@aritro2002/regex

Anchored, reusable regular expressions for everyday validation, plus a couple of string helpers.

Install

npm install @aritro2002/regex

Usage

import { isEmail, isSemver, classify, escape, toSlug } from '@aritro2002/regex';

isEmail('[email protected]'); // true
isEmail('[email protected] extra'); // false — patterns are anchored
isSemver('1.2.3-beta.1'); // true

classify('my-post'); // ['slug']
escape('1+1'); // '1\\+1'
toSlug('  Héllo,  World! '); // 'hello-world'

Patterns

email, url, slug, hexColor, ipv4, uuid, isoDate, semver.

Each is exposed as a factory on patterns, not a shared instance:

import { patterns } from '@aritro2002/regex';

patterns.email().test('[email protected]');

A single shared regex would carry lastIndex between calls if it ever gained the g flag, which makes validation return alternating results. Handing out a fresh instance per call rules that out.

API

| Export | Description | | --- | --- | | patterns | Map of pattern name to a factory returning a fresh RegExp. | | patternNames | Array of every pattern name. | | matches(name, value) | Tests a value against a named pattern. | | isEmail … isSemver | One shorthand per pattern. | | classify(value) | Every pattern name the value satisfies. | | escape(value) | Escapes a string for use inside a RegExp. | | toSlug(value) | Turns arbitrary text into a URL-safe slug. |

License

MIT