Chapter 7 p234

[fanxinping]

Miss ')' of the for .. of .. in try ... catch ... block. Should be:

try {
  for (let i of counter2) {
    if (i > 2) {
      throw 'err';
    }
    console.log(i);
  }
} catch(e) {}
// 1
// 2
// Exiting early