1import { CaseMapper } from "icu4x" 2import { Locale } from "icu4x" 3import { TitlecaseOptions } from "icu4x" 4export function lowercase(s: string, localeName: string); 5export function uppercase(s: string, localeName: string); 6export function titlecaseSegmentWithOnlyCaseData(s: string, localeName: string, optionsLeadingAdjustment: LeadingAdjustment, optionsTrailingCase: TrailingCase); 7export function fold(s: string); 8export function foldTurkic(s: string); 9