/** @param {number} rate */
export function formatFeeRate(rate) {
  if (rate >= 1_000_000) return `${(rate / 1_000_000).toFixed(1)}M`;
  if (rate >= 100_000) return `${Math.round(rate / 1_000)}k`;
  if (rate >= 1_000) return `${(rate / 1_000).toFixed(1)}k`;
  if (rate >= 100) return Math.round(rate).toLocaleString();
  if (rate >= 10) return rate.toFixed(1);
  return rate.toFixed(2);
}