import { CaptchaService } from '../service/captcha.service';
import { CaptchaQueryDto } from '../dto/captcha-query.dto';
export declare abstract class CommonCaptchaController {
    protected readonly captchaService: CaptchaService;
    constructor(captchaService: CaptchaService);
    getCaptcha(query: CaptchaQueryDto): Promise<import("../api").ApiResponseVo<{
        svg: string;
        key: string;
    } | undefined>>;
}