Function timeToString

test/utils.ts:355–359

(t: number)

  t /= 1000;
  return t.toFixed(2) + ' s';
}

export function benchmark(
  fn: () => void,
  expected?: { time: number; mem: number; exprs: number }
) {
  const startMem = process.memoryUsage().heapUsed;
  const start = globalThis.performance.now();