Why does using Intl.Collator with sensitivity option of 'case' (i.e. case sensitivity is on) result in aa coming before AA?
When using the native array.sort() the ordering is as I would expect.
const caseSensitiveCollator = new Intl.Collator('en', { sensitivity: 'case' });
const initialData = ['AA', 'aa', 'ab', 'AB', 'ZA', 'zz'];
console.log('Before: ', initialData);
let data = initialData.concat();
data.sort(caseSensitiveCollator.compare);
console.log('After SENSITIVE', data);
// I expect ['AA', 'AB', 'ZA', 'aa', 'ab', 'zz']
data = initialData.concat().sort();
console.log('Native Array Sort', data);