export declare function isWhiteSpace(code: number): boolean;
export declare function isDigit(code: number): boolean;
export declare function isLetter(code: number): boolean;
export declare function isNameStart(code: number): boolean;
export declare function isNameContinue(code: number): boolean;
export declare function isUnicodeScalarValue(code: number): boolean;
export declare function isSupplementaryCodePoint(body: string, location: number): boolean;
export declare function isLeadingSurrogate(code: number): boolean;
export declare function isTrailingSurrogate(code: number): boolean;