import { IPasswordStrength, PasswordStrengthOptions, RuleFunction } from './types';
export declare class PasswordStrength implements IPasswordStrength {
    private readonly input;
    private readonly options;
    private readonly handlers;
    constructor(input: HTMLInputElement, options?: PasswordStrengthOptions);
    private setup;
    destroy(): void;
    forceUpdate(): void;
    addRule(name: string, method: RuleFunction, score: number, active: boolean): this;
    changeScore(rule: string, score: number): this;
    ruleActive(rule: string, active: boolean): this;
    ruleIsMet(rule: string): boolean;
    private computeScore;
    private onInput;
    private onPaste;
}