There's no reason to use normal for loops anymore for the common case.

The following:

const arr = ['foo', 'bar'];

for (let i = 0; i < arr.length; i++) {
  const el = arr[i];
  console.log(i, el);
}

Can now be written as:

const arr = ['foo', 'bar'];

for (const [i, el] of arr.entries()) {
  console.log(i, el);
}

Off-by-one errors is one of the most common bugs in software. Swift actually removed this completely from the language.

We could probably ignore reverse loops and other cases, but the common case like above is better written in the latter form.

@kevva @SamVerschueren @jfmengels @jamestalmage Thoughts?

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