import { Result } from '../result';
import { HandlerSync } from '../types/sqnfa';
export declare class LengthConfiguration {
    /**
     * The minimum number of characters in the password.
     */
    minLength: number;
    /**
     * The maximum number of bytes the password is represented in UTF8 code units.
     */
    maxByteSize: number;
}
export declare class LengthHandler implements HandlerSync {
    private config;
    readonly name: string;
    /**
     * NIST 800-63B:
     * Password length has been found to be a primary factor in characterizing
     * password strength. [...] Extremely long passwords (perhaps megabytes in
     * length) could conceivably require excessive processing time to hash, so
     * it is reasonable to have some limit. [...] Accordingly, at LOA2,
     * SP 800-63-2 permitted the use of randomly generated PINs with 6 or more
     * digits while requiring user-chosen memorized secrets to be a minimum of
     * 8 characters long.
     */
    constructor(config?: LengthConfiguration);
    /**
     * Checks that the password is minimum minLength and takes up at most
     * maxBytesSize encoded in UTF-8.
     *
     * @param password The password to check.
     * @returns Successful result is within the limits or a failure otherwise.
     */
    handleSync(password: string): Result;
}