Function localeBase

packages/intl-collator/compare.ts:94–96

(locale: string)

const tailoringCache = new Map<string, readonly TailoringEntry[]>()

function localeBase(locale: string): string {
  return locale.split('-u-')[0]
}

function collationForComparison(locale: string, collation: string): string {
  if (collation !== 'default') {