/*! https://mths.be/utf8js v2.1.2 by @mathias */
export declare class Utf8 {
    private static ucs2decode;
    private static ucs2encode;
    private static checkScalarValue;
    private static createByte;
    private static encodeCodePoint;
    static utf8encode(string: any): string;
    private static readContinuationByte;
    private static decodeSymbol;
    private static byteArray;
    private static byteCount;
    private static byteIndex;
    static utf8decode(byteString: any): string;
}