import { QRCodeBaseOptions } from './types';
export declare const isQRCodeCorrectLevel: (value: unknown) => boolean;
export declare const isQRCodeMaskPattern: (value: unknown) => boolean;
export declare const isQRCodeVersion: (value: unknown) => boolean;
export declare const isQRCodeDotScale: (value: unknown) => boolean;
export declare const assertQRCodeOptions: (options: Partial<QRCodeBaseOptions>) => void;