export declare type Options = {
    /** Convert other characters in the string to upper case */
    upperCase?: boolean;
};
/**
 * Convert the first letter of a string to lower case
 *
 * @param input The string to make small case
 * @default upperCase false
 * @returns the string in small case
 */
export declare function toSmallCase(input: string, { upperCase }?: Options): string;
export default toSmallCase;