/**
 * TranscriptProcessor — Parse interview transcripts into structured research data.
 *
 * Heuristic-first: speaker detection via label patterns, theme extraction via
 * TF-IDF on nouns, quote detection via first-person pronouns and sentence length.
 * AI enhances when available but is never required.
 */
export interface TranscriptSegment {
    speaker: string;
    text: string;
    timestamp?: string;
    sentiment?: "positive" | "negative" | "neutral";
}
export interface TranscriptTheme {
    name: string;
    frequency: number;
    quotes: string[];
    sentiment: "positive" | "negative" | "neutral" | "mixed";
}
export interface ProcessedTranscript {
    speakers: string[];
    segments: TranscriptSegment[];
    themes: TranscriptTheme[];
    insights: ProcessedTranscriptInsight[];
    quotes: string[];
    summary: string;
    wordCount: number;
    duration?: string;
}
export interface ProcessedTranscriptInsight {
    id: string;
    finding: string;
    confidence: "high" | "medium" | "low";
    source: string;
    evidence: string[];
    tags: string[];
    createdAt: string;
}
export declare function parseSegments(text: string): TranscriptSegment[];
export declare function extractThemes(segments: TranscriptSegment[], minFrequency?: number): TranscriptTheme[];
export declare function extractQuotes(segments: TranscriptSegment[], minLength?: number): string[];
export declare function generateInsights(themes: TranscriptTheme[], segments: TranscriptSegment[], source: string): ProcessedTranscriptInsight[];
export declare function processTranscript(text: string, source?: string): ProcessedTranscript;