import { CaptchaObj, ConfigObject } from "svg-captcha";
import Redis from "ioredis";
interface SendOptions {
    clientId?: string;
    options?: ConfigObject;
}
interface VerifyOptions {
    clientId: string;
    captcha: string;
}
export declare class SvgCaptchaUtil {
    private readonly redis;
    constructor(redis: Redis);
    send({ clientId, options, }?: SendOptions): Promise<CaptchaObj>;
    verify({ clientId, captcha, }: VerifyOptions): Promise<{
        clientId: string;
        captcha: string;
    }>;
}
export {};