export declare const isBase32: (str: string) => boolean;
export declare const isBase64: (str: string) => boolean;
export declare const isEthereumAddress: (address: string) => boolean;
export declare function isStringWithoutSpecialCharacters(inputString: string): boolean;
export declare function startsWithPrefix(input: string, prefix: string): boolean;
export declare function endsWithSuffix(inputString: string, suffix: string): boolean;