import { PasswordStrength } from './constants';
import { PasswordEvaluator, StrengthLevelToCssClassProps } from './types';
export declare const transformToCase: (letter: string, letterCase: "lower" | "upper" | undefined) => string;
export declare const getValue: (valueProp: string | null | undefined, valueState: string) => string;
export declare const strengthLevelToCssClass: (props: StrengthLevelToCssClassProps) => string;
export declare const getIsPasswordOk: (value: string, evaluator: RegExp | ((password: any) => boolean)) => boolean;
export declare const getPasswordStrength: (value?: string, passwordEvaluators?: PasswordEvaluator[] | undefined) => {
    message: string;
    strengthLevel: PasswordStrength;
};