NPM Package Name

Validates scoped and unscoped NPM package names according to npm naming rules.

✓ NPM package generator input check✓ Dependency auditor✓ Registry API validator

Safe

Test String

4 matches

express
react
@regexto/validators
@angular/core

(?:…)?Non-capturing group— Non-capturing group — groups without capturing (no index assigned) — repeated zero or one time (optional) · ? — zero or one time (optional)

@@— '@' — literal character

[…]Character class […]— Matches any single character listed in this set

[…]*Character class […]— Matches any single character listed in this set — repeated zero or more times (greedy) · * — zero or more times (greedy)

\/\/— \/ — escaped character '/'

[…]Character class […]— Matches any single character listed in this set

a-za-z— a-z — range from 'a' to 'z'

0-90-9— 0-9 — range from '0' to '9'

--— '-' — literal character

~~— '~' — literal character

[…]*Character class […]— Matches any single character listed in this set — repeated zero or more times (greedy) · * — zero or more times (greedy)

a-za-z— a-z — range from 'a' to 'z'

0-90-9— 0-9 — range from '0' to '9'

--— '-' — literal character

..— '.' — literal character

__— '_' — literal character

~~— '~' — literal character

Pattern: 54 charsInput: 47 chars

100% client-side · private

✓ Valid Examples

express
react
@regexto/validators
@angular/core

✗ Invalid Examples

_invalid_package
@scope/
package name with space
UPPERCASE_PACKAGE

Usage & Integration

Validate NPM Package Name natively in your backend or frontend without copying regex strings.

Node / Edge

import { validate } from '@regexto/validators';

validate('npm-package-name', '...');

Python

from regexto_validators import validate

validate("npm-package-name", "...")

Go

import "github.com/regex-to/validators-go"

valid, err := validators.Validate("npm-package-name", "...")

PHP

use RegexTo\Validators\Validator;

Validator::validate('npm-package-name', '...');

Rust

use regexto_validators::validate;

let is_valid = validate("npm-package-name", "...").unwrap();