Validation utils


import { isEmail, isStrongPassword } from '@gg-software/utils';

All of these are format checks — they say a value looks valid, not that it exists.

isEmail

Pragmatic email check (single @, no spaces, dot in the domain).


isEmail('ada@example.com'); // true
isEmail('nope@nope'); // false

isUrl

URL check via the URL constructor, restricted to the given protocols.


isUrl('https://example.com'); // true
isUrl('example.com'); // false (no protocol)
isUrl('javascript:alert(1)'); // false (protocol not allowed)
isUrl('ftp://files.example.com', ['ftp:']); // true

Parameter	Type	Default
`value`	`string`	—
`protocols`	`string[]`	`['http:', 'https:']`

isPhone

Permissive international check: optional leading +, digits with spaces / dashes / dots / parentheses, 7–15 digits total (E.164 bounds).


isPhone('+420 601 123 456'); // true
isPhone('601123456'); // true
isPhone('12ab34'); // false

isStrongPassword

Strength check against configurable requirements.


isStrongPassword('Passw0rd'); // true (default rules)
isStrongPassword('passw0rd'); // false (no uppercase)
isStrongPassword('Sup3r$ecret', { symbol: true }); // true

Defaults (PasswordRequirements):

Option	Default	Meaning
`minLength`	`8`	minimum length
`uppercase`	`true`	at least one A–Z
`lowercase`	`true`	at least one a–z
`number`	`true`	at least one digit
`symbol`	`false`	at least one non-alphanumeric