interface CsvOptions {
    /** Delimiter. If omitted, we'll auto-detect among , ; \t | */
    delimiter?: string;
    /** Use first row as headers (default true). You can also pass explicit headers. */
    headers?: boolean | string[];
    /** Keep header case (default: false = trim + toLowerCase) */
    preserveHeaderCase?: boolean;
    /** Treat lines starting with this as comments (e.g. '#') */
    comment?: string;
    /** Skip empty lines (default true) */
    skipEmptyLines?: boolean;
    /** Fill missing cells with this value (default null) */
    defval?: unknown;
    /** Try to coerce numbers/booleans/null (default false) */
    inferTypes?: boolean;
    /** Trim cells (default true) */
    trimCells?: boolean;
}
type CsvRow = Record<string, unknown>;
declare function parseCSV(input: File | Blob | ArrayBuffer | Buffer | string, opts?: CsvOptions): Promise<CsvRow[]>;

export { type CsvOptions, type CsvRow, parseCSV as default, parseCSV };