Validate URI domain

[sm2017]

I want to validate uri

const schema = Joi
    .string()
    .uri({
      scheme: [
        /https?/,
      ],
    });

I know that https://github is valid but in my use case I want to treat as invalid

[sholladay]

You could use invalid():

const schema = Joi
    .string()
    .uri({
      scheme: [
        /https?/,
      ],
    })
    .invalid('https://github.com');

[sm2017]

@sholladay I means https://github has no tld , I want force tld exists

[sholladay]

Oh, sorry, I misunderstood. :) Some regex could sort of do this, but I don't think there is a clean and proper way to do it at the moment.

const schema = Joi
    .string()
    .regex(/:\/\/[0-9a-z-.]+\.[a-z]+\//i)
    .uri({
      scheme: [
        /https?/,
      ],
    });

Caveats:

• Not rigorous enough for security purposes. A specially crafted URL could fool this regex by putting an unencoded absolute URL in the path or query string. However, it should work correctly for benevolent users who want to embed URLs, since you would typically encode URLs before putting them in the path or query string.
• This would prevent you from using https://localhost (with or without a port number), which may or may not matter. You could use .allow() to fix that specific case, I suppose. Or you could extend the regex even further.
• I didn't account for numbers in TLDs, as there don't seem to be any TLDs that include numbers at the moment.