semver-regex

What is semver-regex?

The semver-regex npm package provides a regular expression for matching semantic versioning (semver) strings. Semantic versioning is a versioning scheme for software that conveys meaning about the underlying changes. The semver-regex package allows users to easily validate and extract semver strings from text.

What are semver-regex's main functionalities?

Validation of semver strings

This feature allows you to test if a string is a valid semantic version. The code sample demonstrates how to use the semver-regex package to validate a correct semver string ('1.0.0') and an incorrect one ('1.0').

const semverRegex = require('semver-regex');
console.log(semverRegex().test('1.0.0')); // true
console.log(semverRegex().test('1.0')); // false

Extraction of semver strings

This feature allows you to extract a semver string from a larger piece of text. The code sample shows how to use the semver-regex package to find and extract the first semver string from a given text.

const semverRegex = require('semver-regex');
const text = 'The latest version is 3.2.1.';
console.log(text.match(semverRegex())[0]); // '3.2.1'

Other packages similar to semver-regex

semver

The semver package is a more comprehensive tool for working with semantic versions. It not only validates semver strings but also compares them, sorts them, and can increment version numbers according to the semver specification. It offers a richer API compared to the simple regex matching of semver-regex.

compare-versions

The compare-versions package allows you to compare semver strings to determine which is greater, equal, or less. It provides a simple comparison function rather than regex-based validation, focusing on the ordering of versions rather than pattern matching.

README

semver-regex

Regular expression for matching semver versions

Install

$ npm install --save semver-regex

Usage

var semverRegex = require('semver-regex');

semverRegex().test('v1.0.0');
//=> true

semverRegex().test('1.2.3-alpha.10.beta.0+build.unicorn.rainbow');
//=> true

semverRegex().exec('unicorn 1.0.0 rainbow')[0];
//=> 1.0.0

'unicorn 1.0.0 and rainbow 2.1.3'.match(semverRegex());
//=> ['1.0.0', '2.1.3']

It's a function so you can create multiple instances. Regexes with the global flag will have the .lastIndex property changed for each call to methods on the instance. Therefore reusing the instance with multiple calls will not work as expected for .test().

License

MIT © Sindre Sorhus