/**
 * Korean text normalization for preProcess: converts Arabic digits to
 * Sino-Korean Hangul. anyAscii then romanizes to the camelCase syllable
 * form (e.g. "백" → "Baek") that ko-g2p expects.
 *
 * Only the Sino-Korean system (일·이·삼 …) is implemented; the native
 * counter system (하나·둘·셋 …) requires per-counter context detection
 * and is left for a later pass.
 */
export declare function expandKoreanText(text: string): string;