Provide regular expressions and JSON schemas for UUIDs

Hi 👋

I’m one of the authors of the uuidv4 module.

With the new 8.3 version of uuid there is almost everything there that is needed from our POV, and we are planning to deprecate uuidv4 in favor of this module.

However, there are two very small things missing, before we can do this:

First, it would be awesome to have regular expressions for UUIDs. In uuidv4 we use the following ones:

const regex = {
  v4: /(?:^[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[a-f0-9]{4}-[a-f0-9]{12}$)|(?:^0{8}-0{4}-0{4}-0{4}-0{12}$)/u,
  v5: /(?:^[a-f0-9]{8}-[a-f0-9]{4}-5[a-f0-9]{3}-[a-f0-9]{4}-[a-f0-9]{12}$)|(?:^0{8}-0{4}-0{4}-0{4}-0{12}$)/u
};

Besides, it would be great to have JSON schemas for UUIDs. Again, we’re using this code here, which builds on top of the aforementioned regexs:

const jsonSchema = {
  v4: { type: 'string', pattern: regex.v4.toString().slice(1, -2) },
  v5: { type: 'string', pattern: regex.v5.toString().slice(1, -2) }
};

Unfortunately, we are missing the time to update the uuid module ourselves, however this should be fairly easy to integrate.

[goloroden]

@broofa We used ajv historically, but it is huge (which makes it a bad use case for the frontend), and its error messages are… well, they could better 😉

Hence we switched to jjv, which is way smaller (compare https://bundlephobia.com/result?p=ajv@6.12.3 to https://bundlephobia.com/result?p=jjv@1.0.2), and which produces – when combined with jjve – nice, human-readable error messages.

Unfortunately, its last release has been 6 years ago, which is probably the main reason why it doesn’t support UUIDs.

So, not that you get this wrong: ajv is a great module, it’s just too large for small client-side bundles.

[broofa]

Closing, as it doesn’t seem like a compelling enough argument has been made to add this.