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export function benchSync(name, n, innerLoop) {  const t1 = Date.now();  for (let i = 0; i < n; i++) {    innerLoop(i);  }  const t2 = Date.now();  console.log(benchStats(name, n, t1, t2));}
export async function benchAsync(name, n, innerLoop) {  const t1 = Date.now();  for (let i = 0; i < n; i++) {    await innerLoop(i);  }  const t2 = Date.now();  console.log(benchStats(name, n, t1, t2));}
function benchStats(name, n, t1, t2) {  const dt = (t2 - t1) / 1e3;  const r = n / dt;  const ns = Math.floor(dt / n * 1e9);  return `${name}:${" ".repeat(20 - name.length)}\t` +    `n = ${n}, dt = ${dt.toFixed(3)}s, r = ${r.toFixed(0)}/s, t = ${ns}ns/op`;}