IPv6 validation error

[avegao]

IPv6 validation fails when the last two parts of the IPv6 are compressed, both when one or both are omitted. It does not happen if it is any other part. I have checked the regex you use in

zod/src/types.ts

Line 613 in 1247caf

/^(([a-f0-9]{1,4}:){7}|::([a-f0-9]{1,4}:){0,6}|([a-f0-9]{1,4}:){1}:([a-f0-9]{1,4}:){0,5}|([a-f0-9]{1,4}:){2}:([a-f0-9]{1,4}:){0,4}|([a-f0-9]{1,4}:){3}:([a-f0-9]{1,4}:){0,3}|([a-f0-9]{1,4}:){4}:([a-f0-9]{1,4}:){0,2}|([a-f0-9]{1,4}:){5}:([a-f0-9]{1,4}:){0,1})([a-f0-9]{1,4}|(((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([0-9]{1,2}))\.){3}((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([0-9]{1,2})))$/;

and I have also checked it in external tools and the zod behavior is reproduced.

const ip = '2001:4888:50:ff00:500:d::';
const schema = z.string().ip();
const { success } = schema.safeParse(ip); // false

const ip = '2001:4888:50:ff00:500:d:0:0';
const schema = z.string().ip();
const { success } = schema.safeParse(ip); // true

const ip = '2001:4888:50:ff00::d:0:0';
const schema = z.string().ip();
const { success } = schema.safeParse(ip); // true

[ffraenz]

I can confirm this issue. In my logs I found that z.string().ip().safeParse('2a00:116a:105:2e70::') results in "Invalid ip", although being perfectly fine. Thank you for reporting it and proposing a fix!