export declare enum NgxQrcodeElementTypes {
    URL = "url",
    IMG = "img",
    CANVAS = "canvas"
}
export declare enum NgxQrcodeErrorCorrectionLevels {
    LOW = "L",
    MEDIUM = "M",
    QUARTILE = "Q",
    HIGH = "H"
}
export declare type NgxQrcodeVersionType = '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' | '10' | '11' | '12' | '13' | '14' | '15' | '16' | '17' | '18' | '19' | '20' | '21' | '22' | '23' | '24' | '25' | '26' | '27' | '28' | '29' | '30' | '31' | '32' | '33' | '34' | '35' | '36' | '37' | '38' | '39' | '40' | '';