Bug 495738

Description Muhammad Mousa 2016-06-08 14:47:22 EDT

for (var n of iteratorObject)

throws the warning: `Missing semicolon.` and attempts to add one after n, correcting it to

for (var n; of iteratorObject)

which is incorrect.

This example (test in chrome browser) should print the first Fibonacci numbers under 20 (1, 2, 3, 5, 8, 13). It makes use of for..of and iterator objects.

let fibonacci = {
  [Symbol.iterator]() {
    let pre = 0, cur = 1;
    return {
      next() {
        [pre, cur] = [cur, pre + cur];
        return { done: false, value: cur }
      }
    }
  }
}

for (var n of fibonacci) {
  // truncate the sequence at 20
  if (n > 20)
    break;
  console.log(n);
}