Global.Intl.Collator

// Sort using collator. Array becomes: [ 'a', 'b', 'c' ]
const elements = [ 'c', 'b', 'a' ];
elements.sort(new Intl.Collator().compare);
console.log(`Sorted Elements: ${elements}`);

// Case sensitive and accent sensitive string matching.
// This is the default collator sensitivity.
console.log('Variant Sensitivity:');
let collator = new Intl.Collator(Ti.Locale.currentLocale, { sensitivity: 'variant' });
console.log(collator.compare('a', 'a') === 0);  // Equal
console.log(collator.compare('a', 'á') === 0);  // Not Equal
console.log(collator.compare('a', 'A') === 0);  // Not Equal
console.log(collator.compare('a', 'b') === 0);  // Not Equal

// Case sensitive matching, ignoring accents marks.
console.log('Case Sensitivity:');
collator = new Intl.Collator(Ti.Locale.currentLocale, { sensitivity: 'case' });
console.log(collator.compare('a', 'a') === 0);  // Equal
console.log(collator.compare('a', 'á') === 0);  // Equal
console.log(collator.compare('a', 'A') === 0);  // Not Equal
console.log(collator.compare('a', 'b') === 0);  // Not Equal

// Do an accent sensitive match, ignoring case.
console.log('Accent Sensitivity:');
collator = new Intl.Collator(Ti.Locale.currentLocale, { sensitivity: 'accent' });
console.log(collator.compare('a', 'a') === 0);  // Equal
console.log(collator.compare('a', 'á') === 0);  // Not Equal
console.log(collator.compare('a', 'A') === 0);  // Equal
console.log(collator.compare('a', 'b') === 0);  // Not Equal

// Match strings having same base letters, ignoring case and accents.
console.log('Base Sensitivity:');
collator = new Intl.Collator(Ti.Locale.currentLocale, { sensitivity: 'base' });
console.log(collator.compare('a', 'a') === 0);  // Equal
console.log(collator.compare('a', 'á') === 0);  // Equal
console.log(collator.compare('a', 'A') === 0);  // Equal
console.log(collator.compare('a', 'b') === 0);  // Not Equal