message: styling the dot output
diff: @@ -73,6 +73,10 @@ async function main() {
  passed++;
  // print a dot for each passed example
  process.stdout.write(".");
  + // add a new line occasionally
  + if (passed % 100 === 0) {
  + process.stdout.write("\n");
  + }
  } catch (e) {
  console.log(example + "\n" + e);
  }
  