I want to generate a random UpperCase / LowerCase captcha how do I do that

[PiinnKs]

    const captchacode = crypto.randomBytes(32).toString("hex").substr(0, 4);
    const captcha = new CaptchaGenerator() 
    .setCaptcha({text: captchacode, size: 60, color: '#e600ff'})
    .setTrace({color: '#e600ff', size: 6});
    const buffer = await captcha.generate(); 

[Shashank3736]

You can generate captcha text by using crypto.

Docs: https://nodejs.org/dist/latest-v14.x/docs/api/crypto.html#crypto_crypto_randombytes_size_callback