export declare class FontDetector { private rangesByLang; detect(text: string, fonts: string[]): Promise<{ [lang: string]: string; }>; private detectSegment; private load; private addDetectors; } export declare const languageFontMap: { 'ja-JP': string; 'ko-KR': string; 'zh-CN': string; 'zh-TW': string; 'zh-HK': string; 'th-TH': string; 'bn-IN': string; 'ar-AR': string; 'ta-IN': string; 'ml-IN': string; 'he-IL': string; 'te-IN': string; devanagari: string; kannada: string; symbol: string[]; math: string; unknown: string; };