Function pct

frontend/src/App.tsx:68–74

(value: number)

const earthRadiusM = 6_371_000;

function pct(value: number) {
  const percent = value * 100;
  if (percent > 0 && percent < 1) {
    return `${percent.toFixed(1)}%`;
  }
  return `${Math.round(percent)}%`;
}

function challengeShareUrl(challengeId: string) {
  return `${window.location.origin}${window.location.pathname}?challenge=${challengeId}`;