export declare function isLowerAlpha(input: string): boolean;
export declare function isUpperAlpha(input: string): boolean;
export declare function isAlpha(input: string): boolean;
export declare function isNum(input: string): boolean;
export declare function isAlphaNum(input: string): boolean;
export declare function isLowerAlphaNum(input: string): boolean;
export declare function isUpperAlphaNum(input: string): boolean;