export type DelimiterCandidate = ',' | '\t' | ';' | '|' | ' ';
export interface DelimiterDetectionResult {
    delimiter: string;
    confidence: 'high' | 'medium' | 'low';
}
/**
 * Detect the most likely delimiter for CSV/TSV-like data.
 * Scores candidates by consistency across the first few non-empty lines.
 */
export declare function detectDelimiter(text: string): DelimiterDetectionResult;
/**
 * Parse a small preview of text with a given delimiter.
 */
export declare function parsePreview(text: string, delimiter: string, maxRows?: number): string[][];
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