/** Minimal RFC 4180 CSV escaper (no dependency). */
export function csvCell(v: unknown): string {
  if (v == null) return "";
  const s = typeof v === "object" ? JSON.stringify(v) : String(v);
  return /[",\r\n]/.test(s) ? `"${s.replace(/"/g, '""')}"` : s;
}

export function csvLine(values: unknown[]): string {
  return `${values.map(csvCell).join(",")}\r\n`;
}