snippet match
 */
export interface SnippetMatch {
    start: number;
    end: number;
    term: string;
}
/**
 * Snippet Generator class
 */
export declare class SnippetGenerator {
    private config;
    constructor(config?: Partial<SnippetConfig>);
    /**
     * Generate a snippet from content highlighting query terms
     */
    generate(content: string, query: string): string;
    /**
     * Tokenize query into searchable terms
     */
    private tokenizeQuery;
    /**
     * Find all matches of query terms in content
     */
    private findMatches;
    /**
     * Find the best region using sliding window density
     */
    private findBestRegion;
    /**
     * Extract a region from content with proper boundaries
     */
    private extractRegion;
    /**
     * Highlight query terms in snippet
     */
    private highlightTerms;
    /**
     * Escape special regex characters
     */
    private escapeRegex;
    /**
     * Truncate content to target length at word boundary
     */
    private truncateToLength;
}
/**
 * Get or create a snippet generator
 */
export declare function getSnippetGenerator(config?: Partial<SnippetConfig>): SnippetGenerator;
/**
 * Generate a snippet using default configuration
 */
export declare function generateSnippet(content: string, query: string): string;
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